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Samsami S, Namavari S, Ataei S, Ghasemian A, Yazdanpanah A, Sepahi N, Hatam G, Faramarzi H, Mirzaei H, Ranjbar R, Ghanbariasad A. A Novel Multiplex LAMP Assay for the Rapid and Accurate Diagnosis of Visceral Leishmaniasis Caused by Leishmania infantum from Iran. J Trop Med 2023; 2023:9326183. [PMID: 38028028 PMCID: PMC10676275 DOI: 10.1155/2023/9326183] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 10/30/2023] [Accepted: 11/07/2023] [Indexed: 12/01/2023] Open
Abstract
Visceral leishmaniosis (VL) is one of the neglected tropical diseases despite being responsible for serious clinical symptoms, some of which lead to fatal outcomes. Thus, there is a need to apply accurate, rapid, and specific diagnostic measurements in order to control the disease and reduce the mortality rate. We aimed to develop and validate a multiplex LAMP assay for the diagnosis of VL caused by Leishmania infantum (L. infantum). Moreover, a thorough assessment was conducted to determine the effectiveness of multiplex LAMP in identifying various Leishmania species, such as Leishmania tropica (L. tropica) and Leishmania major (L. major) in comparison to Leishmania infantum (L. infantum). The diagnostic performance of the multiplex LAMP method for VL was compared to each LAMP assay, real-time polymerase chain reaction (RT-qPCR), and nested PCR technique. Two separated primers were set and used in a multiplex LAMP assay which was designed based on the ITS2 (internal transcribed spacer II) and were selected on the basis of conserved and high copy number region. Multiplex LAMP primers were designed using an online tool available at https://www.primerexplorer.jp/e. The alignment was performed using MEGA5, and the primers were further adjusted utilizing GENE Runner software. All molecular methods were tested on the serial dilution of cloned plasmid containing ITS region from standard strains of L. infantum, L. tropica, and L. major. Moreover, multiplex LAMP assay was evaluated and compared based on both standard strains and 55 clinical samples from humans as well as dogs. Various approaches were applied to interpret the multiplex LAMP reaction which deciphered a higher sensitivity when compared to the RT-qPCR for L. infantum (one copy number of plasmid, equal to 0.85 femtograms (fg) of plasmid concentration, and 0.004 parasite DNA per μL) detection while these three standard strains of Leishmania were confirmed to contain 40 DNA copies using RT-qPCR. Additionally, the multiplex LAMP detection limit was approximately equivalent to RT-qPCR for L. major and L. tropica, which included 0.342 picograms (pg) and 342 femtograms (fg) of plasmid concentration, 4 × 103 and 4 × 102 copy number of plasmid, and 17.1 and 1.71 parasite DNA per μL for L. major and L. tropica, respectively. Nested PCR exhibited a lower detection limit for L. infantum of 4 × 106 plasmid copy number compared to multiplex LAMP and RT-qPCR. Multiplex LAMP has the potential for accurate and rapid detection of infectious disease, successful treatment, and finding and monitoring asymptomatic cases, especially in low-income countries.
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Affiliation(s)
- Sahar Samsami
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
| | - Sahar Namavari
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
| | - Saeed Ataei
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
| | - Abdolmajid Ghasemian
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | - Ava Yazdanpanah
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
| | - Neda Sepahi
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | - Gholamreza Hatam
- Department of Medical Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Faramarzi
- Department of Community Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hadi Mirzaei
- Department of Medical Genetics, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Razie Ranjbar
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
| | - Ali Ghanbariasad
- Department of Medical Biotechnologies, Fasa University of Medical Sciences, Fasa, Iran
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
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Mobarak S, Salasi M, Hormati A, Khodadadi J, Ziaee M, Abedi F, Ebrahimzadeh A, Azarkar Z, Mansour-Ghanaei F, Joukar F, Yeganeh S, Yaghubi Kalurazi T, Naghipour M, Mehrabi Z, Bahadori AR, Yaghoubi S, Moslemi R, Abbaspour Kasgari H, Fakheri H, Moghimi M, Shabani AM, Nekoukar Z, Babamahmoodi F, Davoudi Badabi AR, Davoodi L, Hassaniazad M, Barahimi E, Tousi A, Sadeghi A, Hosamirudsari H, Ali Asgari A, Abdollahi M, Anushiravani A, Shabani M, Shokouhi S, Khajavirad N, Salehi M, Dehghan Manshadi SA, Mousavi H, Zolfaghari F, Azimi E, Zeinali A, Akbarpour E, Merat D, Eslami G, Mousaviasl S, Sayar S, Radmanesh E, Ebrahimzadeh M, Arizavi Z, Jelvay S, Salmanzadeh S, Esmaeilian H, Mobarak M, Karimi J, Poormontaseri Z, Hasooni Bahrini N, Bonyadi A, Dehghani F, Mirzaei H, Noori Jangi M, Pourmasoomi H, Rezaie Keikhaie L, Afshari M, Nateghi Baygi A, Nateghi Baygi H, Levi J, McCann K, Wentzel H, Simmons B, Hill A, Merat S. Evaluation of the effect of sofosbuvir and daclatasvir in hospitalized COVID-19 patients: a randomized double-blind clinical trial (DISCOVER). J Antimicrob Chemother 2021; 77:758-766. [PMID: 34849957 PMCID: PMC8690191 DOI: 10.1093/jac/dkab433] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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] [Received: 08/20/2021] [Accepted: 10/29/2021] [Indexed: 12/15/2022] Open
