Showing 15 results for Fallah
Leyla Amjad, Ahmad Amjad, Fathalah Fallahian, Sara Saadatmand,
Volume 11, Issue 2 (6-2008)
Abstract
Introduction: Pollen grains are male gametophytes of flowering plants that with self interference in fertilization have an important role in plant fertilization, increasing fertilization and improving quality of products. Pollen grains are of important allergenic plants and 80-90% of allergens have plant origin. Achillea plant has medical usage and grows in different regions of the country. This research is done in order to acquire scientific information pertaining to pollen grains allergenicity in their development stages and comparing mature and immature pollen grains allergenicity. Materials and Methods: In this experimental study Achillea plant pollen grains in different developmental stages were collected around Isfahan city and samples were studied using light and electronic microscopy (SEM). Pollen extracts were prepared by incubating pollen grains in phosphate buffered saline, PH: 7.4. The allergenicity experiment was done on male Guinea pigs (Hartley strain, 350-500g weight, 4-6 week-old, Pausteur institute of Iran) and electrophoresis of proteins was done on 12% SDS- polyacrylamide gel. Data were analyzed using one way ANOVA and Duncan test. Results: Images of light and electronic microscopy showed pollens from ellipse-spherical type, with two colpate and echinate exine. The skin tests in Guinea pigs treated with pollen extracts indicated wheal with diameter larger than control group. In clinical tests, the numbers of eosinophils, neutrophils and IgE were increased in animals treated with pollen extract comparing control group. In SDS- PAGE protein profiles, 6 richly colored protein bands were seen in mature pollens in 14.4 to 66 KD and 5 slightly colored protein bands in immature pollens in 14.4 to 45 KD. Conclusion: This research shows changes of immature pollens` ellipse morphology to spherical form in mature pollens, partial increasing in accumulation and height of exine surface echins, changes in quality and quantity of immature and mature pollen grains and difference in their allergenic severity.
Faramarz Fallahi, Mehrdad Roghani, Majid Khalilizad,
Volume 12, Issue 4 (2-2010)
Abstract
Background: Considering some evidence on anti-diabetic potential of Allium ursinum (AU) , this study was conducted to evaluate the effect of oral administration of AU on contractile responsiveness of thoracic aorta in diabetic rats.
Materials and Methods: In this experimental study, 40 male Wistar rats were divided into control, AU-treated control, diabetic, glibenclamide-treated, and AU-treated diabetic groups. For inducing diabetes, streptozotcin (STZ) was administered (60 mg/Kg). AU-treated group received AU mixed with standard pelleted food at a weight ratio of 1% for 2 months. Serum glucose level was measured at weeks 4 and 8. Eventually, contractile responsiveness of thoracic aortic rings to KCl and noradrenaline (NA) was evaluated .
Results: Serum glucose level, at weeks 4 and 8, in the AU-treated diabetic group was significantly lower than that in the diabetics group (p<0.01 and p<0.005, respectively). In addition, the maximum thoracic aorta contractile responsiveness to NA in the AU-treated diabetic group was significantly less than the diabetic group (p<0.05) however, such a significant reduction was not observed for KCl.
Conclusion: Oral administration of AU for 2 months is of a moderate hypoglycemic effect and attenuates the contractile responsiveness of the vascular system in diabetic rats. Background: Considering some evidence on anti-diabetic potential of Allium ursinum (AU), this study was conducted to evaluate the effect of oral administration of AU on contractile responsiveness of thoracic aorta in diabetic rats. Materials and Methods: In this experimental study, 40 male Wistar rats were divided into control, AU-treated control, diabetic, glibenclamide-treated, and AU-treated diabetic groups. For inducing diabetes, streptozotcin (STZ) was administered (60 mg/Kg). AU-treated group received AU mixed with standard pelleted food at a weight ratio of 1% for 2 months. Serum glucose level was measured at weeks 4 and 8. Eventually, contractile responsiveness of thoracic aortic rings to KCl and noradrenaline (NA) was evaluated. Results: Serum glucose level, at weeks 4 and 8, in the AU-treated diabetic group was significantly lower than that in the diabetics group (p<0.01 and p<0.005, respectively). In addition, the maximum thoracic aorta contractile responsiveness to NA in the AU-treated diabetic group was significantly less than the diabetic group (p<0.05) however, such a significant reduction was not observed for KCl. Conclusion: Oral administration of AU for 2 months is of a moderate hypoglycemic effect and attenuates the contractile responsiveness of the vascular system in diabetic rats.
