Showing 16 results for Leukemia
Kamran Moshfeghi, Nader Dadgar, Mohammad Rafiee,
Volume 6, Issue 4 (12-2003)
Abstract
Introduction: Nearly, 6% of recently diagnosed cancer in the United States was upon to lymphoproliferate and leukemia and 9% of fatality in cancerous people was upon to these two illnesses. Using some simple, cheap and in-hand tests and special consideration to clinical inspections in suspected subjects provide a faster diagnostic and suitable treatment. It may ultimately promote the quality of life and decline the fatality among patients.
Materials and methods: This was a cross-sectional investigation which carried out during a 1.5 years in the form of forward direction. Forty-two lymphoproliferate (28 lymphoblast and 14 Hotchkin) and 21 acute lymphoblastic leukemia (10 acute lymphoblast leukemia and 11 miloid acute leukemia) subjects were evaluated. ESR, LDH and ALP levels were measured in all patients. In clinical examinations, oversizing of lymph nodes, spleen and liver were exactly considered.
Results: According to our results the best tests to rule in and rule out acute leukemia from lymphoprolifeatives were ESR and LDH, respectively. Additionally, The most sensitive and specific evaluations to rule out these two diseases were LDH and oversizing of liver inspection. It was also determined that LDH is the best screening test to rule out leukemia from lymphoproliferate.
Conclusion: Using of simple examinations such as ALP, LDH, ESR and more consideration to oversized spleen, liver and lymph nodes in each suspected patients, we could easily differentiate lymphoproliferate and acute leukemia from each other.
Ahmadi, Moosavi, Hosseinpour Feizi,
Volume 13, Issue 3 (9-2010)
Abstract
Background: Recently, reports have been made of the effects of boric acid (BA) on cancer prevention and inhibition of cancer cell proliferation. This study was designed to investigate the effects of this compound on K562 cell line as a model of chronic myeloid leukemia (CML). Materials and Methods: In this experimental trial, K562 cell line was cultured in the presence of 0.75 to 12 mmol concentrations of boric acid for 24, 48, 72, and 96 hour intervals. Anti-proliferative and cytotoxic effects of BA were measured by trypan blue exclusion test and MTT assay, respectively. Flow-cytometery was utilized for evaluating the effects of BA on cell cycle. Wright-giemsa staining was used for determining the effects of BA, and latex phagocytic assay was used for evaluating the phagocytic potential of the differentiated cells. Results: BA induced growth inhibition of K562 cells in a dose and time dependent manner after 96 hours of treatment with 12 mmol BA, cell proliferation of K562 cells was inhibited to about 83% (p<0.001). In addition, BA induced G1 cell cycle arrest in a way that for instance, after 6 days of treatment with 9 mmol BA, 98% of cell populations were at G1 level. Wright-giemsa staining and latex phagocytic assay results confirmed that K562 cells differentiated toward monocyte-macrophage lineage. Conclusion: Noticing the anti-proliferative and differentiating effects of BA, and no evidence of its adverse effects, this compound can be used as alone or in combination with other drugs in CML differentiation therapy.
Mohammad Amin Moosavi, Soroush Moasses Ghafary, Masood Asadi, Iraj Asvadi Kermani ,
Volume 14, Issue 4 (9-2011)
Abstract
Background: Leukemia is a malignant and progressive disease. Over-expression of inhibitors of apoptosis proteins (IAPs), such as survivin and its anti-apoptotic variants, including sur-ΔEx3, is the main cause of resistance to apoptotic effects of chemotherapy drugs. In the present study, the effects of CBX on apoptosis and expression level of survivin and sur-ΔEx3 and K562 cells (experimental model of chronic myeloid leukemia) were investigated.
Materials and Methods: In this experimental study, human K562 cells were cultured and exposed to CBX. Trypan blue exclusion test was used to evaluate growth inhibitory and viability effects of the drug. Fluorescent microscopy (acridine orange/ ethidium bromide double staining) and DNA electrophoresis were applied to the study of apoptosis. The expression level of survivin and sur-ΔEx3 was studied by semiquantative RT- PCR.
