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Showing 19 results for Asadi
Sarie Golmohamadloo , Farzane Broomand, Mitra Asadi Afshar ,
Volume 5, Issue 4 (Winter 2005)
Abstract
Background & Objectives: Unintended pregnancy is a worldwide problem. Despite abundant efforts by lranian family planning authorities during the last decade, unintended pregnancy and its consequences such as infected abortions is still a common problem. The aim of this descriptive study was to examine the causes of unintended pregnancy in Kosar Hospital, Urmia. M e thods : In this descriptive-analytical study the data were collected from 330 unintendedly pregnant women (out of 1830 pegnant women) visiting gynecology unit at Koshar Hospital in Urmia in 1999. These subjects were interviewed to fill out a questionnaire. Statistical analyses were performed with SPSS using t-test and Chi-square. Results: 83.6% of the cases were illiterate and 96.36% were housewives. 59.69% of the cases were above 30 79.09% had 3 or more children. The subjects used the following prophylaxy. Methods: thads. Pills (40%), withdrawal (25.5%), IUD (10%), injection (6.4%), minipills (4.5%), condom (3.6%) breast feeding (2.7%), rhythmic (0.9%) and tubectomy (0.6%). The remaining 5.8% had not used any prevention methods. We found a significant correlation between aging and number of unwanted pregnancies (P<0.0001 r = 0.44) and a negative meaningful correlation between literacy and rate of pregnancy (P<0.0001 r = 0.39). Reasons for failure were irregular use of pills, minipills or condom (90% each), unfamiliarity with prevention affter forgetting to take the pill (0.77%), IUD extraction, interrupted use of DMPA method and incorrect use of breast feeding method. Conclusion: This study reveals that desptie available prevention methods, due to lack of knowledge irregular use and misconceptions about complications of prevention methods, the subjects used unreliable methods which are more likely to lead to failure. Therefore, new measures should be taken in family planning centers to increase awareness among women concerning risk of unitended pregnancy.
Masoumeh Hajishafiha, Shaker Salari Lac , Minoo Khairi Tabar , Siyamak Naji, Mahzad Sadaghiani , Nahideh Asadi ,
Volume 11, Issue 1 (spring 2011)
Abstract
Background & objectives : Today there is a significant progress in the treatment of female infertility but there is no main improvement for the rate of implantation and live birth. This is because of non-implantation and early abortion that lead to decrease the rate of live birth. Genital infections such as bacterial vaginosis are common cause of this problem. Distinction and treatment of bacterial vaginosis is easy and non-expensive. Treatment of bacterial vaginosis could results in improving the rate of implantation and then live birth. Methods: We considered 209 infertile women treated with ICSI (intra cytoplasmic sperm injection). This study was performed in infertility clinic of KOSAR hospital affiliated to Urmia University of Medical Sciences, Iran. Before transferring of embryo, a sample was taken from posterior culdesac secretions by sterile cotton swap and fixed it on lamella. Then bacterial vaginitis was graded by a pathologist. The relationship of bacterial vaginosis with implantation and early abortion was studied. Data were entered into SPSS software and analyzed by t-test and Chi-Square test. p<0.05 is considered statistically significant. Results: Bacterial vaginosis was significantly more frequent in patients with tubal and ovulatory disorder (p=0.013). In women undergoing ICSI, bacterial vaginosis was not associated with decreased conception rate (p=0.892) and with increased rate of early pregnancy loss (p=0.44). Conclution: Bacterial vaginosis is prevalent in women with infertility. It is also the most important cause of infertility in patients with tubal and ovulatory disorder. Bacterial vaginosis does not affect fertilization rate.