Jamal Fallahty, Reza Rezaei, Saleh Astane, Fateme Marjan Mousavi,
Volume 13, Issue 3 (9-2010)
Abstract
Background: Diabetes is the sixth main cause of mortality in the world, and its both types are accompanied with eye complications in a way that the risk of blindness in diabetic patients is 25 times more than normal people. Hence, this study was conducted to determine diabetic patients’ awareness of the eye complications associated with this disease. Materials and Methods: In a cross-sectional study, 200 diabetic patients referring to the eye clinic of Amir Kabir Hospital of Arak in 2008 were evaluated. Data collection was done through questionnaire and referral interviews. Then some of the factors affecting patients’ awareness of eye complications associated with diabetes were analyzed. Results: The level of awareness of eye complications associated with diabetes in 40% of the patients was average. Also, significant relationships were observed between the level of awareness and age, job, education, type of retinopathy, type of treatment, and the history of referring to ophthalmologist (p<0.001), whereas no significant relationships were observed between the level of awareness and gender, familial history of diabetes, and controlling the diet (p>0.05). Conclusion: This study showed that a higher level of awareness in diabetic patients does not necessitate that they observe a proper diet, but it can lead to patients’ greater care in preventing the development of diabetes
Sarah Najafi, Farida Behzadian , Fatemeh Fotuhi, Jalil Fallah Mehrabadi,
Volume 15, Issue 5 (October 2012)
Abstract
Background: In recent years Influenza viruses have caused widely spread moderate to severe infection in all around the world and there is no Influenza vaccine which can protect people only with one dose injection till now. Therefore , producing a universal vaccine based on virus like particle (VLP) could be ideal. In this study one of the molecular structures was considered for VLP based Influenza vaccine. Materials and Methods: In this experimental study, the human influenza virus (A /New Caledonia 20/1999/ (H1N1)) was propagated in MDCK cell culture. Viral RNA was extracted using RNX-plus solution. Complementary DNA synthesis was carried out using uni-12 primer and random hexamer as specific and general primers, respectively. Neuraminidase open reading frame (1413-bp) was amplified by PCR and cloned into pBlue-script SK. Neuraminidase coding frame sub cloned into pFastBac11 plasmid through SalI/XhoI sites. After verification of cloned Neuraminidase by restriction analysis, it was subjected to automated sequencing bi-directionally. The recombinant pFastBac Neuraminidase vector was transformed to E.coli DH10Bac cells which harbor bacmid DNA and helper plasmid to create Neuraminidase recombinant bacmid. Results: Neuraminidase recombinant bacmid was created by homologous recombination between pFastBacNA and bacmid and was verified by PCR using Neuraminidase specific and M13 universal primers. Conclusion: Recombinant baculovirus expressing Neuraminidase gene can be also used with other individual recombinant baculoviruses expressing HA and M1 genes in production of influenza VLPs or proteins resulting from this structure could be purified in specific insects for vaccine research studies.
Davood Hekmatpou, Mohammad Sorani, Ali Asghar Farazi, Zahra Fallahi, Behnam Lashgarara,
Volume 15, Issue 7 (December 2012)
Abstract
Background: Measurement of service quality is a basic prerequisite for improving quality. Studies show that consumers are in close contact with services quality better than any other group. This study was conducted with the aim of measuring service quality based on patients’ expectations and perceptions teaching hospitals in Arak, Iran. Materials and Methods: This cross-sectional study was done on 260 patients at under auspices of Arak University of Medical Sciences. For data collection SERVQUL questionnaire was employed to measure quality of services. The reliability and validity of this questionnaire had already been confirmed by studies both in Iran and other countries. Results: The results showed that there were significant differences between patients’ expectations and perceptions in all dimensions of quality. The accessibility dimension constituted the most serious problem at hospitals. Conclusion: The negative scores show that it is necessary to promote all quality services dimensions at hospitals. For reducing the qualitative gap among all dimensions, it is recommended that hospital managers take patients’ needs into account and provide desirable services for them.
