Showing 26 results for Acute
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.
Shahin Fateh, Mohamd Reza Mamaghani, Ghasem Mosayebi,
Volume 15, Issue 1 (4-2012)
Abstract
Background: Because of high mortality and morbidity of severe acute pancreatitis (AP) and its increasing incidence in recent years, early detection of severity of AP is very important. Since interleukin (IL) rapidly responds to body temperature changes, this study was done to examine the relationship between blood levels of interleukin 15 and 17 and severity of acute pancreatitis.
Materials and Methods: In this cross-sectional study, 52 patients with AP were studied. For all patients, paraclinical information, Ranson criteria, and APACHE-II were completed. Serum interleukin 15 and 17 levels were measured by ELISA method. Then the relationship between them and AP severity was determined based on Ranson criteria and APACHE-II.
Results: In this study, 36.5% of the patients were male and 63.5% were female and the mean age was 61.06 years. The serum level of IL-17 was negatively correlated with the severity of AP based on Ranson criteria (p=0.021, r= -0.319). ROC curve showed significant values for blood level of IL-15 and CRP in AP diagnosis. Sensitivities were 92.3% and 78.8% and specificities were 40% and 48%, respectively.
Conclusion: Based on Ranson criteria, the role of serum level of IL-17 as an unknown factor was seen significant in determining the severity of AP. However, the diagnostic value of serum IL-15 should also be verified with further studies.
Mahmood Amini, Ali Ahmadabadi, Yahya Jand, Ghasem Mosayebi, Ali Ghazavi ,
Volume 15, Issue 2 (6-2012)
Abstract
Background: Acute pancreatitis is a common cause of abdominal pain, without any characteristic signs, symptoms, or a gold standard diagnostic modality. The purpose of this study was to evaluate the diagnostic value of urine trypsinogen-2 strip test in acute pancreatitis. Materials and Methods: In this cross-sectional study, 76 patients with abdominal pain suspected to acute pancreatitis who were admitted to the Emergency ward of Valiasr Hospital, Arak, were evaluated. In 46 patients, acute pancreatitis was confirmed (pancreatitis group), whereas in 28 patients, acute pancreatitis was ruled out (control group). In both groups serum levels of amylase, lipase, CRP, and urine trypsinogen-2 were measured by quantitative and qualitative methods. Sensitivity and specificity of the tests were determined and data were analyzed using SPSS software. Results: Urine trypsinogen-2 dipstick was positive in 36 of the 45 patients in the pancreatitis group (sensitivity: 80%) and in 2 of the 28 patients in the control group (specificity: 92.8%). Urine trypsinogen-2 ELISA test was positive in 41 of the 45 patients in the pancreatitis group (sensitivity: 91.1%) and in 4 of the 28 patients in the control group (specificity: 89%). Amylase sensitivity and specificity were equal to 82.6% and 75%, respectively. Lipase sensitivity and specificity were 76% and 85.7%, respectively. Conclusion: Urine trypsinogen-2 dipstick can be used to differentiate acute pancreatitis from other causes of abdominal pain. This rapid, easy-to-use, and accurate test can be used in emergency wards and primary health care units with limited diagnostic facilities.
Shaban Ali Alizadeh, Abolfazl Fatehi, Yahya Jand, Ghasem Mosayebi, Mohammad Rafiei,
Volume 15, Issue 2 (6-2012)
Abstract
Background: Several studies have demonstrated that the levels of inflammatory markers in healthy women are under the influence of menstrual cycle changes. The aim of this study was to compare blood levels of inflammatory markers in women with appendicitis in different phases of menstrual cycle. Materials and Methods: In this case-control study, 70 female and 12 male patients with appendicitis, and 61 healthy women were enrolled based on inclusion and exclusion criteria. Inflammatory markers, such as leukocyte count, CRP, ESR, and TNF-α were measured and compared using student t-test and one-way ANOVA based on different phases of menstrual cycle. Results: There were no significant changes in the ESR, CRP, and TNF-α concentrations and the number of peripheral blood leukocytes in different phases of the menstrual cycle in women with appendicitis. The mean number of leukocytes and CRP concentrations were significantly higher in patients with appendicitis compared with the control group. Conclusion: The findings show that there are not significant differences in the inflammatory markers in women with appendicitis during the different phases of menstrual cycles. It seems that day to day variation of sexual hormones in the menstrual cycle have led to very different conclusions about the change of inflammatory markers in different phases of menstrual cycle. Therefore, studies investigating inflammatory markers in women with acute appendicitis based on day of menstrual cycle, time of sampling in the day, and severity of appendicitis are suggested.
