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T Teshima

Publications and source records attributed to T Teshima.

At least 37 records · Page 2Linked to original sources
PubMed2000

Developmental changes in localization of the main ganglioside during sea urchin embryogenesis.

Ganglioside M5 (NeuGcalpha2-6Glcbeta1-1'Cer), the main ganglioside in sea urchin and sand dollar eggs, exists mainly in the endoplasmic reticulum and yolk granules in unfertilized eggs. To study the localization of ganglioside M5 after fertilization, early embryos were stained with an anti-ganglioside M5 monoclonal antibody. Using immunofluorescent and immunoelectron microscopy, intense label was observed in the outer surface and cytoplasm of embryos. These results indicate that ganglioside M5 was secreted during embryogenesis and localized in the extracellular matrix (ECM). When living embryos were incubated in sea water containing 7-nitrobenz-2-oxa-1,3-diazole labeled-ganglioside M5 (NBD-M5), the ECM and plasma membrane were strongly stained. Since the localization of NBD-M5 in the ECM was similar to that of extracellular M5, NBD-M5 was likely to be useful to examine the fate of extracellular ganglioside M5. Interestingly, NBD-M5 was incorporated in subcortical vesicles during embryogenesis, suggesting that the extracellular ganglioside M5 is transported into the cytoplasm. When fertilized eggs were incubated with NBD-M5 and tetramethylrhodamine dextran (a marker dye for endocytotic vesicles), colocalization of the dyes was observed in the vesicles. Thus, it was concluded that NBD-M5 in the ECM and/or plasma membrane was internalized in the cells by endocytosis, suggesting that extracellular M5 is transported from the ECM to endocytotic vesicles.

Animals↗
PubMed2000

Reactivation of human herpesviruses after allogeneic peripheral blood stem cell transplantation and bone marrow transplantation.

Reactivation of latent herpesviruses results in outcomes ranging from asymptomatic shedding of viruses to severe diseases, depending on the immunological competence of the host. Severe and prolonged suppression of cellular and humoral immunity after hematopoietic stem cell transplantation is accompanied by a high incidence of symptomatic recurrent herpesvirus infections. Subclinical reactivation also occurs more frequently than previously expected in transplant recipients. An increasing viral load in the blood detected by an antigenemia assay or PCR and viral shedding in regional fluids have a predictive value for subsequent diseases. Monitoring of viral DNA in the peripheral blood after allogeneic bone marrow transplantation (allo-BMT) reveals unique temporal profiles of detection for each herpesvirus. Recent studies demonstrate that recovery of CD4+ T cells is enhanced within one month after allogeneic peripheral blood stem cell transplantation (allo-PBSCT) compared to allo-BMT. To clarify whether this immunological advantage could affect the reactivation of human herpesvirus (HHV), we monitored the emergence of viral DNA by a nested-double polymerase chain reaction in peripheral blood leukocytes. Detection rates of HHV-6 DNAs which peak at 3-4 weeks post-transplant, were significantly reduced after allo-PBSCT compared to allo-BMT, while those of other herpesviruses which tend to be reactivated later than this period (Epstein-Barr virus and cytomegalovirus) were similar between the two types of transplants. Detection of HHV-6 DNA within the first month after the transplant was associated with delayed platelet engraftment. These results underscore the important role of CD4+ T reconstitution in inhibiting virus reactivation post-transplant.

Bone Marrow Transplantation↗
PubMed2000

[Assessment of noninvasive therapy in lung cancer using lung perfusion images].

