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Torabi M, Aghanejad A, Savadi P, Barzegari A, Omidi Y, Barar J. Fabrication of mesoporous silica nanoparticles for targeted delivery of sunitinib to ovarian cancer cells. Bioimpacts 2023; 13:255-267. [PMID: 37431477 PMCID: PMC10329750 DOI: 10.34172/bi.2023.25298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 07/06/2022] [Accepted: 07/23/2022] [Indexed: 04/13/2024]
Abstract
INTRODUCTION Mesoporous silica nanoparticles (MSNPs) are considered innovative multifunctional structures for targeted drug delivery owing to their outstanding physicochemical characteristics. METHODS MSNPs were fabricated using the sol-gel method, and polyethylene glycol-600 (PEG600) was used for MSNPs modification. Subsequently, sunitinib (SUN) was loaded into the MSNPs, MSNP-PEG and MSNP-PEG/SUN were grafted with mucin 16 (MUC16) aptamers. The nanosystems (NSs) were characterized using FT-IR, TEM, SEM, DLS, XRD, BJH, and BET. Furthermore, the biological impacts of MSNPs were evaluated on the ovarian cancer cells by MTT assay and flow cytometry analysis. RESULTS The results revealed that the MSNPs have a spherical shape with an average dimension, pore size, and surface area of 56.10 nm, 2.488 nm, and 148.08 m2g-1, respectively. The cell viability results showed higher toxicity of targeted MSNPs in MUC16 overexpressing OVCAR-3 cells as compared to the SK-OV-3 cells; that was further confirmed by the cellular uptake results. The cell cycle analysis exhibited that the induction of sub-G1 phase arrest mostly occurred in MSNP-PEG/SUN-MUC16 treated OVCAR-3 cells and MSNP-PEG/SUN treated SK-OV-3 cells. DAPI staining showed apoptosis induction upon exposure to targeted MSNP in MUC16 positive OVCAR-3 cells. CONCLUSION According to our results, the engineered NSs could be considered an effective multifunctional targeted drug delivery platform for the mucin 16 overexpressing cells.
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Affiliation(s)
- Mitra Torabi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ayuob Aghanejad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pouria Savadi
- Di.S.T.A.Bi.F., University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy
| | - Abolfazl Barzegari
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
| | - Jaleh Barar
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
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Torabi M, Aghanejad A, Savadi P, Barzegari A, Omidi Y, Barar J. Targeted Delivery of Sunitinib by MUC-1 Aptamer-Capped Magnetic Mesoporous Silica Nanoparticles. Molecules 2023; 28:molecules28010411. [PMID: 36615606 PMCID: PMC9824472 DOI: 10.3390/molecules28010411] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
Magnetic mesoporous silica nanoparticles (MMSNPs) are being widely investigated as multifunctional novel drug delivery systems (DDSs) and play an important role in targeted therapy. Here, magnetic cores were synthesized using the thermal decomposition method. Further, to improve the biocompatibility and pharmacokinetic behavior, mesoporous silica was synthesized using the sol-gel process to coat the magnetic cores. Subsequently, sunitinib (SUN) was loaded into the MMSNPs, and the particles were armed with amine-modified mucin 1 (MUC-1) aptamers. The MMSNPs were characterized using FT-IR, TEM, SEM, electrophoresis gel, DLS, and EDX. MTT assay, flow cytometry analysis, ROS assessment, and mitochondrial membrane potential analysis evaluated the nanoparticles' biological impacts. The physicochemical analysis revealed that the engineered MMSNPs have a smooth surface and spherical shape with an average size of 97.6 nm. The biological in vitro analysis confirmed the highest impacts of the targeted MMSNPs in MUC-1 overexpressing cells (OVCAR-3) compared to the MUC-1 negative MDA-MB-231 cells. In conclusion, the synthesized MMSNP-SUN-MUC-1 nanosystem serves as a unique multifunctional targeted delivery system to combat the MUC-1 overexpressing ovarian cancer cells.
