Showing 4 results for Mohajerani
Hamidreza Mohajerani ,
Volume 2, Issue 9 (Winter 1999)
Abstract
Sodium, potassium pump is a plasma membrane enzyme. It is almost in all of the animal cells. Because of this ubiquitous distribution and situation of this pump as a digitalis receptor, cardiac glycosides can effect not only myocardial function, but also many of the cell processes in other tissues. This matter evoke the question of how cardiac glycosides have selective function without disturbance of function of the other body cells? A part of the answer of this question is relate to diversity of digitalis receptor in molecular level . Therefore a clear definition of relative selectivity of the cardiac glycosides is the presence of difference isoforms of sodium pump with low affinity. If the drug dose increases, side effects will appear. Therefore the final aim might be the design of drugs that only affect on isoform of the heart.
Amad Reza Mohajerani, Negin Moshtaghi, Alireza Susanabadi,
Volume 8, Issue 3 (1-2006)
Abstract
Introduction: One of the most important skills which should be learned and performed by physicians and nurses is the correct method of intubation. Therefore, more attention should be given to such trainings. The main purpose of the recent study is manufacturing and utilization of a detector device for correct intubation which can be used by inexpert staff who are not members of anesthesia team.
Materials and Methods: In a quasi experimental study a detector device was manufactured and utilized for correct intubation. In this research 400 patients undergone surgery, had been chosen for testing the device. Their ages varied from 5-75 years old and they had no chronic obstructive pulmonary disease (COPD), asthma and heart disease. These patients have been generally anesthetized. In all patients the tracheal tube has been placed in esophagus and then immediately in trachea, using the device. The sensitivity of device was evaluated. During the procedure patients, oxygenation was not disturbed.
Results: All 400 intubations were performed succesfuly using the device. In this study using air flow out of lungs, intubation was done successfuly. So the devices, sensitivity was 100%. By a professional the mean time for intubation using this device was 5 seconds, and it,s price was 1000 Rials.
Conclusion: Regarding the results, it seems the device is useful in emergencies and facilitates intubation. This device is cheap and portable and seems to be more useful than other reported devices in determining correctiveness of intratracheal intubation.
Reza Mohajerani, Mohammad Reza Palizvan, Shahrbanou Oryan, Vahab Babapour,
Volume 11, Issue 1 (3-2008)
Abstract
Introduction: In this study the effect of extracellular trans zinc and voltage sensitive calcium channels on different aspects of learning and memory has been investigated. Materials and Methods: This is an experimental study in which the effect of a calcium channel antagonist (Verapamil) and zinc chelator (Ca-EDTA), on passive avoidance learning (shuttle box apparatus) has been examined by intraperitoneal administration of defferent doses of these drugs. Data was analyzed using one way analysis of variance. Results: Result of intraperitoneal injection of 100 milimolar Ca-EDTA indicated that it has no effect on the acquisition, consolidation, and retrieval of passive avoidance learning. Verapamil (100 and 150 micrograms) as a L-type voltage gated calcium channel antagonist, decreased acquisition and consolidation but not retrieval of passive avoidance behaviour. These effects were dose dependent. The simltaneous effect of Ca-EDTA and verapamil was also studied. Ca-EDTA (100milimolar) and verapamil (100 micrograms) have negative effects on consolidation of passive avoidance learning. Conclusion: Probably, common mechanisms are involved in acquisition and consolidation of passive avoidance learning, and zinc and calium ions play interactive roles in this aspect.
Saeed Tahmasebi, Sharbanoo Oryan, Hamid Reza Mohajerani, Neda Akbari, Mohammad Reza Palizvan,
Volume 23, Issue 3 (August & September 2020)
Abstract
Background and Aim: Epilepsy is a common brain disorder. Brain function can be affected by the intestinal microflora. The intestinal microflora have a major role in modulating immune responses, producing essential metabolites and mediating neurotransmitters. Antibiotics can affect and reduce these roles and functions by eliminating the intestinal microflora. The aim of this study was to investigate the effect of intestinal natural micro flora removal on seizure susceptibility and seizure behavior modification with the use of probiotics in male Wistar rats.
Methods & Materials: This study was performed on 32 male Wistar rats with weight range 200-250 gr. The animals were randomly divided into four groups: 1. Control group; 2. Antibiotic group; 3. Probiotic group and 4. Antibiotic + probiotic group. To remove the microflora, antibiotics (neomycin, ampicillin, and metronidazole) for three weeks and for replacement of microflora, probiotics (Lactobacilli casei, Lactobacillus acidophilus and Bifidobacterium bifidum) for four weeks were administered. Seizures were performed by intraperitoneal injection of pentylentrazole. The microflora was examined by the MRS Agar medium and the Pure Plate method. The data were statistically analyzed in Graph Pad Prism V. 8.
Ethical Considerations: This study was approved by the Research Ethics Committee of Arak University of Medical Sciences (Code: IR.ARAKMU.REC.1395.176).
Results: The use of antibiotics lead to decrease the number of intestinal bacteria (P<0.0001), increased the severity and stability of seizure stages (P<0.05) and decreased the time delay of seizure onset (P<0.05) compared to the control group. Probiotic consumption by modifying the intestinal microflora (P<0.0001) reduced the severity of seizure and increased the time delay of seizure onset (P<0.05).
Conclusion: Elimination of microflora has the potential to induce seizures, which can be compensated by administration of probiotics.
