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Behnia S, Fathizadeh S, Hosseinnezhad P, Nemati F. Modulation of a DNA-based photodetector: Virus-Chromophore hybridization. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111899] [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: 03/30/2023]
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Lynch RC, Cassaday RD, Smith SD, Fromm JR, Cowan AJ, Warren EH, Shadman MS, Shustov A, Till BG, Ujjani CS, Libby EN, Philip M, Coye H, Martino CN, Bhark SL, Morris K, Rasmussen H, Behnia S, Voutsinas J, Gopal AK. Dose-dense brentuximab vedotin plus ifosfamide, carboplatin, and etoposide for second-line treatment of relapsed or refractory classical Hodgkin lymphoma: a single centre, phase 1/2 study. Lancet Haematol 2021; 8:e562-e571. [PMID: 34329577 DOI: 10.1016/s2352-3026(21)00170-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 01/26/2023]
Abstract
BACKGROUND Relapsed or refractory classical Hodgkin lymphoma could be treated with multiagent salvage chemotherapy followed by autologous haematopoietic stem-cell transplantation. The aim of this study is to establish the safety and activity of dose-dense brentuximab vedotin combined with ifosfamide, carboplatin, and etoposide (BV-ICE) chemotherapy in second-line treatment of classical Hodgkin lymphoma. METHODS We conducted a single-arm, open-label, phase 1/2 study of dose-dense BV-ICE at the Seattle Cancer Care Alliance, University of Washington (Seattle, WA, USA). Eligibility criteria were age 18 years or older; diagnosis of first relapse, primary refractory classical Hodgkin lymphoma after one previous line of therapy; measurable disease of at least 1 cm in the longest axis, CT of chest, abdomen, and pelvis with PET within the past 28 days; Eastern Cooperative Oncology Group performance status of 0-1; and adequate organ function. A 3 + 3 dose escalation study was done for the phase 1 part of the trial to establish the maximum tolerated dose to be used for the phase 2 study. Brentuximab vedotin was delivered on days 1 and 8 at either 1·2 mg/kg (dose level 1) or 1·5 mg/kg (dose level 2) intravenously (capped at 150 mg) with standard dosing of ICE on days 1-3 (ifosfamide 5 g/m2 plus mesna 5 g/m2 intravenously over 24 h on day 2, carboplatin area under the curve 5 on day 2 in one intravenous injection, and etoposide 100 mg/m2 on days 1-3 in one intravenous injection per day) for two 21-day cycles. The primary endpoint was to establish the recommended phase 2 dose (phase 1 part) and complete response rate after two cycles, with a prespecified target of 78% (phase 2 part). Safety analysis was done in all enrolled participants and the primary activity analysis was done in all patients with evaluable response data. This study is registered with ClinicalTrials.gov (NCT02227199); enrolment and study treatment are complete. FINDINGS Between Oct 16, 2014, and Feb 10, 2020, we enrolled 45 patients with a median age of 31 years (IQR 28-45). The recommended phase 2 dose of brentuximab vedotin was established to be 1·5 mg/kg. After a median follow-up of 3·1 years (IQR 1·7-4·1), 32 (74%; 95% CI 58·8-86·5) of 43 evaluable patients had complete responses after two cycles of treatment. Grade 3-4 haematological toxic effects were common, including neutropenia (33 [73%]), anaemia (six [13%]), and thrombocytopenia (36 [80%]). The most common grade 3-4 non-haematological toxic effects were febrile neutropenia (four [9%]), sepsis (six [13%]), increased alanine aminotransferase (five [11%]), hyperglycaemia (three [7%]), pulmonary embolism (two [4%]), and increased aspartate aminotransferase (two [4%]). There was one (2%) on-treatment death due to multisystem organ failure that was considered treatment related. Serious adverse events occurred in 13 (29%) patients. INTERPRETATION Our data suggest that dose-dense BV-ICE is a rapidly administered and active salvage regimen for patients with relapsed or refractory classical Hodgkin lymphoma despite a complete response in this trial lower than the prespecified phase 2 target. Although cross-trial comparisons should be made with caution, activity results seem to be similar to previously presented brentuximab vedotin chemotherapy salvage combinations delivered over much longer durations and can be considered in young (<60 years), transplantation-eligible patients for second-line therapy. FUNDING Seagen, Lymphoma Research Foundation, National Institutes of Health/National Cancer Institute, and generous philanthropic donations to the University of Washington from numerous individuals and families in support of lymphoma research.