Mohsen Mardani Kivi , Kamran Asadi , Keyvan Hashemi Motlagh,
Volume 11, Issue 4 (winter 2011)
Abstract
Background & Objectives: Anatomical reconstruction of articular surface and restoration of walking ability without pain are the main goals of displaced intra-articular calcaneal fracture management, but treatment results are not always satisfied. This paper focused on comparison between open reduction and internal fixation using: A) auto graft B) bone cement, in patients with displaced intra-articular calcaneal fracture. Methods : This prospective comparative study of 44 patients with displaced intra-articular calcaneal fractures. Patients had been divided into 2 groups and then, they were operated by the standard protocol, including lateral approach, open reduction and internal fixation with reconstruction plate. Posterior facet was supported by autogenous bone graft in the first group (BG) and it was strengthened by bone cement in the second group (BC). Patients were followed up from the point of view of following surgical complications: 1- superficial infection, 2- wound dehiscence, 3- incisional site skin necrosis, 4- Sural nerve paresthesia, 5- osteomyelitis. Functional outcome were evaluated using calcaneal fracture scoring system and ankle-hind foot scaling system of AOFAS. The gathered data was analyzed in SPSS 16 software. Results : Of 44 included patients, 36 were male (81.8%) and eight were female (18.2%). The mean of age was 44.25± 11.34 (range: 16-69 yrs), and the mean of follow-up duration was 13.27±2.71 months (range: 9-18 months). The mean of operation time in second group (BC) (41.82min) was significantly lower than first group (BG), (p<0.001). Five patients (23%) from first group (BG) and only one patient (5%) from the second group (BC) showed surgical complications (p=0.079). There was no significant difference between the average score evaluated by calcaneal fracture scoring system and the average scale indicated by ankle-hind foot scaling system. Conclusion : Instead of autogenous bone graft, the use of bone cement decreases the duration of operation time and it seems to lead in less complications.
Kazem Moazedi, Abdollah Asadi,
Volume 12, Issue 1 (spring 2012)
Abstract
Background & Objectives: R eligion and its guidelines have important role on the mental health of people. Many studies show that moral and religious beliefs and behaviors lead to mental relaxation and pleasant living. Religious person shall try to be more helpful and successful in all fields of cultural, social, political and economic life. The aim of this article is to elucidate the role of mental health in the Holy Quran. Methods: This study was performed by the library field based on the results of the existing related researches and reliable sources. Results : If the human psyche is not understood, he could not achieve his perfection and maturity. It is because of lack of knowledge about the mental and spirit damages. How we can understand self and psyche and which information source is the best to refer? From the viewpoint of Quran, the first way to deal with psychological stress is back to human nature which is the base of mental relaxation. Avoid of human nature could lead to moral disorders. Therefore in Islam, regarding human nature is considered to improving mental health. Conclusion: According to our discussion, one of the best and most reliable ways for maintaining and improving mental health includes spiritual beliefs and using concept of God in Holy Quran.
Manoochehr Barak , Saeid Sadeghieh Ahari , Firouz Amani , Gholamreza Asadi, Gity Rahimi , Elham Khadem,
Volume 12, Issue 5 (suppl 2012)
Abstract
Background & Objective: Currently, migration of rural population to cities and developing slums around them are main problems in population settlement that lead to imbalance in health standards such as difference in age groups death. The aim of this study was to examine factors associated with infant mortality in slums of the Ardabil city. Methods: This was a case- control study. All infants’ deaths from 2008 to 2010, which occurred in slums as a case, were included. For each case, tow controls, were chosen. Controls the ones who survived and were living in non marginalized area and years of birth and sex were matched in two groups. Information collected from health centers through questionnaires, interviews with parents and child death files. Results: The majority of mortalities (74.6%) were in neonatal period and 25.4% was in post- neonatal period. The most important causes of deaths in neonatal were prematurity (57%), and in post neonatal period were congenital abnormality (35.4%). Analysis of effective factors showed that birth weight, parents age and education, family income and occupation and smoking of father were highly associated with mortalities. Conclusion: Infant mortality of the family that their father is a smoker and they have low income, and low parental education level is significantly higher and should be taken into serious consideration to reduce the mortality.
