Thymopoiesis following chronic blockade of beta-adrenoceptors
Само за регистроване кориснике
2003
Аутори
Rauški, AleksandraKosec, Duško
Vidić-Danković, Biljana
Radojević, Katarina
Plećaš-Solarović, Bosiljka
Leposavić, Gordana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The present study was undertaken in order to further clarify putative role of the adrenergic innervation in the regulation of the intrathymic T-cell maturation. For this purpose adult male DA rats were subjected to either 4-day- or 16-day-long propranolol treatment (0.40 mg propranolol/100 g/day, s.c.) and the expression of CD4/8/TCRalphabeta on thymocytes, as well as thymocyte proliferative and apoptotic index, was assessed in these animals by flow cytometric analysis. Propranolol treatment, in spite of duration, increased both the thymocyte proliferative and apoptotic index (vs. respective vehicle-treated controls). In 4-day-treated animals the thymus cellularity and thymus weight remained unaltered, while in 16-day-treated rats the values of both of these parameters were reduced (since increase in the thymocyte apoptotic index overcame that in the proliferative index). The treatments of both durations affected the thymocyte phenotypic profile in a similar pattern, but the changes we...re more pronounced in rats exposed to the treatment of longer duration. The relative proportion of the least mature CD4-8- double negative (DN) TCRalphabeta(-) cells was increased, those of thymocytes at distinct differentiational stages on the transitional route to the CD4+8+ double positive (DP) TCRalphabeta(low) stage decreased (all subsets of TCRalphabeta(-) in both groups of rats, and those. with low expression of TCRalphabeta in rats subjected to 16-day-long treatment) or unaltered (all subsets of TCRalphabeta(low) cells in 4-day-treated rats). Furthermore, the percentage of CD4+8+ DP TCRalphabeta(low) cells was significantly elevated, as well as those of the most mature CD4+8-TCRalphabeta(high) and CD4-8+TCRalphabeta(high) cells (the increase in the percentage of former was much more conspicuous than that of the latter), while the relative proportion of their direct detectable precursors (CD4+8+ DP TCRalphabeta(high)) Was reduced. Thus, the present study: i) further supports notion of pharmacological manipulation of adrenergic action as an efficient means in modulation of the T-cell development, and hence T-cell-dependent immune response, and ii) provides more specific insight into T-cell maturation sequence point/s particularly sensitive to beta-adrenoceptor ligand action.
Кључне речи:
chronic propranolol treatment / thymocyte apoptosis / thymocyte proliferation / thymocyte differentiationИзвор:
Immunopharmacology and Immunotoxicology, 2003, 25, 4, 513-528Издавач:
- Taylor & Francis Ltd, Abingdon
DOI: 10.1081/IPH-120026437
ISSN: 0892-3973
PubMed: 14686794
WoS: 000187161100003
Scopus: 2-s2.0-0345599079
Институција/група
TorlakTY - JOUR AU - Rauški, Aleksandra AU - Kosec, Duško AU - Vidić-Danković, Biljana AU - Radojević, Katarina AU - Plećaš-Solarović, Bosiljka AU - Leposavić, Gordana PY - 2003 UR - http://intor.torlakinstitut.com/handle/123456789/161 AB - The present study was undertaken in order to further clarify putative role of the adrenergic innervation in the regulation of the intrathymic T-cell maturation. For this purpose adult male DA rats were subjected to either 4-day- or 16-day-long propranolol treatment (0.40 mg propranolol/100 g/day, s.c.) and the expression of CD4/8/TCRalphabeta on thymocytes, as well as thymocyte proliferative and apoptotic index, was assessed in these animals by flow cytometric analysis. Propranolol treatment, in spite of duration, increased both the thymocyte proliferative and apoptotic index (vs. respective vehicle-treated controls). In 4-day-treated animals the thymus cellularity and thymus weight remained unaltered, while in 16-day-treated rats the values of both of these parameters were reduced (since increase in the thymocyte apoptotic index overcame that in the proliferative index). The treatments of both durations affected the thymocyte phenotypic profile in a similar pattern, but the changes were more pronounced in rats exposed to the treatment of longer duration. The relative proportion of the least mature CD4-8- double negative (DN) TCRalphabeta(-) cells was increased, those of thymocytes at distinct differentiational stages on the transitional route to the CD4+8+ double positive (DP) TCRalphabeta(low) stage decreased (all subsets of TCRalphabeta(-) in both groups of rats, and those. with low expression of TCRalphabeta in rats subjected to 