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1 MAO A is a key enzyme that degrades a number of monoamin
2 MAO A was measured using PET and serial scans with the M
3 MAO-A density (by Western blot) and activity (by [(14)C]
4 MAO-A expression was decreased in 95.4% of human cancer
5 MAO-A inhibition prevents these changes, and also revers
6 MAO-A is the primary enzyme metabolizing catecholamines
7 MAO-A KD decreased basal reactive oxygen species levels
8 MAO-A KD specifically increased the activity of complex
9 MAO-A VT (an index of MAO-A density) was measured using
10 MAO-A VT was significantly greater in the PFC (37%, inde
11 A)) = 260 nM; IC(50)(MAO-B) = 200 nM; IC(50)(MAO-A) = 10 muM) and dose dependently counteracts halope
12 rexpression, R1 small interfering RNA, and a MAO A inhibitor, we found that R1 and MAO A act upstream
13 t study, we compared the protein levels of a MAO A-transcriptional activator, Kruppel-like factor 11
17 otonin-degrading enzyme monoamine oxidase A (MAO A) is an important source of hydrogen peroxide in ra
18 reduced levels of brain monoamine oxidase A (MAO A) leading to speculation that MAO A inhibition by t
20 The genetic deletion of monoamine oxidase A (MAO A), an enzyme that breaks down the monoamine neurotr
22 ing evidence shows that monoamine oxidase A (MAO A), the key enzyme catalyzing serotonin (5-hydroxytr
23 has been reported that monoamine oxidase A (MAO A, a major neurotransmitter-degrading enzyme) is sig
26 n mice expressing a dominant-negative MAO-A (MAO-A(neo)), which were more protected against pressure
27 selective inhibitors of monoamine oxidase A (MAO-A) and B (MAO-B) holds a therapeutic relevance in th
32 of the 40% increase in monoamine oxidase A (MAO-A) levels that occurs during PPB, a dietary suppleme
33 abnormality is elevated monoamine oxidase A (MAO-A) levels, which occurs in the prefrontal and anteri
37 se in the expression of monoamine oxidase-A (MAO-A) and MAO-B in the lateral OFC and by a decrease in
39 that high expression of monoamine oxidase-A (MAO-A) is associated with positive ARv7 detection in CRP
41 thyltransferase (COMT), monoamine oxidase-A (MAO-A), vesicular monoamine transporter (VMAT1,2) and ch
42 he mitochondrial enzyme monoamine oxidase-A (MAO-A), which produces hydrogen peroxide as a catalytic
45 BPD was associated with greater PFC and ACC MAO-A VT compared with moderate BPD, MDE, and healthy co
50 reveals for the first time that KLF11 is an MAO A regulator and is produced in response to neuronal
54 p38 kinase inhibitor, R1 overexpression, and MAO A inhibitor, we have shown that MAO A and R1 are dow
58 ytes and human HSCs express 5HTR2A/2B/2C and MAO-A/TPH1; treatment of these cell lines with 5HTR2A/2B
59 al function, notably complex I activity, and MAO-A may be a target for protection against neurodegene
63 T(B), 5-HT(A), 5-HT(B), and D receptors, and MAO-A was determined by Q-RT-PCR and data subjected to m
64 9 nM; selective versus other AR subtypes and MAO-A), which inhibited A2AAR-induced cAMP accumulation
65 our results show that targeting the Enz/ARv7/MAO-A signaling with the antidepressants phenelzine or c
68 creased levels of monoamine oxidase A and B (MAO A and B) leading to increased dopamine turnover in t
69 including human monoamine oxidases A and B (MAO A and MAO B) show aromatic amino acid residues orien
70 the membrane-bound forms of MAO A and MAO B (MAO A Y444 mutant enzymes are found to be unstable on me
75 ure studies should investigate links between MAO-A suppression and the development of cancer to deter
79 Here we report for the first time that brain MAO A correlates inversely with the MPQ trait measure of
82 ositron emission tomography to measure brain MAO-A V(T) on two different days: One under acute psycho
84 s provide the first direct evidence of brain MAO-A inhibition in humans by formulations of selegiline
86 erved a significant reduction in whole-brain MAO-A binding as reflected by reductions in 10 of 11 bra
91 ssure overload, norepinephrine catabolism by MAO-A is increased accompanied by exacerbated oxidative
94 sible metabolism of certain hallucinogens by MAO-A, which would cause a bias in the detectability of
99 croRNA (miRNA) was used to stably knock down MAO-A mRNA, protein, and catalytic activity by 60-70% in
101 nt designed to counter functions of elevated MAO-A activity eliminates vulnerability to depressed moo
104 ative symptoms were associated with elevated MAO-A VT in the PFC and ACC (MANOVA, severity: F(2,38)=5
105 sis that a polymorphism in the gene encoding MAO-A contributes to the genetic risk for conduct disord
107 Rv7 expression can transcriptionally enhance MAO-A expression resulting in Enz resistance via alterin
108 rgic receptor-dependent mechanisms, enhanced MAO-A activity coupled with increased intramyocardial no