Asadollah Asadi , Arash Abdolmaleki, Farhood Najafi,
Volume 13, Issue 1 (spring 2013)
Abstract
Background & Objectives: Polymers as drug carriers are recent advances in drug delivery and led to the new advent field that called polymer treatment. In the present study, the toxic and teratogenic effects of BDP18 were evaluated against chicken embryos as a model. Methods: The BDP18 tri-block copolymer (PLA-PEG2000-PLA) was synthesized. The compound solution was injected in triplicate examination, in the air sac of the eggs, at third day of incubation, and survived fraction of the embryos and Morphological and skeletal changes were recorded . Results: The survived fraction of the embryos depends on the compound concentration. In concentration of 20 mg/ml , 33.3% of the embryos were survived and the LD50 was 10.87 mg/egg . Morphological study of the treated embryos showed no abnormalities in embryos , and skeletal staining showed the deletion of caudal vertebrate in high concentration. Conclusion: The BDP18 copolymer had low toxic and teratogenic effects against the embryos, but it caused the deletion of caudal vertebrate at concentrations above the threshold (10 mg/ml). This polymer can be used as an effective drug -release system in low concentrations .
Mohammad Hosein Razi Jalali, Somayeh Bahrami , Hosein Najafzadeh , Zeynab Asadi,
Volume 14, Issue 3 (Autumn 2014)
Abstract
Background & objectives: The leishmaniases are considered among the major infectious diseases affecting public health in several regions. There are many chemical agents which are effective in treatment of visceral leishmaniasis. But, overall treatment of visceral leishmaniasis is often difficult. Thus, identification of new chemotherapeutic agents is important for treatment of disease. Since targeting of the ergosterol synthesis pathway of Leishmania may be useful therapeutically, the aim of this study was to investigate the effect of alone or in combination of amiodarone and ketoconazole on Leishmania infantum. Methods : To obtain logarithmic promastigotes of L. infantum, the parasites were cultured in BHI medium with FCS 10% together with antibiotics of penicillin and streptomycin and incubated at 24° C. Amastigote forms were obtained in BHI medium supplemented with 20% FCS at pH of 5.5 which incubated in 37° C. L.infantum susceptibility to amiodarone and ketoconazole was evaluated by proliferation of parasites in the absence or presence of these drugs with MTT assay. For evaluation of antiproliferative synergism against promastigotes and axenic amastigotes, fractional inhibitory concentrations (FIC) were calculated. An isobologram curve was constructed too. Results: Amiodarone produced a marked reduction in the viability of L.infantum promastigotes and axenic amastigotes. On the other hand ketoconazole induced a dose dependent effect on the parasites proliferation for promastigotes and axenic amastigotes. When the drugs were used in combination, the results indicated clear synergistic as shown by a concave isobologram and FIC value. Conclusion: The present study represents the evidence that the combination of amiodarone plus ketoconazole acts synergistically in controlling L. infantume in vitro. It is possible that amiodarone could be used in combination with ketoconazole to combat infection at low doses, thus reducing its side effects such as cardiotoxicity, thyroid dysfunction and pulmonary fibrosis.
A Shamsazar, A Asadi, F Shamsazar,
Volume 15, Issue 3 (autumn 2015)
Abstract
Background & Objectives: Maintain of fixed amount of glucose in blood has always been valuable. Especially in diabetic patients it is important to determine accurate amount of it. In this study we are trying to find a method to determination of the amount of serum glucose.
Methods: First a biosensor was prepared using carbon paste electrode modified with Copper Oxide nanoparticles for determination of serum glucose. The synthesized Copper Oxide nanoparticles were studied by using a variety of chemical spectrum UV-Vis, XRD, SEM and TEM. XRD confirmed that our synthesized are Copper Oxide nanoparticles. By measuring of the oxidation currents in the several levels of glucose, the accuracy and efficiency of biosensor was studied.
Results: Based on a increase of the electrocatalytic response of the oxidized form of GOD to dissolved oxygen, the proposed biosensor exhibits a linear response to glucose concentrations ranging from 0 to 15 mM with a detection limit (defined as the concentration that could be detected at the signal-to-noise ratio of 3) of 9 �M at an applied potential of 0.44 V which has better biosensing properties than those from other biosensors. This biosensor retained 89% of its initial response after 30 days storage at pH=7.
Conclusion: Carbon paste electrode and Copper Oxide nanoparticles offer excellent catalytic activity toward hydrogen peroxide generation in enzymatic reaction between glucose oxidase and glucose, which would enable sensitive determination of glucose. This biosensor exhibited good stability, reproducibility and low interferences. It has been used to diagnose diabetes very fast and sensitively and to determine the glucose concentrations in serum samples with satisfactory results.
