The acute leukemia in children

The Effect of Uteroferrin and Recombinant GM-CSF on Hematopoietic Parameters in Normal Female Pigs (Sus scrofa)

Thirteen patients with chronic granulocytic leukemia were given 28 separate irradiations to the spleen for the treatment of their disease. The radiation was given as a single dose that ranged between 100 and 700 rads. The changes in the circulating white blood cell (WBC) count could be represented by the expression $N=B_{0}+S_{0}(e^{-\beta t})$ where N is the number of WBC per mm3 of blood at day t; S0 is the number of WBC, at time zero, originating from the spleen; and B0 is the number of WBC stemming from nonirradiated parts of the body, mostly bone marrow. The disappearance rate β, determined by an indirect method, indicated that S0 cells were leaving the blood with a half-time of 4.5 days. The number of S0 cells could be calculated a posteriori by the expression $S_{0}=(N_{0}-N)/(1-e^{-\beta t})$, where N0 is the number of WBC before spleen irradiation and N the number of WBC at t days after irradiation.

The acute effects of dihydrocapsaicin (DHC) and capsaicin (CAP) on the number of white blood cells (WBCs), neutrophils, eosinophils, basophils, monocytes, lymphocytes, T lymphocytes, B lymphocytes and NK cells, and serum corticosterone levels were studied in rats. Male 7-wk-old SD rats were divided into DHC (3.0 mg/kg BW), CAP (3.0 mg/kg BW) and control (CON) groups. The number of total WBCs was 1.30-1.42 times significantly higher in the DHC group than in the CON group at 6-12 h. The number of neutrophils was 1.62 times significantly higher in the DHC group than in the CON group at 12 h. The number of total WBCs and neutrophils, however, showed no significant changes between the CAP and CON groups. The number of lymphocytes was 0.61 and 0.70 times significantly lower in the DHC and CAP groups than in the CON group at 3 h. The number of T lymphocytes and B lymphocytes was 0.74 and 0.54 times lower in the DHC group than in the CON group, respectively. CAP, however, did not significantly change the number of T lymphocytes or B lymphocytes. No significant changes in the number of NK cells were observed among the three groups. CAP and DHC did not change the number of monocytes, eosinophils or basophils. No significant changes of the serum corticosterone levels were observed among the three groups. In conclusion, capsaicinoids decreased the number of acquired immunity cells, and increased the number of total WBCs and neutrophils without changing the number of monocytes, eosinophils or basophils. The magnitude of these effects was relatively higher in DHC than in CAP.

Thalidomide is a drug with anti-angiogenic, anti-inflammatory, immunomodulatory and anti-cancer properties that were found to inhibit the production of TNF-α in vitro, stimulate reactive oxygen species production, and inhibit VEGFR in acute leukemias. Ex vivo activity of thalidomide as a single agent and in combination with prednisolone or cytarabine in childhood acute leukemias was analyzed. Forty samples of childhood acute lymphoblastic leukemia (ALL) and 13 acute myeloid leukemia (AML) were tested for cytotoxicity by the MTT assay and cell cycle phases by flow cytometry. Control studies were performed on 9 samples of normal lymphocytes and 4 cell lines. A weak anti-leukemic activity of thalidomide against childhood leukemic samples was observed. However, in the presence of thalidomide, cytotoxicity of prednisolone or cytarabine, increased 3.3-fold and 2.7-fold, respectively, in childhood ALL but was not changed in AML. Thalidomide increased apoptosis in lymphoblasts, and modulated cell cycle arrest caused by prednisolone but not cytarabine in childhood acute lymphoblastic leukemia samples. Thalidomide potentiated ex vivo sensitivity of childhood ALL cells to prednisolone and cytarabine, while no sensitization effect was observed in AML cells.