109 mice lacking the monoamine metabolic enzymes MAO A and MAO B (MAO AB-deficient mice) exhibit diminish
110 on was demonstrated between the affinity for MAO A, but not MAO B, and the levels of 3,4-dihydroxyphe
111 esults suggest that FoxO1 is a repressor for MAO A transcription, and its phosphorylation is involved
113 The synthesized compounds were evaluated for MAO-A, MAO-B, and AChE inhibitory activities as potentia
115 avior in the MAO A/B KO mice, different from MAO A or B single KO mice, suggest that varying monoamin
116 ic MAO A transgenic mice were generated from MAO A knock-out (KO) mice by using the promoter of calci
120 D and a microarray analysis reported greater MAO-A messenger RNA in the PFC of rodents exposed to alc
121 drinking correlated positively with greater MAO-A VT in the PFC (r = .67, p = .005) and all brain re
122 ; ACC: r = .38, p = .046), while hippocampus MAO-A VT was negatively correlated with verbal memory (r
126 ctively countered the enhanced aggression in MAO A KO mice, at doses that did not inherently affect m
127 nd glia cells indicate that these changes in MAO A and B are a direct consequence of loss of insulin
130 our findings suggest that excessive 5-HT in MAO-A-deficient mouse embryos triggers cellular signalin
131 III and IV resulted in a similar increase in MAO-A expression, while up-regulation of MAO-A was lower
132 eover, we found that elevated 5-HT levels in MAO-A knockdown embryos coincided with an enhanced activ
133 dexamethasone) and androgen (R1881) increase MAO A promoter and catalytic activities in human neurobl
135 y regulatory mechanisms leading to increased MAO A catalytic activity and mRNA levels because of dire
138 F11 knockdown reduces glucocorticoid-induced MAO A expression in cultured neurons; 3) induction of KL
139 ates the relationship between stress-induced MAO A and the transcription factor Kruppel-like factor 1
140 lly repressed both the basal and VPA-induced MAO A catalytic and promoter activities to 30 to 60%.
141 ctor were required for dexamethasone-induced MAO-A mRNA expression, as blockade of the GR with RU 486
144 st cigarette smoke constituents that inhibit MAO-A, in the range seen in chronic smokers, are likely
145 but not DAT; and while Emsam also inhibited MAO-A (33.2+/-28.9 (range 9-68%) the difference did not
146 ydis selegiline dose significantly inhibited MAO-A (36.9+/-19.7%, range 11-70%, p<0.007)) but not DAT
148 um starvation-induced apoptosis, p38 kinase, MAO A, and caspase-3 were increased, whereas Bcl-2 and R
152 comparison with male wild-type littermates, MAO A/B KO mice exhibited abnormally high and overgenera
154 ading some of these substances, reduced lung MAO A may contribute to some of the physiologic effects
157 armine positron emission tomography measured MAO-A total distribution volume (MAO-A VT), an index of
159 ested in mice expressing a dominant-negative MAO-A (MAO-A(neo)), which were more protected against pr
160 ons of monoamines, because of the absence of MAO A and MAO B, cause functional alterations that are a
161 ed mRNA decay and resulted in the absence of MAO A transcript, protein, and catalytic activity and ab
168 so observed with the membrane-bound forms of MAO A and MAO B (MAO A Y444 mutant enzymes are found to
169 ry, this study demonstrates the functions of MAO A and its repressor R1 in apoptotic signaling pathwa
170 labeling of 5-HT, and immunocytochemistry of MAO A were found in the frontal cortex, striatum, and hi
173 norepinephrine, and DA and higher levels of MAO A metabolite 5-hydroxyindoleacetic acid were found i
174 2) overexpressing KLF11 increases levels of MAO A mRNA and enzymatic activity, which is further enha
175 nowledge of the structures and mechanisms of MAO A and MAO B, which are pharmacological targets for s
176 Notably, the prefrontal cortex (PFC) of MAO A KO mice exhibited higher expression of NR2A and NR
177 t in healthy adult males the gene product of MAO A in the brain, rather than the gene per se, would b
179 r, these results underscore the relevance of MAO A as a neurochemical substrate of aberrant aggressio
182 n the present study, the cognitive status of MAO A/B knockout (KO) mice was examined with a wide arra
183 level was much lower, whereas the amount of MAO-A protein was not determined due to the lack of a su
184 sis found that significant downregulation of MAO-A, the enzyme that metabolizes serotonin, occurred i
185 ability demonstrated a significant effect of MAO-A genotype in the raphe nuclei, medial and inferior
187 l OFC and by a decrease in the expression of MAO-A, MAO-B, and tryptophan hydroxylase in the dorsal r
189 nduced dose- and time-dependent increases of MAO-A gene and protein expression, while its effects on