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Affiliation(s)
- Mitra Torabi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51656-65811, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 516664-14766, Iran
| | - Ayuob Aghanejad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51656-65811, Iran
- Correspondence: (A.A.); or (J.B.); Tel./Fax: +98-41-33367929 (A.A.); +1-(954)-262-1878 (J.B.)
| | - Pouria Savadi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (Di.S.T.A.Bi.F.), University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy
| | - Abolfazl Barzegari
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51656-65811, Iran
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
| | - Jaleh Barar
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 516664-14766, Iran
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
- Correspondence: (A.A.); or (J.B.); Tel./Fax: +98-41-33367929 (A.A.); +1-(954)-262-1878 (J.B.)
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Akbarzadeh-Khiavi M, Torabi M, Olfati AH, Rahbarnia L, Safary A. Bio-nano scale modifications of melittin for improving therapeutic efficacy. Expert Opin Biol Ther 2022; 22:895-909. [PMID: 35687355 DOI: 10.1080/14712598.2022.2088277] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 12/12/2022]
Abstract
INTRODUCTION Melittin (MLT), a natural membrane-active component, is the most prominent cytolytic peptide from bee venom. Remarkable biological properties of MLT, including anti-inflammatory, antimicrobial, anticancer, anti-protozoan, and antiarthritic activities, make it an up-and-coming therapeutic candidate for a wide variety of human diseases. Therapeutic applications of MLT may be hindered due to low stability, high toxicity, and weak tissue penetration. Different bio-nano scale modifications hold promise for improving its functionality and therapeutic efficacy. AREAS COVERED In the current review, we aimed to provide a comprehensive insight into strategies used for MLT conjugations and modifications, cellular delivery of modified forms, and their clinical perspectives by reviewing the published literature on PubMed, Scopus, and Google Scholar databases. We also emphasized the MLT structure modifications, mechanism of action, and cellular toxicity. EXPERT OPINION Developing new analogs and conjugates of MLT as a natural drug with improved functions and fewer side effects is crucial for the clinical translation of this approach worldwide, especially where the chemicals and synthetic drugs are more expensive or unavailable in the healthcare system. MLT-nanoconjugation may be one of the best-optimized strategies for improving peptide delivery, increasing its therapeutic efficacy, and providing minimal nonspecific cellular lytic activity. [Figure: see text].
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Affiliation(s)
- Mostafa Akbarzadeh-Khiavi
- Liver and Gastrointestinal Diseases Research Center Tabriz University of Medical Sciences, Tabriz, Iran.,Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mitra Torabi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir-Hossein Olfati
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Rahbarnia
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azam Safary
- Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Toroghi R, Sodavari S, Tabatabaeizadeh SE, Sharghi AS, Irankhah N, Fakhraee M, Farzin HR, Sarani M, Khayyat SH, Ashouri M, Torabi M. The First Occurrence of Hepatitis-Hydropericardium Syndrome in Iran and Effective Applied Control Measures in the Affected Commercial Broiler Flock. Avian Dis 2022; 66:213-219. [PMID: 35723929 DOI: 10.1637/aviandiseases-d-21-00086] [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] [Received: 09/05/2021] [Accepted: 02/01/2022] [Indexed: 11/05/2022]
Abstract
Fowl adenoviruses cause three economically important diseases in broiler chicken flocks: hepatitis-hydropericardium syndrome (HHS), inclusion body hepatitis (IBH), and adenoviral gizzard erosion. IBH has not been considered a serious threat in northeast Iran since the last decade, because no major effect on flock performance has been noticed along with a low mortality rate. During this period, all the sporadic IBH outbreaks have also been investigated for HHS without finding any confirmed case. In March 2021, a 15-day-old commercial broiler flock in northeast Iran showed a 50% mortality rate, and birds underwent postmortem examination, histopathology, molecular testing, and phylogenetic analysis for possible disease agents. Typical gross lesions of HHS were observed postmortem that included hydropericardium