Abstract
Background The combination of sofosbuvir and daclatasvir has shown preliminary efficacy for hospitalized patients with COVID-19 in four open-label studies with small sample sizes. This larger trial aimed to assess if the addition of sofosbuvir/daclatasvir to standard care improved clinical outcomes in hospitalized patients with COVID-19. Methods This was a placebo-controlled, double-blind, randomized clinical trial in adults hospitalized with COVID-19 at 19 hospitals in Iran. Patients were randomized to oral sofosbuvir/daclatasvir 400/60 mg once-daily or placebo in addition to standard of care. Patients were included if they had positive PCR or diagnostic chest CT, O2 saturation <95% and compatible symptoms. The primary outcome was hospital discharge within 10 days of randomization. Secondary outcomes included mortality and time to clinical events. The trial is registered on the Iran Registry of Clinical Trials under IRCT20200624047908N1. Results Between July and October 2020, 1083 patients were randomized to either the sofosbuvir/daclatasvir arm (n = 541) or the placebo arm (n = 542). No significant difference was observed in the primary outcome of hospital discharge within 10 days, which was achieved by 415/541 (77%) in the sofosbuvir/daclatasvir arm and 411/542 (76%) in the placebo arm [risk ratio (RR) 1.01, 95% CI 0.95–1.08, P = 0.734]. In-hospital mortality was 60/541 (11%) in the sofosbuvir/daclatasvir arm versus 55/542 (10%) in the placebo arm (RR 1.09, 95% CI 0.77–1.54, P = 0.615). No differences were observed in time to hospital discharge or time to in-hospital mortality. Conclusions We observed no significant effect of sofosbuvir/daclatasvir versus placebo on hospital discharge or survival in hospitalized COVID-19 patients.
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Affiliation(s)
- Sara Mobarak
- Abadan University of Medical Sciences, Abadan, Iran
| | - Mehdi Salasi
- Imam Khomeini Hospital of Abadan Petroleum Health Organization, Abadan, Iran
| | - Ahmad Hormati
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran.,Gastroenterology and Hepatology Disease Research Center, Qom University of Medical Sciences, Qom, Iran
| | - Javad Khodadadi
- Infectious Disease Department, Qom University of Medical Sciences, Qom, Iran
| | - Masood Ziaee
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Farshid Abedi
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Azadeh Ebrahimzadeh
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Zohreh Azarkar
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Fariborz Mansour-Ghanaei
- Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Farahnaz Joukar
- Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Sara Yeganeh
- Caspian Digestive Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Tofigh Yaghubi Kalurazi
- Department of Health, Nutrition & Infectious Diseases, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammadreza Naghipour
- Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Zeinab Mehrabi
- Department of Infectious Diseases, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Reza Bahadori
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shoeleh Yaghoubi
- Department of Infectious Diseases, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Rohollah Moslemi
- Department of Clinical Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Hafez Fakheri
- Gut and Liver Research Center, Non-communicable Disease Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Minoo Moghimi
- Department of Clinical Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Mohammad Shabani
- Department of Clinical Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zahra Nekoukar
- Department of Clinical Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Farhang Babamahmoodi
- Antimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Reza Davoudi Badabi
- Antimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Lotfollah Davoodi
- Antimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mehdi Hassaniazad
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Elham Barahimi
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Abdolali Tousi
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Anahita Sadeghi
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Ali Ali Asgari
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Anushiravani
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Minoosh Shabani
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shervin Shokouhi
- Department of Infectious Diseases and Tropical Medicine, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasim Khajavirad
