Showing 8 results for Jamshidi
Alireza Jamshidi Fard, J. Bagust ,
Volume 1, Issue 3 (Summer 1997)
Abstract
Wall and Shortland (1991) have shown that afferent fibres entering the cord in thoracic and lumbar roots of adult rats have branches that may penetrate up to 11 segments caudally from the root entry zone. We have investigated the extent of branching and conduction velocities of ascending and descending branches of lumbar and thoracic primary afferent in isolated spinal cords of adults hamsters (60-100g) and juvenile rats (30-46 g). Hemisected spinal cords were maintained at cold artificial cerebrospinal fluid (25-27 C) in which the Ca2+ had been replaced by Mn2+ (2mm) to block synaptic activity. Hamsters, antidromic conducted responses were obtained up to 10 segments caudal to dorsal roots T6-T7 and 17 segments rostral to L3. The mean conduction velocity was 3.7 m/s (s.e.m.& 0.4) for descending primary afferents(n=21) and 9.9 a 1.2 m/s for ascending afferents (n=26). In the rat , antidromic responses were measured over 4 segments caudal and 17 segments rostral to the L3 dorsal root. Conclusion velocities were 4.4 & 0.5 m/s and 7.7 & 0.7 m/s for descending and ascending branches respectively (n=4). The result were similar to those reported by Wall & Shortland , although the temperature. Difference between the in vitro and in vivo preparations would have resulted in approximately halving of the velocity in isolated cord preparation. The conduction velocity of descending fibres was about half fibres which may be related to size differences within the branches.
Ali Reza Jamshidifard, Simin Najafgholian, Hamid Gerami,
Volume 4, Issue 3 (Autumn 2001)
Abstract
Introduction: Intracomparemental pressure were measured by the wick catheter technique in 32 compartments of 32 post traumatic patients who were clinically suspected of having acute compartment syndromes. A pressure of zero millimeters of mercury was used as an indication for normal compartment enough for being excluded in any subject.
Material and Method: Signs and symptoms were examined in subjects based on clinical definitions before measuring intracompartmental pressures. Paresthesia, tensness, pain in passive extension, pain in active extension, paralysis, pulselessness, capillary filling and pallor of each subject were marked to be used for comparison with the value of intraucompartmental pressure.
Results: Pain were present in all subjects as the most earliest sign while the skin pallor appeared to be the latest one.The lowest values of pressure were seen together with pain and paresthesia even below the 10 mmHg among the subjects.
In our cases when ever the pressure values of the affected compartment increased. The number of present signs and symptoms also increased.
Conclusion: Positive regression of the mentioned correlation (r=0.69) implies that the value of intracompartmental pressure could be indicative of the more complications associated with more sign and symptoms.
Since different signs and symptoms were present in our subjects even with the same value of pressure. The diagnosis and apporching to compartment syndromes may looks confusing so measuring intraucompartmental pressure by a wick cartheter seems to be the cheep. Available technique in diagnosis and management of the cases.
Shima Chehreie, Ali Reza Jamshidi-Fard, Ali Haeri Rouhani,
Volume 6, Issue 1 (Spring 2003)
Abstract
Introduction: Sympathetic skin response (SSR) is a central, polysynaptic process which is attributed to sympathetic sudomotor activity. The descinding pathway presents spinal sympathetic system to sweat glands of hands and feets skin. The glands which are affected in reflex sympathetic dystrophy (RSD).
Materials and Methods: In present study, SSRs were recorded from left hands of 62 adult healthy subjects and 12 affected hands of RSD patients in relaxed, supine position at room temperature. Recording were performed by a pair of silver cup electrodes (1cm2) after stimulation of contralateral median nerve at volar aspect of wrist, all connected to a polygraph (physiograph, Narco, USA) to record at least five stimulation recording prosedure in each subject.
Results: Comparison of mean latency, amplitude, duraion and shape of responses in RSD 'patients with normal control group showed significant differences between duration and amplitudes (P=0.0007 and P=0.0001) while the latencies were not different and the shape of responses were mostly biphasic in both RSD and normal group.
Conclusion: Hyperactivities of SSRs in RSD patients are due to sudomotor changes of skin resistance, the SSR may also play a role in the quantitive evaluation of patients with suspected RSD.
Saeed Babaei, Saeed Changizi Ashtiani, Hamid Gerami, Ali Reza Jamshidifard , Mohammad Rafiee,
Volume 6, Issue 3 (Autumn 2003)
Abstract
Introduction: At present, bone graft is unavoidable. In fact although among the all probable bone grafts, the autograft is the best choice, but because of some situations like two coincidence surgery upon one individual, size limitation of autografts (its impossible to get a big piece of graft from patient) increasing the bloodshed contingency, infection etc, made specialist to think about the possible substitution the allograft.
Materials and Methods: Seventeen Newzealandian rabbits were divided into four groups. The graft generator group consisted of one rabbit which was genetically different from other groups. The sham group composed of three rabbits which round autografts about 4 mm in diameter from their tibia were exchanged between rights and left tibias. These grafts were not deantigenized and a 4 mm vacant hole was created to see if it will repair spontaneously within three months. The control group consisted of three rabbits received a round 4 mm tibial autografts which double deantigenization process were done over them. The test group composed of 10 rabbits, received corticocancellous (intramembranous) allografts in left tibia and corticocancellous (endocondral). Allograft in right tibia all grafts were bearing the double deantigenization process.
Results: The rate of prosperity for CCl grafts was 80% and for CCE grafts was 60%.In sham group, healing process was extremely fast (in eight weeks).
In control group, healing process was done slower until six weeks but after 12 weeks it was compensated. The vacant holes were not repaired even after three months. Statistically, there was a meaningless difference between the rates of prosperity in both groups of grafts.
