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1 TnT may serve as a bridge between the Ca(2+) sensor (TnC
2 ts Tm*146-TnI, Tm*146-troponin C, and Tm*146-TnT using fluorescence-labeled TnI, mass spectrometry, a
3 icles was capped by a gelsolin (segment 1-3)-TnT fusion protein (substituting for normal TnT), and th
4 diac Trpm7 deletion (before embryonic day 9; TnT/Isl1-Cre) results in congestive heart failure and de
8 rdiac troponin T mutants (TnT(1-44Delta) and TnT(45-74Delta)) that have a divergent effect on the ove
9 cho Bernardo Study with plasma NT-proBNP and TnT measured at baseline (1997 to 1999) and followed up
10 f TnC (the sensor), TnI (the regulator), and TnT (the link to the muscle thin filament) have been det
11 arly twofold symmetrical assembly of TnI and TnT subunits penetrated asymmetrically by the dumbbell-s
12 s that the long framework helices of TnI and TnT, presumed to be a Ca(2+)-independent structural doma
17 analyzed all four reported mutants: Arg63His TnT, Arg91Gly beta-TM, Arg174Gln TnI, and a TnI truncati
18 tients, with mice expressing the more benign TnT-R278C mutant (R278C) that does not affect myofilamen
19 bitory effect on binary interactions between TnT and other thin filament proteins, TnI, TnC and Tm.
23 to adult and fetal isoforms of human cardiac TnT (HCTnT3-DeltaE96 and HCTnT1-DeltaE106, respectively)
24 -92W and R-92L missense mutations in cardiac TnT known to alter the flexibility of the TnT tropomyosi
25 earts in which the endogenous intact cardiac TnT was partially replaced by cTnT-ND showed lowered con
26 st, mu-calpain treatment of isolated cardiac TnT resulted in nonspecific degradation, suggesting that
28 demonstrated in naturally occurring cardiac TnT isoforms, indicating a physiological significance.
29 utations in the TM-binding domain of cardiac TnT alter thin filament structure and flexibility suffic
32 eins were complexed with recombinant cardiac TnT/TnC and exchanged into skinned rat cardiac trabecula
34 at the molecular pathogenesis of the cardiac TnT mutation-related cardiomyopathies is different for e
35 uction of the NH2-terminal truncated cardiac TnT (cTnT-ND), indicating a myofibril-associated proteol
37 olecules: (1) NH2-terminal truncated cardiac TnT and (2) chimera proteins consisting of an acidic or
40 e results suggest that patients with certain TnT mutations may respond to certain pathological situat
41 no acid substitution in the highly conserved TnT-binding helix of cardiac TnI (cTnI) in wild turkey h
43 regulated actin filaments containing Delta14 TnT and acrylodan-labeled tropomyosin did not show the f
45 lier that regulated actin containing Delta14 TnT was more readily activated than wild-type regulated
46 with both elevated NT-proBNP and detectable TnT had poorer survival (HR for high NT-proBNP and detec
47 rvival (HR for high NT-proBNP and detectable TnT vs. low NT-proBNP and any TnT: 3.20, 95% CI: 1.91 to
49 Apparently healthy adults with detectable TnT or elevated NT-proBNP levels are at increased risk o
52 276N)+TnT(WT) fibers but increased in Tm(DM)+TnT(45-74Delta) fibers; however, TnT(45-74Delta) did not
53 ss-bridge detachment (g) decreased in Tm(DM)+TnT(WT) and Tm(H276N)+TnT(WT) fibers but increased in Tm
54 truncations of the endogenous and exogenous TnT, despite different amino acid sequences at the cleav
56 oponin T (TnT) mutants (TnT-I79N, TnT-F110I, TnT-R278C), we found that increasing myofilament Ca sens
57 th-old transgenic (Tg) mice expressing F110I-TnT and R278C-TnT did not develop significant hypertroph
58 fibers from transgenic mice expressing F110I-TnT demonstrated increased Ca(2+) sensitivity of force a
59 ) sensitivity of force was observed in F110I-TnT-reconstituted human cardiac muscle preparations.
