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NLM156882795 |
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DE-627 |
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20250206141314.0 |
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231223s2005 xx ||||| 00| ||chi c |
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|a pubmed25n0523.xml
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|a (DE-627)NLM156882795
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|a (NLM)16053731
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a chi
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| 100 |
1 |
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|a Hao, Yi-qun
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Mechanism of inhibitory effect of intravenous immunoglobulin on neonatal umbilical cord blood lymphocytes
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| 264 |
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1 |
|c 2005
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 15.07.2010
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|a Date Revised 16.11.2017
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|a published: Print
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|a Citation Status MEDLINE
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| 520 |
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|a OBJECTIVE: The expression of CD25, CD45RA, CD45RO on umbilical cord blood mononuclear cells (CBMCs) and CD3(+) T lymphocytes was investigated to explore the mechanism of immunosuppressive effects of intravenous immunoglobulin on neonatal immune function
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| 520 |
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|a METHODS: Umbilical cord blood mononuclear cells and CD3(+) T lymphocytes isolated from 8 neonates were studied. The expression of CD25, CD45RA, CD45RO on umbilical cord blood mononuclear cells (CBMCs) and CD3(+) T lymphocytes induced with various stimuli of different combinations of IVIG and phytohemagglutinin (PHA) including (1) control group, (2) PHA activation group, (3) IVIG pre-inhibition group, (4) PHA pre-activation group, (5) PHA+IVIG group was measured with four-color immunofluorescence antibodies staining-flow cytometric technique. The results were also compared with peripheral blood mononuclear cells of 8 adults (PBMCs)
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| 520 |
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|a RESULTS: IVIG inhibited the PHA-induced proliferation of CBMCs as reflected by the decreased expression of CD25 and CD45RO. The amounts of CD25(+) and CD4(+)CD45RO(+) CBMCs reached 77.52% +/- 2.31% and 64.29% +/- 3.09% after PHA use. But a decreased response in CD25(+) (7.66% +/- 1.20% and 7.78% +/- 1.46%) and CD4(+)CD45RO(+) CBMC (3.18% +/- 1.90% and 3.11% +/- 0.08%) was observed when IVIG was added in both IVIG pre-inhibition group and PHA+IVIG group. As compared with PBMCs, IVIG failed to induce the increase of the expression of CD45RA in CBMCs whereas CD45RA(+) PBMCs increased from 54.93% +/- 3.63% to 72.77% +/- 0.39% in IVIG pre-inhibition group. Moreover, IVIG inhibited the expression of CD25 and CD45RO on cord blood CD3(+) T lymphocytes no matter whether they were activated with PHA or not. The amounts of CD25(+) and CD4(+)CD45RO(+) CD3(+) T lymphocytes reached 97.92% +/- 2.19% and 80.41% +/- 5.57% after PHA use. But a decreased response in CD25(+) CBMCs (77.29% +/- 0.63%, 51.48% +/- 1.85% and 62.73% +/- 1.24%) and CD4(+)CD45RO(+) CD3(+) T lymphocytes (35.47% +/- 2.55%, 40.14% +/- 1.16% and 36.41% +/- 2.96%) was observed when IVIG was added in IVIG pre-inhibition group, PHA pre-activation group and PHA+IVIG group, and the degree of inhibition of IVIG on cord blood CD3(+) T lymphocytes was much lower than that of CBMCs
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| 520 |
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|a CONCLUSIONS: Cord blood T lymphocytes activation was inhibited by IVIG through the inhibition of CD25(+) CBMCs expression and the prevention of transformation from CD4(+)CD45RA(+) cells into CD4(+)CD45RO(+) cells. This IVIG-mediated suppression of activation in cord blood T cells may be derived from the indirect effect of other immune cells or molecules other than the direct effects on T cells. IVIG failed to induce the increase of expression of CD45RA in CBMCs, which may be related to the fact that majority of CBMCs were CD45RA(+) cells, but this may not rule out that the immunosuppressive effect of IVIG could be accomplished by the increase of CD45RA(+) cells in adult peripheral blood mononuclear cells. The suppressive effect of IVIG on CD4(+)CD45RO(+) T lymphocytes may account for its inhibitory effect on immunoglobulin production of neonates' B cells. Considering that naïve CD45RA(+) cells dominate in neonates and IVIG can inhibit transformation from CD4(+)CD45RA(+) cells into CD4(+)CD45RO(+) cells, it is recommended that IVIG should be used properly in neonates, otherwise it may deteriorate their poor immune function especially when it is used for prophylaxis or as a treatment of neonatal non-infectious diseases, and its immunosuppressive action will increase the susceptibility of neonates to infection
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| 650 |
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4 |
|a Comparative Study
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| 650 |
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4 |
|a Journal Article
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| 650 |
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7 |
|a CD3 Complex
|2 NLM
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| 650 |
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7 |
|a Immunoglobulins, Intravenous
|2 NLM
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| 650 |
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7 |
|a Immunologic Factors
|2 NLM
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| 650 |
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7 |
|a Immunosuppressive Agents
|2 NLM
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| 650 |
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7 |
|a Interleukin-2 Receptor alpha Subunit
|2 NLM
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| 650 |
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7 |
|a Leukocyte Common Antigens
|2 NLM
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| 650 |
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7 |
|a EC 3.1.3.48
|2 NLM
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| 700 |
1 |
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|a Chen, Tong-xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Ya-zhong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Qing-sheng
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Zhonghua er ke za zhi = Chinese journal of pediatrics
|d 1960
|g 43(2005), 6 vom: 31. Juni, Seite 438-43
|w (DE-627)NLM136249191
|x 0578-1310
|7 nnas
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| 773 |
1 |
8 |
|g volume:43
|g year:2005
|g number:6
|g day:31
|g month:06
|g pages:438-43
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| 912 |
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|a GBV_USEFLAG_A
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| 912 |
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|a SYSFLAG_A
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| 912 |
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|a GBV_NLM
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| 912 |
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|a GBV_ILN_11
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| 912 |
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|a GBV_ILN_20
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| 912 |
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|a GBV_ILN_22
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| 912 |
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|a GBV_ILN_24
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| 912 |
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|a GBV_ILN_31
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| 912 |
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|a GBV_ILN_39
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| 912 |
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|a GBV_ILN_40
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| 912 |
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|a GBV_ILN_50
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| 912 |
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|a GBV_ILN_61
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| 912 |
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|a GBV_ILN_65
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| 912 |
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|a GBV_ILN_69
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| 912 |
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|a GBV_ILN_70
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| 912 |
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|a GBV_ILN_72
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| 912 |
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|a GBV_ILN_120
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| 912 |
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|a GBV_ILN_130
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| 912 |
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|a GBV_ILN_227
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| 912 |
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|a GBV_ILN_244
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| 912 |
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|a GBV_ILN_285
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| 912 |
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|a GBV_ILN_294
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| 912 |
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|a GBV_ILN_350
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| 912 |
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|a GBV_ILN_665
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| 912 |
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|a GBV_ILN_813
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| 912 |
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|a GBV_ILN_1121
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| 951 |
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|a AR
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| 952 |
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|d 43
|j 2005
|e 6
|b 31
|c 06
|h 438-43
|