Abdollah Asadi , Hamed Rezakhani Moghaddam , Aghil Habibi, Kazem Moazedi, Yoosef Hamidzadeh, Mohaamad Taghi Savadpour,
Volume 15, Issue 4 (winter 2015)
Abstract
Background & objectives: Social capital is defined as norms and networks which provide conditions for participation in social activities in order to profit mutually. This study was designed to evaluate the social capital status of students of Ardabil University of Medical Sciences and its relationship with religious attitudes.
Methods: This was a cross-sectional study of 500 students from Ardabil University of Medical Sciences during second half of the academic year 2014. Data were collected using demographic, social capital and religious attitudes questionnaires and analyzed by SPSS 22 using T-Test, Pearson correlation and ONOVA tests.
Results: Total means score for social capital was 80.0±16. There was significant correlation between all dimensions of social capital (except for dimension of family and friends connections) and religious attitudes status (p<0.05).
Conclusion: Due to the influence of social capital and its relationship with the religious attitude, it can be a guide for reduction of concerns about the educated classes and increasing their social capital
Maryam Salem , Tooba Mirzapour, Aboulfazl Bayrami, Mohsen Sagha, Asadollah Asadi,
Volume 17, Issue 1 (spring 2017)
Abstract
Background & objectives: According to importance of bone marrow mesenchymal stem cells in production of different cell lines, transplantation of these cells are used for treatment of many different diseases during cell therapy. Viability and proliferation of these cells after transplantation are very important. Since infertility is as public health problem in men and women, the scientists attempt to produce germ cells from differentiation of stem cells. It is supposed to use these cells for treatment of different illnesses especially for men with lack of germ cells in testes in future. However, in using stem cells for cell therapy the culture medium should be designed to increase the number of cells and efficiency of transplantation and to guarantee the health of the cells in terms of DNA damage. This study designed a suitable culture medium in order to increase the number of colonies and decrease the cell injuries.
Methods: In this study mesenchymal stem cells isolated from bone marrow of mice and exposed to retinoic acid (RA) with concentration of 10-6 M and Sertoli cells condition medium. Since mesenchymal stem cells (MSCs) produce fibroblastic colonies so the number of colonies was counted every 3 days after culture (days of 2, 5, 8, 11, and 15) under inverted microscope. The staining of ethidium bromide-acridine orange was also done for determination of apoptotic nucleus in days of 10 and 15 after culture.
Results: The results showed that the effects of retinoic acid on grow and viability of MSCs is related to the time. It seems that RA increased the proliferation of the cells and the number of colonies increased in low time but the apoptotic cells elevated with increasing the time of culture. Condition medium of Sertoli cells also increased the proliferation of bone marrow stem cells.
Conclusion: According to proliferative properties of condition medium, it seems that using condition medium together with RA is better than RA alone for differentiation of MSCs to germ cells.
Bahman Ebrahimi-Torkamani , Marefat Siahkouhian, Ali Khazani, Anoshirvani Sajad, Bolboli Lotfali, Maryam Asadi,
Volume 20, Issue 3 (autumn 2020)
Abstract
Background & objectives: Over the last couple of decades, research has focused on attempting to understand the genetic influence on sports performance. Whole exome sequencing (WES) has great potential to explore all possible genetic variants associated with physical performance. However, this new technique has not been used in sports genetics research. Therefore the aim of this case study was to report new variants in genes involved in skeletal muscles strength (ACE, NOS3, IGF1R, IL-6) in an elite weightlifter using WES.
Methods: After obtaining a written testimony from a 32-year-old man, who is a member of the Iranian national weightlifting team, 5 cc of blood was taken and then DNA was extracted. DNA samples were analyzed using the whole exome sequencing method.
Results: Whole exome sequencing analysis revealed a missense variant (99454613G>A) in IGF1R, 22771156C>T polymorphism in IL-6, 150695726T>C and 150704250C>G polymorphisms in NOS3 and 61573761T>C and 61564052A>G in ACE genes.
Conclusion: Results of whole exome sequencing analysis revealed a missense variant and polymorphism in muscle strength and hypertrophy related genes in this elite weightlifter. However, other studies with larger sample sizes are needed to investigate the relationship between these variants and power athlete status.