16-day-long treatment) or unaltered (all subsets of TCRalphabeta(low) cells in 4-day-treated rats). Furthermore, the percentage of CD4+8+ DP TCRalphabeta(low) cells was significantly elevated, as well as those of the most mature CD4+8-TCRalphabeta(high) and CD4-8+TCRalphabeta(high) cells (the increase in the percentage of former was much more conspicuous than that of the latter), while the relative proportion of their direct detectable precursors (CD4+8+ DP TCRalphabeta(high)) Was reduced. Thus, the present study: i) further supports notion of pharmacological manipulation of adrenergic action as an efficient means in modulation of the T-cell development, and hence T-cell-dependent immune response, and ii) provides more specific insight into T-cell maturation sequence point/s particularly sensitive to beta-adrenoceptor ligand action. PB - Taylor & Francis Ltd, Abingdon T2 - Immunopharmacology and Immunotoxicology T1 - Thymopoiesis following chronic blockade of beta-adrenoceptors EP - 528 IS - 4 SP - 513 VL - 25 DO - 10.1081/IPH-120026437 ER -
@article{ author = "Rauški, Aleksandra and Kosec, Duško and Vidić-Danković, Biljana and Radojević, Katarina and Plećaš-Solarović, Bosiljka and Leposavić, Gordana", year = "2003", abstract = "The present study was undertaken in order to further clarify putative role of the adrenergic innervation in the regulation of the intrathymic T-cell maturation. For this purpose adult male DA rats were subjected to either 4-day- or 16-day-long propranolol treatment (0.40 mg propranolol/100 g/day, s.c.) and the expression of CD4/8/TCRalphabeta on thymocytes, as well as thymocyte proliferative and apoptotic index, was assessed in these animals by flow cytometric analysis. Propranolol treatment, in spite of duration, increased both the thymocyte proliferative and apoptotic index (vs. respective vehicle-treated controls). In 4-day-treated animals the thymus cellularity and thymus weight remained unaltered, while in 16-day-treated rats the values of both of these parameters were reduced (since increase in the thymocyte apoptotic index overcame that in the proliferative index). The treatments of both durations affected the thymocyte phenotypic profile in a similar pattern, but the changes were more pronounced in rats exposed to the treatment of longer duration. The relative proportion of the least mature CD4-8- double negative (DN) TCRalphabeta(-) cells was increased, those of thymocytes at distinct differentiational stages on the transitional route to the CD4+8+ double positive (DP) TCRalphabeta(low) stage decreased (all subsets of TCRalphabeta(-) in both groups of rats, and those. with low expression of TCRalphabeta in rats subjected to 16-day-long treatment) or unaltered (all subsets of TCRalphabeta(low) cells in 4-day-treated rats). Furthermore, the percentage of CD4+8+ DP TCRalphabeta(low) cells was significantly elevated, as well as those of the most mature CD4+8-TCRalphabeta(high) and CD4-8+TCRalphabeta(high) cells (the increase in the percentage of former was much more conspicuous than that of the latter), while the relative proportion of their direct detectable precursors (CD4+8+ DP TCRalphabeta(high)) Was reduced. Thus, the present study: i) further supports notion of pharmacological manipulation of adrenergic action as an efficient means in modulation of the T-cell development, and hence T-cell-dependent immune response, and ii) provides more specific insight into T-cell maturation sequence point/s particularly sensitive to beta-adrenoceptor ligand action.", publisher = "Taylor & Francis Ltd, Abingdon", journal = "Immunopharmacology and Immunotoxicology", title = "Thymopoiesis following chronic blockade of beta-adrenoceptors", pages = "528-513", number = "4", volume = "25", doi = "10.1081/IPH-120026437" }
Rauški, A., Kosec, D., Vidić-Danković, B., Radojević, K., Plećaš-Solarović, B.,& Leposavić, G.. (2003). Thymopoiesis following chronic blockade of beta-adrenoceptors. in Immunopharmacology and Immunotoxicology Taylor & Francis Ltd, Abingdon., 25(4), 513-528. https://doi.org/10.1081/IPH-120026437
Rauški A, Kosec D, Vidić-Danković B, Radojević K, Plećaš-Solarović B, Leposavić G. Thymopoiesis following chronic blockade of beta-adrenoceptors. in Immunopharmacology and Immunotoxicology. 2003;25(4):513-528. doi:10.1081/IPH-120026437 .
Rauški, Aleksandra, Kosec, Duško, Vidić-Danković, Biljana, Radojević, Katarina, Plećaš-Solarović, Bosiljka, Leposavić, Gordana, "Thymopoiesis following chronic blockade of beta-adrenoceptors" in Immunopharmacology and Immunotoxicology, 25, no. 4 (2003):513-528, https://doi.org/10.1081/IPH-120026437 . .