with an unusual accumulation of jelly-like and straw-colored fluid in the pericardial sac (without right ventricular failure); petechial or ecchymotic hemorrhages on the myocardium, myocardial valves, and endocardium; and discolored and mottled liver along with small white foci and petechial or ecchymotic hemorrhages. Histopathologic analysis showed necrosis of hepatocytes and basophilic inclusion bodies in the livers. The molecular tests performed for detection of fowl adenovirus (FAdV), H5 avian influenza virus, Newcastle disease virus, avian infectious bronchitis virus (IBV), H9N2, chicken infectious anemia virus (CIAV), infectious bursal disease (IBD) virus, Marek's disease virus, Ornithobacterium rhinotracheale, Mycoplasma gallisepticum, and Mycoplasma synoviae turned out positive for FAdV, CIAV, IBD vaccine virus, and IBV serotypes 793B and variant I. The phylogenetic tree based on the hexon gene loop 1 demonstrated a FAdV serotype 4 (FAdV-4) that was identical to Pakistani isolate PARC-1/98. Because it was the first detection of a FAdV-4 in Iran, the stamping out program was applied immediately on the basis of HHS gross lesions and positive PCR reaction on pericardial jelly-like fluid. It seems that this eradication strategy was successful because no outbreaks were noticed for 2 mo after the initial outbreak. It was concluded that the use of gross pathologic baselines, quick diagnosis of disease, and close collaboration between governmental and private sectors were the critical factors that helped locally control the first occurrence of HHS in Iran.
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Affiliation(s)
- R Toroghi
- Mashhad Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 9183896516, Mashhad, Iran, .,MAAD Veterinary Diagnostic Laboratory, 9198716161, Mashhad, Iran
| | - S Sodavari
- MAAD Veterinary Diagnostic Laboratory, 9198716161, Mashhad, Iran
| | - S-E Tabatabaeizadeh
- Mashhad Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 9183896516, Mashhad, Iran
| | - A S Sharghi
- Veterinary Head Office of Khorasan Razavi province, 9185333446, Mashhad, Iran
| | - N Irankhah
- MAAD Veterinary Diagnostic Laboratory, 9198716161, Mashhad, Iran
| | - M Fakhraee
- Mashhad Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 9183896516, Mashhad, Iran
| | - H R Farzin
- Mashhad Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 9183896516, Mashhad, Iran
| | - M Sarani
- Mashhad Branch, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 9183896516, Mashhad, Iran
| | | | - M Ashouri
- Veterinary Head Office of Khorasan Razavi province, 9185333446, Mashhad, Iran
| | - M Torabi
- Veterinary Head Office of Khorasan Razavi province, 9185333446, Mashhad, Iran
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Kooshkaki O, Derakhshani A, Safarpour H, Najafi S, Vahedi P, Brunetti O, Torabi M, Lotfinejad P, Paradiso AV, Racanelli V, Silvestris N, Baradaran B. The Latest Findings of PD-1/PD-L1 Inhibitor Application in Gynecologic Cancers. Int J Mol Sci 2020; 21:E5034. [PMID: 32708748 PMCID: PMC7404077 DOI: 10.3390/ijms21145034] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/13/2020] [Accepted: 07/13/2020] [Indexed: 12/13/2022] Open
Abstract
Gynecologic cancers account for approximately 11% of the newly diagnosed cancers in women in the United States and for 18% globally. The presence of tumor-infiltrating lymphocytes (TILs) influences the clinical outcome of cancer patients and immune checkpoint inhibitors (ICIs), including anti programmed cell death protein-1 (anti-PD-1), anti-programmed death-ligand 1 (anti-PD-L1), and anticytotoxic T-lymphocyte antigen 4 (anti-CTLA-4), which have been approved for treating different types of malignancies. Antibodies targeting the PD-1/PD-L1 checkpoint have shown dynamic and durable tumor regressions, suggesting a rebalancing of the host-tumor interaction. There are several the US food and drug administration (FDA)-approved ICIs targeting PD-1, including pembrolizumab and nivolumab, as well as those targeting PD-L1, including avelumab, atezolizumab, and durvalumab for melanoma, renal cell cancer, colorectal cancer, head and neck cancer, cervix cancer, urothelial cancer, and lung cancer. Current pre-clinical and clinical studies assessing PD-1/PD-L1 inhibitors in several gynecologic cancers have reported significant antitumor activity. In this review, we investigate pre-clinical and clinical studies that describe the safety and efficacy of anti-PD-1/PD-L1 antibodies, with a particular focus on ongoing clinical trials, analyzing the oncological outcome and adverse effects of ICIs in gynecologic cancers.
