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Bargiela D, Cunha PP, Veliça P, Foskolou IP, Barbieri L, Rundqvist H, Johnson RS. Vitamin B6 Metabolism Determines T Cell Anti-Tumor Responses. Front Immunol 2022; 13:837669. [PMID: 35251031 PMCID: PMC8891565 DOI: 10.3389/fimmu.2022.837669] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/27/2022] [Indexed: 12/31/2022] Open
Abstract
Targeting T cell metabolism is an established method of immunomodulation. Following activation, T cells engage distinct metabolic programs leading to the uptake and processing of nutrients that determine cell proliferation and differentiation. Redirection of T cell fate by modulation of these metabolic programs has been shown to boost or suppress immune responses in vitro and in vivo. Using publicly available T cell transcriptomic and proteomic datasets we identified vitamin B6-dependent transaminases as key metabolic enzymes driving T cell activation and differentiation. Inhibition of vitamin B6 metabolism using the pyridoxal 5'-phosphate (PLP) inhibitor, aminoxyacetic acid (AOA), suppresses CD8+ T cell proliferation and effector differentiation in a dose-dependent manner. We show that pyridoxal phosphate phosphatase (PDXP), a negative regulator of intracellular vitamin B6 levels, is under the control of the hypoxia-inducible transcription factor (HIF1), a central driver of T cell metabolism. Furthermore, by adoptive transfer of CD8 T cells into a C57BL/6 mouse melanoma model, we demonstrate the requirement for vitamin B6-dependent enzyme activity in mediating effective anti-tumor responses. Our findings show that vitamin B6 metabolism is required for CD8+ T cell proliferation and effector differentiation in vitro and in vivo. Targeting vitamin B6 metabolism may therefore serve as an immunodulatory strategy to improve anti-tumor immunotherapy.
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Affiliation(s)
- David Bargiela
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Pedro P. Cunha
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Pedro Veliça
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Iosifina P. Foskolou
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Laura Barbieri
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Helene Rundqvist
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Randall S. Johnson
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
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Abstract
OBJECT Pyridoxal-5-phosphate (PLP), the biologically active form of pyridoxine, can rescue neurons from death in vitro and in vivo. In the present project, the authors have studied whether MC-1, an analog of PLP, alone or in combination with the thrombolytic agent tissue plasminogen activator (tPA), can protect the brains of rats injured by ischemia. METHODS Ischemic brain injury was induced in rats by injecting a preformed blood clot in the middle cerebral artery (MCA). Neurological deficits and infarct volumes caused by the embolus were measured to evaluate the effects of MC-1 on the ischemic injury. Systemic blood pressure and local brain blood flow were also monitored. Administration of different doses of MC-1 1 hour after embolization significantly reduced the infarct volume and improved functional recovery. Injection of MC-1 (40 mg/kg) at 3 or 6 hours after embolization also reduced the volume of the infarct significantly and improved functional recovery. Combined treatment with MC-1 and tPA was also neuroprotective, although it was not superior to treatment involving either MC-1 or tPA alone. Treatment with MC-1 did not result in significant changes in either systemic blood pressure or local blood flow in the ischemic brain. CONCLUSIONS These data support the hypothesis that in the focal embolic stroke model in rats MC-1 is a neuroprotective agent. The neuroprotection this compound provides still exists when MC-1 administration is delayed up to 6 hours after ischemic injury.
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Affiliation(s)
- Chen Xu Wang
- Stroke Research Laboratory, University of Alberta, Edmonton, Canada
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Sherwood AL, Davis WC, Ho S, Macher BA, Stroud MR, Upchurch DA, Holmes EH. A GDP-fucose-protected, pyridoxal-5'-Phosphate/NaBH(4)-sensitive lys residue common to human alpha1-->3Fucosyltransferases corresponds to Lys(300) in FucT-IV. Biochem Biophys Res Commun 2000; 273:870-6. [PMID: 10891339 DOI: 10.1006/bbrc.2000.3018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Human alpha1-->3/4fucosyltransferases (FucTs) contain a common essential pyridoxal-5'-phosphate(PLP)/NaBH(4) reactive, GDP-fucose-protectable Lys. For identification, site-directed mutants at lysines of FucT-IV and -VII were prepared and tested. Non conserved lysine mutants K119Y and K394Q were similar to wild-type FucT-IV. However, mutants of conserved lysines K228R and K300R were distinct. The specific activity of K228R was 2- to 3-fold lower but retained K(m) values for donor and acceptor substrates as wild-type FucT-IV. The specific activity of K300R was reduced over 400-fold with an apparent K(m) for GDP-fucose over 200 microM. FucT-VII mutants K169R and K240R (equivalent to K228R and K300R for FucT-IV, respectively) were inactive. No change in PLP/NaBH(4) sensitivity occurred with K119Y, K228R, and K394Q compared to wild-type FucT-IV. These and previous results (A. L. Sherwood, A. T. Nguyen, J. M. Whitaker, B. A. Macher, M. R. Stroud, and E. H. Holmes, J. Biol. Chem. 273, 25256-25260, 1998) demonstrate that of three conserved lysines in FucT-IV, two (Lys(228) and Lys(283)) are not involved in substrate binding but perhaps in catalysis. The third site, Lys(300), is involved in GDP-fucose binding and PLP/NaBH(4) inactivation.
