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PMID |
Sentence |
1 |
2822032
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Adipocytes were isolated from epididymal white fat and interscapular brown fat of male rats, and activities of 5'-nucleotidase, adenosine deaminase and adenosine kinase were measured in cell extracts. 2. 5'-Nucleotidase activity in white adipocytes was increased in streptozotocin-diabetes, decreased in hypothyroidism and increased with age.
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2 |
7857678
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The adenosine analogue formycin A is phosphorylated to its triphosphate ester in a sequence of reactions catalyzed by adenosine kinase and adenylate kinase.
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3 |
12190116
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Insulin restores expression of adenosine kinase in streptozotocin-induced diabetes mellitus rats.
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4 |
12190116
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During the first 7 h after insulin treatment the level of adenosine kinase mRNA, protein and enzymatic activity in kidneys, liver and heart returned to normal values.
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5 |
12190116
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The observed relation between insulin and adenosine kinase expression level may suggest that insulin increases the rate of adenosine kinase gene transcription.
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6 |
12190116
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Insulin restores expression of adenosine kinase in streptozotocin-induced diabetes mellitus rats.
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7 |
12190116
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During the first 7 h after insulin treatment the level of adenosine kinase mRNA, protein and enzymatic activity in kidneys, liver and heart returned to normal values.
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8 |
12190116
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The observed relation between insulin and adenosine kinase expression level may suggest that insulin increases the rate of adenosine kinase gene transcription.
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9 |
12190116
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Insulin restores expression of adenosine kinase in streptozotocin-induced diabetes mellitus rats.
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10 |
12190116
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During the first 7 h after insulin treatment the level of adenosine kinase mRNA, protein and enzymatic activity in kidneys, liver and heart returned to normal values.
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11 |
12190116
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The observed relation between insulin and adenosine kinase expression level may suggest that insulin increases the rate of adenosine kinase gene transcription.
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12 |
12729803
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Insulin induces expression of adenosine kinase gene in rat lymphocytes by signaling through the mitogen-activated protein kinase pathway.
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13 |
12729803
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Exposure of rat lymphocytes to wortmannin, an inhibitor of phosphatidylinositol 3-kinase (PI3K), or rapamycin, an inhibitor of mTOR, did not affect the ability of insulin to stimulate expression of AK.
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14 |
12729803
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Prior treatment of the cells with 10 microM PD98059, an inhibitor of mitogen-activated protein kinase (MAPK) kinase (MEK) completely blocked insulin-stimulated expression of AK gene.
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15 |
12729803
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Insulin produced a significant transient increase in the tyrosine phosphorylation of ERK1/2, and PD98059 inhibited this phosphorylation.
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16 |
12729803
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Furthermore exposure of cells to insulin has resulted in transient phosphorylation of Elk-1 on Ser-383 and sustained elevation of c-Jun and c-Fos protein.
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17 |
12729803
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This includes activation of the MAPK cascade and subsequent phosphorylation of Elk-1 followed by increased expression of c-fos and c-jun genes.
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18 |
16103269
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Platelet-derived growth factor (PDGF)-BB (25 ng/mL) increased DNA synthesis ([3H]thymidine incorporation), cellular proliferation (cell number), collagen synthesis ([3H]proline incorporation), and mitogen-activated protein kinase (MAPK) activity, and these effects were attenuated by 2-chloroadenosine (nonselective AR agonist) and 5'-N-methylcarboxamidoadenosine (MECA; nonselective AR agonist), but not by N6-cyclopentyladenosine (selective A1 AR agonist), AB-N-MECA (selective A3 AR agonist), or CGS21680 (selective A(2A) AR agonist).
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19 |
16103269
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Antisense, but not sense or scrambled, oligonucleotides to the A(2B) receptor increased both basal and PDGF-induced DNA synthesis, cell proliferation, and collagen synthesis, and the growth-inhibitory effects of 2-chloroadenosine, 5'-N-MECA, and erythro-9-(2-hydroxy-3-nonyl)adenine (inhibitor of adenosine deaminase) plus iodotubercidin (inhibitor of adenosine kinase) were abolished by antisense, but not scrambled or sense, oligonucleotides to the A(2B) receptor.
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20 |
16173046
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Inhibition of adenosine kinase (AK) with 5-iodotubercidin lowers the proliferation potential of T cells to the level observed for insulin-deprived cells.
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21 |
16827901
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T cells cultured at high glucose concentrations in the absence of insulin displayed decreased expression of adenosine kinase, and released measurable extracellular quantities of adenosine.
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22 |
19738938
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The activity of adenosine deaminase in the cytosolic fraction was very low and was not affected by different glucose concentration, but in the membrane fraction of cells cultured with 25 mM glucose it was decreased by about 35% comparing to the activity in cells maintained in 5 mM glucose, irrespective of insulin concentration.
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23 |
19738938
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Neither insulin nor glucose had an effect on adenosine kinase (AK) activity in SKW 6.4 cells or in human B cells isolated from peripheral blood.
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24 |
23685153
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Extracellular concentrations of adenosine are regulated by the interplay of equiliberative nucleoside transporter (ENT)s with enzymes of adenosine metabolism including adenosine deaminase-1 (ADA1), adenosine kinase (AK) and CD73.
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25 |
23840723
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In this study, we used primary mixed cultures of rat retinal cells exposed to high glucose conditions, to mimic hyperglycemia, and a streptozotocin rat model of type 1 diabetes to determine the effect diabetes/hyperglycemia have on the expression and protein levels of adenosine receptors and of the enzymes adenosine deaminase and adenosine kinase.
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26 |
23840723
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Adenosine deaminase and adenosine kinase expression and protein levels showed a significant decrease in diabetic retinas 30 days after diabetes induction.
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27 |
23840723
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In this study, we used primary mixed cultures of rat retinal cells exposed to high glucose conditions, to mimic hyperglycemia, and a streptozotocin rat model of type 1 diabetes to determine the effect diabetes/hyperglycemia have on the expression and protein levels of adenosine receptors and of the enzymes adenosine deaminase and adenosine kinase.
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28 |
23840723
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Adenosine deaminase and adenosine kinase expression and protein levels showed a significant decrease in diabetic retinas 30 days after diabetes induction.
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29 |
12488539
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Evidence that the time course of insulin-induced changes in adenosine level in diabetic rats is different from that observed for expression of adenosine kinase prompted us to study the insulin effect on expression of nucleoside transporters in tissues of diabetic rats.
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30 |
12488539
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Administration of insulin to diabetic rats resulted in a drop in adenosine concentration in examined tissues and return of the rCNT1, rCNT2, and rENT2 but not rENT1 mRNA levels to values observed in nondiabetic rats.
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