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Calcium concentration microdomains

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108:) is also involved in regulating the amount of calcium in cells. The NCX switches the intra- and extra-cellular amounts of Na and Ca. NCX works together with Na-K-ATPase to create calcium concentration microdomains in certain cells like astrocytes discussed above. Specific forms of Na-K-ATPase, the Ξ±2 or Ξ±3 isoforms, actually interact with the NCX in the formation of the calcium microdomains in astrocytes. 78:) is used. Calcium is also regulated using this Na-K-ATPase due to the enzyme's interactions with protein and non-protein molecules. The main interaction that keeps calcium regulated is the binding of Na-K-ATPase to inositol 1,4,5-trisphosphate ( 1056:
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across the cell membrane. Na-K-ATPase helps to keep the body at equilibrium by the movement of those ions through the plasma membrane. This ion pump helps to reset the movement of ions during an
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which are star-shaped glial cells in the central nervous system are the main cells with these calcium-signaling micro domains. In fact, a rigorous mathematical analysis in
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right next to the pre- and post-synaptic calcium channels in the nerve cells. Figure 1 is an example of how Na-K-ATPase forms the calcium-signaling microdomain.
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by sending K into the cell and sending Na out of the cell. Since it opposes the normal flow of ions during an action potential, energy in the form of ATP (
535:"Observation of calcium microdomains at the uropod of living morphologically polarized human neutrophils using flash lamp-based fluorescence microscopy" 739:
Lisman, J. E.; Raghavachari, S.; Tsien, R. W. (2007). "The sequence of events that underlie quantal transmission at central glutamatergic synapses".
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has shown that localized inflow of Ca remains localized, despite the diffusion of cytosolic Ca and potential storage in the endoplasmic reticulum.
860:"Subplasmalemmal Ca(2+) measurements in mouse pancreatic beta cells support the existence of an amplifying effect of glucose on insulin secretion" 154:"Imaging synaptosomal calcium concentration microdomains and vesicle fusion by using total internal reflection fluorescent microscopy" 909:"Imaging a target of Ca(2+) signalling: Dense core granule exocytosis viewed by total internal reflection fluorescence microscopy" 1105: 211:
Llinas, R; Sugimori, M; Silver, R. (1 May 1992). "Microdomains of high calcium concentration in a presynaptic terminal".
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that helps to send neuronal signals through the body. The neuronal cells have the calcium-signaling microdomains in the
105: 43: 79: 75: 31:; when a calcium channel opens, the Ca concentration in the adjacent CCM increases up to several hundred 59: 62:
enzyme relate with the creation of calcium-signaling microdomains. Na-K-ATPase is a protein that pumps
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Thomsen, L. B. T. L. B.; Jorntell, H.; Midtgaard, J. (2010).
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Serulle, Y.; Sugimori, M.; Llinas, R. R. (30 January 2007).
1007:"Presynaptic calcium signalling in cerebellar mossy fibres" 42:
Calcium concentration microdomains can be visualised with