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Affiliation(s)
- Ryan C Lynch
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Ryan D Cassaday
- Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Stephen D Smith
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Jonathan R Fromm
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Andrew J Cowan
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Edus H Warren
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Mazyar S Shadman
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Andrei Shustov
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Brian G Till
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Chaitra S Ujjani
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Edward N Libby
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Mary Philip
- Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hilary Coye
- Seattle Cancer Care Alliance, Seattle, WA, USA
| | | | | | - Karolyn Morris
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA
| | - Heather Rasmussen
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA
| | - Sanaz Behnia
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Jenna Voutsinas
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Ajay K Gopal
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
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Sandmaier BM, Wilbur DS, Hamlin DK, Vo P, Wong R, Baker K, Haaf R, Bouvier ME, Matesan MC, Li Y, Orozco JJ, Nartea M, Santos EB, Dorman E, Vesselle H, Lewis DH, Behnia S, Green DJ, Emery RC, Rajendran JG, Gooley TA, Storb R. A Phase I Trial of First-in-Human Alpha-Emitter Astatine-211-Labeled Anti-CD45 Antibody (211At-BC8-B10) in Combination with Fludarabine and TBI As Conditioning for Allogeneic Hematopoietic Cell Transplantation (HCT) for Patients with Refractory/Relapsed Leukemia or High-Risk Myelodysplastic Syndrome (MDS): Preliminary Results of Dose Escalation. Transplant Cell Ther 2021. [DOI: 10.1016/s2666-6367(21)00083-x] [Citation(s) in RCA: 2] [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: 10/22/2022]
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Singh N, Alexander NA, Lachance K, Lewis CW, McEvoy A, Akaike G, Byrd D, Behnia S, Bhatia S, Paulson KG, Nghiem P. Clinical benefit of baseline imaging in Merkel cell carcinoma: Analysis of 584 patients. J Am Acad Dermatol 2021; 84:330-339. [PMID: 32707254 PMCID: PMC7854967 DOI: 10.1016/j.jaad.2020.07.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND Merkel cell carcinoma (MCC) guidelines derive from melanoma and do not recommend baseline cross-sectional imaging for most patients. However, MCC is more likely to have metastasized at diagnosis than melanoma. OBJECTIVE To determine how often baseline imaging identifies clinically occult MCC in patients with newly diagnosed disease with and without palpable nodal involvement. METHODS Analysis of 584 patients with MCC with a cutaneous primary tumor, baseline imaging, no evident distant metastases, and sufficient staging data. RESULTS Among 492 patients with clinically uninvolved regional nodes, 13.2% had disease upstaged by imaging (8.9% in regional nodes, 4.3% in distant sites). Among 92 patients with clinically involved regional nodes, 10.8% had disease upstaged to distant metastatic disease. Large (>4 cm) and small (<1 cm) primary tumors were both frequently upstaged (29.4% and 7.8%, respectively). Patients who underwent positron emission tomography-computed tomography more often had disease upstaged (16.8% of 352), than those with computed tomography alone (6.9% of 231; P = .0006). LIMITATIONS This was a retrospective study. CONCLUSIONS In patients with clinically node-negative disease, baseline imaging showed occult metastatic MCC at a higher rate than reported for melanoma (13.2% vs <1%). Although imaging is already recommended for patients with clinically node-positive MCC, these data suggest that baseline imaging is also indicated for patients with clinically node-negative MCC because upstaging is frequent and markedly alters management and prognosis.