Elahe Mamashli, Farnaz Seifi Skishahr, Marefat Siahkouhian, Manouchehr Iranparvar, Asadollah Asadi, Behzad Davarnia,
Volume 21, Issue 2 (summer 2021)
Abstract
Background & objectives: Sex impacts the manner in which a person responds to such disease as susceptibility and progression. The aim of this study was to investigate the sex differences in the genotype distribution and allele frequency of some of the adiponectin gene polymorphisms and the comparison of the interaction of the studied polymorphisms and type 2 diabetes-related environment risk factors between males and females.
Methods: This study included 103 males and 79 females with type 2 diabetes and 94 healthy males and 61 healthy females for control. Genotyping was performed using amplification refractory mutation system-PCR (T-ARMS-PCR). Statistical analysis was done using SPSS-26.0. The interaction between SNP-SNP and SNPs-environmental factors was analyzed using MDR (version 3.0.2) software.
Results: Sex-genotype interaction effect was significantly associated only for triglycerides with SNP-11391G/A (p= 0.027). For SNP+45T/G, the difference genotypes were distinctly associated with hemoglobin A1c (p=0.024), body mass index (p=0.033) and body fat percentage (p=0.018). For +276G/T fasting insulin level detected a potential difference in genotypes (p=0.016). Regarding to the results of MDR analysis, the combination of fasting blood glucose, rs17300539 and sex was the best three-factor model. In this model, the distribution of patients according to sex is demonstrated that most men with GA and AA genotypes of -11391G/A had Hemoglobin A1C more than 8.5 while in women there was no relation to genotype found.
Conclusion: Sexual difference impact the interaction between adiponectin gene polymorphisms and environmental risk factors. According to the findings of this study, the effect of environmental risk factors on the progression of type 2 diabetes related to Adiponectin gene polymorphisms are demonstrated within the males more than females.
Abbas Sabahi Namini, Arash Abdolmaleki, Sharareh Mirzaee, Mehrdad Sheikhlou, Asadollah Asadi, Ali Shamsazar,
Volume 21, Issue 2 (summer 2021)
Abstract
Background & objectives: Research on intelligent nanomaterials that accelerate the process of nerve regeneration and treatment by different methods such as antioxidant effects, stimulation of nerve cell proliferation, modulation of the immune system and inflammatory factors is great importance. The aim of this study was to prepare cinnamon-coated cerium oxide nanoparticles and evaluate its antioxidant and cytotoxicity effects on PC12 cell line.
Methods: Cinnamon-coated cerium oxide nanoparticles were prepared and their structural properties were evaluated by transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). To evaluate the antioxidant properties of the compounds, free radical trapping methods 2 and 2 diphenyl-1-picryl hydrazyl were used. Cell viability in the presence of compounds was measured by a toxicity test (MTT) [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide]. Data were analyzed by one-way analysis of variance and Tukey's post hoc test.
Results: FTIR spectra and TEM images showed the processing of nanoparticles with an average size of less than 100 nm with cinnamon coating on their surface. Also, the antioxidant capacity of cinnamon-coated cerium oxide nanoparticles was significantly higher (*p<0.038) than extracts and nanoparticles alone at similar concentrations. Evaluation the results of cytotoxicity showed that the lowest toxicity was observed in the cinnamon-coated cerium oxide nanoparticles group.
Conclusion: Results showed higher antioxidant properties and low cytotoxic effects of cinnamon-coated cerium oxide nanoparticles compared to other groups, which leads to better efficacy, proliferation, longer cell survival, its green synthesis and coverage by cinnamon
Majid Asadi-Samani, Navid Jamali, Javad Saffari-Chaleshtori, Korosh Ashrafi-Dehkordi,
Volume 22, Issue 1 (Spring 2022)
Abstract
Background & objectives: Cyclin-dependent kinase 2 (CDK-2) is a serine/threonine protein kinase with regulatory activity in the cell cycle. Inhibitors of this protein are the treatment of choice for a variety of cancers by stopping the cell cycle. In this in silico study, the effects of docking and molecular dynamics of Abemaciclib, Hymenialdisine, and Indirubin on the inhibition of CDK-2 as one of the most important factors in the cell cycle have been investigated.
