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Search Results: 1 - 10 of 2000 matches for " Mohamad Taheri Mahmodi "
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A Comparison between Clinical and Pathologic Staging in Patients with Bladder Cancer
Abdolrasoul Mehrsai,Daryosh Mansoori,Mohamad Taheri Mahmodi,Alireza Sina
Urology Journal , 2004,
Abstract: Purpose: To determine the accuracy of clinical staging methods of bladder cancer and TURBT results in estimating the pathologic stage of tumor. Materials and Methods: Thirty two patients who had undergone radical cystectomy were studied in this retrospective survey. The results of bimanual examination, cystoscopy, TURBT pathology report and the tumor contour in CT scan, (size, infiltrative deepness, pelvic lymph nodes involvement and hydronephrosis) were recorded. The type of surgery and pathologic report of cystectomy sample were analyzed as well. Then the results of bimanual examination, tumor size, hydronephrosis and CT scan findings including tumor infiltrative deepness, pelvic lymph adenopathy and TURBT findings were compared to pathologic results of cystectomy sample. Results: Seven patients were females and 25 were males. Their mean age was 62 (range 36 to 80) years. Gross hematuria and irritative urinary symptoms were the most common complaints. The duration between symptom manifestation and patient’s referral was 5 days to 72 months (mean 12 months). Bimanual examination in estimating the extravesical involvement of tumor had a specificity of 82%, sensitivity of 46%, positive predictive value of 70% and negative predictive value of 63%. The size of tumor in determining extravesical involvement had a specificity of 41%, sensitivity of 93%, and positive predictive value of 58% and negative predictive value of 87%. Hydronephrosis was present in 15 patients of whom, 14 (93%) had bladder muscle involvement. CT scan specificity was 70%, and sensitivity was 46% regarding pelvic lymph adenopathy and perivesical fat involvement. In TURBT report no muscle sample was observed in 11 cases, so that the interpretations of results were impossible. The reported grade of tumor was lower than pathologic sample of cystectomy in 4 patients. Conclusion: Clinical staging in invasive bladder cancers has not high accuracy regarding the involvement of bladder surrounding fats and pelvic adenopathies. A tumor sized more than 5 cm could be sensitive in estimating extravesical involvement. Positive predictive value of hydronephrosis is considerable regarding bladder muscle involvement. Tumor understaging by TURBT is happened in high percentage of patients with invasive bladder cancer.
Study of fusion cross-sections of 16O + 208Pb and 28Si + 208Pb reactions by effective soft-core nucleon-nucleon interaction
Ghodsi Omid N.,Mahmodi Mohamad,Ariai Jamil
Nuclear Technology and Radiation Protection , 2007, DOI: 10.2298/ntrp0701011g
Abstract: In this paper, the cross-sections of fusion reactions 16O + 208Pb, 28Si + 208Pb, 40C + + 40Ca, 40Ca + 48Ca, 58Ni + 58Ni, and 16O + 154Sm at bombarding energies above and near the fusion barrier have been investigated. The fusion cross-sections have been studied by means of the Monte Carlo method and effective soft-core nucleon-nucleon interaction. One adjustable parameter was used in these calculations. This parameter can change the strength and repulsive parts of soft-core potential values. It has to be adjusted, so that the analytical results are in acceptable agreement with the experimental data. In our calculations, we have taken the range of the nucleon-nucleon soft-core interaction to be constant and equal to that of the M3Y-Raid potential. Results show that the higher values for the diffusion parameter in the Woods-Saxon potential obtained from a careful analysis of 16O + 208Pb and 28Si + 208Pb reactions are due to the many particle effects on the nucleon-nucleon potential.
Isolation and Purification of Low Molecular Weight Proteins from Liquid Culture for Mycobacterium Tuberculosis by Chromatography
Davoud Sadeghi,Nader Mosavari,Behnam Rafiee,Mohamad Mohamad-Taheri
Zahedan Journal of Research in Medical Sciences , 2013,
Abstract: Background: Tuberculosis (TB) is a disease caused by a bacterium called Mycobacterium tuberculosis. M. tuberculosis has different molecular weight secreted antigens. Low molecular weight proteins secreted into the culture medium by M. tuberculosis are thought to play an important role in the development new TB diagnostic tests and new vaccines against tuberculosis. In this report, we describe isolation and purification of low-molecular-weight proteins secreted by M. tuberculosis.Materials and Methods: Initially by biphasic medium, bacteria from Lowenstein-Jensen solid medium transferred to a Dorset-Henley liquid medium and After 6 weeks of growth, the bacteria with a 0.22 micron filters of liquid medium containing secreted proteins were isolated and the secreted proteins was precipitated by ammonium sulfate. Protein concentrations were determined by using the lowry protein assay. Then low molecular weight proteins were purified by Sephadex-G75 gel chromatography and we studied purification of low molecular weight proteins by Coomassie-Blue stained SDS-PAGE.Results: The results showed that low molecular weight secreted proteins purified from M. tuberculosis strain DT. Also, low molecular weight proteins made up approximately 65.3% of total proteins.Conclusion: this study demonstrated that without break down of bacteria bodies can be purified low molecular weight secreted proteins from M. tuberculosis liquid medium by Sephadex-G75 gel chromatography.
