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Enferadi M, Sadeghi M, Nadi H. 72As, a powerful positron emitter for immunoimaging and receptor mapping: Study of the cyclotron production. Radiochemistry 2011. [DOI: 10.1134/s1066362211040138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Poorkiani M, Abbaszadeh A, Hazrati M, Jafari P, Sadeghi M, Mohammadianpanah M. The effect of rehabilitation on quality of life in female breast cancer survivors in Iran. Indian J Med Paediatr Oncol 2011; 31:105-9. [PMID: 21584214 PMCID: PMC3089917 DOI: 10.4103/0971-5851.76190] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: The purpose of this study was to compare the quality of life (Qol) of female breast cancer survivors who received rehabilitation intervention beside medical care and survivors who received medical care alone. Materials and Methods: Fifty-seven female breast cancer survivors were assigned to usual medical care (control group) or to usual medical care plus rehabilitation intervention (experimental group). Qol of all patients was assessed before, 1 week and 3 months after intervention. The intervention consisted of physiotherapy, education and individual counseling. The authors used the European Organization for Research and Treatment of Cancer core questionnaire and breast module (EORTC QLQ-C30/BR23) for the assessment of Qol. Results: Patients who received rehabilitation had significantly better Qol. Overall, mean of Qol scores improved gradually in experimental group from before to 1 week and 3 months after intervention. In contrast, minimal change was observed between pre/post and follow-up measures for control group. Conclusion: Rehabilitation after breast cancer treatment has the potential for physical, psychological and overall Qol benefits.
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Affiliation(s)
- M Poorkiani
- Department of Nursing, College of Nursing and Midwifery, Kerman University of Medical Sciences, Kerman, Iran
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Amirjannati N, Sadeghi M, Hosseini Jadda SH, Ranjbar F, Kamali K, Akhondi MA. Evaluation of semen quality in patients with malignancies referred for sperm banking before cancer treatment. Andrologia 2011; 43:317-20. [PMID: 21729127 DOI: 10.1111/j.1439-0272.2010.01077.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Different cancer treatments such as chemotherapy and radiotherapy can lead to azoospermia and even sterility for an unknown period. Whether the type of cancer could affect semen quality or not is under debate. In this study, we have reviewed semen parameters of men with cancer who deposited their sperm samples at the Avicenna Research Institute tissue bank before undergoing cytotoxic treatment. This descriptive retrospective study examined 73 cases referred to sperm bank, because of malignancy, prior to initiation of cancer treatments including chemotherapy and radiotherapy. The data recorded were age, marital status, reproductive history, semen analysis reports and cancer history of the patients. Semen samples were analysed according to recommendations of the World Health Organization (1999) before freezing. Results of the analysis showed that 71.2% (52) of patients had oligozoospermia, 93.2% (68) teratozoospermia and 86.3% (63) asthenozoospermia. Different groups of cancer patients did not show any differences in oligozoospermia, teratozoospermia and asthenozoospermia. Impaired spermatogenesis even prior to cancer treatment indicates the importance of fertility preservation. As the majority of patients had suitable specimens for freezing and assisted reproduction, sperm banking is recommended to be performed promptly and before any treatment, especially surgery.
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Affiliation(s)
- N Amirjannati
- Reproductive Biotechnology Research Center, Avicenna Research Institute, Tehran, Iran
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206
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Sadeghi M, Lynch CD, Arsalan A. Is there a correlation between dental caries and body mass index-for-age among adolescents in Iran? Community Dent Health 2011; 28:174-177. [PMID: 21780359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIM Obesity in adolescents is a public health problem and is steadily increasing in many countries. The aim of this study was to investigate the association between age-and gender-specific body mass index (BMI-for-age) and dental caries among adolescents aged 12 -15 years in Rafsanjan, Iran. MATERIALS AND METHODS Following ethical approval, 747 students aged 12-15 years were randomly selected from 12 state and private secondary schools in Rafsanjan, Iran. The DMFT index (following World Health Organization criteria) was used to assess the subjects' previous and existing dental caries experience. The BMI (Body Mass Index) percentile was calculated using BMI-for-age criteria as underweight (< 5th percent), normal-weight (5th-85th percent), at risk of being overweight (> 85th and < 95th percent) and overweight (> or = 95th percent). RESULTS Of 353 males and 394 females examined, 7.5% were underweight, 72.8% were normal-weight, 13.8% were at risk of being overweight, and 5.9% were overweight. The mean DMFT was 2.83. There was no significant difference between DMFT scores amongst the BMI-for-age groups (underweight = 2.91, normal-weight = 2.92, at risk of overweight = 2.54, overweight = 2.34, p > 0.05). However, males were more likely to have caries than females (11% of males were caries-free, in comparison to 20.6% of females; p < 0.05). CONCLUSION Almost one in five adolescents (19.7%) examined were deemed to be at risk of being overweight, or were classified as overweight. There was no association between DMFT scores and BMI-for-age scores.
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Affiliation(s)
- M Sadeghi
- Department of Restorative Dentistry, Dental School, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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207
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Farhoudian A, Soleimaninia L, Jafari F, Savari M, Saberi Zafarghandi M, Sadeghi M. Survey of special needs in elderly people: a qualitative research. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72879-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
The only way for going to rehabilitation and social participation expansion in elderly people is the identification of their special needs in a scientific and accurate way. This study conducted in order to identify the special needs in elderly people.This article is a part of a qualitative research with grounded theory method. 15 elderly of Tehran city that were selected through a purposeful sampling participated in study. The main method for collecting data was semi-structured interview that continued until theoretical saturation of information. Data was analyzed with Strauss & Corbin coding manner or continued comparison and the assessor’s viewpoints method is used for validity promotion of data. Totally, most important domains of special needs in aging group were: family and relatives, education, movement and transportation, building and places (houses and public places), social participation and occupation, amusement, health and treatment services, and people’s attitude toward their problems.Those elderly people's special needs that are disabling are often caused by their characteristics and obstacles which are created by society. Therefore, resolving these man-made barriers such as non efficient systems and services, discriminatory policies, prejudice attitudes, etc will help them in the field of rehabilitation and individual independence enhancement.
