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Distribution of Pathogenic Bacteria and Its Influence on Expression of BCL-2 and BAX Protein after HSCT in the Patients with Hematological Malignancies / 中国实验血液学杂志
Journal of Experimental Hematology ; (6): 840-844, 2016.
Article in Chinese | WPRIM | ID: wpr-246857
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the distribution of pathogenic bacteria in the patients with hematologic malignancies received hematopoietic stem cell transplantation (HSCT) and its influence on the expression of BCL-2 and BAX proteins.</p><p><b>METHODS</b>The clinical data of 64 patients with malignant lymphoma (ML) received auto-HSCT from January 2011 to December 2015 in our hospital were analyzed. On basis of post-treansplant infection, the patients were divided into infection group (36 cases) and non-infection group (28 cases). The distribution of pathogenic bacteria in 2 groups was identified, the T lymphocyte subsets of peripheral blood, expression level of apoptotic proteins and C-reaction protein (CRP) in 2 group were detected.</p><p><b>RESULTS</b>Thirty-six strains of pathogenic bacteria were isolated from 36 case of hematological malignancy after HSCT, including 24 strains of Gram-negative bacteria (66.67%) with predominamce of klebsiella pneumoniae (19.44%). The periperal blood CD4+ (t=2.637, P<0.01), CD4+/CD8+ ratio (t=8.223, P<0.01), BCL-2 protein (t=5.852, P<0.05), BCL-2/BAX ratio (t=14.56, P<0.01) in infection group were significantly lower than those in non-infection group, while CD8+ (t=2.285, P=<0.01), CRP (t=39.71, P<0.01), BAX level in infection group were higher than those in non-infection group. The pearson correcation analysis showed that the CD4+/CD8+ ratio in infection group positively correlated with BCL-2/BAX ratio (t=0.341, P<0.05), while serum CRP level in infection group negatively correlated with BCL-2/BAX ratio (t=-0.362, P<0.05).</p><p><b>CONCLUSION</b>The pathogenic bacteria infecting ML patients after HSCT were mainly Gram-negative bacteria. The post-transplant infection can promote the expression up-regulation of related inflammatory factors and apoptotic proteins. The pathogens may be involved in cell apoptisis that provides a new strategy to treat the hematologic malignancies.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: C-Reactive Protein / Up-Regulation / T-Lymphocyte Subsets / CD4-CD8 Ratio / Hematopoietic Stem Cell Transplantation / Hematologic Neoplasms / Proto-Oncogene Proteins c-bcl-2 / Cell Biology / Bcl-2-Associated X Protein / Gram-Negative Bacteria Type of study: Prognostic study Limits: Humans Language: Chinese Journal: Journal of Experimental Hematology Year: 2016 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: C-Reactive Protein / Up-Regulation / T-Lymphocyte Subsets / CD4-CD8 Ratio / Hematopoietic Stem Cell Transplantation / Hematologic Neoplasms / Proto-Oncogene Proteins c-bcl-2 / Cell Biology / Bcl-2-Associated X Protein / Gram-Negative Bacteria Type of study: Prognostic study Limits: Humans Language: Chinese Journal: Journal of Experimental Hematology Year: 2016 Type: Article