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Affiliation(s)
- Neha Singh
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington
| | - Nora A Alexander
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington
| | - Kristina Lachance
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington
| | - Christopher W Lewis
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington; Department of Physical Medicine and Rehabilitation, Northwestern University, Evanston, Illinois
| | - Aubriana McEvoy
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington; Washington University School of Medicine in St. Louis, St Louis, Missouri
| | - Gensuke Akaike
- Department of Radiology, Division of Nuclear Medicine, University of Washington, Seattle, Washington
| | - David Byrd
- Department of Surgery, Section of Surgical Oncology, University of Washington, Seattle, Washington
| | - Sanaz Behnia
- Department of Radiology, Division of Nuclear Medicine, University of Washington, Seattle, Washington
| | - Shailender Bhatia
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington; Fred Hutchinson Cancer Research Center, Seattle, Washington
| | | | - Paul Nghiem
- Department of Medicine, Division of Dermatology, University of Washington, Seattle, Washington; Fred Hutchinson Cancer Research Center, Seattle, Washington.
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Graf SA, Cassaday RD, Morris K, Voutsinas JM, Wu QV, Behnia S, Lynch RC, Krakow E, Rasmussen H, Chauncey TR, Kanan S, Soma L, Smith SD, Gopal AK. Ibrutinib Monotherapy in Relapsed or Refractory, Transformed Diffuse Large B-cell Lymphoma. Clin Lymphoma Myeloma Leuk 2020; 21:176-181. [PMID: 33358575 DOI: 10.1016/j.clml.2020.11.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/16/2020] [Accepted: 11/27/2020] [Indexed: 01/11/2023]
Abstract
BACKGROUND Histologic transformation to diffuse large B-cell lymphoma (tDLBCL) occurs in a significant proportion of indolent lymphomas. However, few studies of novel agents inform its management, particularly when relapsed after or refractory (R/R) to prior treatment. PATIENTS AND METHODS We prospectively evaluated ibrutinib monotherapy in pathologically documented patients with R/R tDLBCL in a single-arm study. The primary endpoint was overall response rate. RESULTS Twenty patients who had received a median of 4 (range, 2-9) prior lines of therapy overall (median, 2.5; range, 1-9 for tDLBCL) were treated. The overall response rate was 35%, including complete responses in 15%. The median progression-free survival and overall survival were 4.1 months (95% confidence interval, 2.4-6.2 months) and 22.4 months (95% confidence interval, 7.5 months to not reached), respectively. Disease control > 2 months was seen in 75% and > 1 year in 15%. Response was associated with either low tumor bulk or low metabolic tumor volume (P = .05) but not with antecedent lymphoma histology (P = 1.0). Treatment-related adverse events were consistent with prior studies of ibrutinib. CONCLUSIONS Ibrutinib showed low toxicity and meaningful efficacy in R/R tDLBCL, including short-term disease control in most cases. Results demonstrate the potential utility of ibrutinib in this challenging clinical setting, including as a potential bridge to more definitive treatments.
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Affiliation(s)
- Solomon A Graf
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA; Department of Hospital and Specialty Medicine, Veterans Affairs Puget Sound Health Care System, Seattle, WA
| | - Ryan D Cassaday
- Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA; Division of Hematology
| | - Karolyn Morris
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA
| | - Jenna M Voutsinas
- Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA
| | - Qian Vicky Wu
- Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA
| | - Sanaz Behnia
- Division of Nuclear Medicine, Department of Radiology
| | - Ryan C Lynch
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA
| | - Elizabeth Krakow
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA
| | - Heather Rasmussen
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA
| | - Thomas R Chauncey
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA; Department of Hospital and Specialty Medicine, Veterans Affairs Puget Sound Health Care System, Seattle, WA
| | - Sandra Kanan
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA
| | - Lorinda Soma
- Department of Pathology, University of Washington Medicine, Seattle, WA
| | - Stephen D Smith
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA
| | - Ajay K Gopal
- Division of Medical Oncology, University of Washington Medicine, Seattle, WA; Clinical Research Division, Fred Hutch Cancer Research Center, Seattle, WA.