Results: The results showed that after the 48 h treatment of K562 cells with 150 µM CBX, significant growth inhibitory and apoptotic effects (up to 50%) were induced. In addition, after 2-4 h of treatment with CBX (150 µM), down-regulation of survivin and sur-∆Ex3 were observed. However, the expression level of survivin and sur-ΔEx3 increased to the level of control cells with longer treatment times (6-12 h).
Conclusion: Noticing the apoptotic and down-regulatory effects of CBX on survivin and sur-∆Ex3 expression, this drug can be used as a potential candidate for further studies on CML treatment, especially for inhibition of drug resistance in leukemia cells.
Mohammad Amin Moosavi , Soroush Moasses Ghafary, Masood Asadi, Iraj Asvadi Kermani ,
Volume 14, Issue 5 (11-2011)
Abstract
Background: To date, several drugs have been proposed for the treatment of acute promyelocytic leukemia (APL) however, none of them has resulted in complete remission. Therefore, many efforts are in progress to find new drugs with the capability of inducing apoptosis. Recently, anti-carcinogenic effects have been reported for a drug named carbenoxolone (CBX) on several cell lines. In the present study, the effects of CBX on NB4 cell line, as an experimental model of APL, were examined.
Materials and Methods: In this trial, NB4 cell line was cultured and treated with different concentrations of CBX (50-250µM) in various time intervals (12-48 hours). Trypan blue exclusion test was used to evaluate growth inhibitory and viability effects of the drug on NB4 cell line. Fluorescent microscopy (acridine orange/ethidium bromide double-staining) and agarose gel electrophoresis DNA were used to study apoptosis.
Results: CBX induced growth inhibition of NB4 cells so that growth inhibition rates of NB4 cells, after the 48 hour of treatment with 50, 100, 150, 200, and 250 µM CBX were 32.65, 47.52, 60.73, 68.91, and 74.33%, respectively. Furthermore, the results of DNA fragmentation and fluorescent microscopy assays indicated that apoptosis is a major mode of cell death after treatment of NB4 cells with above concentrations of CBX.
Conclusion: Noticing the growth inhibitory and apoptotic effects of CBX on human promyelocytic leukemia NB4 cells, it can be considered as a potential candidate for further studies on APL treatment.
Mohammad Amin Moosavi, Negin Seyed Gogani , Iraj Asvadi Kermani , Masood Asadi,
Volume 14, Issue 6 (1-2012)
Abstract
Background: Nucleostemin plays a critical role in controlling proliferation and self-renewal of stem cells and cancer cells. Thus, inhibition of nucleostemin expression could be a potent therapeutic approach in cancer treatment. In the present study, the effects of nucleostemin gene silencing in K562 cell line were studied.
Materials and Methods: In this experimental study, after transfecting NS-specific siRNA into K562 cells, changes in nucleostemin gene expression pattern were determined by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR). Trypan blue exclusion test, MTT assay, and fluorescent microscopy were used to evaluate the growth inhibition and apoptosis of K562 cells, respectively. Flow-cytometery was utilized for evaluating the effects of nucleostemin gene silencing on cell cycle.
Results: The results showed the high expression of nucleostemin gene in K562 cells. NS-siRNA transfection into K562 cells at 200 nM inhibited the nucleostemin mRNA level up to 55% after 48 hours when compared to corresponding control cells. Forty eight hours after transfection, the cell growth decreased up to 33.7%. In addition, the silencing of nucleostemin induced G1 cell cycle arrest. Furthermore, fluorescent microscopy assays indicated that apoptosis occurred 48 hours after silencing nucleostemin gene expression.
Conclusion: Noticing the potent growth inhibitory and apoptotic effects of nucleostemin siRNA in human myeloid leukemia K562 cells, silencing this gene can be a potential target for inhibiting K562 cells as the stem cell model of chronic myeloid leukemia.