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208
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Farhoudian A, Soleimaninia L, Sadeghi M, Jafari F, Savari M, Zafarghandi MS. Survey of special needs in physically disabled people: A qualitative research. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72282-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
After sanction of “the rights of disabled people convention” United Nations Organization have been stressed more on dealing with this group’s needs. Therewith, most of countries in the world have been committed in this field. Therefore with consideration of importance of identifying the needs in disabled people and making policies for them, this study conducted in order to identify the special needs in physically disabled people. This article is a part of a qualitative research with grounded theory method. 15 physically disabled people of Tehran were selected through a purposeful sampling participated in study. The main method for collecting data was semi-structured interview that continued until theoretical saturation of information. Data was analyzed with Strauss & Corbin coding manner or continued comparison and the assessor’s viewpoints method is used for validity promotion of data.Totally, most important domains of special needs in disabled group were: family and relatives, education, movement and transportation, building and places (houses and public places), social participation and occupation, treatment and rehabilitation services, and people’s attitude toward their problems.The results indicated that for promoting social participation and function independency in disabled people, should be emphasis on “equality of opportunities” in society rather than “disability”. Thus, public systems and services should be available equally for all, such as physical environments and places, housing, transport system, educational and vocational opportunities, and socio-cultural life like equipments for sport and amusement. Then, physically disabled people can reach to a life with more quality and same with others.
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209
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Ghasemi S, Ahmadian G, Sadeghi M, Zeigler DR, Rahimian H, Ghandili S, Naghibzadeh N, Dehestani A. First report of a bifunctional chitinase/lysozyme produced by Bacillus pumilus SG2. Enzyme Microb Technol 2011; 48:225-31. [DOI: 10.1016/j.enzmictec.2010.11.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 11/03/2010] [Accepted: 11/05/2010] [Indexed: 10/18/2022]
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Razmpa E, Naghibzadeh B, Bagheri A, Sadeghi M, Khak M. The clinical manifestation, evaluation and surgical management of sphenoid sinus mucoceles: a case series and literature review. B-ENT 2011; 7:87-90. [PMID: 21838091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
OBJECTIVE This study was designed to describe clinical manifestation, treatment and outcomes in patients with sphenoid sinus mucocele presenting to Amiralam Hospital, Tehran, Iran. METHODS A review of 43280 medical records covering a period of 10 years included just 12 patients with sphenoid sinus mucocele presenting to our teaching centre. RESULTS The mean age of the patients was 35 years (ranging from 19 to 52 years). Headache was the most frequent symptom in 9 of the 12 patients. Visual disorders were noted in five patients. Two patients underwent external ethmoidectomy accompanied by intranasal sphenoidotomy while transseptal sphenoidotomy was performed for five patients and five patients underwent endoscopic endonasal sphenoidotomy. Wide spectrum antibiotics were given to all the patients for 3 to 5 days in order to prevent any iatrogenic infection. All patients did well after surgery without postoperative complications. CONCLUSIONS Sphenoid sinus mucocele should be considered in the differential diagnosis of cystic lesions presenting as visual disturbance. Retro-orbital headache with or without visual symptoms is a leading symptom. CT and MRI are essential in the diagnosis of sphenoid disease.
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Affiliation(s)
- E Razmpa
- Department of Otorhinolaryngology, Tehran University of Medical Sciences, Tehran, Iran
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211
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Mirzarezaee M, Araabi BN, Sadeghi M. Features analysis for identification of date and party hubs in protein interaction network of Saccharomyces Cerevisiae. BMC Syst Biol 2010; 4:172. [PMID: 21167069 PMCID: PMC3018396 DOI: 10.1186/1752-0509-4-172] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 12/19/2010] [Indexed: 12/12/2022]
Abstract
BACKGROUND It has been understood that biological networks have modular organizations which are the sources of their observed complexity. Analysis of networks and motifs has shown that two types of hubs, party hubs and date hubs, are responsible for this complexity. Party hubs are local coordinators because of their high co-expressions with their partners, whereas date hubs display low co-expressions and are assumed as global connectors. However there is no mutual agreement on these concepts in related literature with different studies reporting their results on different data sets. We investigated whether there is a relation between the biological features of Saccharomyces Cerevisiae's proteins and their roles as non-hubs, intermediately connected, party hubs, and date hubs. We propose a classifier that separates these four classes. RESULTS We extracted different biological characteristics including amino acid sequences, domain contents, repeated domains, functional categories, biological processes, cellular compartments, disordered regions, and position specific scoring matrix from various sources. Several classifiers are examined and the best feature-sets based on average correct classification rate and correlation coefficients of the results are selected. We show that fusion of five feature-sets including domains, Position Specific Scoring Matrix-400, cellular compartments level one, and composition pairs with two and one gaps provide the best discrimination with an average correct classification rate of 77%. CONCLUSIONS We study a variety of known biological feature-sets of the proteins and show that there is a relation between domains, Position Specific Scoring Matrix-400, cellular compartments level one, composition pairs with two and one gaps of Saccharomyces Cerevisiae's proteins, and their roles in the protein interaction network as non-hubs, intermediately connected, party hubs and date hubs. This study also confirms the possibility of predicting non-hubs, party hubs and date hubs based on their biological features with acceptable accuracy. If such a hypothesis is correct for other species as well, similar methods can be applied to predict the roles of proteins in those species.