The purpose of this prospective study was to follow the changes in functional parameters of radionuclide lung perfusion scans and their role in prognostication of lung cancer cases after noninvasive therapy. We studied 91 patients of lung cancer treated with chemotherapy and/or radiotherapy during 1993 to 1997 in our hospital. Lung perfusion scans were acquired pre and post-therapy. An index of lung perfusion, called Improvement Ratio (IR) was defined as a change in the perfusion of diseased lung as a result of treatment. IR was calculated by the following equation under the assumption that perfusion of contralateral lung remained unaffected. [formula: see text] where Q and Q' are pulmonary arterial blood flow pre and post therapy respectively, p is perfusion ratio of diseased lung before therapy and q is that after therapy. We further studied the relationship between IR and change in tumor size. The influence of tumor location, histopathological diagnosis and prognosis of lung cancer were correlated with this newly defined index. IR in the group of patients with complete response or partial response was significantly higher than in those with poor response (2.72 +/- 0.78 versus 0.99 +/- 0.09, p < 0.05). There was no statistical difference between the group with and without radiotherapy. The score was significantly higher for patients with hilar disease compared to those with peripheral lesions (2.80 +/- 0.83 versus 1.02 +/- 0.03, p < 0.05). Similarly, patients with small cell lung cancer depicted higher values of IR than non-small cell lung cancer (3.36 +/- 1.10 versus 1.06 +/- 0.07, p < 0.05). All those subjects who showed IR > 1 had longer survival time than those with IR < 1 (p < 0.05). It is suggested that improvement in the perfusion of diseased lung predicted better prognosis. We conclude that the evaluation of physiological parameters during therapy using lung perfusion scanning, in addition to lesion size assessment will contribute to the comprehensive follow-up of lung cancer.

Adult↗
PubMed2000

[Clinical quality assurance at institutions according to a patterns of care study. Japanese PCS Working Group].

The clinical quality assurance (QA) of an institution is important in any multiinstitutional prospective study. Patterns of Care Study (PCS) is a well-known study for QA activity in the United States. PCS is a nationwide retrospective study done by two-staged cluster sampling of institutions and patients and external audits. After data are accumulated, National averages on various survey items are calculated as a QA measure. In 1996, PCS was imported into the radiation oncology field in Japan with the support of the Ministry of Health and Welfare. Preliminary results showed significant differences in treatment process, structure, and preliminary outcome according to the stratification of institutions. These data can be useful in improving the structure and process at the institutional as well as the national level. PCS will also clarify the dissemination of positive clinical results into national practice.

Esophageal Neoplasms↗
PubMed2000

[A case of colonic cancer with multiple liver metastases effectively treated by intra-arterial chemotherapy].

A 36-year-old female underwent sigmoidectomy and insertion of an intra-hepatic arterial catheter for advanced sigmoid cancer with multiple liver metastases. After the operation, intra-hepatic arterial infusion of the chemotherapeutic agents that showed sensitivity in the histoculture drug response assay (HDRA) to the liver metastasis was done for one year. The metastatic liver lesions other than those in the lateral segment which were fed by an accessory artery decreased remarkably. Therefore, we performed lateral segmentectomy. The patient has been doing well without recurrence for 18 months after the first operation. Intra-hepatic arterial infusion chemotherapy for liver metastasis from colorectal cancer can produce an excellent result with the use of sensitive chemotherapeutic agents.

Adenocarcinoma↗
PubMed2000

Allogeneic peripheral blood stem cell transplantation in 23 adult patients with hematologic malignancies: a single-center experience.

We describe a single-center experience of 23 consecutive patients (median age, 35 years) with hematologic malignancies who received allogeneic peripheral blood stem cell transplants (alloPBSCTs) from HLA-identical siblings. Ten patients had standard-risk disease and 13 had high-risk disease. Twenty-one patients received alloPBSCT as a primary transplant, and the remaining 2, with high-risk disease, as a second transplant after posttransplantation relapse. All donors received daily subcutaneous injections of granulocyte colony-stimulating factor at a dose of 10 microg/kg, and peripheral blood stem cells were collected by 1 to 3 aphereses. Median numbers of CD34+ and CD3+ cells infused were 5.8 x 10(6)/kg (range, 1.3-19.7 x 10(6)/kg) and 4.9 x 10(8)/kg (range, 1.9-8.6 x 10(8)/kg), respectively. Graft-versus-host disease (GVHD) prophylaxis consisted of cyclosporin A (CyA) and methotrexate (18 patients) or CyA and methylprednisolone (5 patients). Rapid hematologic engraftment was observed in 20 of the 23 patients. Median days to absolute neutrophil counts >0.5 x 10(9)/L and platelet counts >20 x 10(9)/L were 12 (range, 9-18 days) and 14 (range, 10-128 days), respectively. Acute GVHD of grade 2-4 was observed in 6 of 20 evaluable patients (30%) and extensive chronic GVHD in 8 of 15 evaluable patients (53%). Ten of the 23 patients (44%) were surviving in continuous complete remission 191 to 1492 days (median, 643 days) posttransplantation. Treatment-related death within 100 days posttransplantation was observed in 6 of the 23 patients (26%). Six of the 23 patients (26%) developed relapse at a median 81 days (range, 38-160 days) posttransplantation. Further study is needed to assess the precise benefits of alloPB-SCT compared with allogeneic bone marrow transplantation.

