Showing 7 results for Roghani
Mehrdad Roghani, Torandokht Baluch Nejad Mojarad ,
Volume 7, Issue 4 (Winter 2004)
Abstract
Introduction: Experimental animals like diabetes rats display an augmented nociceptive response to chemical, mechanical and thermal stimuli in long term. Furthermore, hyperalgesia is one of the major symptoms of diabetic neuropathy in some patients. Considering the antidiabetic potential of chard, this study was carried out to evaluate the possible analgesic effect of chard-mixed food intake in male streptozotocin-induced diabetic rats.
Materials and Methods: In this study rats were randomly divided into control, chard-treated control, salicylate-treated control, diabetic, and chard-treated diabetic groups. At the end of experiment, nociceptive response was evaluated in both acute and chronic phases of the standard formalin test based on a four level scale.
Results: Results showed that there was a significant increase in the number of pain scores in both acute and chronic phases in diabetic rats, and administration of chard for one month did not significantly reduce the pain scores in both phases of the test. Meanwhile, sodium salicylate as positive control, only reduced this score in the second phase.
Conclusion: It can be concluded that oral administration of chard for one month despite of its antidiabetic potential could not significantly reduce the nociceptive responses in diabetic rats.
Mehrdad Roghani, Tourandokht Balouchnejad, Samira Yadegari, Rouholah Miri,
Volume 9, Issue 3 (9-2006)
Abstract
Introduction: Considering the increasing incidence of atherosclerosis and cardiovascular disorders in diabetes mellitus, this study was conducted to evaluate the beneficial effect of two-month administration of Plantago Psyllium (PP) seed on the contractile reactivity of isolated aorta in diabetic rats. Materials and Methods: In this experimental study, 32 male Wistar rats were randomly divided into four control, PP-treated control, diabetic and PP-treated diabetic groups. To induce diabetes, Streptozotcin (STZ) was intraperitoneally administered (60mg/Kg). PP-treated groups received PP mixed with standard pelleted food at a weight ratio of 6.25%. After 2 months, contractile reactivity of thoracic aortic rings to KCl and Noreadrenaline were determined using isolated tissue setup. Data was analyzed using ANOVA and Tukey tests. Results: Serum glucose level showed a significant increase in diabetic group after one and two months (p<0.001), but it,s decrease in PP-treated diabetic group was not significant in comparison to diabetic group. Also PP-treated diabetic group showed a lower contraction to KCl (p<0.05) and noreadrenaline (p<0.01) as compared to diabetic group. Meanwhile, there was no significant difference between control and PP-treated control groups regarding contractile reactivity. Conclusion: It can be concluded that oral administration of PP for 2 months can decrease the contractile responsiveness of vascular system and this may prevent the development of hypertension in diabetic rats.
Mehrdad Roghani, Tourandokht Balouchnejad, Maryam Falahmohamadi,
Volume 10, Issue 2 (6-2007)
Abstract
Introduction: Use of medicinal plants for decreasing blood glucose and lipids to normal level is clinically important. In this respect, Silybum marianum (SM) is a plant that can lower lipid peroxidation and lipids in an experimental model of hyperlipidemia. Therefore, the effect of chronic oral administration of this plant on serum glucose, triglyceride, total cholesterol, and HDL and LDL cholesterol level of diabetic rats was investigated. Materials and Methods: In this experimental study, female rats (n=36) were randomly divided into 4 groups, including control, SM-treated control, diabetic, and SM-treated diabetic groups. The treatment groups received oral administration of plant-mixed pelleted food (6.25%) for 4 weeks. Serum glucose, triglyceride, total cholesterol, LDL and HDL cholesterol levels were determined before the intervention, and at 2nd and 4th weeks after the intervention. Data was analyzed using repeated measure ANOVA, One way ANOVA, student and pairt T and Tukey tests. Results: Serum glucose level in diabetic group was increased in seond and 4th weeks after the intervention as compared to one week before that (p<0.001) and SM treated diabetic rats only had a mild non-significant effect. In addition, triglyceride level in diabetic group increased 4 weeks after the intervention in comparison to related data one week before that (p<0.05) and there was a significant lower level of triglyceride in SM-treated diabetic rats (p<0.05). Furthermore, a similar significant reduction was obtained for treated-diabetic group as compared to diabetic group regarding serum cholesterol level (p<0.05). On the other hand, HDL- and LDL- cholesterol levels were significantly higher (p<0.05) and lower (p<0.05) in SM-treated diabetic group as compared to untreated diabetic group respectively. Conclusion: Oral chronic administration of SM had no significant hypoglycemic effect and led to appropriate changes in blood lipid profile.