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Affiliation(s)
- Mitra Mirzarezaee
- Department of Computer Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran
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Sarrafzadegan N, Talaei M, Sadeghi M, Kelishadi R, Oveisgharan S, Mohammadifard N, Sajjadieh AR, Kabiri P, Marshall T, Thomas GN, Tavasoli A. The Isfahan cohort study: rationale, methods and main findings. J Hum Hypertens 2010; 25:545-53. [PMID: 21107436 DOI: 10.1038/jhh.2010.99] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A 10-year longitudinal population-based study, entitled the Isfahan Cohort Study (ICS) is being conducted. The ICS commenced in 2001, recruiting individuals aged 35+ living in urban and rural areas of three counties in central Iran, to determine the individual and combined impact of various risk factors on the incidence of cardiovascular events. After 24379 person-years of follow-up with a median follow-up of 4.8 years, we documented 219 incident cases of ischemic heart disease (IHD) (125 in men and 94 in women) and 57 incident cases of stroke (28 in men and 29 in women). The absolute risk of IHD was 8.9 (7.8-10.2) per 1000 person-years for all participants, 10.6 (8.8-12.5) per 1000 person-years for men and 7.4 (6.0-9.0) per 1000 person-years for women. The respective risk of ischemic stroke was 2.3 (1.7-3.0), 2.3 (1.6-3.3) and 2.3 (1.5-3.2) per 1000 person-years. The risk of IHD was approximately 3.5-fold higher in the presence of hypertension, followed by diabetes mellitus and hypercholesterolemia with near 2.5- and twofold higher risk, respectively. This cohort provides confirmatory evidence of the ethnic differences in the magnitude of the impact of various risk factors on cardiovascular events. The differences may be due to varying absolute risk levels among populations and the existing ethnic disparities for using western risk equations to local requirements.
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Affiliation(s)
- N Sarrafzadegan
- Isfahan Cardiovascular Research Center, Isfahan University of Medical Sciences, Khorram Street, Isfahan 81465-1148, Iran.
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213
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Sadeghi M, Pezeshk H, Eslahchi C, Ahmadian S, Abadi SM. Construction of random perfect phylogeny matrix. Adv Appl Bioinform Chem 2010; 3:89-96. [PMID: 21918630 PMCID: PMC3170006 DOI: 10.2147/aabc.s13397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose Interest in developing methods appropriate for mapping increasing amounts of genome-wide molecular data are increasing rapidly. There is also an increasing need for methods that are able to efficiently simulate such data. Patients and methods In this article, we provide a graph-theory approach to find the necessary and sufficient conditions for the existence of a phylogeny matrix with k nonidentical haplotypes, n single nucleotide polymorphisms (SNPs), and a population size of m for which the minimum allele frequency of each SNP is between two specific numbers a and b. Results We introduce an O(max(n2, nm)) algorithm for the random construction of such a phylogeny matrix. The running time of any algorithm for solving this problem would be Ω (nm). Conclusion We have developed software, RAPPER, based on this algorithm, which is available at http://bioinf.cs.ipm.ir/softwares/RAPPER.
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Affiliation(s)
- Mehdi Sadeghi
- National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
- School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
| | - Hamid Pezeshk
- School of Mathematics, Statistics and Computer Sciences, Center of Excellence in Biomathematics, College of Science, University of Tehran, Tehran, Iran
| | - Changiz Eslahchi
- School of Mathematics, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
- Department of Mathematics, Shahid Beheshti University, G.C., Tehran, Iran
- Correspondence: Changiz Eslahchi, Department of Mathematics, Shahid Beheshti University, G.C., Tehran, Iran, Tel/Fax +98 21 22431652, Email
| | - Sara Ahmadian
- Department of Computer Engineering, Sharif University of Technology, Tehran, Iran
| | - Sepideh Mah Abadi
- Department of Computer Engineering, Sharif University of Technology, Tehran, Iran
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214
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Zakeri P, Moshiri B, Sadeghi M. Prediction of protein submitochondria locations based on data fusion of various features of sequences. J Theor Biol 2010; 269:208-16. [PMID: 21040732 DOI: 10.1016/j.jtbi.2010.10.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 10/16/2010] [Accepted: 10/22/2010] [Indexed: 01/16/2023]
Abstract
In this study, the predictors are developed for protein submitochondria locations based on various features of sequences. Information about the submitochondria location for a mitochondria protein can provide much better understanding about its function. We use ten representative models of protein samples such as pseudo amino acid composition, dipeptide composition, functional domain composition, the combining discrete model based on prediction of solvent accessibility and secondary structure elements, the discrete model of pairwise sequence similarity, etc. We construct a predictor based on support vector machines (SVMs) for each representative model. The overall prediction accuracy by the leave-one-out cross validation test obtained by the predictor which is based on the discrete model of pairwise sequence similarity is 1% better than the best computational system that exists for this problem. Moreover, we develop a method based on ordered weighted averaging (OWA) which is one of the fusion data operators. Therefore, OWA is applied on the 11 best SVM-based classifiers that are constructed based on various features of sequence. This method is called Mito-Loc. The overall leave-one-out cross validation accuracy obtained by Mito-Loc is about 95%. This indicates that our proposed approach (Mito-Loc) is superior to the result of the best existing approach which has already been reported.
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Affiliation(s)
- Pooya Zakeri
- Department of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan, Iran
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215
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Sadeghi M, Mirzaii M, Gholamzadeh Z, Sarabadani P, Sattari A. High cadmium-109 recovery from a dissolved silver target solution using dowex 1×8 anion-exchange resin. Radiochemistry 2010. [DOI: 10.1134/s1066362210050218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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216
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Ashrafi M, Fakheri T, Kiani K, Sadeghi M, Akhoond M. 3 INTRA CYTOPLASMIC SPERM INJECTION (ICSI) IN PATIENTS WITH OVARIAN ENDOMETRIOMA. Reprod Biomed Online 2010. [DOI: 10.1016/s1472-6483(10)62421-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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217
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Alizadeh A, Khodaei MM, Karami C, Workentin MS, Shamsipur M, Sadeghi M. Rapid and selective lead (II) colorimetric sensor based on azacrown ether-functionalized gold nanoparticles. Nanotechnology 2010; 21:315503. [PMID: 20634571 DOI: 10.1088/0957-4484/21/31/315503] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A gold nanoparticle (AuNPs)-based simple and fast colorimetric sensor for selective detecting of Pb(II) in aqueous solution has been developed. Monodisperse AuNPs (approx. 2.0 nm diameter) has been prepared facilely and further modified with an alkanethiol-bearing monoazacrown ether terminus. These AuNPs are shown to selectively sense Pb(2+) through color change, which is visually discernible by an appearance of the surface plasmon band (SPB) at 520 nm. The recognition mechanism is attributed to the unique structure of the monoazacrown ether attached to AuNPs and metal sandwich coordination between two azacrown ether moieties that are attached to separate nanoparticles. This inter-particle cross-linking results in an aggregation and apparent color change from brown to purple. Additionally, TEM experiments support the optical absorption data proving the aggregation between azacrown ether-capped gold nanoparticles. This AuNP-based colorimetric assay is a facile and robust method and allows fast detection of Pb(2+) at ambient temperatures. More importantly, the developed technique does not utilize enzymatic reactions, light-sensitive dye molecules, lengthy protocols or sophisticated instrumentation.