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Behnia S, Fathizadeh S, Javanshour E, Nemati F. Light-Driven Modulation of Electrical Current through DNA Sequences: Engineering of a Molecular Optical Switch. J Phys Chem B 2020; 124:3261-3270. [DOI: 10.1021/acs.jpcb.0c00073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- S. Behnia
- Department of Physics, Urmia University of Technology, Urmia 5716693187, Iran
| | - S. Fathizadeh
- Department of Physics, Urmia University of Technology, Urmia 5716693187, Iran
| | - E. Javanshour
- Department of Physics, Urmia University of Technology, Urmia 5716693187, Iran
| | - F. Nemati
- Department of Physics, Urmia University of Technology, Urmia 5716693187, Iran
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Behnia S, Yahyavi M, Habibpourbisafar R, Mottaghi F. Study of encapsulated microbubble cluster based on association schemes perspective. Ultrason Sonochem 2019; 52:131-141. [PMID: 30477795 DOI: 10.1016/j.ultsonch.2018.11.011] [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] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 11/04/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
Ultrasound contrast agents have been recently utilized in therapeutical implementations for targeted delivery of pharmaceutical substances. Radial pulsations of a cluster of encapsulated microbubbles under the action of an ultrasound field are complex and highly nonlinear, particularly for drug and gene delivery applications with high acoustic pressure amplitudes. In this paper, based on Qin-Ferrara's model (Qin and Ferrara, 2010), the complete synchronization and cluster formation in targeted microbubbles network are studied. Also, association schemes as a novel approach are suggested for finding a relationship between coupled microbubbles elements which are immersed in blood or surrounding soft tissue. A significant advantage of this method is that the stability of the synchronized state (or symmetric eigenmode of mutual bubble oscillation) with respect to another state (another eigenmode) can now predict. More interestingly, we find a significant relationship between an isolated and multiple microbubbles. The results show that the problem of studying the dynamics of encapsulated microbubble cluster at synchronization state is dependent on the dynamical characteristics of isolated cases, shell thickness, density. Also, the distance between microbubbles has an important role in their synchronous modes.
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Affiliation(s)
- S Behnia
- Department of Physics, Urmia University of Technology, Orumieh, Iran.
| | - M Yahyavi
- Department of Physics, Bilkent University, 06800 Bilkent, Ankara, Turkey.
| | | | - F Mottaghi
- Department of Mechanical Engineering, Sahand University of Technology, Tabriz, Iran
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Petek BJ, Rosenthal DG, Patton KK, Behnia S, Keller JM, Collins BF, Cheng RK, Ho LA, Bravo PE, Mikacenic C, Raghu G. Cardiac sarcoidosis: Diagnosis confirmation by bronchoalveolar lavage and lung biopsy. Respir Med 2018; 144S:S13-S19. [PMID: 30249376 DOI: 10.1016/j.rmed.2018.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 08/21/2018] [Accepted: 09/10/2018] [Indexed: 01/08/2023]
Abstract
INTRODUCTION The diagnosis of cardiac sarcoidosis (CS) is difficult to ascertain due to the insensitivity of endomyocardial biopsy. Current diagnostic criteria require a positive endomyocardial biopsy or extra-cardiac biopsy with clinical features suggestive of CS. Common tests for diagnosis of pulmonary sarcoidosis include bronchoalveolar lavage (BAL), lung and mediastinal lymph node (MLN) biopsies. Our objective was to determine the diagnostic utility of these tests in patients with suspected CS and without prior history of pulmonary involvement. METHODS This retrospective cohort study included 37 patients without history of extra-cardiac sarcoidosis referred for suspected CS. All patients underwent chest computed tomography (CT) staged using the modified Scadding criteria, and had BAL, and/or lung or MLN biopsy. BAL cellular analyses with lymphocytes>15% and/or CD4/CD8 ratio≥ 4 were considered suggestive of sarcoidosis. The number of positive biopsies and BALs were compared between normal CT (Scadding stage 0) and abnormal CT (Scadding stage 1-4) groups. RESULTS A definitive diagnosis of sarcoidosis was ascertained in 18/31 (58%) patients undergoing lung or lymph node biopsy, and a potential diagnosis in 18/27 (67%) patients with BAL CD4/CD8>4 or lymphocytes>15%. Of the 12 patients in the normal CT group, 4/10 (40%) had positive lung biopsies, and 9/12 (75%) patients had either positive biopsy or BAL criteria. CONCLUSIONS In suspected cardiac sarcoidosis, a diagnosis of extra-cardiac sarcoidosis was ascertained in a majority of patients irrespective of degree of lung involvement on chest CT. Our results support referral for pulmonary biopsy/bronchoalveolar lavage in suspected CS to confirm the diagnosis of sarcoidosis.