633:"Modelling calcium microdomains using homogenisation" 354:"The Na-K-ATPase and calcium-signaling microdomains" 1058:
International Journal of Developmental Neuroscience
500:Castillo, K.; Bacigalupo, J.; Restrepo, D. (2008). 39:, which has a diverse range of potential outcomes. 907:Ravier, M. A.; Tsuboi, T.; Rutter, G. A. (2008). 956:Shigetomi, E.; Kracun, S.; Khakh, B. S. (2010). 582:Francis, A. A.; Mehta, B.; Zenisek, D. (2011). 158:Proceedings of the National Academy of Sciences 256:"Imaging single-channel calcium microdomains" 8: 1032: 1022: 981: 932: 883: 807: 715: 705: 664: 607: 558: 517: 468: 418: 377: 328: 279: 187: 177: 144: 35:(ΞΌM). These microdomains take part in 254:Demuro, A; Parker, I (Nov–Dec 2006). 7: 352:Tian, J.; Xie, Z. J. 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J. (2008). 519:10.1093/chemse/bjn065 122:Muscular Interactions 551:10.1002/cyto.a.20580 962:Neuron Glia Biology 649:2007JThBi.247..623H 225:1992Sci...256..677L 170:2007PNAS..104.1697S 104:A Na/Ca exchanger ( 84:secondary messenger 58:The actions of the 54:Ion Channel Process 800:10.1002/glia.20915 700:(29): 7684–7695. 463:(20): 4990–5006. 219:(5057): 677–679. 37:calcium signaling 1113: 1090: 1089: 1053: 1047: 1046: 1036: 1026: 1002: 996: 995: 985: 953: 947: 946: 936: 904: 898: 897: 887: 870:(9): 1947–1957. 855: 849: 848: 820: 814: 813: 811: 779: 773: 772: 736: 730: 729: 719: 709: 685: 679: 678: 668: 628: 622: 621: 611: 594:(2): 1028–1037. 579: 573: 572: 562: 539:Cytometry Part A 530: 524: 523: 521: 497: 491: 490: 472: 448: 442: 439: 433: 432: 422: 398: 392: 391: 381: 349: 343: 342: 332: 300: 294: 293: 283: 251: 245: 244: 208: 202: 201: 191: 181: 164:(5): 1697–1702. 149: 72:action potential 29:calcium channels 1121: 1120: 1116: 1115: 1114: 1112: 1111: 1110: 1096: 1095: 1094: 1093: 1055: 1054: 1050: 1004: 1003: 999: 955: 954: 950: 906: 905: 901: 857: 856: 852: 831:(10): 495–500. 822: 821: 817: 781: 780: 776: 753:10.1038/nrn2191 738: 737: 733: 687: 686: 682: 630: 629: 625: 581: 580: 576: 532: 531: 527: 506:Chemical Senses 499: 498: 494: 450: 449: 445: 440: 436: 400: 399: 395: 351: 350: 346: 315:(22): 5467–75. 302: 301: 297: 266:(5–6): 413–22. 253: 252: 248: 210: 209: 205: 151: 150: 146: 141: 134: 129: 124: 119: 114: 56: 12: 11: 5: 1119: 1117: 1109: 1108: 1098: 1097: 1092: 1091: 1064:(6): 521–528. 1048: 997: 968:(3): 183–191. 948: 919:(3): 233–238. 899: 850: 815: 774: 747:(8): 597–609. 731: 680: 643:(4): 623–644. 623: 574: 545:(7): 673–678. 525: 492: 443: 434: 413:(3): 592–603. 393: 364:(4): 205–211. 344: 295: 246: 203: 143: 142: 140: 137: 133: 130: 128: 125: 123: 120: 118: 115: 113: 110: 55: 52: 13: 10: 9: 6: 4: 3: 2: 1118: 1107: 1104: 1103: 1101: 1087: 1083: 1079: 1075: 1071: 1067: 1063: 1059: 1052: 1049: 1044: 1040: 1035: 1030: 1025: 1020: 1016: 1012: 1008: 1001: 998: 993: 989: 984: 979: 975: 971: 967: 963: 959: 952: 949: 944: 940: 935: 930: 926: 922: 918: 914: 910: 903: 900: 895: 891: 886: 881: 877: 873: 869: 865: 861: 854: 851: 846: 842: 838: 834: 830: 826: 819: 816: 810: 805: 801: 797: 793: 789: 785: 778: 775: 770: 766: 762: 758: 754: 750: 746: 742: 735: 732: 727: 723: 718: 713: 708: 703: 699: 695: 691: 684: 681: 676: 672: 667: 662: 658: 654: 650: 646: 642: 638: 634: 627: 624: 619: 615: 610: 605: 601: 597: 593: 589: 585: 578: 575: 570: 566: 561: 556: 552: 548: 544: 540: 536: 529: 526: 520: 515: 511: 507: 503: 496: 493: 488: 484: 480: 476: 471: 466: 462: 458: 454: 447: 444: 438: 435: 430: 426: 421: 416: 412: 408: 404: 397: 394: 389: 385: 380: 375: 371: 367: 363: 359: 355: 348: 345: 340: 336: 331: 326: 322: 318: 314: 310: 306: 299: 296: 291: 287: 282: 