61 irst time, we discovered that a chicken fast TnT isoform with a unique Tx motif (HEEAH)(n) binds calc
62 ated cardiomyopathy (DCM) mutations in fetal TnT and fetal troponin affect the functional properties
64 Both intact TnT and TnT N-terminal fragment (TnT N47) bound terbium with high affinity indicating tha
66 g) decreased in Tm(DM)+TnT(WT) and Tm(H276N)+TnT(WT) fibers but increased in Tm(DM)+TnT(45-74Delta) f
67 d in Tm(DM)+TnT(45-74Delta) fibers; however, TnT(45-74Delta) did not alter g, demonstrating that S229
72 and stroke in patients with NSTE-ACS and hs-TnT >/=14.0 ng/L in both invasively and noninvasively ma
73 and stroke in patients with NSTE-ACS and hs-TnT >/=14.0 ng/L in both invasively and noninvasively ma
74 n did not affect changes in NT-proBNP and hs-TnT values, and these biomarkers were not associated wit
75 minal pro-B-type natriuretic peptide, and hs-TnT, hs-TnI levels in the fourth compared with the 3 low
77 Immediately prior to cell application, hs-TnT levels to measure myocardial injury and NT-proBNP le
81 .014 mug/l; n = 2,721); elevated baseline hs-TnT levels (hs-TnT >0.014 mug/l) with no further rise po
84 rocedure (n = 516); and elevated baseline hs-TnT levels with a further rise post-procedure (n = 1,647
85 18.2%) in patients with elevated baseline hs-TnT levels with a further rise post-procedure (p < 0.001
86 16.0%) in patients with elevated baseline hs-TnT levels with no further rise post-procedure; and 155
88 tly, only patients with elevated baseline hs-TnT>/=15.19 pg/mL (upper tertile) demonstrated a signifi
90 rel in the noninvasive group CONCLUSIONS: Hs-TnT, NT-proBNP, and GDF-15 are predictors of cardiovascu
95 t hs-TnT quartile to 2.13% in the highest hs-TnT quartile (adjusted hazard ratio [HR]: 1.94; 95% conf
97 2,721); elevated baseline hs-TnT levels (hs-TnT >0.014 mug/l) with no further rise post-procedure (n
98 seline and post-procedural hs-TnT levels (hs-TnT </=0.014 mug/l; n = 742); nonelevated baseline but e
101 embolism ranged from 0.87% in the lowest hs-TnT quartile to 2.13% in the highest hs-TnT quartile (ad
102 h higher levels of concomitantly measured hs-TnT among women but not men, in whom other comorbidities
106 test the hypothesis that serum levels of hs-TnT correlate with cell retention and determine the resp
107 ial injury as measured by serum levels of hs-TnT predicts the reduction of NT-proBNP serum levels at
111 endently associated with higher levels of hs-TnT, suggesting that subclinical myocardial injury may p
115 dural hs-TnT levels (peak post-procedural hs-TnT >0.014 mug/l; n = 2,721); elevated baseline hs-TnT l
117 r the prognostic value of post-procedural hs-TnT level after elective PCI depends on the baseline hs-
118 ctive PCI, an increase in post-procedural hs-TnT level did not offer prognostic information beyond th
119 ; p < 0.001) but not peak post-procedural hs-TnT levels (HR: 1.04; 95% CI: 0.85 to 1.28; p = 0.679) w
120 nonelevated baseline and post-procedural hs-TnT levels (hs-TnT </=0.014 mug/l; n = 742); nonelevated
121 ted baseline but elevated post-procedural hs-TnT levels (peak post-procedural hs-TnT >0.014 mug/l; n
122 ted baseline but elevated post-procedural hs-TnT levels; 50 (16.0%) in patients with elevated baselin
123 nonelevated baseline and post-procedural hs-TnT levels; 54 (3.8%) in patients with nonelevated basel
127 asurement of high-sensitivity troponin T (hs-TnT) and N-terminal pro B-type natriuretic peptide (NT-p
130 -proBNP) and high-sensitivity troponin T (hs-TnT) can be used as surrogate markers and whether geneti
131 tic value of high-sensitivity troponin T (hs-TnT) elevation after elective percutaneous coronary inte
132 of elevated high-sensitivity troponin T (hs-TnT) in 298 patients with heart failure with preserved e
133 tic value of high-sensitivity troponin T (hs-TnT) in addition to clinical risk factors and the CHA2DS
134 sts to measure high-sensitive troponin T (hs-TnT) serum levels revealed the presence of ongoing minut
135 ween OSA and high-sensitivity troponin T (hs-TnT), cardiac structure, and CV outcomes differs by sex.
