[Cryptococcosis in hematology practice].

Aim: To study the clinical manifestations of cryptococcosis, its diagnostic features, and treatment results in patients with hemoblastoses.

Subjects And Methods: The study included adult patients with cryptococcosis treated at the Hematology Research Center (HRC) in 2005 to 2011. The diagnosis of cryptococcosis was established on the basis of isolation of Cryptococcus neoformans from a blood culture or determination of positive cryptococcal antigen in the cerebrospinal fluid (CSF) of patients with infection symptoms.

An Efficient Method for the Delivery of the Interleukin-2 Gene to Human Hematopoietic Cells using the Fiber-Modified Recombinant Adenovirus.

Recombinant human adenovirus serotype 5 (Ad5/35F-IL2) with modified fibres containing the C-terminal domain fiber-knob of human adenovirus serotype 35, carrying the gene of recombinant human IL-2, has been designed. As a result of the fiber modification, the adenovirus can efficiently deliver the genetic information to bone marrow leukocytes and the tumor blood cells KG-1A (human myeloblastic leukemia cells) and U937 (human histiocytic lymphoma cells), which are normally resistant to Ad5 infection. The flow cytometry data reveal that the modified Ad5/35F penetrates into a population of monocytes, granulocytes, and blast cells of human bone marrow.

[Dynamic study of Bcl-2, Bax, p53, and ACE expression in CD34+ cells of peripheral blood and bone marrow in acute leukemia patients in the course of induction chemotherapy].

Aim: To determine unbalance in the system of programmed cell death in the cells CD34+ of the bone marrow (BM) and peripheral blood (PB) before and after cytostatic impact in acute leukemia (AL).

Material And Methods: Flow cytoflowmetry estimated expression of Bcl-2, Bax, p53 and ACE in the cells CD34+ of BM and PB from 10 AL (4 AML and 6 ALL) patients. PB and BM samples were studied before polychemotherapy (PCT) and in the course of induction treatment: on day +8, +21 (blood only), +36 - 38.

[First results of Ph-negative acute lymphoblastic leukemia therapy of adults according to the protocol of Research Group of Russian Hematological Centers ALL-2009].

Aim: To review results of 2-year experience in execution of the protocol on the treatment of adult acute Ph-negative lymphoblastic leukemia ALL-2009.

Material And Methods: Of 111 patients registered in the study from November 2008 to December 2010 the analysis covered 96 patients from 23 hematological centers in 18 towns of the RF.

Results: Treatment according to the Protocol ALL-2009 resulted in achievement of a complete remission in 91.

[Prolonged bone marrow aplasia in patients with acute leukemia after chemotherapy].

Aim: To analyze the causes of prolonged hematopoietic tissue aplasias in patients with acute leukemias (AL) after chemotherapy courses.

Materials And Methods: Data on 7 patients with acute myeloid leukemia, followed up at the Hematology Departments, Hematology Research Center, Russian Academy of Medical Sciences, over the period 2003 to 2007, who had developed deep bone marrow aplasia (BMA) inadequate to cytostatic drug exposure during chemotherapy, were analyzed. The authors compared in all the patients the values of peripheral blood and bone marrow (BM) puncture specimens and the results of blood tests using the polymerase chain reaction at different AL development stages with the results of an immunohistochemical study using the markers of viruses of hepatitis C and B, a herpes group (EBV, CMV, HSV-1, HSV-2) and parvovirus B19.