Adolescent↗
PubMed2000

[Regional assessment of treatment in lung cancer using lung perfusion and ventilation images].

In 30 patients with lung cancer undergoing non-surgical treatment, we performed perfusion lung imaging using 99mTc-MAA and inhalation lung studies using Technegas before and after treatment and evaluated regional perfusion and ventilation status in the lung regions where bronchogenic carcinoma was located. Regional ventilation status was preserved rather than perfusion counterpart (V > P) in 18 patients (18/30 = 60.0%) before treatment, while the former was better than the latter in 27 patients (27/30 = 90.0%) after treatment, indicating that regional ventilation status improved more significantly than regional perfusion counterpart after treatment (p = 0.005). We also classified the therapeutic effect for regional perfusion and ventilation status as improved, unchanged, or worsened, respectively; improvement in regional perfusion status was observed in 17 patients (56.7%) and that in regional ventilation status in 24 patients (80.0%). There was a statistically significant correlation between improved regional perfusion and ventilation status (p = 0.0018) when therapeutic effect was recognized. The patients who showed improvement in regional perfusion status after treatment always showed improved regional ventilation status, but 7 patients showed either unchanged or worsened regional perfusion status after treatment, although regional ventilation status was improved. In conclusion the pulmonary vascular beds seem more vulnerable to bronchogenic carcinoma and improvement in regional perfusion status was revealed to be more difficult than that in regional ventilation status after treatment.

Adult↗
PubMed1999

Keratinocyte growth factor separates graft-versus-leukemia effects from graft-versus-host disease.

The major obstacles to successful outcome after allogeneic bone marrow transplantation (BMT) for leukemia remain graft-versus-host disease (GVHD) and leukemic relapse. Improved survival after BMT therefore requires more effective GVHD prophylaxis that does not impair graft-versus-leukemia (GVL) effects. We studied the administration of human recombinant keratinocyte growth factor (KGF) in a well- characterized murine BMT model for its effects on GVHD. KGF administration from day -3 to +7 significantly reduced GVHD mortality and the severity of GVHD in the gastrointestinal (GI) tract, reducing serum lipopolysaccharide (LPS) and tumor necrosis factor (TNF)alpha levels, but preserving donor T-cell responses (cytotoxic T lymphocyte [CTL] activity, proliferation, and interleukin [IL]-2 production) to host antigens. When mice received lethal doses of P815 leukemia cells at the time of BMT, KGF treatment significantly decreased acute GVHD compared with control-treated allogeneic mice and resulted in a significantly improved leukemia-free survival (42% v 4%, P <.001). KGF administration thus offers a novel approach to the separation of GVL effects from GVHD.

Animals↗
PubMed1999

Granulocyte colony-stimulating factor-mobilized allogeneic stem cell transplantation maintains graft-versus-leukemia effects through a perforin-dependent pathway while preventing graft-versus-host disease.

Minimization of graft-versus-host disease (GVHD) with preservation of the graft-versus-leukemia (GVL) effect is a crucial step to improve the overall survival of allogeneic bone marrow transplantation (BMT) for patients with hematological malignancies. We and other investigators have shown that granulocyte colony-stimulating factor (G-CSF)-mobilized allogeneic peripheral stem cell transplantation (PBSCT) reduces the severity of acute GVHD in murine models. In this study, we investigated whether G-CSF-mobilized PBSC maintain their GVL effect in a murine allogeneic transplant model (B6 --> B6D2F1). B6 mice (H-2(b)) were injected subcutaneously with human G-CSF (100 micrograms/kg/d) for 6 days and their splenocytes were harvested on day 7 as a source of PBSC. G-CSF mobilization dramatically improved transplant survival compared with nonmobilized controls (95% v 0%, P <.001). Systemic levels of lipopolysaccharide and tumor necrosis factor-alpha were markedly reduced in recipients of allogeneic G-CSF-mobilized donors, but cytolytic T lymphocyte (CTL) activity against host tumor target cells p815 was retained in those recipients. When leukemia was induced in recipients by coinjection of p815 tumor cells (H-2(d)) at the time of transplantation, all surviving recipients of G-CSF-mobilized B6 donors were leukemia-free at day 70 after transplant, whereas all mice who received T-cell-depleted (TCD) splenocytes from G-CSF-mobilized B6 donors died of leukemia. When splenocytes from G-CSF-mobilized perforin-deficient (pfp-/-) mice were used for transplantation, 90% of recipients died of leukemia, demonstrating that perforin is a crucial pathway mediating GVL effects after G-CSF-mobilized PBSCT. These data illustrate that G-CSF-mobilized allogeneic PBSCT separate GVL from GVHD by preserving perforin-dependent donor CTL activity while reducing systemic inflammation.