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Affiliation(s)
- Bradley J Petek
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - David G Rosenthal
- Division of Cardiology, University of California San Francisco, San Francisco, CA, USA
| | - Kristen K Patton
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - Sanaz Behnia
- Department of Radiology, Division of Nuclear Medicine, University of Washington, Seattle, WA, USA
| | - Jonathan M Keller
- Center for Interstitial Lung Diseases, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Bridget F Collins
- Center for Interstitial Lung Diseases, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Richard K Cheng
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - Lawrence A Ho
- Center for Interstitial Lung Diseases, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Paco E Bravo
- Division of Cardiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Carmen Mikacenic
- Center for Interstitial Lung Diseases, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA, USA.
| | - Ganesh Raghu
- Center for Interstitial Lung Diseases, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA, USA
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Bermo M, Behnia S, Fair J, Miyaoka RS, Elojeimy S. Review of Extraskeletal Activity on Tc-99m Methylene Diphosphonate Bone Scintigraphy and Value of Cross-Sectional and SPECT-CT Imaging Correlation. Curr Probl Diagn Radiol 2018; 47:324-332. [DOI: 10.1067/j.cpradiol.2017.07.009] [Citation(s) in RCA: 4] [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] [Received: 02/23/2017] [Revised: 07/09/2017] [Accepted: 07/26/2017] [Indexed: 12/22/2022]
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Behnia S, Yahyavi M, Habibpourbisafar R. Association schemes perspective of microbubble cluster in ultrasonic fields. Ultrason Sonochem 2018; 44:45-52. [PMID: 29680627 DOI: 10.1016/j.ultsonch.2018.02.006] [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] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/31/2018] [Accepted: 02/05/2018] [Indexed: 06/08/2023]
Abstract
Dynamics of a cluster of chaotic oscillators on a network are studied using coupled maps. By introducing the association schemes, we obtain coupling strength in the adjacency matrices form, which satisfies Markov matrices property. We remark that in general, the stability region of the cluster of oscillators at the synchronization state is characterized by Lyapunov exponent which can be defined based on the N-coupled map. As a detailed physical example, dynamics of microbubble cluster in an ultrasonic field are studied using coupled maps. Microbubble cluster dynamics have an indicative highly active nonlinear phenomenon, were not easy to be explained. In this paper, a cluster of microbubbles with a thin elastic shell based on the modified Keller-Herring equation in an ultrasonic field is demonstrated in the framework of the globally coupled map. On the other hand, a relation between the microbubble elements is replaced by a relation between the vertices. Based on this method, the stability region of microbubbles pulsations at complete synchronization state has been obtained analytically. In this way, distances between microbubbles as coupling strength play the crucial role. In the stability region, we thus observe that the problem of study of dynamics of N-microbubble oscillators reduce to that of a single microbubble. Therefore, the important parameters of the isolated microbubble such as applied pressure, driving frequency and the initial radius have effective behavior on the synchronization state.
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Affiliation(s)
- S Behnia
- Department of Physics, Urmia University of Technology, Orumieh, Iran.