Methods: PDB file of CDK-2 protein as well as three-dimensional structures of Abemaciclib, Hymenialdisine, and Indirubin were obtained from the protein database (http://www.rcsb.org) and pubchem server, respectively. After simulating CDK-2 in Gromacs software, molecular docking of compounds on CDK-2 was performed by AutoDock 4.2 software. Finally, the most important molecular dynamics factors such as RMSD,the radius of gyration and total energy in the pre-docking state were analyzed and compared to these factors in the post-docking stage.
Results: Abemaciclib has the highest affinity for binding to amino acids at the CDK-2 binding site by releasing binding energy equivalent to 8.23 kJ/mol. The binding of Abemaciclib, Hymenialdisine, and Indirubin to CDK-2, resulted in significant reductions in some molecular dynamics factors such as mean total energy, the radius of gyration, RMSD, and changes in CDK-2 secondary structure.
Conclusion: Abemaciclib, Hymenialdisine, and Indirubin have a high tendency to interact with CDK-2, and this binding can induce significant dynamic molecular changes in the structure of CDK-2 molecule. Based on the results of molecular dynamics simulation, the secondary structure of CDK-2 changes after each ligand binds to it and makes the complex of ligand and protein more stable.
Reza Najafi, Asadollah Asadi, Saber Zahri, Arash Abdolmaleki,
Volume 22, Issue 1 (Spring 2022)
Abstract
Background & objectives: Tissue engineering is a growing field to repair and replace the defective function of damaged tissue or organ, and today it is proposed as a new treatment to replace conventional transplant methods. For this purpose, polymeric biomaterials (scaffolds) and living cells are used. The purpose of this study is to fabricate polycaprolactan (PCL) nanoscaffold and load silymarin on the nanoscaffold to check the biocompatibility and proliferation ability of pc12 cells on it.
Methods: In order to prepare polycaprolactan nanoscaffold and load silymarin on it, 7% polycaprolactan solution (dissolved in acetic acid) was mixed with silymarin solution with a concentration of 0.9% (weight percent), and then the scaffold was prepared using electrospinning device. The morphology of the scaffold was evaluated by scanning electron microscope (SEM) and the chemical structure of the scaffold was evaluated by ATR-FTIR spectroscopy. Toxicity of the scaffold and cell survival of PC12 cells were investigated by MTT test and SEM microscope respectively.
Results: Examining the morphology of the scaffold and its chemical structure showed the appropriate porosity of the scaffold and the successful loading of silymarin on the PCL scaffold. The toxicity of the scaffold was investigated 24, 48 and 72 hours after the cultivation of PC12 cells, and the results showed an increase in cell viability and proper attachment of cells on the scaffold.
Conclusion: The results of this research showed that the loading of silymarin on polycaprolactan scaffold increases the proliferation and survival of PC12 cells. Therefore, this scaffold can be a suitable candidate for nerve tissue engineering.
Aida Nahumi, Maryam Peymani, Hussein A Ghanimi, Asadollah Asadi, Arash Abdolmaleki,
Volume 22, Issue 2 (Summer 2022)
Abstract
Background & objectives: One of the functions of RNA editing is to change the RNA sequence without changing the genomic DNA sequence and changing the fate of cellular RNA. Therefore, studying the clinical application of RNA editing for targeted therapies is necessary.
Methods: All articles related to the subject of the study were searched in the Scopus,
PubMed/Medline, ISI Web of Knowledge, and Google Scholar database.
Results: The changes that occur within the RNA editing are A to I base replacement by adenosine deaminase (ADAR) on RNA and C to U replacement by the apolipoprotein B mRNA-editing enzyme, catalytic polypeptide1 (APOBEC1). Recently, the role of RNA editing in human diseases has been reported.
Conclusion: RNA editing can be used as a new strategy to identify new disease biomarkers and more personalized treatments for various diseases.
Neda Mohammadpour, Nasrin Foladi, Mina Asadi,
Volume 22, Issue 3 (Autumn 2022)
Abstract
Background & objectives: To deal with the more and sudden prevalence of covid-19, dentists should be aware of recent developments, especially the guidelines for the prevention of covid-19. This study aimed to assess of compliance with guidelines about the prevention of covid-19 in the dental setting in Ardabil city in 2022.