Expression of the Wilms' tumour gene (wt1) has been demonstrated in a large proportion of human acute leukaemias and is thought to play a role in leukaemogenesis. Recent observations in adult patients with acute leukaemia suggest that wt1 gene expression is a poor prognostic factor. In childhood acute leukaemia, the clinical role of wt1 gene expression has not been established. We have therefore investigated bone marrow samples from 50 children with acute lymphocytic leukaemia at the time of diagnosis for the presence of wt1 transcripts to determine whether wt1 gene expression is associated with specific characteristics of leukaemic cells and whether it is predictive of response to treatment. All patients were treated according to the ALL-BFM 90 protocol. The median observation time was 30 months. Wt1 transcripts were detected by RT-PCR in 60% of the diagnostic samples. Wt1 PCR positive patients showed a higher median leukocyte and peripheral blast cell count than wt1 negative patients. High and intermediate risk patients more frequently displayed wt1 transcripts than low risk patients. No correlation between wtl gene expression and FAB type, immunophenotype, co-expression of myeloid antigens or karyotype has been observed. Furthermore, there was no correlation between wt1 gene expression at diagnosis and achievement of complete remission (CR) and no difference in disease-free survival (DFS) or overall survival (OS) between wt1 positive and negative patients (p > 0.1). These data indicate that (1) wt1 gene expression at diagnosis is detected more frequently in patients with high leukocyte and peripheral blast cell counts, but is not associated with specific characteristics of leukaemic cells, (2) wt1 gene expression is not an independent prognostic factor for CR, DFS or OS in childhood ALL treated by an intensive therapy protocol.

The aim of the study is to follow up a number of biochemical, immunological and physiological changes associated with vitamin D deficiency in pregnant women. 50 samples were collected from pregnant women, 50 from control group and 50 from non-pregnant women. A number of laboratory tests were carried out on the withdrawn blood samples. These tests examined the ELISA to measure vitamin D concentration. The concentration of vitamin D in the pregnant women group, control group and the non-pregnant women group (26.31,43.97,50.9) were found to be Nano mole / L respectively, indicating a decrease in vitamin D concentration in pregnant women compared to the control group. The results of the present study showed a significant decrease in the volume of the red blood cells in the three studied groups at the probability level P <0.05 where the average ratio of the volume of the red blood cells in the group of pregnant women and control group and the group of non-pregnant women was (40.0, 39.7,37.3 ) % respectively. The results of the comparison between the two groups showed no significant differences in the size of the size of the red blood cells in the three studied groups at the probability level P <0.05. The results of the statistical analysis showed significant differences in the blood platelet counts in the three studied groups at the P <0.05 level. The mean number of the blood platelet counts in the pregnant women group, control group and the non-pregnant women group were ( 222, 237,208) X1000/mm3 respectively. Comparison between the two groups showed no significant differences in the number of thrombocytes in the three studied groups at the probability level P <0.05.The results of the statistical analysis showed a significant increase in the number of white blood cells in the blood of pregnant women and non-pregnant women at the probability level P <0.05 compared to the control group and the average number of white blood cells in the pregnant women group, control group and the group of non-pregnant women (35.0, 9.08, 10.6 ) cell/mm3 respectively. A significant decrease in the IgE concentrations in the three studied groups at the level of probability P <0.05 and the average IgE concentration in pregnant women's blood and control and non-pregnant women (82.20,90.6, 79.8) U / L respectively, where no significant differences between the three studied groups at the probability level P <0.05. In the case of CRP, the results of the effective C test in the serum of the three studied groups showed that all samples had a negative result. As for the results of the blood components, there was a significant decrease in the concentration of hemoglobin in the blood of pregnant women and non-pregnant women compared to control group at the level of probability P <0.05 where the concentration of hemoglobin in the group of pregnant women and control group and the group of non-pregnant women (11.6,12.8,8.4) mm / 1hour, respectively, where the results of the comparison between the two averages showed significant differences between the group of non-pregnant women and the control group and the absence of the significant differences between group of the women's control group t pregnant at the level of probability P <0.05. The results showed a significant difference between the non-pregnant women group and the control group at P <0.05.

Hyperleukocytosis and extreme hyperleukocytosis, defined as initial white blood cell counts greater than 100 × 109/L and 200 × 109/L, respectively, have been associated with unfavorable outcomes. This study aimed to determine the early complications and survival outcomes of childhood leukemia patients with hyperleukocytosis. The medical records of 690 children newly diagnosed with acute leukemia between January 1998 and December 2017 were retrospectively reviewed. The Kaplan–Meier method and log-rank test were used to assess and compare the survival outcomes. Multivariate Cox proportional hazards regression was used to determine associated risk factors for overall survival. We found that 16.6% of 483 childhood acute lymphoblastic leukemia (ALL) patients and 20.3% of 207 childhood acute myeloid leukemia (AML) patients had hyperleukocytosis at diagnosis. ALL patients with hyperleukocytosis had more early complications than those without hyperleukocytosis (p &lt; 0.05). Among the ALL group, the 5-year overall survival rate for those with hyperleukocytosis was significantly lower than for those without hyperleukocytosis (37.2% vs. 67.8%, p &lt; 0.0001), while the difference was not statistically significant in the AML group (19.0% vs. 30.2%, respectively, p = 0.26). Hyperleukocytosis (hazard ratio [HR]: 2.04), extreme hyperleukocytosis (HR: 2.71), age less than 1 year (HR: 3.05), age greater than 10 years (HR: 1.64), and male sex (HR: 1.37) were independently associated with poorer overall survival in childhood ALL patients. Extreme hyperleukocytosis (HR: 2.63) and age less than 1 year (HR: 1.82) were independently associated with poorer overall survival in AML patients. Hyperleukocytosis was associated with adverse survival outcomes in childhood leukemia.