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Affiliation(s)
- A Alizadeh
- Faculty of Chemistry and Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, Iran.
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218
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Nayeri H, Naderi G, Asgary S, Pakmehr F, Sadeghi M, Javadi E. MS100 CORRELATION BETWEEN LAG TIME OF LDL TO IN VITRO OXIDATION AND IN VIVO OX-LDL IN THE PATIENTS WITH CAD. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70601-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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219
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Mahdevar G, Zahiri J, Sadeghi M, Nowzari-Dalini A, Ahrabian H. Tag SNP selection via a genetic algorithm. J Biomed Inform 2010; 43:800-4. [PMID: 20546935 DOI: 10.1016/j.jbi.2010.05.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 03/17/2010] [Accepted: 05/16/2010] [Indexed: 01/02/2023]
Abstract
Single Nucleotide Polymorphisms (SNPs) provide valuable information on human evolutionary history and may lead us to identify genetic variants responsible for human complex diseases. Unfortunately, molecular haplotyping methods are costly, laborious, and time consuming; therefore, algorithms for constructing full haplotype patterns from small available data through computational methods, Tag SNP selection problem, are convenient and attractive. This problem is proved to be an NP-hard problem, so heuristic methods may be useful. In this paper we present a heuristic method based on genetic algorithm to find reasonable solution within acceptable time. The algorithm was tested on a variety of simulated and experimental data. In comparison with the exact algorithm, based on brute force approach, results show that our method can obtain optimal solutions in almost all cases and runs much faster than exact algorithm when the number of SNP sites is large. Our software is available upon request to the corresponding author.
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Affiliation(s)
- Ghasem Mahdevar
- Department of Bioinformatics, University of Tehran, Tehran, Iran.
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220
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Mehrabi A, Fonouni H, Ayoub E, Rahbari NN, Müller SA, Morath C, Seckinger J, Sadeghi M, Golriz M, Esmaeilzadeh M, Hillebrand N, Weitz J, Zeier M, Büchler MW, Schmidt J, Schmied BM. A single center experience of combined liver kidney transplantation. Clin Transplant 2010; 23 Suppl 21:102-14. [PMID: 19930323 DOI: 10.1111/j.1399-0012.2009.01146.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
With advancements in the operative techniques, patient survival following liver transplantation (LTx) has increased substantially. This has led to the acceleration of pre-existing kidney disease because of immunosuppressive nephrotoxicity making additional kidney transplantation (KTx) inevitable. On the other hand, in a growing number of patients on the waiting list to receive liver, long waiting time has resulted in adverse effect of decompensated liver on the kidney function. During the last two decades, the transplant community has considered combined liver kidney transplantation (CLKTx) to overcome this problem. The aim of our study is to present an overview of our experience as well as a review of the literature in CLKTx and to discuss the controversy in this regard. All performed CLKTx (n = 22) at our institution as well as all available reported case series focusing on CLKTx are extracted. The references of the manuscripts were cross-checked to implement further articles into the review. The analyzed parameters include demographic data, indication for LTx and KTx, duration on the waiting list, Model for End-Stage Liver Disease (MELD) score, Child-Turcotte-Pugh (CTP) score, immunosuppressive regimen, post-transplant complications, graft and patient survival, and cause of death. From 1988 to 2009, a total of 22 CLKTx were performed at our institution. The median age of the patients at the time of CLKTx was 44.8 (range: 4.5-58.3 yr). The indications for LTx were liver cirrhosis, hyperoxaluria type 1, polycystic liver disease, primary or secondary sclerosing cholangitis, malignant hepatic epithelioid hemangioendothelioma, cystinosis, and congenital biliary fibrosis. The KTx indications were end-stage renal disease of various causes, hyperoxaluria type 1, polycystic kidney disease, and cystinosis. The mean follow-up duration for CLKTx patients were 4.6 +/- 3.5 yr (range: 0.5-12 yr). Overall, the most important encountered complications were sepsis (n = 8), liver failure leading to retransplantation (n = 4), liver rejection (n = 3), and kidney rejection (n = 1). The overall patient survival rate was 80%. Review of the literature showed that from 1984 to 2008, 3536 CLKTx cases were reported. The main indications for CLKTx were oxalosis of both organs, liver cirrhosis and chronic renal failure, polycystic liver and kidney disease, and liver cirrhosis along with hepatorenal syndrome (HRS). The most common encountered complications following CLKTx were infection, bleeding, biliary complications, retransplantation of the liver, acute hepatic artery thrombosis, and retransplantation of the kidney. From the available data regarding the need for post-operative dialysis (n = 673), a total of 175 recipients (26%) required hemodialysis. During the follow-up period, 154 episodes of liver rejection (4.3%) and 113 episodes of kidney rejection (3.2%) occurred. The cumulative 1, 2, 3, and 5 yr survival of both organs were 78.2%, 74.4%, 62.4%, and 60.9%, respectively. Additionally, the cumulative 1, 2, 3, and 5 yr patient survival were 84.9%, 52.8%, 45.4%, and 42.6%, respectively. The total number of reported deaths was 181 of 2808 cases (6.4%), from them the cause of death in 99 (55%) cases was sepsis. It can be concluded that there is still no definitive evidence of better graft and patient survival in CLKTx recipients when compared with LTx alone because of the complexity of the exact definition of irreversible kidney function in LTx candidates. Additionally, CLKTx is better to be performed earlier than isolated LTx and KTx leading to the avoidance of deterioration of clinical status, high rate of graft loss, and mortality. Shorter graft ischemia time and more effective immunosuppressive regimens can reduce the incidence of graft malfunctioning in CLKTx patients. Providing a model to reliably determine the need for CLKTx seems necessary. Such a model can be shaped based upon new and precise markers of renal function, and modification of MELD system.
