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Transepithelial potential difference

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sodium channel (which absorbs sodium into the cell). Impaired CFTR functioning directly reduces ductal epithelial chloride secretion and indirectly increases sodium absorption through lack of CFTR's inhibitory effect on the apical sodium channel. The result is dehydrated mucus and a widened, negative
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concentrations in sweat, characteristic clinical findings (including sinopulmonary infections), and/or family history. However, a small portion of patients with cystic fibrosis, especially those with "mild" mutations of the
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and offers the advantage of continuously monitoring living cells throughout their various stages of growth and differentiation, it is widely accepted as a standard validation tool.
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resistance to serve as a proxy for the permeability of a cellular monolayer. TEER therefore enables researchers to miniaturize
71:). Individuals with cystic fibrosis have a significantly more negative nasoepithelial surface than normal, due to increased 146:
systems. TEER has proven to be a highly sensitive and reliable method to confirm the integrity and permeability of
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TEPD is increased in cystic fibrosis, making it a potential diagnostic tool for this disorder.
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In these cases, a useful diagnostic adjunct involves measuring the nasal transepithelial
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Srinivasan B, Kolli AR, Esch MB, Abaci HE, Shuler ML, Hickman JJ (April 2015).
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Transepithelial / transendothelial electrical resistance (TEER) is an
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Zidarič, Tanja; Gradišnik, Lidija; Velnar, Tomaž (2022-04-01).
86:, and also has a tonic inhibitory effect on the opening of the 271:"Astrocytes and human artificial blood-brain barrier models" 82:, the CFTR protein normally secretes chloride ions into the 173:"Transepithelial potential difference in cystic fibrosis" 56:(CFTR) ion channel, have near-normal sweat tests. 8: 142:transfer, or membrane integrity assays in 304: 286: 275:Bosnian Journal of Basic Medical Sciences 245: 196: 163: 54:cystic fibrosis transmembrane regulator 91:transepithelial potential difference. 7: 122:technique widely adopted for use in 63:(i.e. the charge on the respiratory 17:Transepithelial potential difference 106:In the kidney, TEPD contributes to 14: 226:Journal of Laboratory Automation 171:Hay JG, Geddes DM (July 1985). 150:barrier models. Because it is 47:(CF) is usually based on high 1: 356: 288:10.17305/bjbms.2021.6943 238:10.1177/2211068214561025 31:for the outer and inner 27:, and is the sum of the 67:surface as compared to 189:10.1136/thx.40.7.493 120:electrophysiological 108:tubular reabsorption 75:sodium absorption. 61:potential difference 140:Blood–brain barrier 29:membrane potentials 102:TEPD in the kidney 69:interstitial fluid 126:systems. It uses 43:The diagnosis of 347: 335:Membrane biology 319: 318: 308: 290: 266: 260: 259: 249: 217: 211: 210: 200: 168: 114:TEER measurement 39:TEPD in the nose 355: 354: 350: 349: 348: 346: 345: 344: 340:Cystic fibrosis 325: 324: 323: 322: 268: 267: 263: 219: 218: 214: 170: 169: 165: 160: 124:organ-on-a-chip 116: 104: 80:exocrine glands 45:cystic fibrosis 41: 12: 11: 5: 353: 351: 343: 342: 337: 327: 326: 321: 320: 281:(5): 651–672. 261: 212: 162: 161: 159: 156: 138:permeability, 115: 112: 103: 100: 40: 37: 33:cell membranes 19:(TEPD) is the 13: 10: 9: 6: 4: 3: 2: 352: 341: 338: 336: 333: 332: 330: 316: 312: 307: 302: 298: 294: 289: 284: 280: 276: 272: 265: 262: 257: 253: 248: 243: 239: 235: 232:(2): 107–26. 231: 227: 223: 216: 213: 208: 204: 199: 194: 190: 186: 182: 178: 174: 167: 164: 157: 155: 153: 149: 145: 141: 137: 133: 129: 128:ohmic contact 125: 121: 113: 111: 109: 101: 99: 97: 92: 89: 85: 81: 76: 74: 70: 66: 62: 57: 55: 50: 46: 38: 36: 34: 30: 26: 22: 18: 278: 274: 264: 229: 225: 215: 183:(7): 493–6. 180: 176: 166: 152:non-invasive 147: 144:microfluidic 117: 105: 93: 77: 58: 42: 16: 15: 329:Categories 158:References 65:epithelial 25:epithelium 23:across an 297:1840-4812 315:35366791 256:25586998 148:in vitro 134:such as 78:In most 49:chloride 306:9519155 247:4652793 207:4035615 73:luminal 21:voltage 313:  303:  295:  254:  244:  205:  198:460118 195:  177:Thorax 136:Caco-2 132:assays 88:apical 96:nasal 84:lumen 311:PMID 293:ISSN 252:PMID 203:PMID 94:The 301:PMC 283:doi 242:PMC 234:doi 193:PMC 185:doi 331:: 309:. 299:. 291:. 279:22 277:. 273:. 250:. 240:. 230:20 228:. 224:. 201:. 191:. 181:40 179:. 175:. 110:. 35:. 317:. 285:: 258:. 236:: 209:. 187::

Index

voltage
epithelium
membrane potentials
cell membranes
cystic fibrosis
chloride
cystic fibrosis transmembrane regulator
potential difference
epithelial
interstitial fluid
luminal
exocrine glands
lumen
apical
nasal
tubular reabsorption
electrophysiological
organ-on-a-chip
ohmic contact
assays
Caco-2
Blood–brain barrier
microfluidic
non-invasive
"Transepithelial potential difference in cystic fibrosis"
doi
10.1136/thx.40.7.493
PMC
460118
PMID

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