| | - M Yahyavi
- Department of Physics, Bilkent University, 06800 Bilkent, Ankara, Turkey
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Fathizadeh S, Behnia S, Ziaei J. Engineering DNA Molecule Bridge between Metal Electrodes for High-Performance Molecular Transistor: An Environmental Dependent Approach. J Phys Chem B 2018; 122:2487-2494. [DOI: 10.1021/acs.jpcb.7b10034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Fathizadeh
- Department of Physics, Faculty of Science, Urmia University of Technology, Urmia, Iran
| | - S. Behnia
- Department of Physics, Faculty of Science, Urmia University of Technology, Urmia, Iran
| | - J. Ziaei
- Department of Physics, Faculty of Science, Urmia University of Technology, Urmia, Iran
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Qaseem Y, Fair J, Behnia S, Elojeimy S. Metachronous presentation of small-cell rectal carcinoma on an 18F-FDG PET/CT follow-up for follicular lymphoma. Radiol Case Rep 2017; 12:632-634. [PMID: 28828141 PMCID: PMC5551997 DOI: 10.1016/j.radcr.2017.04.016] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 03/19/2017] [Accepted: 04/29/2017] [Indexed: 11/25/2022] Open
Abstract
We present a case of a 60-year-old woman with history of follicular lymphoma in remission presenting for an 18F-fluorodeoxyglucose positron emission tomography/computed tomography for suspected recurrence. Imaging showed widespread hypermetabolic lymphadenopathy consistent with lymphoma recurrence. A 3-month 18F-fluorodeoxyglucose positron emission tomography/computed tomography follow-up after chemotherapy showed resolution of hypermetabolic lymphadenopathy but multiple new hepatic lesions and a new subtle rectal lesion. Biopsies of both hepatic and rectal lesions revealed new diagnosis of metachronous high-grade small-cell carcinoma.
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Affiliation(s)
- Yousuf Qaseem
- Department of Radiology, University of New Mexico, MSC 10-5530, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Joanna Fair
- Department of Radiology, University of New Mexico, MSC 10-5530, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Sanaz Behnia
- Department of Nuclear Medicine, University of Washington, Seattle, WA, USA
| | - Saeed Elojeimy
- Department of Radiology, University of New Mexico, MSC 10-5530, 1 University of New Mexico, Albuquerque, NM 87131, USA
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Itani M, Matesan M, Behnia S, Elojeimy S. Calciphylaxis on bone scan: correlation between molecular and cross-sectional findings. Radiol Case Rep 2016; 12:175-178. [PMID: 28228905 PMCID: PMC5310540 DOI: 10.1016/j.radcr.2016.11.027] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 11/21/2016] [Indexed: 10/26/2022] Open
Abstract
Calciphylaxis is a rare devastating medical condition commonly associated with end-stage renal disease and characterized by extensive microvascular calcifications. We describe a case of calciphylaxis presenting on Tc-99m MDP bone scan imaging with asymmetric radiotracer uptake within the lower extremities corresponding to extensive soft tissue calcifications on Computed tomography. Familiarity with the classic clinical presentation and imaging features of this rare entity may help its early identification and treatment.
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Affiliation(s)
- Malak Itani
- Department of Nuclear Medicine, University of Washington, 1959 N.E. Pacific Street, Seattle, WA 98195, USA
| | - Manuela Matesan
- Department of Nuclear Medicine, University of Washington, 1959 N.E. Pacific Street, Seattle, WA 98195, USA
| | - Sanaz Behnia
- Department of Nuclear Medicine, University of Washington, 1959 N.E. Pacific Street, Seattle, WA 98195, USA
| | - Saeed Elojeimy
- Department of Radiology, MSC 10-5530, University of New Mexico, 1 University of New Mexico, Albuquerque, NM 87131, USA
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Behnia S, Fathizadeh S. Modeling the electrical conduction in DNA nanowires: charge transfer and lattice fluctuation theories. Phys Rev E Stat Nonlin Soft Matter Phys 2015; 91:022719. [PMID: 25768543 DOI: 10.1103/physreve.91.022719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Indexed: 06/04/2023]
Abstract
An analytical approach is proposed for the investigation of the conductivity properties of DNA. The charge mobility of DNA is studied based on an extended Peyrard-Bishop-Holstein model when the charge carrier is also subjected to an external electrical field. We have obtained the values of some of the system parameters, such as the electron-lattice coupling constant, by using the mean Lyapunov exponent method. On the other hand, the electrical current operator is calculated directly from the lattice operators. Also, we have studied Landauer resistance behavior with respect to the external field, which could serve as the interface between chaos theory tools and electronic concepts. We have examined the effect of two types of electrical fields (dc and ac) and variation of the field frequency on the current flowing through DNA. A study of the current-voltage (I-V) characteristic diagram reveals regions with a (quasi-)Ohmic property and other regions with negative differential resistance (NDR). NDR is a phenomenon that has been observed experimentally in DNA at room temperature. We have tried to study the affected agents in charge transfer phenomena in DNA to better design nanostructures.