Animals↗
PubMed1999

Perioperative fractionated high-dose rate brachytherapy for malignant bone and soft tissue tumors.

PURPOSE: To investigate the viability of perioperative fractionated HDR brachytherapy for malignant bone and soft tissue tumors, analyzing the influence of surgical margin. METHODS AND MATERIALS: From July 1992 through May 1996, 16 lesions of 14 patients with malignant bone and soft tissue tumors (3 liposarcomas, 3 MFHs, 2 malignant schwannomas, 2 chordomas, 1 osteosarcoma, 1 leiomyosarcoma, 1 epithelioid sarcoma, and 1 synovial sarcoma) were treated at the Osaka University Hospital. The patients' ages ranged from 14 to 72 years (median: 39 years). Treatment sites were the pelvis in 6 lesions, the upper limbs in 5, the neck in 4, and a lower limb in 1. The resection margins were classified as intracapsular in 5 lesions, marginal in 5, and wide in 6. Postoperative fractionated HDR brachytherapy was started on the 4th-13th day after surgery (median: 6th day). The total dose was 40-50 Gy/7-10 fr/4-7 day (bid) at 5 or 10 mm from the source. Follow-up periods were between 19 and 46 months (median: 30 months). RESULTS: Local control rates were 75% at 1 year and 48% in 2 years, and ultimate local control was achieved in 8 (50%) of 16 lesions. Of the 8 uncontrolled lesions, 5 (63%) had intracapsular (macroscopically positive) resection margins, and all the 8 controlled lesions (100%) had marginal (microscopically positive) or wide (negative) margins. Of the total, 3 patients died of both tumor and metastasis, 3 of metastasis alone, 1 of tumor alone, and 7 showed no evidence of disease. Peripheral nerve palsy was seen in one case after this procedure, but no infection or delayed wound healing caused by tubing or irradiation has occurred. CONCLUSION: Perioperative fractionated HDR brachytherapy is safe, well tolerated, and applicable to marginal or wide surgical margin cases.

Adolescent↗
PubMed1999

Nasal and nasal-type natural killer/T-cell lymphoma.

Nasal and nasal-type natural killer (NK)/T-cell lymphomas follow an aggressive course and have a poor prognosis. Recent pathologic studies suggest that the disease is a malignant proliferation of NK cells, which often express CD56. An association with the Epstein-Barr virus has also been reported. Skin involvement occurred in each of the 3 patients studied. Radiation therapy provided some benefit to the patients in the early stages. Conventional chemotherapies were not effective. To overcome this multiple-drug resistance of the tumor cells, cyclosporine and high-dose chemotherapy was combined with peripheral-blood stem-cell transplantation. The average life span from the onset of the disease for our patients was 9.6 months. Further improvement in the management of nasal and nasal-type NK/T-cell lymphomas is necessary.

Adult↗
PubMed1999

Hematopoietic progenitor cells from allogeneic bone marrow transplant donors circulate in the very early post-transplant period.

