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- Algovik, M, et al.
(författare)
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Genetic influence on dystocia
- 2004
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Ingår i: Acta obstetricia et gynecologica Scandinavica. - : Wiley. - 0001-6349. ; 83:9, s. 832-837
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Tidskriftsartikel (refereegranskat)
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| 6. |
- Algovik, M, et al.
(författare)
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Genetic influence on dystocia
- 2003
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Ingår i: AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY. - : Elsevier BV. - 0002-9378. ; 189:6, s. S113-S113
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Broliden, K, et al.
(författare)
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[Parvovirus B19 infection--an incidious chameleon]
- 2000
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Ingår i: Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke. - 0029-2001. ; 120:4, s. 455-8
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Tidskriftsartikel (refereegranskat)
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- Lindton, B, et al.
(författare)
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In vitro studies of haematopoietic colony-forming capacity of human fetal liver cells at exposure to cytotoxic and immunomodulatory drugs
- 2002
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Ingår i: Fetal diagnosis and therapy. - : S. Karger AG. - 1015-3837 .- 1421-9964. ; 17:2, s. 104-109
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Tidskriftsartikel (refereegranskat)abstract
- <i>Objective:</i> Intrauterine transplantation with haematopoietic stem cells (SC) as a treatment for immunological, haematological and metabolic inherited disorders has not been effective in fetuses with a normal immunological status. Inhibition of the fetal haematopoiesis or immunosuppression might therefore be a therapeutic alternative in fetal SC transplantation. The aim of the present study was to evaluate the effects of drugs that might be considered as therapeutic options in fetal transplantations on the colony-forming capacity of fetal haematopoietic SC. <i>Methods:</i> Fetal liver cells were incubated with doxorubicin, daunorubicin, antithymocyte-globulin (ATG), OKT-3 (Orthoclone) and betamethasone. The effects of these drugs on colony formation by fetal hematopoietic SC were evaluated. Colony-forming capacity assays were cultured during 10 days after drug incubation on day 1 and evaluated for differences in number of colonies compared to unexposed cells. For betamethasone, similar studies were performed with adult bone marrow. <i>Results:</i> A significant reduction in fetal liver haematopoietic colony formation of BFU-E, CFU-GM and CFU- GEMM was detected when 0.1 <i>M</i> doxorubicin (p < 0.05) and 0.5 µ<i>M</i> daunorubicin (p < 0.05) were added. OKT-3 (5 µg/ml) and ATG (4 µg/ml) significantly reduced BFU-E, CFU-GM and CFU-GEMM (p < 0.05). A concentration of 0.2 µg/ml betamethasone caused a significant reduction of BFU-E, CFU-GM and CFU-GEMM (p < 0.05). <i>Conclusions:</i> The drugs investigated in this in vitro study were capable to different degrees to decrease the colony-forming capacity of fetal haematopoietic progenitor cells. Whether this strategy will become an alternative in fetal SC transplantations is an open question and further studies are required to elucidate the potential use of these drugs in fetal transplantation.
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- Lindton, B, et al.
(författare)
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Mixed lymphocyte culture of human fetal liver cells
- 2000
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Ingår i: Fetal diagnosis and therapy. - : S. Karger AG. - 1015-3837 .- 1421-9964. ; 15:2, s. 71-78
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Tidskriftsartikel (refereegranskat)abstract
- <i>Objective:</i> In order to study the immunological function of the human fetus in the first and second trimesters, mixed lymphocyte culture (MLC) of fetal liver and thymic cells was performed. MLC is a functional test to determine human lymphocyte antigen-D incompatibilities. <i>Methods:</i> Human fetal liver and thymic tissue was obtained from abortions in gestational weeks 7–17.5. Forty-seven fetuses were studied with one-way MLC. The cells were stimulated by adding irradiated fetal liver cells, adult bone marrow and peripheral blood lymphocytes. The activity was measured as DNA incorporation of radiolabeled thymidine. <i>Results:</i> The results indicate that the human fetus is competent to react as early as 11–12 weeks of gestation and in some cases even earlier. In very immature fetal livers (< 8 weeks), the MLC seems to be inhibited. <i>Conclusions:</i> Our data suggest that the human fetus can react against foreign transplantation antigens earlier than previous papers have claimed. The onset of reactivity seems to differ considerably among fetuses. The present findings may explain some of the limited success of in utero transplantations of hematopoietic stem cells in human fetuses of normal immunological status.
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| 22. |
- Lindton, B, et al.
(författare)
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Recombinant parvovirus B19 empty capsids inhibit fetal hematopoietic colony formation in vitro
- 2001
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Ingår i: Fetal diagnosis and therapy. - : S. Karger AG. - 1015-3837 .- 1421-9964. ; 16:1, s. 26-31
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Tidskriftsartikel (refereegranskat)abstract
- Erythroid lineage cells are target cells for human parvovirus B19, and a natural infection often results in transient anemia. To determine whether recombinant B19 capsid proteins (VP1/VP2) also inhibit human hematopoietic progenitor growth, a model system was set up. The B19 capsids were inoculated into primary cultures of hematopoietic stem cells derived from human fetal liver, resulting in a 70–95% reduction of BFU-E (burst-forming unit erythroid cells) as compared with the medium control. A similar effect was seen in human hematopoietic stem cell cultures derived from cord blood and adult bone marrow. Preincubation of the B19 capsids with either a monoclonal antibody to the virus or with B19 IgG positive human sera reduced the inhibitory effect. Furthermore, the inhibitory effect could be reduced by preincubating the target cells with a monoclonal antibody to the cellular receptor for the virus, the P antigen. These findings thus show that the inhibition of colony formation of human hematopoietic stem cells can occur in the absence of parvovirus B19 nonstructural proteins. We speculate that B19 capsid could provide a possible strategy to downregulate indigenous hematopoiesis in fetal stem cell transplantations.
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- Westgren, M, et al.
(författare)
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In utero stem cell transplantation in humans
- 2001
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Ingår i: Ernst Schering Research Foundation workshop. - Berlin, Heidelberg : Springer Berlin Heidelberg. - 0947-6075. ; :33, s. 197-221
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Tidskriftsartikel (refereegranskat)
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