- Department of Internal Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Salehi
- Infectious Diseases Department, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hashem Mousavi
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farnaz Zolfaghari
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elmira Azimi
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Aida Zeinali
- Department of Cardiology, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Akbarpour
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Dorsa Merat
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Sara Sayar
- Abadan University of Medical Sciences, Abadan, Iran
| | | | | | | | - Saeed Jelvay
- Abadan University of Medical Sciences, Abadan, Iran
| | | | | | | | - Jalal Karimi
- Department of Infectious Disease, Fasa University of Medical Sciences, Fasa, Iran
| | - Zahra Poormontaseri
- Department of Infectious Disease, Fasa University of Medical Sciences, Fasa, Iran
| | | | - Atefeh Bonyadi
- Imam Khomeini Hospital of Abadan Petroleum Health Organization, Abadan, Iran
| | - Fatemeh Dehghani
- Imam Khomeini Hospital of Abadan Petroleum Health Organization, Abadan, Iran
| | - Hadi Mirzaei
- Department of Biotechnology, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Masoome Noori Jangi
- Department of Infectious Diseases, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Hossein Pourmasoomi
- Department of Infectious Diseases, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Lili Rezaie Keikhaie
- Department of Infectious Diseases, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Mahdi Afshari
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Alireza Nateghi Baygi
- Research and Development Department, Fanavaran Rojan Mohaghegh Darou Co., Tehran, Iran
| | - Helia Nateghi Baygi
- Research and Development Department, Fanavaran Rojan Mohaghegh Darou Co., Tehran, Iran
| | - Jacob Levi
- Department of Intensive Care, University College London Hospital, London, UK
| | - Kaitlyn McCann
- School of Public Health, Imperial College London, London, UK
| | - Hannah Wentzel
- School of Public Health, Imperial College London, London, UK
| | - Bryony Simmons
- Department of Infectious Diseases, Imperial College London, London, UK
| | - Andrew Hill
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Shahin Merat
- Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Sanei-Dehkordi A, Soleimani-Ahmadi M, Zare M, Mirzaei H. Epidemiological features of cutaneous leishmaniasis and distribution of sand flies in an endemic area in southeast of Iran. Parasite Epidemiol Control 2021; 14:e00220. [PMID: 34430724 PMCID: PMC8365509 DOI: 10.1016/j.parepi.2021.e00220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/30/2021] [Accepted: 07/11/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction Cutaneous leishmaniasis (CL) is a widespread tropical infectious disease in the world. It is one of the most important health problem in Iran which is endemic in different parts of country. This study was conducted to determine epidemiological features of CL and distribution of sand flies in Hajiabad County, one of the important CL foci in southeast of Iran. Methods This descriptive cross-sectional study was conducted from March 2019 to March 2020. All of the suspected CL cases with skin lesions who referred to Hajiabad County health centers and all actively detected patients were clinically and parasitologically examined for CL. Demographic and clinical data of all patients were recorded. Moreover, in this study, sand flies were collected monthly from four typical plain and foothill villages during their active season (May–November) using sticky trap. Sand flies were mounted as permanent microscopic slides, using Puri's medium, and identified by taxonomic keys. Data were analyzed using SPSS.21 software and descriptive statistics. Results and discussion A total of 70 confirmed cases of CL were recorded; the incidence rate of the disease was 101 per 100,000 people. The most infected age group was 0–10 years, with a rate of 64.3%. Males were infected more than females and the majority of cases (85.7%) were recorded from rural areas. Most of the cases had 1 lesion (51.4%) and the most lesions (55.8%) were in upper extremities. During the study period, 832 sand fly specimens comprised of ten species of Sergentomyia and seven of Phlebotomus were collected and identified. The most prevalent species was P. papatasi (47.12%), followed by P. alexandri (8.41%) and P. salehi (6.25%). Among the collected Phlebotomus species, P. papatasi and P. sergenti are known as the primary vectors of CL and P. alexandri, P. salehi, and P. caucasicus, play the main role as the secondary vectors of CL in Iran. Conclusion This study has revealed that CL is endemic in Hajiabad County and there are five CL vectors that are distributed in this County and some of them are more prevalent in plain areas. These findings can be used as a basis for implementation of interventions toward vector control, which may help in suppression of vector density, and consequently, control of CL in the study area.