Amir Almasi-Hashiani, Soheila Zareifar, Seyed Hamid Hosseini, Aziz Dehghan,
Volume 15, Issue 2 (6-2012)
Abstract
Background: Leukemia is the most common type of cancer in children which its relapse decreases the patients’ survival rate. The aim of this study was to determine the risk factors involved in leukemia relapse in patients in Shahid Faghihi Hospital, Shiraz, during 2004-2009 years.
Materials and Methods: In this retrospective cohort study, 280 patients with acute lymphoblastic leukemia and acute myeloid leukemia were included. Patient characteristics were analyzed with respect to their association with recurrence through Chi-square test, Fisher’s exact test, and logistic regression model using SPSS software version 16 (P-value<0.05).
Results: Logistic regression model revealed a statistically significance relationship between age and recurrence of the disease (odds ratio (OR) = 0.35, 95% confidence interval (CI) = 0.15-0.82), odds ratio of relapse in the 5-10 years old age group was 0.35 times more than the 0-5 years old age group (p=0.01).
Conclusion: Noticing the greater likelihood of relapse in 0-5 years old age group compared with the 5-10 years old age group, more attention and better follow-up for decreasing the side effects of the disease and enhancing the survival rate of the 0-5 y/o age group are recommended.
Davood Bashash, Seyed H. Ghaffari, Maryam Kazerani, Kebria Hezaveh, Kamran Alimoghaddam, Ardeshir Ghavamzadeh,
Volume 15, Issue 9 (2-2013)
Abstract
Background: Since nearly 90% of patients with acute promyelocytic leukemia (APL) have high telomerase activity and significant shortened telomere length, these patients have, therefore, been suggested to be good candidates for the therapeutic intervention with telomerase inhibitors. This study was done to investigate the effects of BIBR1532, a non-nucleoside inhibitor of telomerase, on APL cells. Materials and Methods: In this experimental study, for investigating the effect of BIBR1532, NB4 leukemic cells were cultured in the presence of various concentrations of BIBR1532. Succeeding apoptosis assay, Caspase-3 activity assay, and quantitative real-time PCR were applied to examine the effect of this drug on apoptosis percenage, enzymatic activity of Caspase-3, and quantitative expression of genes mRNA involved in apoptosis. Results: The results showed that BIBR1532 induced apoptosis in NB4 cells in a dose-dependent maner. Moreover, real time PCR results showed that BIBR1532 led to a significant decrease in mRNA of Bcl-2 gene and signficant increases in transcription of Bax, PUMA, and Caspase-3. Conclusion: Since treatment with BIBR1532 could exert rapid apoptotic cell death in NB4 cells andactivate cellular apoptosis route, anti-telomerase-based therapy can regarded as a suitable strategy for APL treatment. Patients with progressive shortening of telomere length and high levels of telomerase activity are suitable candidates for treatment with telomerase inhibitors.
Aziz Eghbali, Afsaneh Akhondzadeh, Mohammad Rafiee, Fatemeh Dorreh,
Volume 16, Issue 4 (7-2013)
Abstract
Background: Osteopenia is a common and sometimes disabling consequence of the treatment of common neoplastic diseases, such as acute lymphoblastic leukemia (ALL) and lymphoma in children. The aim of the present study was to evaluate the preventing effects of alendronate on steroid-induced osteopenia in children with ALL and non- Hodgkin’s lymphoma (NHL).
Materials and Methods: In this clinical trial, 30 children with ALL and NHL were purposefully selected. All patients received the same induction chemotherapy protocol. Then they were randomly divided into two matched groups. All of them received equivalent supplement of 400 IU/d vitamin D and 30-40mg/kg/d calcium. The patients of the case group received 35mg/week alendronate for 6 months as well. Lumbar spine and whole body bone densitometry were performd before and after intervention and Z score was calculated for all patients.
Results: The mean age of the studied population was 6.11(±3.36) years and 15 of the children (50%) were male. There was no statistically significant difference in lumbar spine and whole body bone densitometry and Z score before and after intervention between the two groups (p>0.05). The improvement of bone densitometry and Z score were seen in both groups after intervention which was more in the case group but it was not statistically significant (p>0.05).