Mohammad Fallah, Amirhosin Maghsood, Amir Afrah,
Volume 15, Issue 10 (March 2013)
Abstract
Background: There are few investigations about the possibility of cyst production in human via accidental entrance of protoscoleces in ways other than cyst rupture in intestines. The objective of this study is to investigate the possibility of cyst production by cutaneous erosion, peritoneal injection, and oral inoculation in mice. Materials and Methods: In this experimental study, infected livers featuring hydatid cysts were collected from abattoir. Protoscoleces were examined for viability and lack of bacterial infection and washed 3 times by PBS. Protoscoleces were flown on the scratched skin, injected peritoneally, and inoculated orally to three groups (n=15) of mice. After 4 months, the mice were dissected and their skin and visceral were subjected to microscopic analysis. ELISA test for hydatidosis was also run for all of the groups. Results: All the mice were negative by ELISA test except the mice of peritoneum injection group which were positive with an average titer of 11.92±0.80 by ELISA. Only two mice had cysts on the peritoneum in the peritoneal injection (PI) group with an average size of 3mm. Cysts, however, were not observed in the other groups. Conclusion: The results of this study indicate that protoscoleces flow over scratched skin and oral inoculation do not produce hydatid cyst however, peritoneal implant of protoscolex can result in hydatidosis in mice.
Amir Hossein Hosseini, Leila Kohan, Sara Fallahi,
Volume 18, Issue 8 (11-2015)
Abstract
Background: Obesity is a complex, multifaceted disease resulting from a combination of genetic, environmental, and lifestyle backgrounds, and is associated with increased risk of diseases, such as hypertension, dyslipidemia, and type 2 diabetes. MiRNAs have been reported to be associated with chronic diseases such as obesity. The present study is the first investigation that examines the possible association of rs2910164 polymorphism in mir-146a gene with overweight and obesity in Iranian women.
Materials and Methods: This case-control study was conducted on 133 overweight, 75 obese and 173 healthy control women with normal weight. The rs2910164 polymorphism genotypes of mir-146a gene were determined by the Tetra-ARMS PCR method. Also, logistic regression analysis was used to estimate the association between genotypes and obesity risk.
Results: There was a significant association between GC (OR: 1.8, 95%CI: 1-3.3, p: 0.04) and CC (OR: 4.5, 95%CI: 1.6-12.6, p: 0.004) genotypes with susceptibility to obesity. In the dominant genetic model of the C allele (comparison between CC+GC vs. GG), CC+GC genotypes were associated with the risk of obesity (OR = 2.1, 95% CI: 1.2–3.7, p= 0.01).
Conclusion: This study showed that mir-146a gene rs2910164 polymorphism is associated with obesity risk and the C allele may act as a dominant allele and increase the obesity risk in Iranian women.
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Fariba Feyzi, Shirin Moradkhani, Mohammad Matini, Fatemeh Parandin, Arastoo Roshan, Mohammad Fallah,
Volume 18, Issue 8 (11-2015)
Abstract
Background: Hydatidosis is one of the dengerous zoonotic diseases that cause serious problems for human health, as well as major economic losses for livestock industry. Due to the nature of the parasite life cycle and also the structure of the cyst in human, the control of parasite in community is difficult and its treatment has faced with a major challenge. One of these challenges is inactivating the protoscolices for treatment purposes and preventing secondary cysts. Different chemicals have been used in the treatment of cyst that most of them had serious side effects for the patient. The aim of this study was investigating the scolicidal effects of some herbal extracts in vitro.
Materials and Methods: Liver hydatid cysts were collected from slaughterhouse the cysts fluid containing live protoscolex was aspirated aseptically and stored at 4°C until use. Three concentrations (25, 50 and 100 mg per ml) of each extract (ginger and artemisia) prepared and protoscoleces placed into incubator at 37oC. The viability of the protoscoleces was determined by eosin staining method at the times 5, 10, 25, 40 and 60 minutes.