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.
Fatemeh Shayesteh, Effat Farrokhi, Manochehr Shirani, Mehrdad Modarresi, Farshad Roghani, Morteza Hashemzadeh,
Volume 13, Issue 4 (1-2011)
Abstract
Background: Familial hypercholesterolemia (FH) is a disorder with autosomal dominant pattern caused mainly by mutations in the low-density lipoprotein receptor (LDLR) and apolipoprotein B-100. The aim of this study was to investigate the frequency and type of LDLR gene mutations in an Iranian population of patients with high blood cholesterol. Materials and Methods: In this descriptive-lab based study, a total of 50 non-related possible FH subjects from Cheharmahal Bakhtiari were studied. All subjects were tested for presence of LDLR gene mutations in 9 exons of the LDLR gene including 2, 4, 6, 7, 8, 9, 10, 12, and 14. The shifted bands were detected on electrophoresis gels and confirmed by subsequent DNA sequencing method. Results: Overall, four different polymorphisms were identified in 18% of the patients. We found 1413G>A, 1725C>T and 1773C>T, 2140+5G>A in 2,23,2 and 2 subjects respectively from which 1413G >A and 1773C>T were detected in both alleles of the gene. Conclusion: The results did not indicate the involvement of LDLR gene mutations of FH in the samples studied.
Roghani, Khalili, Baluchnejadmojarad, Heydari,
Volume 14, Issue 1 (3-2011)
Abstract
Background: Chronic diabetes mellitus is accompanied with disturbances in learning, memory, and cognitive skills. Noticing the existing evidence regarding the anti-diabetic potential of hesperetin, the effect of its chronic administration on learning and memory in diabetic rats was investigated. Materials and Methods: In this experimental study, 40 male Wistar rats were divided into control, hesperetin-treated control, diabetic, and hesperetin/glibenclamide-treated diabetic groups. For evaluation of learning and memory, initial (IL) and step-through latencies (STL) were determined at the end of the study using passive avoidance test, and the alternation behavior percentage was obtained using Y maze. Results: STL significantly decreased in the diabetic (p<0.01) and hesperetin-treated diabetic (p<0.05) groups in comparison to the control group however, the difference between these two groups was not significant. Alternation percentage in the diabetic group was significantly lower in comparison to the control group (p<0.05), but the hesperetin-treated diabetic group revealed a significant difference in comparison to the diabetic group (p<0.05). Conclusion: Although long-term treatment with hesperetin does not enhance the capability of retention and recall in diabetic animals on the passive avoidance test, it can improve the short-term spatial memory in diabetic animals.
Pooneh Roghanian, Jafar Amani, Shoreh Zare, Zahra Nour Mohammadi,
Volume 22, Issue 1 (4-2019)
Abstract
Background and Aim: Enterotoxigenic Escherichia coli (ETEC) is one of the most common bacterial causes of diarrhea deaths among children and travelers in developing countries. The ETEC colonization factors, such as CFA/I and CS2 play an important role in the development of the disease. In this study, to produce the CFaE fusion recombinant protein, the tip subunits CFA/I(CfaE) and sub structural unit of CS2 (CotD) from ETEC, were used. Since mucosal immune responses to CFs can prevent disease, the aim of this study was to develop a chimeric antigen for developing the effective vaccine.
Materials and Methods: In order to amplify the cfae-cotd gene, a dual gene construct consisting of cfae and cotd, the PCR reaction was performed by designed primers. The propagated gene was cloned in the expression vector pET28a. Following the induction of a recombinant gene construct with IPTG, the recombinant protein was expressed and purified by Ni-NTA chromatography column and confirmed by western blotting by Anti-Histag.
Ethical Considerations: This study with research ethics code IR.IAU.SRB.REC.1397.066 has been approved by research ethics committee at Islamic Azad University, Science and Research Branch of Tehran, Iran.
Findings: Cloning accuracy was confirmed by PCR and enzyme digestion reaction. The presence of the band in the SDS-PAGE 10% gel in the 68 kDa region, the expression of the recombinant protein, and the presence of the band on the nitrocellulose paper in the Western blotting test confirmed the production of recombinant protein.
Conclusion: Optimization of codon and expression in heterologous hosts is a useful method for the production of recombinant proteins. The production of ETEC antigens as a candidate for vaccination against this bacterium is also prominent.
