Showing 6 results for Ghaffari
Adonis Poormohammadi Mojaveri, Morteza Sattari, Zahra Jafari-Azar, Alireza Ghaffari, Pedram Ariapanah,
Volume 14, Issue 3 (7-2011)
Abstract
Background: Bacterial cellulose synthesized by acetobacter xylinum is a harmless microbial product with unique characteristics as an ideal dress that many studies have been done on. The aim of this study was to consider the capability of this product in absorption and release of tetracycline hydrochloride. Indication of this capability can pave the way for supplying a new dressing containing antibiotic from bacterial cellulose.
Materials and Methods: In this experimental study, cellulose sheet was initially impregnated on aqueous solution of tetracycline hydrochloride. Then the release process was considered in diluted water and normal saline. Ultra violet spectrophotometry method was applied to the detection of the antibiotic during absorption and release processes.
Results: The results of data analysis demonstrated that bacterial cellulose has a great potential in absorption of tetracycline hydrochloride and can release it in a wet environment.
Conclusion: Considering the advantages of bacterial cellulose over traditional dressings, the results of this study can provide the ground for further research on supplying an ideal dressing containing antibiotic from this microbial product.
Davood Bashash, Seyed H. Ghaffari, Maryam Kazerani, Kebria Hezaveh, Kamran Alimoghaddam, Ardeshir Ghavamzadeh,
Volume 15, Issue 9 (February 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.
Seyyed Kazem Shakouri, Bina Eftekhar-Sadat, Farzaneh Johari, Morteza Ghojazadeh, Salar Hemmati, Ghader Ghaffari,
Volume 18, Issue 9 (12-2015)
Abstract
Background: Lateral epicondylitis may cause pain and functional disability in many daily activities. Steroid injection or phonophoresis are the recommended treatments in this regard. In this study, we aim to compare the effect of ultrasound guided local injection of dexamethasone with dexamethasone phonophoresis for treatment of lateral epicondylitis.
Materials and Methods: In this clinical trial, patients with lateral epicondylitis were randomely assigned to injection (n=18) and phonophoresis (n=18) groups. Three patients in phonophoresis group dropped out from the study. In injection group, dexamethasone with lidocaine was injected once with the guide of sonography at the base of common extensor tendon. Phonophoresis group received 5 minutes treatment with ultrasound using dexamethasone gel for 10 sessions. Patients’ pain in total and in specific and usual activities according to PRTEE questionnaire before, one and three months after treatment was calculated.
Results: Injection group compared to phonophoresis had significantly better improvement in pain (p=0.04), but there was no significant difference in serial changes of functional subscale and total score of PRTEE between groups. Injection group compared to phonophoresis had also better pain and total score one month after treatment (p=0.003 and p=0.01, respectively).
Conclusion: Dexamethasone injection compared to phonophoresis had significant improvement in patients’ pain which was more apparent one month after treatment, but the results were similar between groups three months after treatment.
Tooran Nayeri Chegeni, Fatemeh Ghaffarifar, Fariba Khoshzaban, Abdolhosein Dalimi Asl,
Volume 20, Issue 12 (3-2018)
Abstract
Abstract
Background: Acanthamoeba is an opportunistic protozoan pathogen that is known to infect the cornea to produce eye keratitis and the central nervous system to produce lethal granulomatous encephalitis. The overall aim of the present study was to determine the anti-amoebic potential of natural compound Peganum harmala against the trophozoites and cysts of Acanthamoeba in vitro.
Materials and Methods: In this experimental study, a clinical isolate of Acanthamoeba was cultured and genotyped. The ethanolic extract of Peganum harmala was prepared. The trophozoites and cysts were collected by washing in page's saline. Various concentrations (1.25, 2.5, 5, and 10 mg/ml) of the ethanolic extract and polyhexanide 0.02% drop as positive control were tested at three different times (24, 48 and 72 h) on trophozoites and cysts of Acanthamoeba in vitro. The viability of trophozoites or cysts was tested by eozin method, MTT, and flowcytometry analysis.
Results: The results revealed that alcoholic extract had remarkable inhibitory effect on the proliferation of Acanthamoeba cysts as compared to non-treated control, and the inhibition was time and dose dependent. In the presence of 10 mg/ml ethanolic extract in medium culture after 72 h, no viable trophozoites were determined and 21.10% cysts of Acanthamoeba were viable. Percentage of trophozoites and cysts viability after adding polyhexanide 0.02% drop in medium culture after 72 hours was 0% and 23.71%, respectively.
Conclusion: Ethanolic extracts of Peganum harmala could be considered a new natural compound against the Acanthamoeba trophozoites and cysts. Further works are required to evaluate the exact effect of this extract on Acanthamoeba agents in animal models.
Sholeh Zakiani , Saied Ghaffari ,
Volume 22, Issue 3 (8-2019)
Abstract
Background and Aim: Promoting spiritual intelligence and adherence to ethics leads to higher quality service, efficiency and effectiveness. The present study was conducted to investigate the relationship between the spiritual intelligence of librarians and the quality of services in the libraries of Shahid Beheshti University of Medical Sciences with a professional ethics approach.
Materials and Methods: The research method was descriptive-correlational and with an objective purpose. The statistical population included 180 librarians working in the library of Shahid Beheshti University of Medical Sciences. Data collection was done by two questionnaires of King and Radad. Data analysis was done by inferential methods and Kolmogrov-Smirnov test. Data were analyzed by SPSS version 22 software.
Ethical Considerations: In this study, all principles of research ethics were considered.
Findings: The results showed that there is a positive and significant relationship between the dimensions of spiritual intelligence(critical existential thinking, production of personal meaning, transcendental consciousness, and extension of consciousness) and the quality of services in the libraries.
Conclusion: The result of the research showed that there is a relationship between the spiritual intelligence of librarians and the provision of quality services in the libraries of Shahid Beheshti University of Medical Sciences with the professional ethics approach. Therefore, using the spiritual intelligence, service quality in the studied libraries could be increased.
Mehrdad Nasrollahzadeh Sabet, Mohammad Foad Heidari, Mohammad Khanalipour, Saadat Allah Ghaffari, Milad Jafari Ashiani, Sajjad Biglari, Emran Esmaeilzadeh,
Volume 23, Issue 5 (December & January - Special Issue on COVID-19 2020)
Abstract
Background and Aim: Since late 2019, with the emergence of a new type of coronavirus that causes a new respiratory disease called COVID-19, there have been many concerns about the spread of this disease and how to deal with it. Due to the ability of the virus to be transmitted rapidly, diagnosing the infected individuals in the early stages for isolating them is critical. This study aims to evaluate the reliability of Computed Tomography (CT) scan in diagnosing COVID-19.
Methods & Materials: Participants were 212 patients admitted to hospital with confirmed diagnosis of COVID-19. Demographic information, medical history, symptoms, and the chest CT scan results were collected and analyzed. Finally, the power of CT scans in the diagnosis of this disease was compared with the Real-Time Polymerase Chain Reaction (RT-PCR) molecular test.
Ethical Considerations: This study received ethical approval from the ethics committee of AJA University of Medical Sciences (Code: IR.AJAUMS.REC.1399.091).
Results: The sensitivity of CT scan in the diagnosis of COVID-19 was relatively high, but its false-positive results were also high.
Conclusion: CT scan is a relatively sensitive method for diagnosing COVID-19, but caution should be made due to its high false-positive results which can lead to increased financial burden on the health system.