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Affiliation(s)
- A Mehrabi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
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Abstract
Recent experiments have shown the applicability of single-layer graphene sheets (SLGSs) as electromechanical resonators. Existing theoretical models, based on linear continuum or atomistic methods, are limited to the study of linear vibrations of SLGSs. Here we introduce a hybrid atomistic-structural element which is capable of modelling nonlinear behaviour of graphene sheets. This hybrid element is based on an empirical inter-atomic potential function and can model the nonlinear dynamic response of SLGSs. Using this element, nonlinear vibrational analysis of SLGSs is performed. It is shown that the nonlinear vibrational analysis of SLGSs predicts significantly higher fundamental frequencies. Also, the effects of vibration amplitude as well as the geometry of the SLGSs on the fundamental frequency are studied and predictive relations between the fundamental frequency, the SLGS length and the non-dimensional vibration amplitude are presented. The results are verified with experimental observations and are in remarkable agreement.
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Affiliation(s)
- M Sadeghi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, PO Box 14588-89694, Iran
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Sadeghi M, Lynch CD, Shahamat N. Eighteen-month clinical evaluation of microhybrid, packable and nanofilled resin composites in Class I restorations. J Oral Rehabil 2010; 37:532-7. [PMID: 20202097 DOI: 10.1111/j.1365-2842.2010.02073.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this article was to report the results of an 18-month longitudinal randomized clinical trial that evaluated the clinical performance of microhybrid, packable and nanofilled resin composite restorations placed in Class I cavities of molar teeth. Three Class I resin composite restorations were placed in each of 35 patients. Each patient received one microhybrid ('Point 4'; Kerr, Orange, CA, USA), one packable ('Packable Premise'; Kerr, Orange, CA, USA) and one nanofilled ('Nanofilled Premise'; Kerr, Orange, CA, USA) resin composite restoration. Clinical evaluation was performed at baseline (2 weeks after placement), and after 6, 12 and 18 months after placement using modified Ryge criteria. No patients were lost from the study. At the final appointment (after 18 months), 95.4%, 93.7% and 96.2% respectively of the microhybrid ('Point 4'), packable ('Packable Premise' and nanofilled ('Nanofilled Premise') resin composite restorations received Alfa ratings. Regardless of the type of restorative material, no significant changes were observed in the modified Ryge criteria at the baseline and 18-month recalls (P <or=0.05). Three restorations (one from each group) exhibited post-operative sensitivity at the baseline and 6-month appointment. After 18 months, one packable resin composite restoration failed because of secondary caries, while secondary caries was not detected on any of the other restorations. The clinical performance of microhybrid ('Point 4'), packable ('Packable Premise') and nanofilled ('Nanofilled Premise') resin composite restorations was acceptable after 18 months. Further studies with longer follow-up periods are recommended to investigate the long-term survival of these restorations.
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Affiliation(s)
- M Sadeghi
- Department of Restorative Dentistry, Dental School, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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225
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Arab S, Sadeghi M, Eslahchi C, Pezeshk H, Sheari A. A pairwise residue contact area-based mean force potential for discrimination of native protein structure. BMC Bioinformatics 2010; 11:16. [PMID: 20064218 PMCID: PMC2821318 DOI: 10.1186/1471-2105-11-16] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2009] [Accepted: 01/09/2010] [Indexed: 11/21/2022] Open
Abstract
Background Considering energy function to detect a correct protein fold from incorrect ones is very important for protein structure prediction and protein folding. Knowledge-based mean force potentials are certainly the most popular type of interaction function for protein threading. They are derived from statistical analyses of interacting groups in experimentally determined protein structures. These potentials are developed at the atom or the amino acid level. Based on orientation dependent contact area, a new type of knowledge-based mean force potential has been developed. Results We developed a new approach to calculate a knowledge-based potential of mean-force, using pairwise residue contact area. To test the performance of our approach, we performed it on several decoy sets to measure its ability to discriminate native structure from decoys. This potential has been able to distinguish native structures from the decoys in the most cases. Further, the calculated Z-scores were quite high for all protein datasets. Conclusions This knowledge-based potential of mean force can be used in protein structure prediction, fold recognition, comparative modelling and molecular recognition. The program is available at http://www.bioinf.cs.ipm.ac.ir/softwares/surfield
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Affiliation(s)
- Shahriar Arab
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Sadeghi M, Amiri M, Gholamzadeh Z, Rowshanfarzad P. Nickel electrodeposition on copper substrate for cyclotron production of 64Cu. Radiochemistry 2009. [DOI: 10.1134/s1066362209060125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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227
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Mirzaie M, Eslahchi C, Pezeshk H, Sadeghi M. A distance-dependent atomic knowledge-based potential and force for discrimination of native structures from decoys. Proteins 2009; 77:454-63. [PMID: 19452553 DOI: 10.1002/prot.22457] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The purpose of this article is to introduce a novel model for discriminating correctly folded proteins from well designed decoy structures using mechanical interatomic forces. In our model, we consider a protein as a collection of springs and the force imposed to each atom is calculated. A potential function is obtained from statistical contact preferences within known protein structures. Combining this function with the spring equation, the interatomic forces are calculated. Finally, we consider a structure and define a score function on the 3D structure of a protein. We compare the force imposed to each atom of a protein with the corresponding atom in the other structures. We then assign larger scores to those atoms with lower forces. The total score is the sum of partial scores of atoms. The optimal structure is assumed to be the one with the highest score in the data set. To evaluate the performance of our model, we apply it on several decoy sets.