This study focuses on acute myeloid leukemia (AML), a condition with a 5-year survival rate below 30% despite various treatment options. Recent strides in targeted therapies have shown promise, leading to better outcomes with minimal toxicity. These advances underscore the importance of discovering new diagnostic and prognostic targets for AML. In this context, the authors investigated the expression of microRNA-106b-5p (miR-106b-5p), Rab10 mRNA, and Rab10 proteins in peripheral blood and bone marrow (BM) samples from both healthy individuals and AML patients at different stages of the disease (initial diagnosis, recurrence, and complete remission). This examination aimed to identify potential biomarkers for AML diagnosis, treatment, and prognosis. From June 2021 to December 2022, they collected 100 BM and peripheral blood samples. The relative expression of miR-106b-5p and Rab10 mRNA in the BM of AML patients was measured using Real-time polymerase chain reaction (qRT-PCR), while the relative expression of Rab10 protein in serum was determined using the ELISA method. The chromosomal karyotype of initially diagnosed patients was analyzed using the R tape. The qRT-PCR results revealed that the expression of miR-106b-5p and Rab10 mRNA were significantly higher in patients at initial diagnosis and recurrence compared with healthy individuals and those in complete remission (p < 0.001). They observed a significant reduction in the expression of miR-106b-5p, Rab10 mRNA, and Rab10 protein in the BM and peripheral blood of patients during complete remission (p < 0.05), as demonstrated by dynamic monitoring of five patients in the initial group. Furthermore, they found a close association between the expression of miR-106b-5p and the number of white blood cells at the initial diagnosis in AML patients (p < 0.05). Spearman correlation analysis revealed a positive correlation among miR-106b-5p, Rab10 mRNA, and Rab10 proteins (p < 0.05). The diagnostic potential of miR-106b-5p and Rab10 proteins was underscored by Receiver Operating Characteristic (ROC) curve analysis, which demonstrated their high accuracy in AML diagnosis (AUC: 0.944 and 0.853, respectively; p < 0.0001). Additionally, Kaplan-Meier survival analysis suggested that lower expression of these markers was associated with better prognoses (p < 0.05). In summary, their findings propose miR-106b-5p and Rab10 proteins as promising biomarkers for AML, offering insights for diagnosis, treatment, and prognosis.

The aim of this work was to determine the role of intraperitoneally-administered vitamin E and selenium on the biochemical and haematological parameters in the blood of rats. Thirty-two adult male Wistar rats were used in this study. All rats were randomly divided into four groups. The first group was used as the control. The second group was intraperitoneally administered with vitamin E (+/-(-)alpha-tocopheroryl acetate, 10 mg day-1), the third group with Se (Na2SeO3 0.2 mg over a day), and the fourth group with vitamin E and Se (vitamin E 10 mg + Na2SeO3 0.2 mg over a day). This administration was done for 5 weeks. Blood samples were taken from animals at the end of the dosage period and biochemical parameters in serum samples and haematological parameters in total blood were determined. The levels of total cholesterol (p < 0.01) and number of white blood cell (p < 0.001) in blood were significantly higher in the vitamin E group than in the control group. The levels of ALP, total cholesterol (p < 0.01) and number of white blood cells (p < 0.01) in blood were significantly higher in the selenium group than in the controls. The levels of glucose (p < 0.05), ALP (p < 0.01), total cholesterol (p < 0.001) and number of white blood cells (p < 0.01) were higher in the vitamin E and selenium combined group than in the controls. Other parameters considered within this trial (ALT, LDH, creatinine, albumin, total protein, amylase, creatine kinase, HDL triglycerides, total lipid, sodium, chloride, uric acids, red blood cell, haemoglobin, packed cell volume, MCV, MCH, MCHC) did not show statistically significant differences between the control and injected groups. The results indicated that blood glucose and total cholesterol levels, ALP activity and white blood cell counts were significantly increased by intraperitoneal administration of vitamin E and selenium in rats.