Conclusion: Administration of 35 mg/week alendronate for 6 months does not cause significant improvements in bone densitometry variables in children with ALL and NHL.
Neda Mokhberian, Forouzandeh Mahjoubi, Razieh Pour Ahmad, Mojtaba Alivandi,
Volume 16, Issue 10 (1-2014)
Abstract
Background: Multidrug resistance is the main reason for unsuccessful chemotherapy. The important reason of drug resistance is ATP dependent pumps shus as MDR1 that extrude drugs from the cell. MDR1 is high polymorphic. It seems that polymorphisms influent on gene expression and response to treatment. The aim of this study was investigation of C1236T polymorphism MDR1 gene and it’s association with response of treatment in childhood acute lymphoblastic leukemia.
Materials and Methods: In this descriptive study, C1236T polymorphism of MDR1 was investigated in 44 acute lymphoblastic leukemia childhood and 40 healthy individual by ARMS-PCR technique. Association of this polymorphism with response to treatment was also investigated. Data were analyzed using Chi-squre test and SPSS software. P values <0.05 were considered to be statistically significant.
Results: There was no significant difference in frequencies of C1236T polymorphism between patients and healthy group (p=0.876). Frequency of C1236T polymorphism of MDR1 between responder and non responder was not significant (p=0.304).
Conclusion: It seems that there is no correlation between C1236T polymorphism of MDR1 gene and response to treatment. So the role of C1236T polymorphism in gene expression MDR1 in childhood acute lymphoblastic leukemia and response to treatment is still controversial.
Elahe Aslani, Nooshin Naghsh, Monire Ranjbar,
Volume 16, Issue 10 (1-2014)
Abstract
Background: Chronic myeloid leukemia (CML) is a malignant clonal disorder of hematopoietic stem cells which results in increase of myeloid cells, erythroid cells and platelets in the peripheral blood and hyperplasia in bone marrow. The research evaluates the cytotoxic effect of hydro-alcoholic extract of M.polegium before flowering aerial organs on K562 cell line as a model of chronic myeloid leukemia.
Materials and Methods: In this experimental trial, Leaves and stems of M. pulegium before flowering collected from Afoos city and extraction using maceration method. K562 cells were cultured and treated with concentrations of extract (12.5-100 &mug/ml) and different times (24,48,72 hour). Cytotoxicity of M. pulegium before flowering extract against K562 leukemia cells was estimated by the MTT test method. The absorbance was measured using an ELISA plate reader at 540 nm. Survey on data accomplished with the use of SPSS15 software and one-way ANOVA test analysis and Tukey test and p<0.001 was considered significant.
Results: Hydro-alcoholic extract of Mentha pulegium before flowering showed the highest cytotoxic effect (IC50=50 &mug/ml) and 72 hour after treatment on K562 cell line .in other words, hydro-alcoholic extract of Mentha pulegium before flowering extracts a dose and time dependent cytotoxic effect on K562 cell line.
Conclusion: Considering the cytotoxic effect of hydro-alcoholic extract of M.polegium before flowering aerial organs on K562 cells, the plant can be considered as a potential candidate for further studies on CML treatment.
Fatemeh Keikhaei, Nooshin Naghsh, Mehrdad Modaresi,
Volume 17, Issue 6 (9-2014)
Abstract
Background: Leukemiais a malignant and progressive disease of the Hematopoietic tissues of the body. The pistacia atlantica tree base, the geographic in large areas of the Mediterranean and the Middle East is growing. K562Cell class is considered as laboratory model of chronic phase of human CML. We compared the growth inhibitory effects SUZIN as a chemical compared with pistacia atlantica as a combined Zn plant antioxidant capacity in reducing cancer has been studied.
Materials and Methods: Pistachio nut was collected from around Kerman, then they were dried in room temperature and extraction was performed for 48 hours by maceration method. K562 cell class was incubated in medium RPMI-1640 fortified with 10%(v/v) FBS and 50% Streptomycin-Penicillin. Cytotoxic effect of hydro-ethanolic extract of pistacia atlantica against cancer cells K562 was evaluated in three interval by MTT method. Light absorbance by Eliza device was measured in wave length 540 nm. Statistical analysis was performed using SPSS15 software and ANOVA test.