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Affiliation(s)
- Mehdi Mirzaie
- Department of Mathematical Sciences, Shahid Beheshti University, Post Code 1983963113, Tehran, Iran
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Sarrafzadegann N, Ashrafi F, Noorbakhsh M, Haghighi M, Sadeghi M, Mazaheri F, Asgari S, Akhavan A. Association of breast artery calcification with coronary artery disease and carotid intima-media thickness in premenopausal women. East Mediterr Health J 2009; 15:1474-1482. [PMID: 20218140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
ABSTRACT This study investigated whether breast arterial calcification (BAC) has an association with coronary artery diseases (CAD) in young premenopausal women and evaluated the association of BAC with carotid intima-media thickness and standard CAD risk factors. Among 84 premenopausal women aged < 55 years who were referred for coronary angiography, 34 (40.5%) had abnormal angiographic findings and 6 (7.1%) showed BAC in their mammograms. The body mass index of patients with BAC was significantly higher than those without BAC. BAC had no significant association with angiography-confirmed CAD.
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Affiliation(s)
- N Sarrafzadegann
- Isfahan Cardiovascular Research Centre, Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran.
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Malekpour SA, Naghizadeh S, Pezeshk H, Sadeghi M, Eslahchi C. A Segmental Semi Markov Model for protein secondary structure prediction. Math Biosci 2009; 221:130-5. [DOI: 10.1016/j.mbs.2009.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Revised: 07/22/2009] [Accepted: 07/23/2009] [Indexed: 11/26/2022]
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Sadeghi M, Amiri M, Roshanfarzad P, Avila M, Tenreiro C. Radiochemical studies relevant to the no-carrier-added production of 61,64Cu at a cyclotron. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2008.1504] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Copper-64 (t
½ = 12.7 h) is a promising cancer treatment radiotherapy agent and combines positron emission tomography (PET). It was produced utilizing the 64Ni(p,n) 64Cu nuclear reaction channel. Natural nickel was electroplated successfully, 48 μm thick, onto a gold-coated copper backing slab. Bombardment of nickel plated target was performed with 16 MeV protons at a current of 200 μA. Copper-64 together with copper-61 was separated from Ni and other non-isotopic impurities by ion exchange chromatography. The method of separation of radiocopper has been improved.
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Sadeghi M, Riipinen A, Väisänen E, Kantola K, Karikoski R, Taskinen H, Söderlund-Venermo M, Hedman K. PXII-27 Are the newly discovered human polyomaviruses associated with fetal death or miscarriage? J Clin Virol 2009. [DOI: 10.1016/s1386-6532(09)70278-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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232
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Katanforoush A, Sadeghi M, Pezeshk H, Elahi E. Global haplotype partitioning for maximal associated SNP pairs. BMC Bioinformatics 2009; 10:269. [PMID: 19712447 PMCID: PMC2749056 DOI: 10.1186/1471-2105-10-269] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Accepted: 08/27/2009] [Indexed: 11/10/2022] Open
Abstract
Background Global partitioning based on pairwise associations of SNPs has not previously been used to define haplotype blocks within genomes. Here, we define an association index based on LD between SNP pairs. We use the Fisher's exact test to assess the statistical significance of the LD estimator. By this test, each SNP pair is characterized as associated, independent, or not-statistically-significant. We set limits on the maximum acceptable proportion of independent pairs within all blocks and search for the partitioning with maximal proportion of associated SNP pairs. Essentially, this model is reduced to a constrained optimization problem, the solution of which is obtained by iterating a dynamic programming algorithm. Results In comparison with other methods, our algorithm reports blocks of larger average size. Nevertheless, the haplotype diversity within the blocks is captured by a small number of tagSNPs. Resampling HapMap haplotypes under a block-based model of recombination showed that our algorithm is robust in reproducing the same partitioning for recombinant samples. Our algorithm performed better than previously reported models in a case-control association study aimed at mapping a single locus trait, based on simulation results that were evaluated by a block-based statistical test. Compared to methods of haplotype block partitioning, we performed best on detection of recombination hotspots. Conclusion Our proposed method divides chromosomes into the regions within which allelic associations of SNP pairs are maximized. This approach presents a native design for dimension reduction in genome-wide association studies. Our results show that the pairwise allelic association of SNPs can describe various features of genomic variation, in particular recombination hotspots.
