			Home About us Contact

Infectious Death (infectious + death)

Distribution by Scientific Domains

Medical Sciences	100%

Selected Abstracts

Macrophage Colony-stimulating Factor (M-CSF) Prevents Infectious Death Induced by Chemotherapy in Mice, While Granulocyte-CSF Does Not

CANCER SCIENCE, Issue 4 2002
Takao Hidaka
To clarify the effect of granulocyte colony-stimulating factor (G-CSF) and macrophage colony-stimulating factor (M-CSF/CSF-1) on chemotherapy-induced infection, we estimated the effect of those CSFs on a mouse model under severe myelosuppression. First, we established an animal model in which 48.9% (22/45) of C3H/Hej mice died of sepsis related to severe myelosuppression after intraperitoneal administration of a single dose (9 mg/kg) of mitomycin C (MMC). G-CSF or M-CSF was administered to this model on various administration schedules after chemotherapy, and the effect of those CSFs on survival rates, peripheral blood granulocyte counts, expression of adhesion molecules (CD11a, CD11b, CD18) on granulocytes and granulocyte function (phagocytosis and superoxide anion production) were examined. In all G-CSF administration groups, peripheral blood granulocyte counts were increased, but improvements in expression of adhesion molecules such as CD11a and CD18, and granulocyte function were less marked and survival rates were not unproved. Meanwhile, when M-CSF was administered from 1 to 7 days after chemotherapy, granulocyte and platelet counts were increased, and moreover, expression of adhesion molecules and granulocyte function were markedly improved. Furthermore, the survival rate was significantly improved to 77.8% (28/36) compared with the MMC group (P<0.05). Positive rate of blood culture examination at 7 days after chemotherapy in the M group was 0%, and was significantly lower than that in the G group (40%) and the MMC group (40%) (P<0.05). These results demonstrated that it is important not only to increase the granulocyte counts, but also to improve granulocyte functions for preventing infection under myelosuppression after chemotherapy. [source]

Infections and association with different intensity of chemotherapy in children with acute myeloid leukemia

CANCER, Issue 5 2009
Lillian Sung MD
Abstract BACKGROUND: The objectives were to compare infections during different intensities of therapy in children with acute myeloid leukemia (AML). METHODS: Subjects were children enrolled in Children's Cancer Group 2891 with AML. In phase 1 (induction), patients were randomized to intensive or standard timing. In phase 2 (consolidation), those with a family donor were allocated allogeneic stem cell transplantation (SCT); the remainder were randomized to autologous SCT or chemotherapy. This report compares infections between different treatments on an intent-to-treat basis. RESULTS: During phase 1, intensive timing was associated with more bacterial (57.7% vs 39.4%; P < .001), fungal (27.4% vs 9.9%; P < .001), and viral (14.0% vs 3.9%; P < .001) infections compared with standard timing. During phase 2, chemotherapy was associated with more bacterial (56.5% vs 40.1%; P = .005), but similar fungal (9.5% vs 6.1%; P = 1.000) and viral (4.2% vs 12.9%; P = .728) infections compared with allogeneic SCT. No differences between chemotherapy and autologous SCT infections were seen. Fatal infections were more common during intensive compared with standard timing induction (5.5% vs 0.9%; P = .004). Infectious deaths were similar between chemotherapy, autologous SCT, and allogeneic SCT. CONCLUSIONS: Prevalence of infection varies depending on the intensity and type of treatment. This information sheds insight into the mechanisms behind susceptibility and outcome of infections in pediatric AML. Cancer 2009. © 2009 American Cancer Society. [source]

Efficacy and toxicity of reirradiation using intensity-modulated radiotherapy for recurrent or second primary head and neck cancer

CANCER, Issue 20 2010
David J. Sher MD
Abstract BACKGROUND: Patients with locally recurrent squamous cell cancer of the head and neck (SCCHN) are reported to have a poor prognosis and limited therapeutic options. Optimal management is selectively applied and morbid. Both surgical resection and chemoradiotherapy are reported to result in median survivals of approximately 12 months. Intensity-modulated radiotherapy (IMRT) is a highly conformal approach for delivering RT. This study reported the experience of the Dana-Farber Cancer Institute (DFCI) with IMRT-based chemoradiotherapy with or without surgery for locally recurrent SCCHN. METHODS: The current study was a retrospective study of all patients treated at DFCI who were diagnosed with nonmetastatic second primary or recurrent SCCHN and who received reirradiation based on IMRT. The primary endpoint was overall survival (OS), and secondary endpoints were locoregional (LRC) and distant control and acute and chronic toxicity. RESULTS: Thirty-five patients were treated from August 2004 until December 2008. Recurrent disease was treated in the oral cavity (4 patients), larynx/hypopharynx (13 patients), oropharynx (7 patients), nasopharynx (2 patients), and neck (9 patients). The median radiation dose was 60 Gray (Gy), and all patients received concurrent chemotherapy. The median follow-up was 2.3 years. The 2-year actuarial OS and LRC rates were 48% and 67%, respectively. Approximately 91% and 46%, respectively, of all patients developed at least 1 acute and late grade 3 toxicity. Four (11%) late deaths occurred in patients with no evidence of disease (2 aspiration events, 1 oropharyngeal hemorrhage, and 1 infectious death). CONCLUSIONS: Aggressive chemoradiotherapy with IMRT was found to be feasible and resulted in favorable survival outcomes in comparison with published reports. Acute and late toxicities were substantial. The apparently improved LRC appears to carry a significant risk of developing late complications. Cancer 2010. © 2010 American Cancer Society. [source]

Cytokine gene polymorphisms and sudden infant death syndrome

ACTA PAEDIATRICA, Issue 3 2010
L Ferrante
Abstract Aim:, Several studies indicate that the mucosal immune system is stimulated in cases of sudden infant death syndrome (SIDS), and our hypothesis is that this immune reaction is because of an unfavourable combination of functional polymorphisms in the cytokine genes. Methods:, Thus, in this study, single nucleotide polymorphisms (SNPs) in the genes encoding IL-6, IL-8, IL-12, IL-13, IL-16, IL-18 and IFN, were investigated in 148 SIDS cases, 56 borderline SIDS cases, 41 cases of infectious death and 131 controls. Results:, Regarding genotype distribution, no differences between the investigated groups were found. However, in the SIDS group, the genotypes IL-8 ,251AA/AT and IL-8 ,781CT/TT were significantly more frequent in the SIDS cases found dead in a prone sleeping position, compared with SIDS cases found dead in other sleeping positions. In addition, there was an association between fever prior to death and the genotype IL-13 +4464GG in the cases of infectious death. Conclusion:, This study indicates that specific interleukin genotypes are a part of a genetic make up that make infants sleeping prone at risk for SIDS. [source]