Results: The methanolic extract of ginger at the concentration of 100 mg/ml leads to kill all of protoscoleces at 40 minutes. While the artemisia extract in none of investigated concentrations had not much effect on the protoscoleces.
Conclusion: The study of animal models and complementary tests showed that methanolic extract of ginger can be used as an effective protoscolex for it has high activity.
Ali Yaghoubi, Marziyeh Saghebjoo, Zia Fallah Mohammadi, Mehdi Hedayati, Akbar Hajizadeh Moghaddam,
Volume 18, Issue 11 (2-2016)
Abstract
Background: The Amyloid beta (Aβ) level increases in the brain of patients with Alzheimer's disease. The present study aimed to investigate the effects of eight weeks continuous training with low and high intensities on Aβ1-42 levels in hippocampus of Alzheimer model rats.
Materials and Methods: Fifty male Wistar rats (12 weeks old and mean weight 219.82±13.10 g) were divided into five groups including: healthy control, Alzheimer’s control, Alzheimer's low-intensity training, Alzheimer's high-intensity training and sham. To induce Alzheimer's disease, homocysteine is infused into the rats cerebroventricular (dose of 0.6M). Low intensity groups trained with 20m/min (50-55% VO2max) and high-intensity groups trained with 27m/min (75-80% VO2max), 60min/day, and five days per week on the treadmill. For data analysis, one-way ANOVA and post hoc Tukey test were performed (p<0.05).
Results: The Aβ1-42 levels in hippocampus of Alzheimer's control group was significantly higher than healthy control group (p=0.001) and in training groups with both low and high intensity was significantly lower than Alzheimer's control group (p=0.02). But no significant differences were found between two intensity (p=0.99).
Conclusion: It seems that continuous exercise training, through reducing the level of Aβ1-42 in hippocampus, can be useful for Alzheimer’s disease model rats and continuous training can be studied as a complementary therapy in Alzheimer's disease.
Firoozeh Raeisi, Habibollah Ghassemzadeh, Narges Karamghadiri, Reihaneh Firoozikhojastefar, Alipasha Meysami, Abbas Ali Nasehi, Maryam Sorayani, Jalil Fallah, Narges Ebrahimkhani,
Volume 19, Issue 4 (7-2016)
Abstract
Background: Considering the high prevalence of sexual dysfunction in females with OCD and its impact on marital satisfaction, the purpose of this study was to investigate the relationship between sexual function and marital satisfaction in a group of female OCD patients.
Materials and Methods: In this cross-sectional study, 36 females with OCD, referred to the clinic of Roozbeh Psychiatric Hospital (related to Tehran University of Medical Sciences) and 3 private offices in Tehran, were selected by random sampling and completed questionnaires including: demographic FSFI, BDI-II, MOCI, OCI-R and researcher-developed marital satisfaction questionnaire.
Results: 80.6% of women reported sexual dysfunction. The results of studying sexual function questionnaire subscales was as following: 50 % low sexual desire, 58.3 % low sexual arousal, 36.1 % decreased lubrication, 44 % orgasmic disorder, 52.8 % sexual pain disorder and 41.7 % sexual dissatisfaction. Furthermore, statistically significant correlation was found between sexual dysfunction (total score and arousal, lubrication, pain and satisfaction subscales) and marital dissatisfaction. Studying the relation between obession(MOCI questionnaire) and marital satisfaction revealed that the correlation between washing subscale of MOCI and marital dissatisfaction was also significant while there were not any significant correlation between obsession (OCJ-R, MOCI) and sexual function (FSFI).
Conclusion: High prevalence of sexual dysfunction in OCD patients, significant relationship between obsession and marital satisfaction, and sexual function and marital satisfaction could demonstrate relationship between sexual function, OCD and marital satisfaction.
Majid Kermani, Mohsen Dowlati, Sevda Fallah Jokandan, Mina Aghaei, Farshad Bahrami Asl, Sima Karimzadeh,
Volume 19, Issue 12 (3-2017)
Abstract
Abstract
Background: Poor air quality has a lot of damage on the environment and humans. Awareness of the air quality situation reduces health effects of air pollution. This study was performed with the aim of the comparative investigation of Air Quality Health Index (AQHI) and its application in seven major cities of Iran in 2011.