Results: Pistacia atlantica in 24h and in concentration 100&mug/ml andSuzin in48h and in 12.5 &mug/ml,72 h and in 50 &mug/ml induced growth inhibition half of the cells were K562. Results obtained from changes in cell morphology influenced by hydro-ethanolic extract of pistacia atlantica and SUZIN suggest abnormal transformation of cells that probably represents apoptosis and necrosis.
Conclusion: Time and concentration against cytotoxic effect of Pistacia atlantica have the combined effect. Whileiron supplementation, alone time is due. Special concentration of pistacia atlantica having high antioxidant capacity with the Suzincan be considered as a potential target for inhibiting K562 cells in treatment of blood cancer.
Behnaz Tavasoli, Rima Manafi, Fatemeh Kiani, Majid Safa, Ahmad Kazemi,
Volume 17, Issue 11 (2-2015)
Abstract
Background: Doxorubicin is a chemotherapeutic agent still in widespread use in hematologic malignancies. A side effect of anthracyclines such as doxorubicin is the activation of nuclear factor-&kappaB (NF-&kappaB), a potent inducer of antiapoptotic genes, which may blunt the therapeutic efficacy of the drugs. In this study, the effect of indole -3-carbinol (I3C) on the activation NF-&kappaB and the anti-apoptotic genes whose expression is regulated by NF-&kappaB was assessed in NALM-6 cells.
Materials and Methods: NALM-6 cells were preincubated with various concentrations of I3C and then treated with doxorubicin. Cellular DNA content assay and Annexin V-FITC staining were performed by flowcytometry for evaluation of apoptosis. For assessing the effect of I3C on the expression of XIAP, survivin, and nuclear p65 proteins, NALM-6 cells were pretreated with I3C and then incubated with doxorubicin. Whole-cell and nuclear extracts were prepared for Western blot analysis. A paired t-test was conducted to evaluate the results.
Results: DNA histogram analysis of NALM-6 cells indicates a combination of I3C with doxorubicin significantly escalated the percentages of sub-G1 population cells compared with doxorubicin - only treated group (p<0.05). Annexin V-FITC staining also showed that cotreatment of NALM-6 cells with I3C and doxorubicin significantly increased the proportion of Annexin-V positive cells in comparison with the doxorubicin treated cells (p<0.05). The western blot analysis indicated I3C significantly inhibits both doxorubicin -induced nuclear translocation of p65 and the expression of doxorubicin-induced NF-&kappaB target.
Conclusion: Our results indicated that using natural non-toxic inhibitors of NF-&kappaB such as I3C in combination with anthracyclines might be a rational combination therapy for BCP-ALL cells in which NF-&kappaB is constitutively active.
Farshideh Didgar, Gholamreza Noori Broujerdi, Nasrinsadat Mirtalaee,
Volume 18, Issue 5 (8-2015)
Abstract
Background: Hydatid disease is a zoonotic infestation by a tapeworm of the genus of Echinococcus that characterized by cystic lesions in the liver and lungs but rarely in other parts of the body.
Case: Known case of chronic Lymphocytic leukemia was a 56-years old man with several hydatid cysts of liver and lungs that was hospitalized because of ascites and abdominal pain. The patient received albendazol and surgical operation with diagnosis of peritonitis and complicated hydatid cyst in lungs and liver and Peritoneum. Patient expired with DIC and sepsis.
Conclusion: This case report provides evidence that complicated hydatid cysts in immunocopromised patients have a bad prognosis and can not be safely treated by medication and surgery.
Arman Zamani, Abolghasem Babaei, Nayyer Sadat Mostafavi,
Volume 22, Issue 1 (4-2019)
Abstract
Background and Aim: Diagnosis of leukemia is very difficult, therefore, it is necessary to use image processing techniques. The main objective of this study was to provide a system based on intelligent models that could improve the accuracy of the diagnostic system for acute leukemia.
