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Showing 1-20 of 20 results for "M4001" within Papers
D J Morton
Journal of pineal research, 4(1), 7-11 (1987-01-01)
Pineal glands were incubated in the presence of [3H] methoxytryptophan with and without methoxamine, epinephrine, and norepinephrine. The beta-adrenoceptor-stimulated pineal glands were capable of converting methoxytryptophan to methoxytryptamine, melatonin, methoxyindole acetic acid, and methoxytryptophol, albeit in small quantities. Only methoxyindole
Anika Kremer et al.
Applied microbiology and biotechnology, 79(6), 951-961 (2008-05-16)
Recently, a gene for a 7-dimethylallyltryptophan synthase (7-DMATS) was identified in Aspergillus fumigatus and its enzymatic function was proven biochemically. In this study, the behaviour of 7-DMATS towards aromatic substrates was investigated and compared with that of the 4-dimethylallyltryptophan synthase
J van Benthem et al.
Journal of neural transmission, 67(1-2), 147-162 (1986-01-01)
Testes weight, plasma FSH and LH concentration and pineal methylating capacity were compared in hamsters housed under either long (LD14:10) or short (LD8:16) photoperiods. Hamsters housed for 14 weeks under short photoperiod showed gonadal atrophy, which was complete after 6
D J Morton
Journal of pineal research, 6(2), 141-147 (1989-01-01)
Administration of methoxyindoles to rats in both the morning and the afternoon caused significant changes in circulating plasma cation levels. All the methoxyindoles except melatonin were without effect at doses below 100 micrograms/kg; the observed changes caused by doses of
J van Benthem et al.
Journal of neural transmission, 61(3-4), 219-237 (1985-01-01)
Until now the day/night and seasonal rhythmicity in the synthesis of 5-methoxyindoles (MI) is thought to be regulated by environmental factors, especially photoperiod and temperature. Endogenous factors are also implicated in the generation of N-acetyltransferase and hydroxyindole-O-methyltransferase activity rhythms. In
Widiastuti Setyaningsih et al.
Food chemistry, 225, 1-9 (2017-02-15)
A Box-Behnken design was used in conjunction with multiresponse optimization based on the desirability function to carry out the simultaneous separation of tryptophan and 15 derivatives by Ultra Performance Liquid Chromatography. The gradient composition of the mobile phase and the
D W Pierce et al.
Biophysical journal, 68(4), 1583-1591 (1995-04-01)
The change in permanent dipole moment (magnitude of delta mu) for the transition from the 1La state to the ground state of tryptophan is the key photophysical parameter for the interpretation of tryptophan fluorescence spectra in terms of static and
C Haldar-Misra et al.
Cell and tissue research, 230(1), 113-126 (1983-01-01)
The effects of different 5-methoxyindoles on the process of protein/peptide secretion characterized by the formation of granular vesicles (GV) have been studied in mouse pinealocytes maintained in explant culture. All 5-methoxyindoles studied clearly influence the number of granular vesicles in
J A McNulty et al.
Endocrinology, 117(3), 1035-1042 (1985-09-01)
A correlative radioimmunological-biochemical-ultrastructural study of the rat pineal gland was undertaken during the summer months when pineal arginine vasotocin (AVT) immunoactivity increases up to 200-fold. RIA confirmed a rapid rise in AVT activity during mid-August regardless of the time of
G L Brammer
Life sciences, 55(10), 775-787 (1994-01-01)
Markedly increased melatonin levels in plasma have been observed in response to tryptophan administration. This post-tryptophan melatonin increase has been attributed to the duodenum. Because extra-pineal sources of melatonin may be important in interpreting the meaning of altered melatonin production
P Pévet et al.
Journal of neural transmission, 51(3-4), 271-282 (1981-01-01)
Using a method in which no substrate is added to the incubation medium, the capacity of HIOMT to synthesize 5-methoxytryptophan, 5-methoxytryptamine, 5-methoxyindole-3-acetic acid, 5-methoxytryptophol and melatonin has been determined in the pineal and the eyes of the mole, a mammal
M G Balemans et al.
Journal of neural transmission, 49(1-2), 107-116 (1980-01-01)
In the pineal of 21-day old male Wistar rats hydroxyindole-O-methyltransferase (HIOMT) activities involved in the synthesis of several 5-methoxyindoles were determined during the night in April, June, October and January. A high HIOMT activity for the synthesis of melatonin/5-methoxytryptophol was
Elizabeth S Booth et al.
The Journal of biological chemistry, 290(52), 30924-30930 (2015-10-30)
The kynurenine pathway is the major route of L-tryptophan (L-Trp) catabolism in biology, leading ultimately to the formation of NAD(+). The initial and rate-limiting step of the kynurenine pathway involves oxidation of L-Trp to N-formylkynurenine. This is an O2-dependent process
M G Balemans et al.
Journal of neural transmission, 58(1-2), 121-134 (1983-01-01)
The pineals of 28 days old male Wistar rats, in December periodically exposed to either white or green light, were incubated with pterin-6-aldehyde or reduced neopterin. In white light the rhythm of synthesis of 5-methoxytryptophan and of 5-methoxyindole-3-acetic acid was
Huei-Hsuan Cheng et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(33), 13231-13236 (2012-08-02)
Cyclooxygenase-2 (COX-2) expression is induced by mitogenic and proinflammatory factors. Its overexpression plays a causal role in inflammation and tumorigenesis. COX-2 expression is tightly regulated, but the mechanisms are largely unclear. Here we show the control of COX-2 expression by
W F Flight et al.
Journal of neural transmission, 58(3-4), 223-230 (1983-01-01)
In the present study, the synthesis of methoxyindoles in the neural part and in the pigment epithelial layer of the retina of the frog eye was investigated on the basis of naturally occurring substrate at regular intervals during a 24
M Leino et al.
Medical biology, 63(4), 160-169 (1985-01-01)
Melatonin and other 5-methoxyindoles are compounds usually associated with the pineal gland. Research is expanding from studies of pineal melatonin to studies of extrapineal organs and of other 5-methoxyindoles besides melatonin. Research in recent years has shown that the retina
N Honda et al.
Proteins, 26(4), 459-464 (1996-12-01)
The wild-type trp repressor of E. coli bound 5-methoxytryptophan, a Trp analogue, less tightly than Trp. A mutant repressor (Val58-->Ala) that should bind 5-methoxytryptophan preferentially to Trp was computationally designed by free-energy calculations accompanied by free-energy decomposition. The designed mutant
P Pévet et al.
Journal of neural transmission, 51(3-4), 303-311 (1981-01-01)
S.c. injection of 25 microgram of methoxytryptamine (5-MT) in oil into adult male hamsters given between 4.30 and 5 p.m. (light on from 5 a.m. to 7 p.m.: 14 L/10 D) for 51 consecutive days caused involution of the testes.
Dan-Qian Chen et al.
Nature communications, 10(1), 1476-1476 (2019-04-02)
Early detection and accurate monitoring of chronic kidney disease (CKD) could improve care and retard progression to end-stage renal disease. Here, using untargeted metabolomics in 2155 participants including patients with stage 1-5 CKD and healthy controls, we identify five metabolites
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