Materials and Methods: This study was a descriptive–analytic one. First, the required data of four criteria pollutants were taken from Department of Environment in seven major cities of Iran. The data were validated by the World Health Organization criteria. The air quality health index was measured based on the instructions and classified into low, medium, high and very high degrees according to the air quality standard tables.
Results: The results demonstrate that according to air quality health index, the level of air pollution in seven major cities of Iran has been undesirable and air quality has exceeded the standard level in Ahvaz 85%, Arak73%, Tehran70%, Esfahan60%, Shiraz 47%, Tabriz 43% and, Mashhad 29% of days.
Conclusion: Due to poor air quality and health consequences resulting from it, importance of Air Quality Health Index is explored in planning to control and reduce air pollution and awareness of peoples from daily status of air quality and its health effects.
Mohammad Matini, Samira Bakhtiarnejad, Dara Dastan, Amir Hossein Maghsood, Mohammad Fallah,
Volume 20, Issue 6 (9-2017)
Abstract
Abstract
Background: Trichomoniasis is one of the most common non viral sexually transmitted diseases worldwide. The aim of this study was to investigate the effect of Plantago lanceolata extracts on Trichomonas vaginalis.
Materials and Methods: In this study, after collection and drying of P. lanceolata, n-hexanic, ethyl acetate, methanol and hydroalcoholic extracts, they were prepared by maceration. Five clinical T. vaginalis isoleates subjected to extract suscebtibility testing, in comparison of metronidazole. Minimum inhibitory concentration (MIC) and minimum lethal concentration (MLC) tests were carried out in duplicate and repeated two times for each T. vaginalis isolate.
Results: The results showed that the extracts of P. lanceolata had potent antitrichomonal activity. The most antitrichomonal activity was related to ethyl acetate extract with the least MIC of 500 µg/ml and mean of 1525 µg/ml, after 48 hrs incubation. And also, the lowest antitrichomonal activity was related to hydroalcoholic and methanolic extract with the least and mean MIC of 2000 µg/ml. The results of MLC and MIC tests were identical and this finding confirmed the trichomonacidal activity of the extracts. The drug suscebtibility testing showed that the T. vaginalis isoleates were susceptibale to metronidazole ranging from 3.1 to 6.2 µg/ml with a mean and standard deviation of 4.2 ± 1.5 µg/ml.
Conclusion: This study showed that the extracts of P. lanceolata hav e a considerable activity on T. vaginalis parasite. Hence, further studies are needed to clear more details of antimicrobial properties of P. lanceolata compounds.
Mahsa Kavousi, Ehsan Rahimi, Jalil Fallah Mehrabadi,
Volume 22, Issue 2 (6-2019)
Abstract
Background and Aim: Lung cancer is one of the most contagious cancers in all of the world. Recently, several potential oncogenes and carcinogens have been identified, including EGFR, BRAF, KRAS and ALK genes. With due attention to the high prevalence of lung cancer, its death rate, the complications of chemotherapy and the efforts to find effective and less effective drugs, this study was done to investigate the effect of a plant extract so that results are available to manufacturing centers.
Materials and Methods: In this study, the effect of Eucalyptus extract and cisplatin on the expression of KRAS gene in A549 lung cancer cell line was investigated. To determine the cell survival, MTT was used and IC50 was determined. After determining IC50, the cells were exposed to less than IC50 concentrations of the extract and drug for 48 hours. Then, the amount of β-ACTIN and KRAS genes expressions in control and extract treated and drug treated groups were determined. For this purpose, a specific primers were designed for β- ACTIN and KRAS, and Real-Time PCR was be done.
Ethical Considerations: This study with research ethics code IR.IAU.East Tehran.REC.1396.3 has been approved by research ethics committee at Islamic Azad University, Tehran- East Branch, Iran.