277: 273: 269: 265: 261: 257: 250: 247: 242: 238: 234: 230: 226: 222: 218: 214: 207: 204: 199: 195: 190: 185: 180: 175: 171: 167: 163: 159: 155: 148: 145: 138: 136: 131: 126: 121: 116: 111: 109: 107: 102: 100: 96: 91: 89: 85: 81: 77: 73: 69: 65: 61: 53: 51: 49: 45: 40: 38: 34: 30: 26: 22: 18: 1061: 1057: 1051: 1014: 1010: 1000: 965: 961: 951: 916: 912: 902: 867: 864:Diabetologia 863: 853: 828: 824: 818: 791: 787: 777: 744: 740: 734: 697: 693: 683: 640: 636: 626: 591: 587: 577: 542: 538: 528: 509: 505: 495: 460: 457:FEBS Journal 456: 446: 437: 410: 406: 396: 361: 357: 347: 312: 308: 298: 263: 260:Cell Calcium 259: 249: 216: 212: 206: 161: 157: 147: 135: 127:Muscle Cells 103: 92: 82:). IP3 is a 57: 41: 16: 15: 794:(13): S45. 60:Na-K-ATPase 25:calcium ion 512:(8): S61. 358:Physiology 139:References 117:Astrocytes 99:astrocytes 95:astrocytes 33:micromolar 784:"Posters" 132:Footnotes 88:cytoplasm 46:by using 21:cytoplasm 1100:Category 1086:23209232 1078:20546880 1043:20162034 992:21205365 943:18854212 894:20461354 845:20828847 769:18365674 761:17637801 726:17634363 675:17499276 618:21653726 569:18496849 487:21034449 479:18783430 429:26356026 388:18697994 290:17067668 198:17242349 48:aequorin 1034:2821199 983:3136572 934:2597054 913:Methods 885:3297670 809:7165548 717:6672867 666:1991275 645:Bibcode 609:3154815 560:3180874 379:5375021 339:8521803 281:1694561 241:1350109 221:Bibcode 213:Science 189:1785242 166:Bibcode 1084:  1076:  1041:  1031:  990:  980:  941:  931:  892:  882:  843:  806:  767:  759:  724:  714:  673:  663:  616:  606:  567:  557:  485:  477:  427:  386:  376:  337:  330:394660 327:  309:EMBO J 288:  278:  239:  196:  186:  1082:S2CID 1017:: 1. 765:S2CID 483:S2CID 1074:PMID 1039:PMID 988:PMID 939:PMID 890:PMID 841:PMID 788:Glia 757:PMID 722:PMID 671:PMID 614:PMID 565:PMID 475:PMID 425:PMID 384:PMID 335:PMID 286:PMID 237:PMID 194:PMID 93:The 66:and 1066:doi 1029:PMC 1019:doi 978:PMC 970:doi 929:PMC 921:doi 880:PMC 872:doi 833:doi 804:PMC 796:doi 749:doi 712:PMC 702:doi 661:PMC 653:doi 641:247 604:PMC 596:doi 592:106 555:PMC 547:doi 543:73A 514:doi 465:doi 461:275 415:doi 374:PMC 366:doi 325:PMC 317:doi 276:PMC 268:doi 229:doi 217:256 184:PMC 174:doi 162:104 106:NCX 80:IP3 1102:: 1080:. 1072:. 1062:28 1060:. 1037:. 1027:. 1013:. 1009:. 986:. 976:. 964:. 960:. 937:. 927:. 917:46 915:. 911:. 888:. 878:. 868:53 866:. 862:. 839:. 829:28 827:. 802:. 792:57 790:. 786:. 763:. 755:. 743:. 720:. 710:. 698:27 696:. 692:. 669:. 659:. 651:. 639:. 635:. 612:. 602:. 590:. 586:. 563:. 553:. 541:. 537:. 510:33 508:. 504:. 481:. 473:. 459:. 455:. 423:. 411:11 409:. 405:. 382:. 372:. 362:23 360:. 356:. 333:. 323:. 313:14 311:. 307:. 284:. 274:. 264:40 262:. 258:. 235:. 227:. 215:. 192:. 182:. 172:. 160:. 156:. 64:Na 1088:. 1068:: 1045:. 1021:: 1015:4 994:. 972:: 966:6 945:. 923:: 896:. 874:: 847:. 835:: 812:. 798:: 771:. 751:: 745:8 728:. 704:: 677:. 655:: 647:: 620:. 598:: 571:. 549:: 522:. 516:: 489:. 467:: 431:. 417:: 390:. 368:: 341:. 319:: 292:. 270:: 243:. 231:: 223:: 200:. 176:: 168:: 68:K

Index

cytoplasm
calcium ion
calcium channels
micromolar
calcium signaling
fluorescence microscopy
aequorin
Na-K-ATPase
Na
K
action potential
adenosine triphosphate
IP3
secondary messenger
cytoplasm
astrocytes
astrocytes
NCX
"Imaging synaptosomal calcium concentration microdomains and vesicle fusion by using total internal reflection fluorescent microscopy"
Bibcode
2007PNAS..104.1697S
doi
10.1073/pnas.0610741104
PMC
1785242
PMID
17242349
Bibcode
1992Sci...256..677L
doi

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