136 mportance of high-sensitivity troponin T (hs-TnT), N-terminal pro-brain natriuretic peptide (NT-proBN
142 artile range, 11.6-13.1) years follow-up, hs-TnT was related to risk of death or incident heart failu
143 sively managed patients; in patients with hs-TnT <14.0 ng/L, there was no difference between ticagrel
144 sively managed patients; in patients with hs-TnT <14.0 ng/L, there was no difference between ticagrel
147 hin the heart was closely associated with hs-TnT levels in patients with chronic ischemic heart failu
148 characterisation of a novel sensor for human TnT based on a molecularly-imprinted electrosynthesised
149 pressing troponin T (TnT) mutants (TnT-I79N, TnT-F110I, TnT-R278C), we found that increasing myofilam
150 Our model simulation of the data implicates TnT as a participant in the process by which SL- and XB-
153 region, we investigated two classes of model TnT molecules: (1) NH2-terminal truncated cardiac TnT an
154 ) expresses exclusively slow skeletal muscle TnT (ssTnT) together with cardiac forms of troponin I an
156 ofibrils overexpressing fast skeletal muscle TnT produced similar NH2-terminal truncations of the end
158 ition, two mouse cardiac troponin T mutants (TnT(1-44Delta) and TnT(45-74Delta)) that have a divergen
159 om mice expressing troponin T (TnT) mutants (TnT-I79N, TnT-F110I, TnT-R278C), we found that increasin
160 -TnT fusion protein (substituting for normal TnT), and the other end was capped by tropomodulin.
163 a/beta exons, we constructed combinations of TnT cDNAs from a single human fetal fast skeletal TnTbet
164 hat calcium bound to the tertiary complex of TnT and the tropomyosin dimer with a fast on-rate (10(6)
165 ](3-)/[Fe(CN)6](4-) and the concentration of TnT in buffer over the range 0.009-0.8 ng/mL, with a det
166 ions alter the COOH-terminal conformation of TnT and thin filament Ca2+-activation, yet the functiona
168 conclusion, the Ca2+-sensitizing effects of TnT mutations may reduce the responsiveness of mouse hea
169 he formation of a coiled-coil heterodimer of TnT and TnI has been recently confirmed by the crystal s
172 calpain-mediated proteolytic modification of TnT may act as an acute mechanism to adjust muscle contr
173 of troponin, probably representing parts of TnT or the troponin core domain, to promote tropomyosin
175 ts confirmed that the individual peptides of TnT were monomeric but formed heterodimers when mixed wi
176 nylenediamine (o-PD) film in the presence of TnT as a template was performed in acetate buffer (0.5 M
179 the f peptide in the N-terminal T1 region of TnT, has a strong inhibitory effect on binary interactio
180 removing the NH2-terminal variable region of TnT, the mu-calpain-mediated proteolytic modification of
183 se results suggest that different regions of TnT may contribute to the pathogenesis of TnT-linked FHC
185 es, expanding the classic structural role of TnT to a dynamic role regulating sarcomere function.
186 vation, yet the functional core structure of TnT and the mechanism of NH2-terminal modulation are not
197 lity compared with the reference group (peak TnT </= 0.01 ng/mL): peak TnT of 0.02 ng/mL (adjusted ha
198 lity compared with the reference group (peak TnT</=0.01 ng/mL): peak TnT of 0.02 ng/mL (adjusted haza
199 eference group (peak TnT</=0.01 ng/mL): peak TnT of 0.02 ng/mL (adjusted hazard ratio [aHR], 2.41; 95
200 erence group (peak TnT </= 0.01 ng/mL): peak TnT of 0.02 ng/mL (adjusted hazard ratio [aHR], 2.41; 95
201 ultivariable analysis demonstrated that peak TnT values of at least 0.02 ng/mL, occurring in 11.6% of
202 ultivariable analysis demonstrated that peak TnT values of at least 0.02 ng/mL, occurring in 11.6% of
203 We repeated this analysis, adding the peak TnT measurement during the first 3 postoperative days as
204 We repeated this analysis, adding the peak TnT measurement during the first 3 postoperative days as
205 o die within 30 days for the model with peak TnT measurement vs without (C index = 0.85 vs 0.81; diff
206 o die within 30 days for the model with peak TnT measurement vs without (C index = 0.85 vs 0.81; diff
207 g noncardiac surgery, the peak postoperative TnT measurement during the first 3 days after surgery wa
208 g noncardiac surgery, the peak postoperative TnT measurement during the first 3 days after surgery wa
209 at the termini, hence they lack the primary TnT(1)-tropomyosin interaction, allowing study of exon 6
211 nic (Tg) mice expressing F110I-TnT and R278C-TnT did not develop significant hypertrophy or ventricul
212 the maximal ATPase was not different (R278C-TnT) or only slightly less (F110I-TnT) than that of non-
215 idues N-terminal to the conserved HR region (TnT residues 165-178) are essential for the stable coile
216 57033 mimicked the effects of Ca-sensitizing TnT mutants and produced pause-dependent ventricular ect
217 nsgenic mice expressing the Ca2+-sensitizing TnT-I79N mutant (I79N), which causes a high rate of sudd
218 rat cardiac TnT (cTnT) and rat fast skeletal TnT (fsTnT) reconstituted cardiac muscle preparations we
219 on the biological function of fast skeletal TnT and this can be correlated with changes in the Ca2+
220 binant deletion mutants of the fast skeletal TnT to determine the minimal sequence required for stabl
224 etectable amount of truncated or intact slow TnT proteins, indicating a muscle cell-specific proteoly
227 he data demonstrated a critical role of slow TnT in diaphragm function and in the pathogenesis and pa
230 ated the effect of enhancer deletion on slow TnT gene expression in vivo and functional consequences.