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Affiliation(s)
- Alireza Sanei-Dehkordi
- Department of Medical Entomology and Vector Control, Faculty of Health, Hormozgan University of Medical Sciences, Bandar Abbas, P.O. Box: 79145-3838, Iran
| | - Moussa Soleimani-Ahmadi
- Department of Medical Entomology and Vector Control, Faculty of Health, Hormozgan University of Medical Sciences, Bandar Abbas, P.O. Box: 79145-3838, Iran.,Social Determinants in Health Promotion Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mehdi Zare
- Department of Occupational Health Engineering, Faculty of Health, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Hadi Mirzaei
- Hajiabad Health Center, Hormozgan University of Medical Sciences, Hajiabad, Iran
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Shahramian I, Moradi A, Ostadrahimi P, Mirzaei H, Sheikh M, Khosravi Bonjar A, Abdollahi S, Bazi A. Serological Features of Children Vertically Infected With Hepatitis B Virus: A Study in Amir Al-Momenin Ali Hospital of Zabol. Int J Basic Sci Med 2021. [DOI: 10.34172/ijbsm.2021.04] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introduction: Hepatitis B is a common viral infection worldwide and the main cause of chronic hepatitis, cirrhosis and liver cell carcinoma. hepatitis B e-antigen (HBeAg) is one of the markers indicating chronic hepatitis B infection. In this cross-sectional study, we investigate serological markers and HBeAg positivity in in children with maternally transmitted hepatitis B virus (HBV).Materials and Methods: Overall, 26 children with congenital HBV referred to Amir Al-Mo’menin Ali hospital in Zabol in 2019 and 2020 were enrolled. After gathering demographic characteristics, blood samples were taken from the patients. Serological tests were performed by routine ELISA tests. Data were analyzed using SPSS software version 22.Results: Twenty-six children were included in the study;18 of them (69.2%) were males. The mean age of the participants was 13.98±11 years (minimum of 1 and maximum of 18 years old). The mean age of mothers was 40.45±10 years (minimum of 27 and maximum of 63 years old). Four (15.4%) of the children were HBeAg positive, and 18 (69.2%) were HBeAb positive with no significant differences between genders (P > 0.05). HBeAg positivity was not associated with the birth rank (P = 0.71) or HBV vaccination (P = 0.17). Liver enzymes, serum albumin and children’s age and duration of maternal infection were not significantly different between HBeAg positive and HBeAg negative groups (P > 0.05). Mean serum alanine transaminase (ALT) was significantly higher in HBeAb positive than HBeAb negative children (P = 0.018), and HBeAb positivity was significantly associated with HBV vaccination history (P = 0.02). Other liver enzymes as well as age of mother and child and the duration of maternal infection were not significantly different between the two groups (P > 0.99). Conclusion: The prevalence of chronic HBV infection based on HBeAg positivity was relatively high in children vertically infected with the virus. HBeAb seroconversion seems to be associated with HBV vaccination.
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Affiliation(s)
- Iraj Shahramian
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Abdolvahab Moradi
- Infectious Diseases Research Centre, Golestan University of Medical Sciences, Gorgan, Iran
| | - Pouya Ostadrahimi
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Hadi Mirzaei
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Mahboobeh Sheikh
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Ali Khosravi Bonjar
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Samira Abdollahi
- Student Research Committee, Zabol University of Medical Sciences, Zabol, Iran
| | - Ali Bazi
- Pediatric Gastroenterology and Hepatology Research Center, Zabol University of Medical Sciences, Zabol, Iran
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Tabrizian K, Amelinia F, Belaran M, Pourheidar S, Mirzaei H, Fanoudi S. Tadalafil Reversed H-89 - and Scopolamine - Induced Spatial Learning Impairments in Male Rats. Drug Res (Stuttg) 2021; 71:275-283. [PMID: 33450772 DOI: 10.1055/a-1345-7832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Accumulated evidence shows that the cAMP and cGMP signaling pathway plays an important role in memory function and neuronal plasticity. Phosphodiesterase 5 (PDE5) is a hopeful therapeutic target in AD (Alzheimer disease), and PDE5 inhibition may be a good therapeutic strategy for the treatment of AD. In the present study, the four-day bilateral intra-hippocampal infusion of H-89 as a protein kinase AII inhibitor (10 µM/side) and intra-peritoneal injections of tadalafil (20 mg/kg) and scopolamine (0.5 mg/kg) alone and also on combination on spatial learning in Morris water maze (MWM) were investigated. DMSO and saline were used as controls for H-89 and other mentioned drugs, respectively. Rats were trained for 4 days; each day included one block of four trials. Post- training probe trial tests were performed on day 5. Administration of H-89 and scopolamine led to a significant impairment in spatial learning compared to their related controls. But, combination of tadalafil/H-89 or tadalafil/scopolamine reversed H-89 or scopolamine- induced spatial learning deficits in MWM. Taken together, these results showed the probable regulatory effects of cGMP on cholinergic and cAMP/PKA signaling pathways in co-administrations of these mentioned drugs on spatial learning in MWM.