191 of acute stress upon MAO-A V(T,) an index of MAO-A density, in human brain and acute glucocorticoid e
192 distribution volume (MAO-A VT), an index of MAO-A density, in severe BPD subjects (n = 14), moderate
193 We hypothesized that MAO-A VT, an index of MAO-A level, is elevated in the prefrontal cortex (PFC)
196 we shed light on how selective inhibition of MAO-A and MAO-B can be achieved by geometric isomers of
197 for nicotine to the left, (2) inhibition of MAO-A, but not MAO-B, increases low-dose nicotine self-a
199 ntrast, targeted inhibition and knockdown of MAO-A expression (E7.5-E10.5) caused structural abnormal
207 ta and gamma) increased the transcription of MAOs A and B; the effects were abolished by parkin, but
211 ity and reversed neurovegetative symptoms on MAO-A VT in the PFC and ACC was analyzed using a multiva
212 t and selective MAO-B (high selectivity over MAO-A) and AChE inhibitor in the series with IC(50) valu
216 t time that VPA activates monoamine oxidase (MAO) A catalytic activity, mRNA level, and promoter acti
217 ed that partially reduced monoamine oxidase (MAO) A contains an equilibrium mixture of an anionic fla
218 lished that abrogation of monoamine oxidase (MAO) A expression leads to a neurochemical, morphologica
222 an hydroxylase (TPH1) and monoamine oxidase (MAO-A) are the key enzymes for the synthesis and catabol
223 gous to the mitochondrial monoamine oxidases MAO-A/B and produces hydrogen peroxide in the nucleus as
225 se nicotine self-administration, (3) partial MAO-A inhibition, to the degree observed in chronic ciga
226 duced a premature stop codon, which produced MAO A/B double knock-out (KO) mice in a MAO B KO mouse c
229 state (M2)-specific genes (Mannose receptor, MAO-A, and CD36) and therefore conclude that Hck acts as
231 g sites; 4) KLF11 knockout mice show reduced MAO A mRNA and catalytic activity in the brain cortex co
233 y substituents yielded significantly reduced MAO-A inhibition relative to the unsubstituted compound
243 ken together, these results demonstrate that MAO A is a novel target for VPA via Akt/FoxO1 signaling
246 ion, and MAO A inhibitor, we have shown that MAO A and R1 are downstream of p38 kinase and Bcl-2, but
247 xidase A (MAO A) leading to speculation that MAO A inhibition by tobacco smoke may underlie some of t
249 pment of cancer to determine the extent that MAO-A suppression contributes to increased cancer risk.
258 hase/escape and anxiety-like behavior in the MAO A/B KO mice, different from MAO A or B single KO mic
260 personality traits) such that the lower the MAO A activity in cortical and subcortical brain regions
262 A levels because of direct activation of the MAO A promoter via Sp/KLF-binding sites; 4) KLF11 knocko
264 measured using PET and serial scans with the MAO A-specific radiotracers (11)C-clorgyline and deuteri
265 (3) dopamine agonist, can be modified by the MAO(A) inhibitor clorgyline, by a mechanism apparently u
269 We hypothesized that polymorphism in the MAO-A gene would be associated with sex-specific variati
274 ic inhibition of 5-Htr6 activity rescued the MAO-A knockdown phenotype and restored apoptotic activit
275 low dipole moment increased the affinity to MAO A, whereas groups with high dipole moment yielded co
276 es peripheral organs as well as the brain to MAO A-inhibitory compounds, we determined whether smoker
278 ivatives exhibited outstanding affinities to MAO-A (7.0 nM < IC50 < 49 nM, much higher than moclobemi
279 n vitro high affinity and selectivity toward MAO-A isoenzyme, compared to clorgyline and moclobemide,
281 brain and acute glucocorticoid exposure upon MAO-A levels in human neuronal and glial cell lines.
282 s are to assess effects of acute stress upon MAO-A V(T,) an index of MAO-A density, in human brain an
283 n an important role of KLF11 in upregulating MAO A in MDD and chronic social stress, suggesting that
284 4d, 14e, and 14g) showing selectivity versus MAO A and remarkably inhibiting colony formation in THP-
285 MAO-B 0.386 nM, >25000-fold selective versus MAO-A) and N-(3,4-dichlorophenyl)-1H-indole-5-carboxamid
288 IC50 human MAO-B 1.59 nM, selectivity versus MAO-A>6000-fold), high potency and selectivity are optim
289 hy measured MAO-A total distribution volume (MAO-A VT), an index of MAO-A density, in severe BPD subj
290 ontains a noncovalently bound flavin whereas MAO A contains a flavin covalently bound to a cysteinyl
293 ortex barrel field structure associated with MAO A KO mice was restored and became morphologically si
297 Depression diagnosis was not associated with MAO-A genotype or 5-HT(1A) receptor availability in thes
298 strual cycle length, was not associated with MAO-A VT (F8,18 = 0.548; P = .81) but tendency to cry wa
299 ndency to cry was positively correlated with MAO-A VT in the prefrontal cortex (r = 0.54; P = .008).