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.
Kavoos Shahsavari Nia, Farzad Rahmani, Hanieh Ebrahimi Bakhtavar, Ali Akbar Taher Aghdam, Elyar Sadeghi Hokmabadi, Armita Massood,
Volume 17, Issue 1 (4-2014)
Abstract
Background: Sudden visual loss is one of the emergent problems that it may be a sign of a life-threatening disease. It should be quickly evaluated and identified the treatable causes.
Case report: A young man without any history of certain disease was referred to the emergency department with complaints of sudden blindness. He was presented with fever, coriza symptoms and progressive blurring of vision that ultimately led to his visual loss. After carefully evaluation, finally suspected diagnosis of acute fulminant multiple sclerosis was made.
Discussion: Multiple sclerosis is a chronic inflammatory disease that is associated with acute attacks of neurological dysfunction. Some of these attacks are an emergent situation and need to early detection and treatment. There is a variant of Multiple sclerosis that called Acute Fulminant Multiple sclerosis which can cause sudden visual loss.
Amir Abdollah Zangivand, Mahsa Ghasemi,
Volume 17, Issue 6 (9-2014)
Abstract
Background: Inflammation has an important role in the pathogenesis of atherosclerosis. The aim of this study was to evaluate the role of WBC (White Blood Cell) count and incidence of morbidity and mortality in patients with ACS.
Materials and Methods: This prospective study was carried out on 101 patients with ACS who admitted in Bu-ali Sina hospital. All patients were stratified according to WBC categories in to 3 groups, (WBC 1 :<7000 mm3, WBC 2:7000 -10000 mm3, WBC 3:> 10000 mm3). Demographic and laboratory data such as acute reactive protein, cardiac biomarker and etc. were recorded. Adverse cardiac events and mortality were recorded to a phone or in person for six months of follow up period. The collected data were analyzed using SPSS software (Statistical Package for Social Sciences, version 17.0). The Fisher´s exact chi-square test and the student t-test were applied. P-values less than 0.05 were considered significant.
Results: In our study, 5 patients (31.25%) in third group had recurrent non fatal cardiac event and the same percent (31.25%) were died after 6 months follow up. Multivariate analysis showed WBC count >10000 mm3 was strongest predictor of outcome in our patients.
Conclusion: WBC count can be considered one of the strong independent predictor of mortality and cardiac event in patients with ACS.
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.
Khadijeh Khosravi, Nader Zarinfar, Ehsanollah Ghaznavi Rad, Ghasem Mosayebi,
Volume 18, Issue 4 (7-2015)
Abstract
Background: Brucellosis is a highly contagious zoonotic disease between humans and animals known for high frequency of relapsing and ability to cause chronic infection. The function of immune system plays an important role in induction of chronic diseases. However, the role of immune system response is not completely studied. Therefore, this study designed to investigate the cytokine profile of the patients suffering from chronic and acute brucellosis.
Materials and Methods: This descriptive- analytical study was performed on 22 patients with acute brucellosis (mean age 38±17), 21 patients with chronic brucellosis (mean age 43±10) and 21 healthy people (mean age 26±4) with the same age and sex as patients. The serum IFN-&gamma, IL-17, IL-5 and TGF- &beta levels were measured using ELISA method.
Results: The mean IFN-&gamma serum level in acute and chronic brucellosis patients group was significantly higher than control group (p=0.045). The mean IL-17 serum level in acute brucellosis patients was significant decreased once compared with control group and in chronic patients was significantly decreased when compared with control group (p=0.024). In addition, the mean IL-5 and TGF-&beta serum levels of acute brucellosis patients group were significantly decreased as compared to chronic patients (p=0.001).
Conclusion: The results of current study indicate that cytokine profile of chronic brucellosis patients is more related to Th2 immune response. Hence, Th2 immune response inhibition would be an appropriate way to treat and prevent disease to become chronic.
Khadijeh Khosravi, Nader Zarinfar, Ehsanollah Ghaznavi-Rad, Ghasem Mosayebi,
Volume 19, Issue 2 (5-2016)
Abstract
Background: Brucella is an intracellular bacterium that causes chronic infection in humans and domestic animals. The underlying mechanisms that cause prolonged illness are complex and not fully understood. Immune responses may have an important role in the chronicity of infection. Here, we evaluated the lymphocyte proliferation responses in patients with chronic and acute brucellosis.