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Affiliation(s)
- A L Sherwood
- Department of Cell Surface Biochemistry, Molecular Medicine, Northwest Hospital, 2203 Airport Way South, Suite 200, Seattle, Washington 98134, USA
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Abstract
Lys601 in NADPH-cytochrome P-450 reductase is modified by reductive alkylation with pyridoxal 5'-phosphate (pyridoxylation). Lys601 is protected against modification by the cosubstrate NADP(H).
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Affiliation(s)
- K Müller
- Biochemisches Institut (Fachbereich Humanmedizin), Justus Liebig Universität, Giessen, FRG
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Slavik M, Narasimhan TR, Riley C, Slavik J. Changes in serum copper and zinc during treatment with anticancer drugs interfering with pyridoxal phosphate. Adv Exp Med Biol 1989; 258:235-42. [PMID: 2516708 DOI: 10.1007/978-1-4613-0537-8_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Hexamethylmelamine, pentamethylmelamine and procarbazine are anticancer drugs known to interfere with pyridoxal phosphate. This paper presents results on copper and zinc serum levels during the treatment with each of these drugs used as single agents. Six NZW rabbits weighing 2.7-4.5 kg were used in these experiments. Hexamethylmelamine and procarbazine were administered by gastric gavage and pentamethylmelamine by intravenous route at the daily doses of 100 mg, 30 mg and 50 mg/kg of body weight respectively for up to four days. Blood samples were collected in metal free tubes at fasting state before and during the treatment. Student's paired t-test was used for statistical analysis. The pretreatment serum copper concentration significantly (p = 0.05) increased and conversely the serum zinc concentration significantly (p = 0.05) decreased during each drug treatment. Consequently the copper/zinc ration significantly increased from 0.32, 0.33 and 0.27 to 1.16, 0.63 and 1.13 for hexamethylmelamine, pentamethylmelamine and procarbazine respectively. These results indicate, that daily administration of three anticancer drugs interfering with pyridoxal phosphate causes changes in serum copper and zinc levels with inversed relationship between both changes.
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Affiliation(s)
- M Slavik
- Department of Medicine, University of Kansas Medical Center, Kansas City 66103
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Beattie DS, Scotto AW, Reddy U, DeLoskey R, Bosch CG. Pyridoxal phosphate protects against an irreversible temperature-dependent inactivation of hepatic delta-aminolevulinic acid synthase. Arch Biochem Biophys 1985; 236:311-20. [PMID: 3966797 DOI: 10.1016/0003-9861(85)90631-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The stability of hepatic delta-aminolevulinic acid synthase (ALAS), the first and rate-limiting enzyme of the heme biosynthetic pathway, was investigated. Incubation of the mitochondrial matrix fraction obtained from either control or allylisopropylacetamide-induced rats at 37 degrees C in Tris-Cl, pH 7.4, EDTA, and dithiothreitol resulted in a rapid decrease in ALAS activity such that 50-70% of the activity was lost after 30 min. Similar decreases in ALAS activity were observed when a cytosolic fraction from the induced animals was incubated at 37 degrees C. Addition of 0.1 mM pyridoxal-P, the cofactor of ALAS, to the preincubation medium completely prevented the observed loss of activity; however, dialysis of the inactive matrix fraction against several changes of buffer containing pyridoxal-P did not restore activity, suggesting that the inactivation was irreversible. These decreases in ALAS activity in the absence of pyridoxal-P were temperature dependent, as a 55% loss of ALAS activity was observed after a 60-min incubation at 30 degrees C, while the enzyme was completely stable when preincubated at 22 degrees C for 60 min. This inactivation of ALAS does not appear to involve proteolytic digestion, as addition of a wide spectrum of protease inhibitors to the preincubation medium in the absence of pyridoxal-P did not protect against the inactivation. The suggestion is made that the cofactor, pyridoxal-P, may dissociate from the enzyme during the preincubation and, consequently, the apoenzyme may be irreversibly inactivated at temperatures above 22 degrees C.