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Affiliation(s)
- Kaveh Tabrizian
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran.,Toxicology and Addiction Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Fatemeh Amelinia
- Students Research Committee, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Maryam Belaran
- Department of Physiology, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Soheil Pourheidar
- Students Research Committee, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Hadi Mirzaei
- Department of Biotechnology, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Sahar Fanoudi
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Gholipourmalekabadi M, Khosravimelal S, Nokhbedehghan Z, Sameni M, Jajarmi V, Urbanska AM, Mirzaei H, Salimi M, Chauhan NPS, Mobaraki M, Reis RL, Samadikuchaksaraei A, Kundu SC. Modulation of Hypertrophic Scar Formation Using Amniotic Membrane/Electrospun Silk Fibroin Bilayer Membrane in a Rabbit Ear Model. ACS Biomater Sci Eng 2019; 5:1487-1496. [PMID: 33405623 DOI: 10.1021/acsbiomaterials.8b01521] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hypertrophic scarring is a dermal disorder resulting from collagen and other extra cellular matrix protein depositions following the deep trauma, severe burn injury, and surgery incisions. A variety of therapeutic procedures are currently available, however, achieving an ideal treatment method remains a challenge. In our recently published report, a 3D bilayered decellularized human amniotic membrane/electrospun silk fibroin membrane was fabricated and characterized for regenerative medical applications. To obtain a solid bind between two layers, the samples were immersed in 70% ethanol. In this study, the effects of amniotic membrane/electrospun silk fibroin on minimizing the postinjury hypertrophic scar formation were determined in the rabbit ear model. In vivo experiments were carried out to assess the bilayer membrane characteristics on full thickness hypertrophic scar at days 28 and 50 postimplantations. A significant decrease in collagen deposition and expression and increased expression and deposition of MMP1 in the wound bed were observed on the wounds dressed with bilayered membrane when compared to the amniotic membrane alone and controls (wound with no implant). The current study shows that our fabricated construct has potential as an efficient antiscarring wound dressing material and may also serve for the subsequent soft tissue engineering needs.
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Affiliation(s)
| | | | | | | | | | - Aleksandra M Urbanska
- Molecular Pharmacology Department, Memorial Sloan Kettering Cancer Center, New York, NY 10065 United States
| | - Hadi Mirzaei
- School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | | | | | - Mohammadmahdi Mobaraki
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Rui L Reis
- 3Bs Research Group, I3Bs-Institute on Biomaterials, biodegradables and Biomimetics. Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Barco, Guimaraes 4805-017, Portugal
| | | | - Subhas C Kundu
- 3Bs Research Group, I3Bs-Institute on Biomaterials, biodegradables and Biomimetics. Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Barco, Guimaraes 4805-017, Portugal
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Mirzaei H, Nasiri AA, Mohamadee R, Yaghoobi H, Khatami M, Azizi O, Zaimy MA, Azizi H. Direct growth of ternary copper nickel cobalt oxide nanowires as binder-free electrode on carbon cloth for nonenzymatic glucose sensing. Microchem J 2018. [DOI: 10.1016/j.microc.2018.07.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Boschetto D, Mirzaei H, Leong RWL, Tarroni G, Grisan E. Semiautomatic detection of villi in confocal endoscopy for the evaluation of celiac disease. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2015:8143-6. [PMID: 26738184 DOI: 10.1109/embc.2015.7320284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Celiac Disease (CD) is an immune-mediated enteropathy, diagnosed in the clinical practice by intestinal biopsy and the concomitant presence of a positive celiac serology. Confocal Laser Endomicroscopy (CLE) allows skilled and trained experts to potentially perform in vivo virtual histology of small-bowel mucosa. In particular, it allows the qualitative evaluation of mucosa alteration such as a decrease in goblet cells density, presence of villous atrophy or crypt hypertrophy. We present a semi-automatic method for villi detection from confocal endoscopy images, whose appearance change in case of villous atrophy. Starting from a set of manual seeds, a first rough segmentation of the villi is obtained by means of mathematical morphology operations. A merge and split procedure is then performed, to ensure that each seed originates a different region in the final segmentation. A border refinement process is finally performed, evolving the shape of each region according to local gradient intensities. Mean and median Dice coefficients for 290 villi originating from 66 images when compared to manually obtained ground truth are 80.71% and 87.96% respectively.
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Saadatpour Z, Bjorklund G, Chirumbolo S, Alimohammadi M, Ehsani H, Ebrahiminejad H, Pourghadamyari H, Baghaei B, Mirzaei HR, Sahebkar A, Mirzaei H, Keshavarzi M. Molecular imaging and cancer gene therapy. Cancer Gene Ther 2016:cgt201662. [PMID: 27857058 DOI: 10.1038/cgt.2016.62] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 09/21/2016] [Accepted: 09/23/2016] [Indexed: 12/30/2022]
Abstract
Gene therapy is known as one of the most advanced approaches for therapeutic prospects ranging from tackling genetic diseases to combating cancer. In this approach, different viral and nonviral vector systems such as retrovirus, lentivirus, plasmid and transposon have been designed and employed. These vector systems are designed to target different therapeutic genes in various tissues and cells such as tumor cells. Therefore, detection of the vectors containing therapeutic genes and monitoring of response to the treatment are the main issues that are commonly faced by researchers. Imaging techniques have been critical in guiding physicians in the more accurate and precise diagnosis and monitoring of cancer patients in different phases of malignancies. Imaging techniques such as positron emission tomography (PET) and single-photon emission computed tomography (SPECT) are non-invasive and powerful tools for monitoring of the distribution of transgene expression over time and assessing patients who have received therapeutic genes. Here, we discuss most recent advances in cancer gene therapy and molecular approaches as well as imaging techniques that are utilized to detect cancer gene therapeutics and to monitor the patients' response to these therapies worldwide, particularly in Iranian Academic Medical Centers and Hospitals.Cancer Gene Therapy advance online publication, 18 November 2016; doi:10.1038/cgt.2016.62.