Materials and Methods: This descriptive - analytical study was performed on 22 patients with acute brucellosis, 21 patients with chronic brucellosis and 21 healthy people with the similar age, sex and genetic background as control group. Peripheral lymphocytes were isolated using Ficoll and the cellular proliferation was quantified in presence of antigen and phytohemaglutinin-A by MTT method.
Results: The brucella antigen-specific stimulation index in patients with chronic brucellosis was significantly lower than the acute brucellosis patients (p=0.001). Also, stimulating the lymphocytes with phytohemaglutinin-A has shown that proliferative response in patients with chronic brucellosis was lower than the other groups (p=0.04).
Conclusion: The results indicated that chronic brucellosis inhibits lymphocyte proliferation. This inhibition of lymphocyte proliferation may be due to the induction of anergy.
Fatemeh Dorreh, Anahita Namdari,
Volume 19, Issue 9 (12-2016)
Abstract
Abstract
Background: Acute bronchiolitis is the most common lower respiratory tract infection in infant and one of their hospital admission reasons. Due to the high prevalence of the disease and unclear effectiveness of existing treatments, the present study was designed to evaluate the therapeutic effect of single dose of injected dexamethasone and inhaled epinephrine in patients with acute bronchiolitis treated with inhaled salbutamol.
Materials and Methods: In this double-blinded clinical trial, 90 infants with age of 2-24 months who were admitted to hospital with acute bronchiolitis were studied. All patients received inhaled salbutamol (0.15 mg/kg) and then were randomly assigned to three groups (n=30) of dexamethasone (0.6 mg/kg), inhaled epinephrine (0.15 mg/kg) and control (distillated water). Heart rate (HR) and respiratory rate (RR), arterial blood oxygen saturation (O2 sat) and respiratory distress scores (RDS) of children at baseline, 30, 60,120 minutes and, 24 hours after intervention were recorded and compared between groups.
Results: The mean of HR, RR and RDS had significant improvement and the mean of O2 sat had significant rising trend and improvement during the study in all groups (p<0.05). The mean of HR in epinephrine group was upper than placebo in all measurements (p<0.001). RDS in epinephrine group was significantly upper than dexamethasone (p=0.002, CI95%=0.58- 2.69) and placebo (p=0.014, CI95%=0.27-2.8)
Conclusion: Based on the result of present study, it seems that inhaled epinephrine or injected dexamethasone have no superiority to placebo in treating infantile acute bronchiolitis and their administration is not recommended.
Naser Saeidi, Zahra Shiravand,
Volume 20, Issue 11 (2-2018)
Abstract
Abstract
Background: Systemic lupus erythematosus is a systemic disease that can lead to lupus nephritis, as one of the most dangerous sign of this disease. In this report, a woman with acute renal failure subsequent from lupus nephritis is introduced.
Case report: 27-year-old woman with no history of systemic disease caused by swelling around the eyes of one month, nausea without vomiting, anorexia, dizziness and a 2-month history of hypertension was admitted. ESR in high range, hypertension and dizziness were also observed. Important findings in the laboratory exam were including pre-orbital edema, azotemia, anemia, hematuria, proteinuria, nephropathy normal size, high titers of anti-nuclear antibody, anti-DNA antibodies and lupus anticoagulant was in a field. Renal biopsy was done and the kidney biopsy response was pauci-immune glomerolu, and the patient was treated by pulse corton and hemodialysis.
Conclusion: Lupus nephritis as an important complication of systemic lupus erythematosus should be considered, so in patients with acute renal failure, lupus nephritis should be considered, while it isn’t usually observed pausi-immune nephritisin renal biopsy in patient with lupus.
Amir Khosravi, Fatemeh Omid Ali,
Volume 21, Issue 2 (5-2018)
Abstract
Abstract
Background: The exhaustive and strenuous exercise may cause damaging effects to the heart. The present study aims to investigate the effect of Saffron stigmas aqueous extracts on serum cardiac troponin T and Creatine kinase MB isoenzyme of male rats following an exhaustive exercise.
Materials and Methods: 64 Wistar male rats were assigned into following four groups (n=16) :1) without exercise +distilled water 2 ml, 2) without exercise+ aqueous saffron extract, 50 mg/kg+ distilled water 2 ml, 3) distilled water 2 ml + 8 weeks exercise, and 4) aqueous saffron extract, 50 mg/kg +distilled water 2 ml + 8 weeks exercise.At the end of experiment, half of the rats were killed immediately before exhaustive exercise; on the other hand remaining rats were killed immediately after performing an acute bout of exhaustive exercise on the treadmill. Serum cardiac troponin T and CK-MB isoenzyme levels were measured by ELISA and spectrophotometric methods, respectively. Data were analyzed by one–way ANOVA.