231 in undifferentiated myoblasts produced slow TnT mRNA but not a detectable amount of truncated or int
232 nce of intact or prematurely terminated slow TnT polypeptide in Amish nemaline myopathy (ANM) patient
233 sted that the 5'-enhancer region of the slow TnT gene overlaps with the structure of the upstream car
237 Rapid degradation of the truncated slow TnT protein, rather than instability of the nonsense mRN
241 stic value of detectable cardiac troponin T (TnT) and elevated N-terminal pro-B-type natriuretic pept
243 The three isoforms of vertebrate troponin T (TnT) are normally expressed in a muscle type-specific ma
244 this study was to elucidate how troponin T (TnT) dilated cardiomyopathy (DCM) mutations in fetal TnT
245 the physiological effects of the troponin T (TnT) F110I and R278C mutations associated with familial
246 exon 11 of slow skeletal muscle troponin T (TnT) gene (TNNT1) causes an autosomal-recessive inherite
247 ternative splicing from a single troponin T (TnT) gene produce multiple developmentally regulated and
248 ral and COOH-terminal regions of troponin T (TnT) interact with troponin C, troponin I, and tropomyos
251 minal variable region of cardiac troponin T (TnT) is a regulatory structure that can be selectively r
252 re of the NH2-terminal region of troponin T (TnT) is hypervariable among the muscle type-specific iso
255 es isolated from mice expressing troponin T (TnT) mutants (TnT-I79N, TnT-F110I, TnT-R278C), we found
258 The loss of slow skeletal muscle troponin T (TnT) results in a recessive nemaline myopathy in the Ami
259 nown that the flexibility of the troponin T (TnT) tail determines thin filament conformation and henc
260 is study, polymer imprinted with troponin T (TnT) was assessed using electrochemical methods and the
263 wed negligible interference from troponin T (TnT), bovine serum albumin (BSA) and urea under SWV assa
264 letal muscle regulatory proteins troponin T (TnT), troponin I (TnI), and beta-tropomyosin (beta-TM) h
265 sociated with phosphorylation of troponin T (TnT), troponin I (TnI), and myosin-binding protein C (C-
272 tory peptide region that binds to actin, the TnT-TnI coiled-coil, and the TnC COOH domain that contai
278 dulates the conformation and function of the TnT core structure to fine-tune muscle contractility.
281 ac TnT known to alter the flexibility of the TnT tropomyosin-binding domain, we found mutation-specif
286 lly rescuing mutations demonstrated that TnI-TnT interaction is a critical link in the Ca(2+) signali
287 sensor was shown to have a high affinity to TnT in comparison with non-imprinted polymer (NIP) elect
289 f the MIP-modified electrode with respect to TnT concentration resulted in a suppression of the ferro
290 eceptor-modi fi ed electrode with respect to TnT concentration resulted in a suppression of the ferro
291 sequence heterogeneity present in wild-type TnT isoforms, irrespective of the stage of development.
295 P value approach to determine if there were TnT thresholds that independently altered patients' risk
296 P value approach to determine if there were TnT thresholds that independently altered patients' risk
297 ry heart tube and pharyngeal endoderm, while TnT-Cre is expressed only within the specified heart tub
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