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Affiliation(s)
- Z Saadatpour
- Bozorgmehr Imaging Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - G Bjorklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - S Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy
| | - M Alimohammadi
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran
| | - H Ehsani
- Department of Periodontology, School of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran
| | - H Ebrahiminejad
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - H Pourghadamyari
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - B Baghaei
- Department of Endodontics, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - H R Mirzaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - A Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Mirzaei
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Keshavarzi
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran
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Saadatpour Z, Rezaei A, Ebrahimnejad H, Baghaei B, Bjorklund G, Chartrand M, Sahebkar A, Morovati H, Mirzaei HR, Mirzaei H. Imaging techniques: new avenues in cancer gene and cell therapy. Cancer Gene Ther 2016; 24:1-5. [PMID: 27834357 DOI: 10.1038/cgt.2016.61] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/11/2016] [Accepted: 09/12/2016] [Indexed: 12/19/2022]
Abstract
Cancer is one of the world's most concerning health problems and poses many challenges in the range of approaches associated with the treatment of cancer. Current understanding of this disease brings to the fore a number of novel therapies that can be useful in the treatment of cancer. Among them, gene and cell therapies have emerged as novel and effective approaches. One of the most important challenges for cancer gene and cell therapies is correct monitoring of the modified genes and cells. In fact, visual tracking of therapeutic cells, immune cells, stem cells and genetic vectors that contain therapeutic genes and the various drugs is important in cancer therapy. Similarly, molecular imaging, such as nanosystems, fluorescence, bioluminescence, positron emission tomography, single photon-emission computed tomography and magnetic resonance imaging, have also been found to be powerful tools in monitoring cancer patients who have received therapeutic cell and gene therapies or drug therapies. In this review, we focus on these therapies and their molecular imaging techniques in treating and monitoring the progress of the therapies on various types of cancer.
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Affiliation(s)
- Z Saadatpour
- Bozorgmehr Imaging Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - A Rezaei
- Khanevadeh Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - H Ebrahimnejad
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - B Baghaei
- Department of Endodontics, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - G Bjorklund
- Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - M Chartrand
- DigiCare Behavioral Research, Casa Grande, AZ, USA
| | - A Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Morovati
- Department of Medical Parasitology and Medical Mycology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - H R Mirzaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - H Mirzaei
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Saadatpour L, Fadaee E, Fadaei S, Nassiri Mansour R, Mohammadi M, Mousavi SM, Goodarzi M, Verdi J, Mirzaei H. Glioblastoma: exosome and microRNA as novel diagnosis biomarkers. Cancer Gene Ther 2016; 23:415-418. [PMID: 27834360 DOI: 10.1038/cgt.2016.48] [Citation(s) in RCA: 172] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 02/08/2023]
Abstract
Glioblastoma (GBM) is known as a tumor type, which arises from astrocytes. Several studies indicated that GBM tumor cells are malignant. This is because of the fact that they consist of different cell types, which are reproducing very quickly and are also supported by a large network of blood vessels. The correct identification of various stages of GBM could help to better treat the patients with this disease. Therefore, new biomarkers such as exosomes and microRNAs (miRNAs) may help us to learn more about GBM and they may also lead to a more effective treatment for patients with GBM. Exosomes have emerged as biological vehicles, which can perform various tasks in carcinogenesis pathways such as PI3K/AKT, SOX2, PTEN, ERK, and STAT3. The miRNAs are known as small noncoding RNAs that are involved in several GBM pathogenic events. These molecules have key roles in various biological processes such as angiogenesis, metastasis and tumor growth. In this study, we highlighted various exosomes and miRNAs that could be used for diagnosis and/or prognosis biomarkers in patients with GBM.