Results: The results show that in all groups, cardiac troponin T and CK-MB isoenzyme serum levels were significantly increased following an exhaustive exercise. The lowest increase was observed in group 4 and the highest increase was observed in group 1 (p<0.05).
Conclusion: Based on the results of this study, it can be concluded that the use of saffron extract with aerobic training is more effective than aerobic exercise or saffron extract alone in modifying the increase of serum troponin T and CK-MB isoenzyme level following an exhausting exercise.
Asma Mahmoodi, Farhad Ghadiri, Ali Rashidi-Pour,
Volume 21, Issue 4 (8-2018)
Abstract
Background and Aim: Stress is a powerful modulator of memory performance. Emotional arousal affects the various aspects of learning and memory through stimulation of the amygdala or the hippocampus. The aim of the present study was to investigate the effects of stress related acute exercise on reconsolidation of dart throwing task learned with errorless method.
Materials and Methods: Participants of the study included 60 girls with an average age of 20.5 who were randomly assigned to three groups including: target (n = 20), control (n=20), and control 2 (n = 20). On the first day, all three groups under the same conditions acquired the skill of throwing darts in an errorless method and immediately after that performed the immediate retrieval. On the second day, after memory reactivation, the target group was exposed to stress resulting of acute exercise while the control 1 group did rest. The acute stress was presented to control 2 group without memory reactivation. During the experiment, changes in salivary cortisol were measured. On the third day, the delayed memory retrieval for each of the three groups was implemented.
Findings: the results showed that while the control 1 and control 2 groups did not show enhancement of dart throwing learning across delayed memory retrieval than immediate retrieval, the target group showed substantial enhancement across the same time (p<0.05).
Conclusion: Our findings indicate that acute stress after memory reactivation can facilitate the implicit motor memory reconsolidation in women.
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.
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.
Ali Hojabr Rajeooni, Parvaneh Mehrbod,
Volume 23, Issue 5 (11-2020)
Abstract
Background and Aim: Coronavirus Disease 2019 (COVID-19) is one of the most important viral diseases in the current decade which has caused widespread crisis worldwide. The disease was first reported on December 8, 2019 in Wuhan, Hubei Province, China, in the patients with acute respiratory distress syndrome. On January 8, 2020, the Centers for Disease Control and Prevention in China identified the virus, and it was named 2019-nCoV by the World Health Organization (WHO). The name of the disease was later changed to COVID-19. According to the International Committee on Taxonomy of Viruses, the virus is called SARS-CoV-2 which belongs to the family of Coronaviridae. The viruses of this family have caused outbreaks in several countries (SARS in 2003 and MERS in 2013) which have led to death and economic loss.
Methods & Materials: In this review study, COVID-19 was studied from various aspects including evolutionary process and molecular biology of its virus. The selected articles were examined based on the information available in the WHO database. SARS-CoV-2 proteins were identified molecularly and functionally using data analysis and bioinformatics methods, and then related drugs and their effects on virus replication and inhibition were investigated.
Ethical Considerations: All ethical principles were observed in this study.
Results: Studies on the structure of SARS-CoV-2 and drug therapies to inhibit the disease progression showed that the use of different pharmaceutical strategies is effective in treating COVID-19 depending on the progression of the disease. Molecular studies showed that the use of nucleoside analogues and protease inhibitors is effective in the course of the disease and intravenous immunoglobulin, aminoquinoline compounds, TMPRSS2 inhibitors and viral S protein can be effective in the early stages of disease.
Conclusion: In order to control COVID-19, it is very important to study the structure of SARS-CoV-2 virus and its biology in the body. It is essential to identify the drugs that affect the virus based on its biological structure. Due to the structural changes of the virus and successive mutations in the virus genome as well as the emergence of resistant strains or highly contagious strains, further studies on the structure of SARS-CoV-2 and its changes in the body are recommended for designing pharmaceutical and therapeutic strategies. These strategies varies according to the stage of the disease, such that some drugs prevent the virus from entering the target cells in the early stages of the disease and other drugs, in combination with the virus’ surface glycoproteins, prevent the virus antigen from binding to receptors in the host cells. In the late stages of the disease, antiviral drugs including protease inhibitors and nucleoside analogues, interfere with the replication and structure of the virus. Due to intermittent changes in the virus and the development of drug-resistant viruses, it is important to continuously review virological and clinical studies and the performance of existing drugs against SARS-CoV-2.