Investigation of the adjoint method in aerodynamic optimization using various shape parameterization techniques
Tashnizi, Ebrahim Sharifi;Taheri, Azadeh Akhavan;Hekmat, Mohamad Hamed;
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2010, DOI: 10.1590/S1678-58782010000200012
Abstract: this paper studies the effect of design variables vector on automatic aerodynamic shape optimization in the adjoint method. three shape techniques are studied: surface points, relations of the naca 4-digit airfoil series and hicks-henne "bump" functions. first, this paper presents the complete formulation of the optimal design problem for the euler equations. second, the implementation of these surface representation methods are explored. finally, results are presented for inverse and drag minimization problems. the results show that the mechanism, value and the trend of drag reduction during the optimization strongly affected by the type of design vector.
Failed Back Surgery Syndrome
Morteza Sanei Taheri,Zahra Afravi,Hamidreza Haghighatkhah,Mohamad Hadi Kharrazi
Iranian Journal of Radiology , 2011,
Abstract: Background/Objective: Failed back surgery is now"nregarded as a syndrome. This syndrome is characterized"nby intractable pain and various degrees of functional"nincapacity following lumbosacral spinal surgery. FBSS"nconsists of many surgical and nonsurgical etiologies."nSome of these etiologies are recurrent disc herniation,"nepidural fibrosis, spondylodiscitis, radiculitis,"narachnoiditis and stenosis."nPatients and Methods: A total of 200 cases of FBSS"nwere reviewed and various diagnoses were identified."nResults: We select some interesting cases of failed back"nsurgery syndrome following spinal surgery for this"nlecture."nConclusion: FBSS consists of many surgical and"nnonsurgical etiologies; clear understanding of them"nis important for efficacious triage, patient outcome"nassessment and it also assists the surgeon if repeat"nsurgery is necessary
Common Intra Oral Radiographic Errors Made by Dental Students
Abdolaziz Haghnegahdar,Pegah Bronoosh,Mohamad Mehdi Taheri,Amin Farjood
Galen Medical Journal , 2013,
Abstract: Background: Retakes of intra oral radiographs happen frequently in dental practice although radiographic courses train dental students in consecutive semesters. To reduce the patient exposure as much as possible it is mandatory to reduce the number of retakes both in radiology clinics and educational centers.Materials and Methods: 3188 periapical radiographs taken by bisect-angle technique was evaluated in this cross-sectional study to assess the frequent errors necessitating retakes. Views were taken by fourth year dental students using bisect angle method. Errors were tabled according to site and type.Results: The four major errors that were found in the study included incorrect film placement (35.4%), cone cutting (18.2%), incorrect horizontal angulation (16.6%), and incorrect vertical angulation (14.4%). The distribution of technical errors by anatomic location was identified. Maxillary molar area was the most occurring site for errors.Conclusion: These results suggest that educational programs may be re-evaluated to make the best benefit of educational courses involving both dental and hygiene students.
The Identification of proteins present in culture filtrare of Mycobacterium tuberculosis DT and comparison with human tuberculin proteins by electrophoretic methods
SadeghiD.,Mosavari N. (PhD),Rafiee B,Mohamad Taheri M.