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Affiliation(s)
- L Saadatpour
- Medical Students Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - E Fadaee
- Faculty of Medicine, Islamic Azad University of Najafabad, Najafabad, Iran
| | - S Fadaei
- Student Research Committee, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - R Nassiri Mansour
- Department of Clinical Biochemistry, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - M Mohammadi
- Hepatitis Research Center and Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - S M Mousavi
- Department of Neuroscience, School of Advanced Technologies in Medicine,Tehran University of Medical Sciences, Tehran, Iran
| | - M Goodarzi
- Department of Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, Leuven, Belgium
| | - J Verdi
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Department of Applied Cell Sciences, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Mirzaei
- Department of Applied Cell Sciences, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.,Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Faghihloo E, Araei Y, Mohammadi M, Mirzaei H, Mohammadi HR, Mokhtari-Azad T. The effect of oxamflatin on the E-cadherin expression in gastric cancer cell line. Cancer Gene Ther 2016; 23:396-399. [DOI: 10.1038/cgt.2016.52] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 08/21/2016] [Accepted: 08/26/2016] [Indexed: 01/12/2023]
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Mirzaei H, Kazemi B, Bandehpour M, Shoari A, Asgary V, Ardestani MS, Madadkar-Sobhani A, Cohan RA. Computational and nonglycosylated systems: a simpler approach for development of nanosized PEGylated proteins. Drug Des Devel Ther 2016; 10:1193-200. [PMID: 27042012 PMCID: PMC4801162 DOI: 10.2147/dddt.s98323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Cysteine PEGylation includes several steps, and is difficult to manage in practice. In the current investigation, the cysteine PEGylation of erythropoietin analogs was examined using computational and nonglycosylated systems to define a simpler approach for specific PEGylation. Two model analogs (E31C and E89C) were selected for PEGylation based on lowest structural deviation from the native form, accessibility, and nucleophilicity of the free thiol group. The selected analogs were cloned and the expression was assessed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western blot using Coomassie blue staining and anti-His monoclonal antibody, respectively. PEGylation with 20 kDa mPEG-maleimide resulted in 79% and 82% conjugation yield for E31C and E89C nonglycosylated erythropoietin (ngEPO) analogs, respectively. The size distribution and charge analysis showed an increase in size and negative charge of the PEGylated forms compared with nonconjugated ones. Biological assay revealed that E31C and E89C mutations and subsequent PEGylation of ngEPO analogs have no deleterious effects on in vitro biological activity when compared to CHO-derived recombinant human erythropoietin. In addition, PEG-conjugated ngEPOs showed a significant increase in plasma half-lives after injection into rats when compared to nonconjugated ones. The development of the cysteine-PEGylated proteins using nonglycosylated expression system and in silico technique can be considered an efficient approach in terms of optimization of PEGylation parameters, time, and cost.
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Affiliation(s)
- Hadi Mirzaei
- Department of Biotechnology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bahram Kazemi
- Department of Biotechnology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mojgan Bandehpour
- Department of Biotechnology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Shoari
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Vahid Asgary
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Mehdi Shafiee Ardestani
- Department of Radiopharmacy, Pharmacy Faculty, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Reza Ahangari Cohan
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
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Nafissi N, Khayamzadeh M, Mahdavi S, Mirzaei H, Zeinali Z, Hadizadeh M, Samsami M, Moradi-Joo M, Malekzadeh M, Akbari M. P297 Radical IORT: pros and cons; comparison of two trials ELIOT and TARGIT-A in breast cancer management. Breast 2015. [DOI: 10.1016/s0960-9776(15)70328-0] [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: 11/24/2022] Open
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15
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Boschetto D, Mirzaei H, Leong RWL, Grisan E. Detection and density estimation of goblet cells in confocal endoscopy for the evaluation of celiac disease. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2015:6248-6251. [PMID: 26737720 DOI: 10.1109/embc.2015.7319820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Celiac Disease (CD) is an immune-mediated enteropathy, diagnosed in the clinical practice by intestinal biopsy and the concomitant presence of a positive celiac serology. Confocal Laser Endomicroscopy (CLE) allows skilled and trained experts to potentially perform in vivo virtual histology of small-bowel mucosa. In particular, it allows the qualitative evaluation of mucosa alteration such as a decrease in goblet cells density, presence of villous atrophy or crypt hypertrophy. We present a semi-automatic computer-based method for the detection of goblet cells from confocal endoscopy images, whose density changes in case of pathological tissue. After a manual selection of a suitable region of interest, the candidate columnar and goblet cells' centers are first detected and the cellular architecture is estimated from their position using a Voronoi diagram. The region within each Voronoi cell is then analyzed and classified as goblet cell or other. The results suggest that our method is able to detect and label goblet cells immersed in a columnar epithelium in a fast, reliable and automatic way. Accepting 0.44 false positives per image, we obtain a sensitivity value of 90.3%. Furthermore, estimated and real goblet cell densities are comparable (error: 9.7 ± 16.9%, correlation: 87.2%, R(2) = 76%).