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Heidemann E, Waller HD. [Disorders of erythropoiesis and the immune system caused by alcohol. 1. Erythropoiesis]. Fortschr Med 1983; 101:1578-82. [PMID: 6685100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abstract
The intracerebroventricular injection of pyridoxal phosphate (PLP, 0.125-1.25 mumol/rat) causes epileptic seizures (4 min leads to 1 min) that are preventable or reversible by GABA (1 mumol/rat), by muscimol (0.025 mumol/rat), or by diazepam (1.75 mumol/rat). At the peak of PLP-induced convulsions, the activities of GAD and GABA-T in 14 regions of rat brain remained unaltered, whereas the concentrations of PLP remained elevated. The PLP-induced convulsion was blocked by DABA (10 mumol/rat) but was not altered by beta-alanine (50 mumol/rat). The previous in vitro studies have shown that PLP increases the uptake of [3H]GABA into synaptosomes and inhibits the binding of [3H]GABA to synaptic membranes. These data suggest that PLP-induced convulsion is due to reduced availability of GABA to its recognition sites, rather than to alteration in the activity of GABA metabolizing enzymes, or unavailability of PLP as a coenzyme for GAD and GABA-T. Since the duration of PLP-induced epileptic seizures is short and can be prevented by GABA agonists, PLP may be used as a tool to study the nature of GABA-mediated neuroinhibition and the properties of GABA receptor sites.
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Araya A, Litvak S. Studies on the interaction of tRNA and avian myeloblastosis DNA polymerase. Cold Spring Harb Symp Quant Biol 1979; 43 Pt 1:631-7. [PMID: 89926 DOI: 10.1101/sqb.1979.043.01.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Sawaya C, Horton R, Meldrum B. Transmitter synthesis and convulsant drugs: effects of pyridoxal phosphate antagonists and allylglycine. Biochem Pharmacol 1978; 27:475-81. [PMID: 24451 DOI: 10.1016/0006-2952(78)90380-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Talbot JC, Gros C, Cosson MP, Pantaloni D. Physicochemical evidence for the existence of two pyridoxal 5'-phosphate binding sites on glutamate dehydrogenase and characterization of their functional role. Biochim Biophys Acta 1977; 494:19-32. [PMID: 20155 DOI: 10.1016/0005-2795(77)90131-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Kinetic studies of pyridoxal 5'-phosphate binding to glutamate dehydrogenase (EC 1.4.1.3) has provided evidence for two specific binding sites, chemically identified as Lys 126 and Lys 333. Use of protecting ligands permitted the selective modification of only one of these lysines, and showed that (1) Lys 333 modification results in depolymerisation of the enzyme into active hexamers; (2) Lys 126-modified enzyme was 92% inactivated. The residual activity was desensitized to GTP. The inactivation process was cooperative, maximum inactivation occurring as soon as half of the Lys 126 were modified.
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Abstract
1. Pig heart mitochondrial malate dehydrogenase incubated with pyridoxal 5'-phosphate at pH 8.0 and 25 degrees C gradually loses activity. Such inactivation can be largely reversed by dialysis or by addition of L-lysine or L-cysteine, and can be made permanent by NaBH4 reduction. 2. Modification of malate dehydrogenase with pyridoxal 5'-phosphate at 35 degrees C involves two phases, an initial inactivation which is reversible and a slower irreversible second stage. 3. The initial reaction between pyridoxal 5'-phosphate and malate dehydrogenase appears to involve reversible formation of a Schiff base with the epsilon-amino group of a lysine residue. 4. Inactivation of malate dehydrogenase by pyridoxal 5'-phosphate at 10 degrees C involves only the reversible reaction. 5. At 10 degrees C repeated cycles of treatment with pyridoxal 5'-phosphate and NaBH4 reduction lead to a stepwise decline in residual activity. 6. Apparent Km values for malate and NAD+ are unaltered in the partially inactivated enzyme. 7. NAD+ and NADH give only partial protection against pyridoxal 5'-phosphate inactivation. Substrates give no effect.