Materials and Methods: The images produced in this study were extracted from the University Degli Studi Dimilan database and processed in the MATlab 2014a software. In this research, Fuzzy-Cmeans method was used in fragmentation and neural network and support vector machine in classification networks.
Ethical Considerations: In this study, all principles of research ethics were considered.
Findings: Feature data were extracted using the original image transfer to RGB, HSV, Lab and Enhanced RGB spaces. The data obtained from the previous step were entered into the SVM network, then the network separated normal data from abnormal data. The results of comparing the output of the proposed method with different educational methods showed the highest mean of accuracy equal to 95.7%.
Conclusion: The application of the proposed network in this study was that eliminate the weak points of all the networks in addition to presenting the advantages of these network. Combining the networks improved the accuracy of output up to 98% and considerably reduced the time required for calculations.
Mahdieh Mondanizadeh, Niloofar Moradi, Razieh Amini, Behzad Khansarinejad, Ghasem Mosayebi,
Volume 22, Issue 5 (11-2019)
Abstract
Background and Aim Chronic Lymphocytic Leukemia (CLL) is the most commonly occurring leukemia in adults, accounting for about 30-25% of total leukemia. One of the important etiological causes of this leukemia is the disruption of the Nuclear Factor Kappa B (NF-kB) signaling pathway. The two proteins of Apoptosis-Inducing Ligand (APRIL) and B-Cell Activating Factor (BAFF) play a role in the pathogenesis of this leukemia by affecting the NF-kB signaling pathway. In this study, due to the effect of miRNAs in regulating many cellular processes, the prediction of the prominent miRNAs targeting APRIL and BAFF transcripts in B-cell CLL patients was evaluated using specific and different bioinformatics programs.
Methods & Materials Afterwards retrieving the sequences of APRIL and BAFF proteins from the NCBI website, by using several programs including miRanda, TargetScan, miRWalk, DIANA and miRDB with different algorithms, the prediction of miRNAs targeting these genes was investigated.
Ethical Considerations This study was approved by the Research Ethics Committee of Arak University of Medical Sciences.
Results Based on the scoring system of bioinformatics programs, “hsa-miR-145-5p” and “hsa-miR-185-5p” were identified as miRNAs targeting APRIL gene, while “hsa-miR-424” and “hsa-miR-497”were miRNAs targeting BAFF gene. They were suggested for the practical studies in future.
Conclusion Based on the important role of APRIL and BAFF genes in the normal process of cell death and B-cell evolution, it seems that the mi-RNAs predicted by bioinformatics programs using different algorithms can be used as a diagnostic molecular biomarker to identify B-cell CLL patients.
Masoomeh Rahimzadeh, Siroos Naeimi, Mohammad Mahdi Moghanibashi, Khalil Khashei Varnamkhasti,
Volume 23, Issue 4 (9-2020)
Abstract
Background and Aim: In acute myeloid leukemia, a large number of immature cells develop, which can related to some single nucleotide polymorphisms presence in positions of genes that encodes enzymes involved in cell activation and evolution signaling pathways. In this study, the association of rs104893674 (A / C) polymorphism with the risk of Acute Myeloid Leukemia (AML) in samples obtained from Fars and Isfahan Province hospitals was investigated.
Methods & Materials: In the present case-control study conducted at Islamic Azad University of Kazerun in 2019, 94 AML patients and 99 age and sex-matched healthy individuals were enrolled. The rs104893674 (A / C) polymorphism was determined by Tetra Primer ARMS PCR method. Data were analyzed by SPSS (version23) software using Chi-square statistical test.
Ethical Considerations: This study with research ethics code IR.IAU.KAU.REC.1398.051 has been approved by Research Ethics Committee of Islamic Azad University of Kazerun.
Results: The results of this study showed a significant, allele and genotype-specific Association between rs104893674 (A / C) polymorphism with risk of AML. Thus, there are more likely to develop AML in AC genotype, individuals with A allele at this polymorphic site (P=0.000).
Conclusion: The association of acute myeloid leukemia with the genetic polymorphism of the ZAP-70 protein can be considered as an option for prognosis of this complication in susceptible individuals.