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Khodabakhshi A, Ghayour-Mobarhan M, Rooki H, Vakili R, Hashemy SI, Mirhafez SR, Shakeri MT, Kashanifar R, Pourbafarani R, Mirzaei H, Dahri M, Mazidi M, Ferns G, Safarian M. Comparative measurement of ghrelin, leptin, adiponectin, EGF and IGF-1 in breast milk of mothers with overweight/obese and normal-weight infants. Eur J Clin Nutr 2014; 69:614-8. [DOI: 10.1038/ejcn.2014.205] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 08/12/2014] [Accepted: 08/22/2014] [Indexed: 11/09/2022]
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Gholami S, Mirzaei H, Meigooni A, Jabariarfaei A, Mahdavi S, Blookat E, Ghorbani M. SU-E-T-350: Investigation About Source of Errors in Treatment Planning of HDR Brachytherapy by Using a New Phantom Design Combined with Gafchromic Films and TG-43 Calculation. Med Phys 2013. [DOI: 10.1118/1.4814784] [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: 11/07/2022] Open
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18
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Gholami S, Meigooni AS, Mahdavi SM, Mirzaei H. SU-E-T-320: A New Verification Phantom for GYN Brachytherapy Applicators Using GafChromic - Films. Med Phys 2012; 39:3777. [PMID: 28517282 DOI: 10.1118/1.4735407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Brachytherapy plays an important role in radiation therapy a wide range of tumor sits such as vaginal, cervical and endometrial cancers. The purpose of this project was to design, fabricate and verify a new phantom for dosimetric verification at small distances from GYN applicators used with GZP6 cobalt-60 HDR system. METHODS A new phantom has been designed and fabricated from 90 slabs of 18×16×0.2 cm3 Perspex to accommodate one tandem and two ovoids. The thin layer of the slabs was chosen to place GafChromic films in between the slabs for dosimetry with GZP6 cobalt-60 HDR system. For verification of this device, an assembly composed of a large ovoid size (3cm diameter) and tandem #1 with the least curvature was selected in this study. With this assembly, GafChromic films were exposed using a plan with 500 cGy dose delivery to point "A". The irradiated films were scanned. The responses of the films were converted to dose by calibrating samples of these films using a cobalt-60 teletherapy system in the range of 25 to 800 cGy dose. The measured isodose curves with the films were compared to calculated isodose lines by the treatment planning software. RESULTS The Result of these investigations indicated differences of up to ± 23 % between the planning and measured dosimetry at different points in GYN implant with cobalt-60 HDR source of GZP6 system. Therefore, this phantom enabled us to confirm the accuracy of radiation delivery to the GYN patients with cobalt-60 HDR source of GZP6 system. CONCLUSIONS The new phantom design could be utilized for the QA procedure of the GZP6 cobalt-60 HDR system as well as the Ir-192 HDR system to confirmation the accuracy of dose distribution in GYN implants, especially in non-traditional implants. The Radiotherapy Department of Shahid Beheshti University at Shohada hospital sponsored the purchase of the phantom materials and films used in the investigations.
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Affiliation(s)
- S Gholami
- Cancer institution, radiotherapy group, Tehran.,Comprehensive Cancer Center of Nevada, Las Vegas, NV.,Tehran university, department of medical physics.,Shahid Beheshti university, radiotherapy group
| | - A S Meigooni
- Cancer institution, radiotherapy group, Tehran.,Comprehensive Cancer Center of Nevada, Las Vegas, NV.,Tehran university, department of medical physics.,Shahid Beheshti university, radiotherapy group
| | - Sr Mehdi Mahdavi
- Cancer institution, radiotherapy group, Tehran.,Comprehensive Cancer Center of Nevada, Las Vegas, NV.,Tehran university, department of medical physics.,Shahid Beheshti university, radiotherapy group
| | - H Mirzaei
- Cancer institution, radiotherapy group, Tehran.,Comprehensive Cancer Center of Nevada, Las Vegas, NV.,Tehran university, department of medical physics.,Shahid Beheshti university, radiotherapy group
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Mirzaei H, Pourjafar H, Homayouni A. Effect of calcium alginate and resistant starch microencapsulation on the survival rate of Lactobacillus acidophilus La5 and sensory properties in Iranian white brined cheese. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.12.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Otieno D, Mirzaei H, Hussain M, Li Y, Schmidt M, Wartinger M, Jung E, Ribeiro N, Pereira J, Tenhunen J. Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado. Journal of Arid Environments 2011; 75:231-238. [PMID: 0 DOI: 10.1016/j.jaridenv.2010.10.011] [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] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
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Kashefi P, Montazeri K, Mirzaei H. 597. Addition of Midazolam to Lidocaine for Intravenous Regional Anesthesia. Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00183] [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: 11/03/2022]
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