Despite the therapeutic efficacy of allogeneic bone marrow transplantation (allo-BMT), circulating hematopoietic progenitor cells after bone marrow transplantation have not been well characterized. In the present study, we focused on these 'post-transplant circulating progenitor cells (PTCPC)' which may be on their way to bone marrow. We analyzed the number of myeloid progenitor cells (CFU-GM) per 10 ml of peripheral blood (PB) on days 0 (just before transplantation), 1 (8-15 h after the completion of transplantation), 2, 3, 5, 7, 10, 14, 17, 21, 28 and 35 after allo-BMT in five transplant patients using a standard methylcellulose assay. In addition, high proliferative potential colony-forming cells (HPP-CFC) of the harvested donor bone marrow (BM) and day 1 PB of recipients were assayed in five patients. The origin of HPP-CFC from day 1 PB was analyzed by polymerase chain reaction of a DNA region containing a variable number of tandem repeats. The replating potential of these HPP-CFC was evaluated by a secondary colony assay. The proportion of CD38negative cells among CD34+ cells in the harvested BM and day 1 PB was evaluated by two-color flow cytometric analysis. The number of CFU-GM on day 1 ranged from 6 to 73/10 ml PB, and became undetectable on day 5. The reappearance of PTCPC was observed on day 14, along with hematopoietic recovery. The proportion of HPP-CFC among myeloid colonies from day 1 PB was significantly higher than that from harvested BM (44.3+/-10.4% vs 11.3+/-2.1%, respectively, n=5, P=0.0030). These HPP-CFC from day 1 PB were confirmed to be of donor origin. More than 90% of these HPP-CFC had replating potential. Two-color flow cytometric analysis revealed that the proportion of CD34+CD38negative cells was significantly higher in day 1 PB than in the harvested BM (61.0+/-16.5% vs 9.3+/-3.5%, respectively, n=7, P=0.0002). These observations suggest that both primitive and committed transplanted myeloid progenitor cells may circulate in the very early period following allo-BMT.

ADP-ribosyl Cyclase↗
PubMed1999

Multiple autoimmune haemopoietic disorders and insidious clonal proliferation of large granular lymphocytes.

We report a patient with clonal proliferation of CD3+8+TCRalphabeta+ large granular lymphocytes (LGL) presenting multiple episodes of autoimmune cytopenia, including autoimmune neutropenia, idiopathic thrombocytopenic purpura, autoimmune haemolytic anaemia, and pure red cell aplasia. Each disorder appeared separately or as a combination during an 11-year clinical course. The increase of blood CD3+8+TCRalphabeta+ LGL was detected 6 years after the initial diagnosis of cytopenia, but the absolute number of LGL cells was always < 1.0 x 109/l. LGL cells were of monoclonal origin and had a chromosomal abnormality. LGL cells transiently responded to cyclosporine A therapy, which was also effective on all of these autoimmune cytopenias. Accordingly, an undetectable level of proliferation of a clonal LGL population could cause various autoimmune haemopoietic disorders.

Adolescent↗
PubMed1999

National average for the process of radiation therapy in Japan by Patterns of Care Study.

BACKGROUND: A nationwide effort is in progress to establish the actual state of radiotherapy and its quality assurance (QA) in Japan by using the Patterns of Care Study (PCS). In this study, national averages are calculated with a limited number of patients. A calculation program for national averages was prepared and applied to the radiotherapeutic processes used for esophageal cancer patients entered in the PCS. METHODS: The calculation program for national averages, which were revised on the basis of differences between individual facilities and institutional strata, was developed in accordance with Sedransk's equation for the original PCS in the USA. National averages for several aspects concerning the sampled patients who had esophageal cancer between 1992 and 1994 were calculated with these procedures. Data for facilities and stratification of institution were simulated from a national structure survey of radiation oncology in 1990. RESULTS: Values of the national average by Sedransk's equation were different from those of the simple sample average. There were significant differences in radiotherapeutic processes among stratification of institutions. For esophageal cancer, national averages were 0.129 for applications of endoscopic ultrasound, 0.599 for 'all fields treated each day' and 0.088 for application of brachytherapy. CONCLUSION: National averages for radiotherapy could be calculated. The values obtained in this PCS will be a useful measure for future QA in radiation oncology and in other specialties in Japan.

Esophageal Neoplasms↗
PubMed1999

Analysis of 57 nonagenarian cancer patients treated by radical radiotherapy: a survey of eight institutions.