Medical Laboratory Journal , 2012, DOI: http://www.goums.ac.ir/mljgoums/index.php?&slct_pg_id=10&sid=1&slc_lang=en
Abstract: Background and objectives: Tuberculin is the proteins existed intuberculosis culture medium which precipitated by trichloroacetic acid (TCA)or ammonium sulfate. Tuberculin is used for diagnosis of Tuberculosis. Theaim of this study is to compare the human tuberculin produced by RaziInstitute and Mycobacterium tuberculosis Culture Filtrate Protein.Material and Methods: Initially By biphasic medium, Bacteria fromLowenstein–Jensen solid medium was transferred to a Dorset Henley Liquidmedium. After 6 weeks of growth, the bacteria were isolated from liquidmedium containing secretory proteins by the 0, 22 micron filter and thesolution containing secretory proteins was precipitated by TCA andammonium sulfate, separately. Then, using spectrophotometer and kjeldahlprotein assay, the presence of protein in solution was confirmed. At the end,the precipitated proteins are compared with the human tuberculin byCoomassie-Blue stained SDS-PAGEResults: The protein samples precipitated by TCA have more bands in thelimit of higher than 20 kDa, but the protein samples by ammonium sulfatehave more bands in the limit of less than 20 kDa. Human tuberculin proteinsare like smear and their weight is less than 16 kDa.Conclusion: It seems that ammonium sulfate is more suitable for lowmolecular weight proteins than TCA for precipitation.Key words: Mycobacterium tuberculosis, SDS-PAGE, tuberculin
Evaluation of the Management of Family Physicians Health Care Services to Diabetic Patients in Rural Areas of Northern Iran  [PDF]
Ghahraman Mahmodi, Melody Omraninava, Bahman Nikpour, Eissa Omidi Qasemabad
International Journal of Clinical Medicine (IJCM) , 2018, DOI: 10.4236/ijcm.2018.92010
Abstract: Background and Objectives: The ultimate goal of the health system is to improve the health status of people. To achieve this goal and meet the needs and expectations of people in the field of health, different strategies have been designed, one of which is the family physician. Therefore, the main aim of this study was to evaluate management and performance of the family physician in the diagnosis, treatment and prevention of diabetes in the Counties of Gilan Province. Materials and Methods: This is a cross-sectional study, which was carried out descriptively. In this study 320 patients with diabetic records were selected from among 1900 using simple random selection. Results: There is a significant difference between the number of visits, the number of referrals to specialists and the number of tests with the expected rate. In addition, 68.8% of patients were diagnosed by the family physician for the first time. According to comparisons made on the number of referrals, visits and request for blood tests, there was a significant difference between two Counties (p < 0.05). Conclusion: The results of the present study indicate that there is a fundamental weakness in terms of diagnosis, control, care of patients, referral, completion of health records and eventually preventing diabetes complications in the northern villages of Iran. In general, family physician program has relatively good performance in Iran after several years, but has not been able to reach the determined goals and standards.
Short course of cyclophosphamide therapy may reduce recurrence in patients with tubulointerstitial nephritis and uveitis syndrome
Taheri Shahram,Taheri Diana
Saudi Journal of Kidney Diseases and Transplantation , 2009,
Abstract: We report a 43-year-old woman with tubulointerstitial nephritis and uveitis syn-drome (TINU syndrome) presented with a 5-day complaint of chills and fever, anorexia, nausea, and vomiting. She had elevated BUN and creatinine and urinalysis revealed decreased concen-tration, proteinuria, hematuria, and pyuria. A kidney biopsy showed non-caseating granulomatous tubulointerstitial nephritis. She suffered from anterior uveitis one month before, which was managed with local ophthalmic steroids. She received two months of oral high dose prednisolone, which was tapered over the next two months, and two months of 2 mg/kg cyclophosphamide. Her renal function recovered during the first two months. Her kidney and ocular symptoms did not recur during one year of follow-up. We suggest short course of cyclophosphamide and prednisolone for treatment of TINU syndrome to decrease the recurrence of kidney and ocular involvement.
Ischemic Monomelic Neuropathy after a Brachio-Cephalic AVF Creation: A Case Report and Review of Literature  [PDF]
Mohamad Taha
World Journal of Cardiovascular Surgery (WJCS) , 2017, DOI: 10.4236/wjcs.2017.73004
Abstract: Ischemic monomelic neuropathy (IMN) is an under-diagnosed and disabling complication of upper extremity hemodialysis access. The hemodynamic disturbance that occurs during the time of access creation can lead to both neurologic and ischemic complications. These complications are most commonly seen following proximal procedures involving the upper limbs. Diagnosis and treatment are often delayed, and even with early intervention, neurologic dysfunction may be irreversible. IMN can lead to significant long-term disability. Almost all cases of IMN occur with brachial artery-based access, procedures and the vast majority of patients are diabetic and females. I report a case of IMN after left BC AVF operation which was treated successfully by early access ligation, providing a review of the literature.
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