Four hundred thirty patients with high-risk acute lymphoid leukemia were entered on the acute leukemia in childhood protocol (AlinC 12) of the Pediatric Division of the Southwest Oncology Group (now the Pediatric Oncology Group) between 1976 and 1979. This study was a prospective randomized comparison of two regimens that had as their primary differences: (1) an intensification period with Cytoxan (cyclophosphamide) and asparaginase after induction; (2) a period of intravenous methotrexate before initiating maintenance; and (3) in the regimen that had those two additions, triple-drug chemoprophylaxis of the central nervous system (CNS) using methotrexate, hydrocortisone, and cytosine arabinoside as compared to cranial irradiation and intrathecal methotrexate. All patients received vincristine and prednisone induction, 6-mercaptopurine and methotrexate maintenance, and vincristine and prednisone pulse intensification. There was no significant difference in the rate of bone marrow relapse. However, overall disease-free survival favored the arm with intensification and chemoprophylaxis because of a lesser incidence of extramedullary relapse. Thus, for treatment 1 versus treatment 3 the two-sided P values were for overall disease-free survival 0.16; bone marrow relapses 0.13; all CNS relapses 0.04; and all extramedullary disease relapses 0.013. It is concluded that intensification as delivered in this protocol protects against testicular relapse and that chemoprophylaxis is adequate prophylaxis against isolated CNS relapse.

Dengue hemorrhagic fever (DHF) is a public health problem in Indonesia whose number of cases continues to increase and its spread is increasingly widespread.Tests used to diagnose dengue fever include a white blood cell count test.White blood cells are cells that play a role in the body's defense system. The reason is, white blood cells help fight infections in the body, such as viruses, bacteria, parasites and fungi. In patients infected with dengue fever, the white blood cell count is usually normal but then decreases (leukopenia) and neutropenia becomes dominant. Thisresearch was conducted from March to April 2023.The aim of this study was to measure the number of white blood cells in dengue fever patients.This type of research is descriptive. The research was carried out using an automatic analysis method (blood analysis) in the laboratory ofKlinik Dr.Trisna Garut, using samples from 30 dengue fever patients who were tested. In this study, the number of white blood cells in dengue fever patients at Klinik Dr.Trisna Garut was 14 (46.7%).Wich is Normal And the white blood cell count results of dengue fever patients at Klinik Dr.Tisna Garut General Hospital decreased by 16 (54.3%).

Hyperleukocytosis is an important cause of morbidity and mortality among acute leukemia patients. The data on hyperleukocytosis from this part of world is scarce. We therefore retrospectively reviewed the clinical and morbidity profile of childhood acute leukemia presenting with total leucocyte count (TLC) &gt;100,000 over a duration of about 2.5 years at our center. Of 140 acute leukemia patients, 24 had hyperleukostasis at presentation. All 24 patients were of lymphoid lineage. The Mean TLC was 193539( + 92078)/microlitre, and TLC was &gt;200000/microlitre in 16(66.67%) patients. Tumor lysis was present in 12(50%) patients, while superior mediastinal syndrome was present in 4(16.67%). Features of leukostasis were present in 6(25%) patients (2 had neurological involvement, 3 had pulmonary involvement and 1 had features of both pulmonary &amp; neurological stasis). Renal functions were deranged in 5(20.83%) patients. Further, 11(45.8%) patients had hemorrhagic complications. All 24 patients received hyper hydration, sodium bicarbonate and allopurinol. Chemotherapy was initiated once metabolically stable. One patient died during the first induction and four relapsed during follow-up. Childhood acute leukemia with hyperleukocytosis is associated with significant morbidity which can be managed with immediate hospitalization, aggressive management with hyper hydration, allopurinol, alkalinization of the urine and intensive monitoring before beginning chemotherapy.