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Chen S, Engel PC. Equilibrium protection studies of the interaction of bovine glutamate dehydrogenase with purine nucleotide effectors. FEBS Lett 1975; 58:202-6. [PMID: 5298 DOI: 10.1016/0014-5793(75)80259-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Borri Voltattorni C, Orlacchio A. Alpha5 pyridoxalacetic acid and alpha5 pyridoxyl-L-phenylalanine acetic acid: their action on some B6-dependent enzymes. Experientia 1975; 31:1017-9. [PMID: 240735 DOI: 10.1007/bf02326932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Bukin IV, Matveeva AA. [Induction and inhibition of mouse and rat liver tyrosine transaminase by vitamin b6 antagonists and inhibitors of pyridoxalic enzymes]. Biokhimiia 1974; 39:1146-56. [PMID: 4156648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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De la Mora MP, Tapia R. Anticonvulsant effect of 5-ethyl,5-phenyl,2-pyrrolidinone and its possible relationship to gamma-aminobutyric acid-dependent inhibitory mechanisms. Biochem Pharmacol 1973; 22:2635-9. [PMID: 4147958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Pérez de la Mora M, Tapia R. Anticonvulsant effect of 5-ethyl, 5-phenyl, 2-pyrrolidinone and its possible relationship to gamma-aminobutyric acid-dependent inhibitory mechanisms. Biochem Pharmacol 1973; 22:2635-9. [PMID: 4763599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Abstract
1. In adrenalectomized fasted rats transection of the spinal cord at C7-C8 or placement of bilateral electrolytic lesions in the lateral hypothalamus when performed in the morning interrupted the daily rhythm of hepatic tyrosine transaminase by elevating low (AM) enzyme activities to high (PM) levels; lesions placed in PM did not affect the late afternoon rise in enzyme activity.2. Bilateral thalamic lesions had no affect on enzyme activity.3. The activity of hepatic catechol-O-methyl transferase was unaffected by hypothalamic lesions.4. The lesion-evoked rise of tyrosine transaminase activity was abolished by exogenously administered norepinephrine.5. Cycloheximide blocked the rise of tyrosine transaminase activity caused by hypothalamic lesions.6. The results suggest that rhythmic activity of sympathetic nerves governed by lateral hypothalamus contribute to regulation of the daily rhythm in tyrosine transaminase by regulating the release of norepinephrine peripherally; norepinephrine may block the daily rise of enzyme by interfering with protein synthesis, possibly of new enzyme, by competing with pyridoxal co-factor.7. It is proposed that alternating activity of sympathetic-adrenergic and vagal-cholinergic nerves to liver, controlled by the C.N.S., contribute to rhythmic activity of hepatic tyrosine transaminase.
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Maddaiah VT, Chen SY, Rezvani I, Sharma R, Collipp PJ. Inactivation of microsomal glucose-6-phosphatase by pyridoxal-5'-phosphate. Biochem Biophys Res Commun 1971; 43:114-8. [PMID: 4325492 DOI: 10.1016/s0006-291x(71)80094-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hullar TL, French WC. Pyridoxal phosphate. 3. Pyrimidine analogs. 3-(Substituted 5-pyrimidyl)propionic acids as potential inhibitory analogs of pyridoxal phosphate. J Med Chem 1969; 12:424-6. [PMID: 5788158 DOI: 10.1021/jm00303a019] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Hullar TL, Failla DL. Pyridoxal phosphate. II. Benzene analogs. 2-Formylphenoxyacetic acids as potential antimetabolites of pyridoxal phosphate. J Med Chem 1969; 12:420-4. [PMID: 5788157 DOI: 10.1021/jm00303a018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Khomutov RM, Severin ES, Khurs EN, Gulyaev NN. Phosphorylation of threonine residue in apo-aspartate aminotransferase during the inhibition with N-(pyridoxyl-5'-phosphate)-L-glutamic acid. Biochim Biophys Acta 1969; 171:201-2. [PMID: 5763407 DOI: 10.1016/0005-2744(69)90123-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Noguchi S. Physiological significance of carnosine, anserine and related compounds in muscle contraction. 3. Interaction between beta-alanyl dipeptides and vitamin B6 group in smooth muscle contraction. Wakayama Med Rep 1967; 12:37-42. [PMID: 6063932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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