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Affiliation(s)
- S Behnia
- Department of Physics, Urmia University of Technology, Orumieh, Iran
| | - S Fathizadeh
- Department of Physics, Urmia University of Technology, Orumieh, Iran
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Onishi M, Graf SA, Holmberg L, Behnia S, Shustov AR, Schiavo K, Philip M, Libby EN, Cassaday RD, Pagel JM, Roden JE, Maloney DG, Green DJ, Till BG, Press OW, Smith SD, Gopal AK. Brentuximab vedotin administered to platinum-refractory, transplant-naïve Hodgkin lymphoma patients can increase the proportion achieving FDG PET negative status. Hematol Oncol 2014; 33:187-91. [PMID: 25236531 DOI: 10.1002/hon.2166] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/18/2014] [Accepted: 08/19/2014] [Indexed: 12/22/2022]
Abstract
Normalization of fluorodeoxyglucose positron emission tomography (FDG PET) imaging prior to high-dose therapy and autologous stem cell transplantation (ASCT) improves outcomes in relapsed and refractory (RR) Hodgkin lymphoma (HL), but many patients refractory to platinum-based salvage regimens are unable to achieve this goal. We therefore investigated whether brentuximab vedotin (BV) could normalize FDG PET in platinum-refractory HL prior to ASCT. Fifteen consecutive patients with RR HL and FDG PET positive disease after platinum-based salvage therapy were treated with a median of 4 cycles of BV. Normalization of FDG PET (Deauville ≤2) occurred in 8/15 (53%) patients but was only observed in patients that had achieved partial remission or stable disease after platinum-based salvage therapy. All patients eventually proceeded to ASCT, regardless of FDG PET status. Our data suggest that BV can normalize FDG PET in a subset of patients with platinum-refractory HL prior to ASCT.
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Affiliation(s)
- Maika Onishi
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Solomon A Graf
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Leona Holmberg
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Sanaz Behnia
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Andrei R Shustov
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Karen Schiavo
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Mary Philip
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Edward N Libby
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Ryan D Cassaday
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - John M Pagel
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Jennifer E Roden
- Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - David G Maloney
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Damian J Green
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Brian G Till
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Oliver W Press
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Stephen D Smith
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Ajay K Gopal
- Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
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Shayesteh M, Behnia S, Abdi Saray A. Criticality calculations in a nuclear reactor by using the Lyapunov exponent method. ANN NUCL ENERGY 2012. [DOI: 10.1016/j.anucene.2011.12.017] [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: 10/14/2022]
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Behnia S, Akhshani A, Panahi M, Mobaraki A, Ghaderian M. Multifractal analysis of thermal denaturation based on the Peyrard-Bishop-Dauxois model. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 84:031918. [PMID: 22060414 DOI: 10.1103/physreve.84.031918] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 08/15/2011] [Indexed: 05/31/2023]
Abstract
The theory of DNA dynamics is exceedingly complex and not easily explained. In the past two decades, by adapting methods of statistical physics, the dynamics of DNA in contact with a thermal bath is widely studied. In this paper, the thermal denaturation of DNA in the framework of the Peyrard-Bishop-Dauxois (PBD) model through the Rényi dimension is investigated. As a result, the Rényi dimension spectrum of the melting transition process reveals the multifractal nature of the dynamics of the Peyrard-Bishop-Dauxois model. Also, it can be concluded that the Rényi dimension (D(q)) at negative values of q is the characteristic signature of pre-melting and thermal denaturation of DNA. Furthermore, this approach is in excellent agreement with previous experimental studies.
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Affiliation(s)
- S Behnia
- Department of Physics, Urmia University of Technology, Orumieh, Iran.
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Behnia S, Ghalichi F, Jafari A, Bonabi A. Finite element simulation of ultrasound thermo-therapy of brain: Theoretical considerations for reducing the generated temperatures at the post target bone. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83777-2] [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: 11/16/2022]
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