To investigate the clinical features, distribution of pathogenic bacteria, and drug resistance of bloodstream infection in children with acute leukemia. Clinical data of 93 blood culture-positive children with acute leukemia from January 2015 to December 2019 in Department of Pediatrics, The Second Hospital of Anhui Medical University were analyzed retrospectively. In these 93 cases, 78 cases were in the period of neutrophil deficiency. There were 54 Gram-negative bacteria (G-) (58.1%) found through blood culture, and the top 4 strains were Escherichia coli (15.1%), Klebsiella pneumoniae (13.9%), Pseudomonas aeruginosa (6.5%), and Enterobacter cloacae (6.5%). There were 39 Gram-positive bacteria (G+) (41.9%) detected, and the top 4 strains were Staphylococcus epidermidis (10.8%), Streptococcus pneumoniae (6.5%), Staphylococcus hemolyticus (5.4%), and Staphylococcus human (5.4%). Among 74 strains of pathogenic bacteria from acute lymphoblastic leukemia (ALL) children, there were 29 strains of G+ bacteria (39.2%) and 45 strains of G- bacteria (60.8%). While in 19 strains from acute myeloblastic leukemia (AML) patients, G- bacteria accounted for 47.4% and G+ bacteria accounted for 52.6%. In 15 ALL children without neutropenia, G+ bacteria made up the majority of the strains (66.7%). In the 93 strains of pathogenic bacteria, 13 (13.9%) strains were multidrug-resistant. Among them, extended-spectrum β-lactamases accounted for 42.9%, carbapenemase-resistant enzyme Klebsiella pneumoniae 15.4%, and carbapenemase-resistant enzyme Enterobacter cloacae strains 33.3%, which were detected from G- bacteria. While, 13.3% of methicillin-resistant coagulase-negative Staphylococci accounted for 13.3% detected from G+ bacteria, but linezolid, vancomycin, teicoplanin Staphylococcus and Enterococcus resistant were not found. The average procalcitonin (PCT) value of G- bacteria infection was (11.02±20.282) ng/ml, while in G+ infection it was (1.81±4.911) ng/ml, the difference was statistically significant (P<0.05). The mean value of C-reactive protein (CRP) in G- infection was (76.33±69.946) mg/L, and that in G+ infection was (38.34±57.951) mg/L. The prognosis of active treatment was good, and only one case died of septic shock complicated with disseminated intravascular coagulation (DIC) and gastrointestinal bleeding caused by carbapenemase-resistant enzyme enterobacteriaceae. G- is the major bacteria in acute leukemia children with bloodstream infection, but the distribution of ALL and AML strains is different. G- bacteria dominates in ALL, while G+ bacteria and G- bacteria are equally distributed in AML. Non-agranulocytosis accompanied by bloodstream infections is dominant by G+ bacteria. The mean value of PCT and CRP are significantly higher in G- bacteria infection than in G+ bacteria.

The purpose of this study is to see how low-power red laser helium-neon and diode lasers with wavelengths of 632.8 nm and 650 nm, respectively, affect some human blood sample factors like viscosity HCT, Platelets PLT, White blood cells WBC, white blood lymphocytes LYM, neutrophilic white blood cells NEUT, red blood cells RBC, and Erythrocyte Sedimentation Rate ESR. Blood samples were collected from healthy people and placed in EDTA-contained tubes, blood tests were performed on control samples in a blood analyzer, and the samples were divided into two parts and split into two equal tubes to be irradiated with diode and helium-neon lasers for 15 minutes. Using a blood analyzer, measurements were taken immediately after irradiation. The results of this analysis indicated a decrease in the number of white blood cells (WBC), red blood cells (RBC), and blood viscosity (HCT), as well as a significant rise in the number of neutrophils (NEUT) and platelets (PLT) and increase in the Erythrocyte Sedimentation Rate ESR after exposure to both helium-neon and diode lasers. This suggests that It is possible to make recommendations, a low-power laser could be used to stimulate blood cells so a laser could be used to treat blood viscosity. Because of the increasing concentrations of free intracellular Calcium ions and the action of laser on the plasma composition, it is acceptable to suggest that laser irradiation can lower the number of white blood cells (WBC), red blood cells (RBC), and the reason of that is because of a mechanical change in the blood such as a change in the pores of the surfaces and their fixation.

In December 2019, a novel coronavirus was identified in Wuhan City, Hubei Province, China and later the disease was named coronavirus disease 2019 (COVID-19). On March 11, 2020, the World Health Organization (WHO) officially announced that COVID-19 had reached global pandemic status. This article summarized the understanding of the etiology, pathogenesis, epidemiology, clinical characteristics, diagnosis, treatment, rehabilitation, and prevention and control measures of COVID-19 based on the available data and anti-epidemic experience in China.