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Affiliation(s)
- Ali Katanforoush
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
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233
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Sadeghi M, Sarabadani P, Karami H. Synthesis of maghemite nano-particles and its application as radionuclidic adsorbant to purify 109Cd radionuclide. J Radioanal Nucl Chem 2009. [DOI: 10.1007/s10967-009-0350-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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234
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Sadeghi M, Karimi E. MONTE CARLO AND ANALYTICAL CALCULATIONS OF DOSE DISTRIBUTIONS IN CRANIOPHARYNGIOMA CYSTS TREATED WITH RADIOCOLLOIDS. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73181-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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235
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Sadeghi M, Kimberling W, Tranebjœrg L, Möller C. The prevalence of Usher Syndrome in Sweden: a nationwide epidemiological and clinical survey. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/16513860410003093] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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236
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Sadeghi M, Shahrbabak MM, Mianji GR, Javaremi AN. Polymorphism at locus of STAT5A and its association with breeding values of milk production traits in Iranian Holstein bulls. Livest Sci 2009. [DOI: 10.1016/j.livsci.2008.10.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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237
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Afshar H, Roohafza H, Mousavi G, Golchin S, Toghianifar N, Sadeghi M, Talaei M. Topiramate add-on treatment in schizophrenia: a randomised, double-blind, placebo-controlled clinical trial. J Psychopharmacol 2009; 23:157-62. [PMID: 18515465 DOI: 10.1177/0269881108089816] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Glutamate antagonists such as topiramate have been proposed based on the glutamate hypothesis of schizophrenia because its properties encourage its exploration and possible development as a medication for the treatment of schizophrenia. A randomised, double-blind, placebo-controlled clinical trial was performed on 18- to 45-year-old patients with schizophrenia. Baseline information including vital signs, height, weight, smoking status, demographic characteristics, (past) psychiatric history, medication history and medication-related adverse effects were collected. Patients were randomly assigned to a topiramate or placebo group. Efficacy of medication was measured by administering Positive and Negative Syndrome Scale (PANSS), and tolerability of treatment was recorded on day 0 (baseline), day 28 and day 56. PANSS values (95% confidence interval) at baseline, day 28 and day 56 in the topiramate group were 96.87 (85.37-108.37), 85.68 (74.67-96.70) and 76.87 (66.06-87.69), respectively; compared with 101.87 (90.37-113.37), 100.31 (89.29-111.32) and 100.56 (89.74-111.37) in the placebo group. General linear model for repeated measures analysis showed that topiramate has lowered PANSS values significantly compared with the placebo group. Similar significant decline patterns were found in all three subscales (negative, positive and psychopathology sign). Clinical response (more than 20% reduction in PANSS) was significantly higher in topiramate-treated subjects than controls (50% vs 12.5%). Topiramate can be an effective medication in controlling schizophrenic symptoms, considering its effect on negative symptoms and controlling antipsychotic-associated weight gain.
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Affiliation(s)
- H Afshar
- Behavioral Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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239
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Abstract
Excitation functions of (86)Y production via (86)Sr(p,xn), (86)Sr(d,xn), (85)Rb(alpha,xn), (85)Rb((3)He,xn), and (nat)Zr(d,alphaxn) reactions were studied by means of ALICE-ASH code and the results were compared with ALICE-91 code and experimental data. The greatest nuclear reaction of cyclotron (86)Y production was found out as (86)Sr(p,n)(86)Y process. (86)Y production yield was calculated too. A SrCO(3) thick film was deposited on a copper substrate by sedimentation method. The deposited (nat)SrCO(3) was irradiated with 15MeV proton at 30microA current beam. The separation of Y from Cu and Sr was carried out by means of dual ion exchange chromatography.
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Affiliation(s)
- M Sadeghi
- Agricultural, Medical and Industrial Research School, Nuclear Science and Technology Research Institute, P.O. Box 31485/498, Karaj, Iran.
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240
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Eslahchi C, Pezeshk H, Sadeghi M, Massoud Rahimi A, Maboudi Afkham H, Arab S. STON: A novel method for protein three-dimensional structure comparison. Comput Biol Med 2009; 39:166-72. [DOI: 10.1016/j.compbiomed.2008.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2007] [Revised: 11/27/2008] [Accepted: 12/05/2008] [Indexed: 11/29/2022]
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241
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Malekpour SA, Naghizadeh S, Pezeshk H, Sadeghi M, Eslahchi C. Protein secondary structure prediction using three neural networks and a segmental semi Markov model. Math Biosci 2009; 217:145-50. [DOI: 10.1016/j.mbs.2008.11.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2008] [Revised: 11/06/2008] [Accepted: 11/07/2008] [Indexed: 11/30/2022]
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242
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Zare-Mirakabad F, Ahrabian H, Sadeghi M, Hashemifar S, Nowzari-Dalini A, Goliaei B. Genetic algorithm for dyad pattern finding in DNA sequences. Genes Genet Syst 2009; 84:81-93. [DOI: 10.1266/ggs.84.81] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Fatemeh Zare-Mirakabad
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran
| | - Hayedeh Ahrabian
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran
- Center of Excellence in Biomathematics, School of Mathematics, Statistics, and Computer Science, University of Tehran
| | - Mehdi Sadeghi
- National Institute of Genetic Engendering and Biotechnology
- School of Computer Science, Institute for Studies in Theoretical Physics and Mathematics (IPM)
| | - Somaieh Hashemifar
- Center of Excellence in Biomathematics, School of Mathematics, Statistics, and Computer Science, University of Tehran
| | - Abbas Nowzari-Dalini
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran
- Center of Excellence in Biomathematics, School of Mathematics, Statistics, and Computer Science, University of Tehran
| | - Bahram Goliaei
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, University of Tehran
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243
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Sadeghi M, Zali A, Aboudzadeh M, Sarabadani P, Aslani G, Majdabadi A. Targetry of SrCO(3) on a copper substrate by sedimentation method for the cyclotron production no-carrier-added (86)Y. Appl Radiat Isot 2008; 67:2029-32. [PMID: 19110437 DOI: 10.1016/j.apradiso.2008.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2008] [Revised: 10/05/2008] [Accepted: 11/02/2008] [Indexed: 11/28/2022]
Abstract
Strontium carbonate deposition on copper substrate was carried out by the sedimentation method in order to produce yttrium-86. Natural strontium carbonate thick layer was prepared with 480 mg SrCO(3), 220 mg ethyl cellulose, and 7.5 mL acetone. This optimum condition is a result of several repeated experiments with different amount of ethyl cellulose and acetone. Target quality control was done by SEM photomicrograph and thermal shock test. The deposited target was irradiated at 30 microA current and 15 MeV proton beam for 12 min.
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Affiliation(s)
- M Sadeghi
- Agricultural, Medical & Industrial Research School, Karaj, Iran.