Methods: This cross-sectional (descriptive-analytical) study was conducted in the period from May to August 2022. In this study, 254 general and specialist dentists were examined using full-census sampling. The tool for collecting information was a researcher-made questionnaire that was valid and reliable based on the country's guidelines, which included 6 demographic and 41 questions related to compliance with the instructions related to the prevention of covid-19. After collecting the data, they were classified and analyzed using the chi-square and Fisher's exact test. SPSS software version 26 was used for data analysis. The acceptable error level was considered 0.05.
Results: The survey results showed that the rate of compliance with guidelines about the prevention of covid-19 in the index of patient management before treatment was estimated at 45%, in the index of required equipment and personal protection requirements were 72.42%, and in the index of required therapeutic action during the pandemic was 42.81%. There was a significant difference in compliance with the guidelines related to the prevention of covid-19 based on education and work history (p<0.05). However, there was no significant difference in compliance with the guidelines related to the prevention of covid-19 based on gender, age, marital status, and history of corona infection.
Conclusion: The level of compliance with the guidelines related to the prevention of covid-19 in the dental centers of Ardabil city was at an average level and was influenced by factors such as the dentist's education and work history.
Masoomeh Saboorifar, Ali Shamsazar, Asadollah Asadi, Mostafa Shourian,
Volume 23, Issue 3 (Autumn 2023)
Abstract
Background: Determining the concentration of hydrogen peroxide in liquids and biological samples is very important because of its effects on human health. This study aimed to design a new electrochemical biosensor based on hemoglobin to detect hydrogen peroxide in serum samples.
Methods: In this study, a basic science, a biosensor based on modifying the glassy carbon electrode surface with a nanocomposite consisting of cobalt oxide nanoparticles and multi-walled carbon nanotube functionalized with a carboxyl group (MWCNT/Co3O4) and hemoglobin stabilized on this nanocomposite was made as a biological recognition element.
Results: In optimal conditions, the biosensor was used to measure different concentrations of hydrogen peroxide. The designed biosensor showed a wide linear response range from 10 μM to 500 μM, a detection limit of 0.512 μM, and high reproducibility and stability.
Conclusion: In this innovative research work, MWCNTs/Co3O4 nanocomposite was used to make a diagnostic biosensor. The presented biosensor showed an acceptable performance in the measurement of hydrogen peroxide in serum samples and laboratory solutions.
Aida Nahumi, Maryam Peymani, Asadollah Asadi, Arash Abdolmaleki, Yasin Panahi, Mohammad Ali Shahmohammadi,
Volume 23, Issue 4 (Winter 2024)
Abstract
Background: Identifying protein interactions is one of the main challenges in the fields of biostructure and molecular biology. Despite extensive progress, the exact patterns of protein-protein interactions are still unknown. The main goal of this study is to computationally evaluate the interactions of fibronectin-1 in the extracellular matrix of decellularized trachea and integrins in adipose tissue stem cells in order to provide the most accurate possible visualization of these interactions and their role in biological processes.
Methods: After decellularization of the sheep trachea through the detergent-enzyme method, histological evaluations and ultrastructure photography of the samples were done by scanning electron microscopy. Also, the simulations of fibronectin1 binding of extracellular matrix protein with integrin αvβ1 and α5β3 of stem cells derived from adipose tissue were investigated, and interaction energy analysis was applied to predict the structure of protein-protein complexes using the algorithms available in HDOCK and ClusPro servers.
Results: The findings indicated the preservation of extracellular matrix components and scaffold ultrastructure. Also, in order to find the most favorable connection states in terms of energy, some of them were reported as stable interactions among the top types of connections. This insight provides a valuable understanding of cell-matrix adhesion, migration, and signaling, with potential implications for therapeutic development.
Conclusion: The prepared scaffolds are ideal for engineering applications for which computational analysis and experimental data have been used for visualization of stable connection states with energy efficiency between fibronectin and integrin. Also, more studies on cell adhesion modeling in connection with tissue engineering science can provide a suitable field for the development of regenerative medicine in further studies.
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