Findings: The results showed that the amount of IC50 of the extract and drug was 8.75 and 1.77 mg/ml, respectively. In addition, the expression of genes in control and treated cells with extract and drug was compared. The expression of the KRAS gene relative to the reference gene in the cancer cell line treated with extract and drug, for 48 hours, was significantly decreased 2.89 and 9.25, respectively (p = 0).
Conclusion: Regarding the reduction of the relative gene expression in the A549 treated group, future studies on targeted lung cancer treatment can be promising and the potential for the use of plant compounds is more evident.
Ramin Fallahzadeh, Kasra Esfahani, Abbas Akhavan Sepahi, Nasrin Kamali, Bijan Bambai,
Volume 22, Issue 5 (11-2019)
Abstract
Background and Aim The flavin reductase DszD enzyme is a key enzyme for providing required reduction potential in the bacterial desulfurization process. Considering the low speed of desulfurization process because of low catalytic power of this enzyme, it is necessary to increase the catalytic power of flavin reductase for industrial use of this enzyme as biocatalyst.
Methods & Materials The three-dimensional structure of the flavin reductase DszD enzyme was predicted by a CPHmodel server and its amino acid sequence was searched in the protein data bank to identify the homologue molecules. Based on the alignment of the amino acid sequence and the model molecules, the key residues at the flavin mononucleotide substrate were identified. The key residue of asparagine at position 77 was replaced with phenylalanine using the site-directed mutagenesis method.
Ethical Considerations This study with research ethics code IR.NIGEB.EC.1398.6.24 A has been approved by research ethics committee at National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
Results The cloning and expression of each of the wild-type and mutant genes were performed separately. The catalytic power of the produced wild-type and mutant enzymes were compared. The catalytic activity measurements showed that the mutant enzyme had a 2.5 fold increase in catalytic power.
Conclusion Replacing phenylalanine with asparagine at position 77 of flavin reductase DszD enzyme leads to an increase in enzyme catalytic power to increase the speed of bacterial desulfurization process.
Dr Mehdi Asghari, Dr Gholamabbas Fallah Ghalhari, Dr Marzieh Abbasinia, Dr Farbod Ebadifard Azar, Dr Fahimeh Shakeri, Dr Mohammad Javad Ghanadzade, Mr Gholam Heidar Teimori, Dr Sanaz Karpasand, Dr Hossein Safari,
Volume 26, Issue 3 (August & September 2023)
Abstract
Introduction: One of the biggest environmental challenges of the 21st century is the phenomenon of climate change and global warming, which can cause numerous health problems. One significant health issue associated with climate change is the increase in the prevalence of heat stress, particularly in occupational encounters in hot outdoor environments. So this study aimed to predict and model temperature and humidity indices in the coming decades in a dry climate.
Methods: This study obtained daily atmospheric parameters, including minimum temperature, maximum temperature, and relative humidity of Kerman station, representing a dry climate, for a period of 30 years (1965 to 2005) from the meteorological organization. Modeling of these parameters and calculation of the Temperature and Humidity Index (THI) were performed using the atmospheric general circulation model HadGEM2-ES and the CORDEX dynamic microscaler model. Three different radiative forcing scenarios, including optimistic (RCP 2.6), intermediate (RCP 4.5), and pessimistic (RCP 8.5), were considered for the coming decades (three 30-year periods from 2011 to 2099). The Ethics Committe of Iran University of Medical Sciences (IUMS) approved the present study (Code: IR.IUMS.REC.1400.020).
Results: The results of the study showed an increasing trend for minimum and maximum temperature parameters in all three time periods using the three scenarios considered. Moreover, the increase in temperature in the decades of 2099-2071 was more pronounced compared to the previous decades. The results also demonstrated an increasing trend in the THI index based on all three scenarios. The average results obtained using these scenarios showed an increase of 2.11, 2.53, and 3.3 degrees Celsius, respectively, in this index until the end of the last century compared to the base decades.
Conclusions: Overall, the increase in temperature and the investigated THI index in the studied station, based on all three scenarios, will lead to changes in thermal comfort. Higher levels of thermal discomfort will not only occur in hot months and seasons but also in other seasons. Therefore, proper planning should be implemented to address the adverse effects of climate change on people's health.