Conclusion: According to statistical assays, although the prosperous numbers of CCl were more than CCE grafts but this difference was meaningless. In the basis of histological assessments if the velocity of healing process is important, the CCI grafts are recommended
Dr Mohammad Ali Zargar Shooshtari, Dr Abolfazl Golmohammadi, Dr Meysam Jamshidi, Dr Hormoz Salimi,
Volume 9, Issue 1 (3-2006)
Abstract
Introduction: Renal cell carcinoma can be presented with extension of thrombosis to renal vein and inferior vena cava. Management of these patients consists of radical nephrectomy and thrombectomy. In this study we reviewed approach to these patients. Materials & Methods: This is a case series report. During 1379 to 1384, 148 patients diagnosed with renal cell carcinoma (RCC) limited to Gerota’s fascia (stage T3 or less) were admitted to Hasheminejad hospital. Fourteen patients had inferior vena cava (IVC) involvement. Radical nephrectomy as well as thrombectomy was performed in 8 patients. This investigation is done on these 8 patients. Results: Patients' average age was 51.4 years. Six patients were male (75%) and 2 female (25%). The most common symptoms were flank pain (75%), gross hematuria (62.5%) and structural symptoms (50%). All patients had tumors limited to Gerota’s fascia without any distant metastasis. Infrahepatic involvement of IVC was seen in 6 patients and in 2 patients thrombosis extended above the hepatic vein (infrahepatic). No perioperative mortality was seen. Postoperative complications were atelectasia in 2 patients and deep vein thrombosis in one which was treated with conservative management. Conclusion:By skillful surgical approach in patients with RCC and IVC involvement, thrombosis can be completely excised without increasing the rate of complications and longterm survival could be expected.
Majid Najafi Kalyani, Shahnaz Karimi, Nahidi Jamshidi,
Volume 12, Issue 4 (Research in Education Supplement 2010)
Abstract
Abstract Background: The important reality is that all of human developments and successes are due to learning. Knowing students learning styles will help to produce an educational plan in order to optimal and effective learning. The aim of this study was the comparison of learning styles and preferred teaching methods of different students of medical sciences. Materials and Methods: This study is a cross-sectional research. That was done on all students at Fasa Medical Sciences University in 2009. For data gathering, questionnaires of demographic variables and Kolb Learning Style Inventory (KLSI) was used and analyzed. Results: Majority of students learning style was convergent learning (38.3%) and then assimilator learning style (29.9%). More frequent preferred teaching method was group discussion. There was a significant difference between learning styles and course of students (P=0.011). Conclusion: Since, the majority of students had convergent and assimilator learning styles is recommended, considering the diversity of learning styles, educational methods related ro learning styles were using.
Alireza Jamshidi Fard, Haleh Rafipour, Fardin Faraji,
Volume 16, Issue 5 (8-2013)
Abstract
Background: Several clinical studies suggest that melatonin is a neuroprotective molecule in neurodegenerative disorders and it showed to be reduced in Multiple Sclerosis (MS) patients. MS also results in blurred vision, papillitis and diplopia. The main objective of the study was to asses the influence of Melatonin supplimentation on visual characteristics in patients with MS.
Materials and Methods: In a Quasi Experimental plan, approved by AUMS ethical Committee, 34 (9 males and 25 females) patients with stable MS were asked to voluntearly participate in the study. All subjects (Mean EDSS 3.14) were taking their routine medications. Visual funtions were evaluated by Visual Functioning Questionnaire (VFO-25) and standard Pattern Reversal Visual Evoked Potentials (PR-VEP) records. Serum Melatonin levels were also measured using an ELISA assay. Recordings were performed after a single dose and after taking 1 tablet every night for 14 days, at the day 16th.
Results: In all subjects, Serum Melatonin levels were significantly enhanced. VFQ scores also showed significat improvement. Except the change in N75 latencies of left eyes, VEP latencies of P100, N145 of both eyes and N75 of right eyes were significantly (p<0.05) reduced.
Conclusion: Our findings suggest significat improvements of visual symptoms of MS after daily intake of 3 mg Melatonin. The results calls for further studies and clinical trails before asking all MS patients to take Melatonin suppliment every night.
Mehri Jamilian, Jamilian Somayeh Jamshidi,
Volume 20, Issue 10 (1-2018)
Abstract
Abstract
Background: Selenium supplement has multiple important effects, including anti-inflammatory effect. The aim of this study was to assess the effects of selenium supplement on gene expression of inflammatory cytokines and vascular endothelial growth factor in gestational diabetes.
Materials and Methods: This randomized double blind placebo control trial was performed on 40 patients suffering from GDM aged 18–40 years old. Participants were randomly divided into interventional group receiving 200mg/day selenium supplements (n=20) and control group receiving placebo (n=20) for 6 weeks. Primary outcome was gene expression of inflammatory cytokines and VEGF which were assessed in lymphocyte of GDM patients by RT-PCR method.
Results: After 6 weeks intervention, in comparison with the control group, interventional group showed down regulation of gene expression of tumor necrosis factor alpha (TNF–α) (p=0.02) and transforming growth factor beta (TGF–β) (p=0.01) and up-regulation of gene expression of vascular endothelial (VEGF) (p = 0.03) in lymphocytes of GDM. There was not any significant change following intervention with selenium regarding gene expression of interleukin IL-1 β and IL-8 in lymphocytes of GDM patients.
Conclusion: 6 weeks supplementation with selenium in patients with GDM can cause down regulated gene expression of TNF-α and TGF–β, and up regulated gene expression of VEGF. Selenium supplement had not any effect on gene expression of IL-1 β and IL-8.