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244
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Siavash M, Sadeghi M, Salarifar F, Amini M, Shojaee-Moradie F. Comparison of body mass index and waist/height ratio in predicting definite coronary artery disease. Ann Nutr Metab 2008; 53:162-6. [PMID: 19011279 DOI: 10.1159/000172977] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Accepted: 09/01/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND Body mass index (BMI), waist circumference (WC), waist/hip ratio, waist/height ratio (WHtR) and skin fold thickness are clinical tools enabling the evaluation of obesity. WHtR is a recently introduced index to assess central fat distribution. This study was performed to compare the prognostic value of WHtR and BMI for definite coronary artery disease (CAD). METHODS A cross-sectional study was performed in the Shahid-Chamran Hospital, Isfahan, Iran. The study included 591 patients undergoing coronary angiography for suspected ischemia. We measured BMI, WC and coronary artery scores of the patients. Prevalence of CAD was compared between obese (BMI >or= 30) and abdominal obese (WHtR >or= 0.55) participants. RESULTS Prevalence of CAD was significantly higher in abdominal obese patients (WHtR >or= 0.55) than in patients without abdominal obesity (odds ratio, OR=1.63, p=0.008). The difference in CAD prevalence between obese (BMI >or= 30) and non-obese patients nearly reached significance (OR=1.48, p=0.058). There was a significant positive correlation between CAD score and age (p<0.01), WC (p<0.05), and WHtR (p<0.01) in male participants. CONCLUSION WHtR may be a better marker of central obesity and may better predict CAD than BMI and WC.
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Affiliation(s)
- M Siavash
- Isfahan Endocrine and Metabolism Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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245
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Sarrafzadegan N, Rezaporian P, Kaypour M, Mohseni M, Sadeghi M, Asgary S, Sabet B. Prognostic value of infection and inflammation markers for late cardiac events in an Iranian sample. East Mediterr Health J 2008; 14:1246-1256. [PMID: 19161100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We evaluated the serum levels of IgG antibodies to Helicobacter pylori, Chlamydia pneumoniae and cytomegalovirus and the level of the inflammatory markers C-reactive protein and fibrinogen in 57 patients with acute coronary syndrome, 65 with unstable angina, 60 with stable angina and 44 healthy controls, and whether these markers were associated with cardiac instability 6 months after admission. acute There was a significant increased risk of late coronary events (cardiac death or readmission with coronary events) associated with seropositivity to C. pneumoniae (adjusted odds ratio 2.12; 95% confidence interval: 1.16-4.08). Other parameters were not significantly associated with late cardiac events after adjustment for age, sex, diabetes mellitus, hypertension, hyperlipidaemia and smoking behaviour.
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Affiliation(s)
- N Sarrafzadegan
- Isfahan Cardiovascular Research Centre, Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran.
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246
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Chenar MP, Soltanieh M, Matsuura T, Tabe-Mohammadi A, Sadeghi M. Application of Cardo-type polyimide (PI) and polyphenylene oxide (PPO) hollow fiber membranes in two-stage membrane systems for CO2/CH4 separation. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.06.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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247
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Sadeghi M, Kakavand T, Moghaddam KK, Ghasemi R. Using computer simulation techniques to design a tellurium-123 target for 123I production. Radiochemistry 2008. [DOI: 10.1134/s1066362208050160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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248
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Sadeghi M, Pourafshari Chenar M, Rahimian M, Moradi S, Dehaghani AHS. Gas permeation properties of polyvinylchloride/polyethyleneglycol blend membranes. J Appl Polym Sci 2008. [DOI: 10.1002/app.28740] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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249
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Sadeghi M, Aboudzadeh M, Zali A, Mirzaii M, Bolourinovin F. Radiochemical studies relevant to 86Y production via 86Sr(p,n)86Y for PET imaging. Appl Radiat Isot 2008; 67:7-10. [PMID: 18930657 DOI: 10.1016/j.apradiso.2008.08.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2008] [Revised: 07/07/2008] [Accepted: 08/26/2008] [Indexed: 11/16/2022]
Abstract
A novel production technique of yttrium-86 based on bombardment of deposited strontium carbonate was investigated. (86)Y was produced via proton-induced reactions on SrCO(3) target that was prepared by the sedimentation method. Production yield of 0.37mCi/microAh at 30 microA was measured by means of gamma-ray spectrometry for natural target. The separation of (86/87/88)Y from Cu and Sr was carried out by two ion-exchange columns.
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Affiliation(s)
- M Sadeghi
- Nuclear Medicine Research Group, Agricultural, Medical & Industrial Research School, P.O. Box 31485/498, Karaj, Tehran, Iran
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Momen-Roknabadi A, Sadeghi M, Pezeshk H, Marashi SA. Impact of residue accessible surface area on the prediction of protein secondary structures. BMC Bioinformatics 2008; 9:357. [PMID: 18759992 PMCID: PMC2553345 DOI: 10.1186/1471-2105-9-357] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2007] [Accepted: 08/31/2008] [Indexed: 12/02/2022] Open
Abstract
Background The problem of accurate prediction of protein secondary structure continues to be one of the challenging problems in Bioinformatics. It has been previously suggested that amino acid relative solvent accessibility (RSA) might be an effective factor for increasing the accuracy of protein secondary structure prediction. Previous studies have either used a single constant threshold to classify residues into discrete classes (buries vs. exposed), or used the real-value predicted RSAs in their prediction method. Results We studied the effect of applying different RSA threshold types (namely, fixed thresholds vs. residue-dependent thresholds) on a variety of secondary structure prediction methods. With the consideration of DSSP-assigned RSA values we realized that improvement in the accuracy of prediction strictly depends on the selected threshold(s). Furthermore, we showed that choosing a single threshold for all amino acids is not the best possible parameter. We therefore used residue-dependent thresholds and most of residues showed improvement in prediction. Next, we tried to consider predicted RSA values, since in the real-world problem, protein sequence is the only available information. We first predicted the RSA classes by RVP-net program and then used these data in our method. Using this approach, improvement in prediction was also obtained. Conclusion The success of applying the RSA information on different secondary structure prediction methods suggest that prediction accuracy can be improved independent of prediction approaches. Thus, solvent accessibility can be considered as a rich source of information to help the improvement of these methods.
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Affiliation(s)
- Amir Momen-Roknabadi
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.
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