BACKGROUND: As the human society grows more aged, it is considered important to elucidate factors essential in applying radical radiotherapy (RT) to the elderly, with ages as high as 90 years and greater. METHODS: A retrospective survey was conducted for patients 90 years of age or older who received radiotherapy with radical intent in eight leading institutions in Japan from 1990 through 1995. RESULTS: Fifty-seven nonagenarian patients were studied. Their ages ranged up to 98 (median 91) and there was a strong female preponderance (M/F: 16/41). The distribution by site was as follows: head and neck, 16; skin and adnexae, 11; uterine cervix, 7; esophagus, 6. The prevailing histopathological diagnosis was squamous cell carcinoma (34), followed by adenocarcinomas (8). The highest age at RT was 98 years [female, skin cancer, died of senility 2.5 years after treatment, with no evidence of disease (NED)] and the longest survivor is 102 years old (female, glottic cancer T2, age at RT 93, alive NED for 8 years, uses wheel-chair). The rate of completion of treatment was 75% (43/57), if the treatment field was limited to the gross primary tumor volume only and if the cumulative dose was above 80% of the tolerable adult dose. Familial escort was necessary for most of the patients in completing the day-to-day RT. CONCLUSION: Radiotherapy is feasible with radical intent even in the elderly, if the treatment field is limited to the gross primary tumor volume only, if the cumulative dose is above 80% of the tolerable adult dose and if familial support is adequate.

Aged↗
PubMed1999

Differential roles of IL-1 and TNF-alpha on graft-versus-host disease and graft versus leukemia.

We demonstrate an increase in graft-versus-host disease (GVHD) after experimental bone marrow transplant (BMT) when cyclophosphamide (Cy) is added to an otherwise well-tolerated dose (900 cGy) of total body irradiation (TBI). Donor T cell expansion on day +13 was increased after conditioning with Cy/TBI compared with Cy or TBI alone, although cytotoxic T lymphocyte (CTL) function was not altered. Histological analysis of the gastrointestinal tract demonstrated synergistic damage by Cy/TBI and allogeneic donor cells, which permitted increased translocation of LPS into the systemic circulation. TNF-alpha and IL-1 production in response to LPS was increased in BMT recipients after Cy/TBI conditioning. Neutralization of IL-1 significantly reduced serum LPS levels and GVHD mortality, but it did not affect donor CTL activity. By contrast, neutralization of TNF-alpha did not prevent GVHD mortality but did impair CTL activity after BMT. When P815 leukemia cells were added to the bone marrow inoculum, allogeneic BMT recipients given the TNF-alpha inhibitor relapsed at a significantly faster rate than those given the IL-1 inhibitor. To confirm that the role of TNF-alpha in graft versus leukemia (GVL) was due to effects on donor T cells, cohorts of animals were transplanted with T cells from either wild-type mice or p55 TNF-alpha receptor-deficient mice. Recipients of TNF-alpha p55 receptor-deficient T cells demonstrated a significant impairment in donor CTL activity after BMT and an increased rate of leukemic relapse compared with recipients of wild-type T cells. These data highlight the importance of conditioning in GVHD pathophysiology, and demonstrate that TNF-alpha is critical to GVL mediated by donor T cells, whereas IL-1 is not.

Animals↗
PubMed1999

IL-11 separates graft-versus-leukemia effects from graft-versus-host disease after bone marrow transplantation.

We recently showed that IL-11 prevents lethal graft-versus-host disease (GVHD) in a murine bone marrow transplantation (BMT) model of GVHD directed against MHC and minor antigens. In this study, we have investigated whether IL-11 can maintain a graft-versus-leukemia (GVL) effect. Lethally irradiated B6D2F1 mice were transplanted with either T cell-depleted (TCD) bone marrow (BM) alone or with BM and splenic T cells from allogeneic B6 donors. Animals also received host-type P815 mastocytoma cells at the time of BMT. Recipients were injected subcutaneously with recombinant human IL-11 or control diluent twice daily, from 2 days before BMT to 7 days after BMT. TCD recipients all died from leukemia by day 23. All control- and IL-11-treated allogeneic animals effectively rejected their leukemia, but IL-11 also reduced GVHD-related mortality. Examination of the cellular mechanisms of GVL and GVHD in this system showed that IL-11 selectively inhibited CD4-mediated GVHD, while retaining both CD4- and CD8-mediated GVL. In addition, IL-11 treatment did not affect cytolytic effector functions of T cells after BMT either in vivo or in vitro. Studies with perforin-deficient donor T cells demonstrated that the GVL effect was perforin dependent. These data demonstrated that IL-11 can significantly reduce CD4-dependent GVHD without impairing cytolytic function or subsequent GVL activity of CD8(+) T cells. Brief treatment with IL-11 shortly after BMT may therefore represent a novel strategy for separating GVHD and GVL.

Animals↗