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Affiliation(s)
- Omid Kooshkaki
- Student Research Committee, Birjand University of Medical Sciences, Birjand 9717853577, Iran;
- Department of Immunology, Birjand University of Medical Sciences, Birjand 9717853577, Iran
| | - Afshin Derakhshani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.N.); (P.L.)
| | - Hossein Safarpour
- Cellular & Molecular Research Center, Birjand University of Medical Sciences, Birjand 9717853577, Iran;
| | - Souzan Najafi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.N.); (P.L.)
| | - Parviz Vahedi
- Department of Anatomical Sciences, Maragheh University of Medical Sciences, Maragheh 5165665931, Iran;
| | - Oronzo Brunetti
- Medical Oncology Unit, IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Mitra Torabi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran;
| | - Parisa Lotfinejad
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.N.); (P.L.)
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166614766, Iran
| | - Angelo Virgilio Paradiso
- Institutional BioBank, Experimental Oncology and Biobank Management Unit, IRCCS Istituto Tumori Giovanni Paolo II, 70124 Bari, Italy;
| | - Vito Racanelli
- Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70121 Bari, Italy;
| | - Nicola Silvestris
- Medical Oncology Unit, IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
- Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70121 Bari, Italy;
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.N.); (P.L.)
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166614766, Iran
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Kooshkaki O, Derakhshani A, Hosseinkhani N, Torabi M, Safaei S, Brunetti O, Racanelli V, Silvestris N, Baradaran B. Combination of Ipilimumab and Nivolumab in Cancers: From Clinical Practice to Ongoing Clinical Trials. Int J Mol Sci 2020; 21:ijms21124427. [PMID: 32580338 PMCID: PMC7352976 DOI: 10.3390/ijms21124427] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 12/13/2022] Open
Abstract
Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed cell death protein 1 (PD-1) are inhibitory checkpoints that are commonly seen on activated T cells and have been offered as promising targets for the treatment of cancers. Immune checkpoint inhibitors (ICIs)targeting PD-1, including pembrolizumab and nivolumab, and those targeting its ligand PD-L1, including avelumab, atezolizumab, and durvalumab, and two drugs targeting CTLA-4, including ipilimumab and tremelimumab have been approved for the treatment of several cancers and many others are under investigating in advanced trial phases. ICIs increased antitumor T cells’ responses and showed a key role in reducing the acquired immune system tolerance which is overexpressed by cancer and tumor microenvironment. However, 50% of patients could not benefit from ICIs monotherapy. To overcome this, a combination of ipilimumab and nivolumab is frequently investigated as an approach to improve oncological outcomes. Despite promising results for the combination of ipilimumab and nivolumab, safety concerns slowed down the development of such strategies. Herein, we review data concerning the clinical activity and the adverse events of ipilimumab and nivolumab combination therapy, assessing ongoing clinical trials to identify clinical outlines that may support combination therapy as an effective treatment. To the best of our knowledge, this paper is one of the first studies to evaluate the efficacy and safety of ipilimumab and nivolumab combination therapy in several cancers.
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Affiliation(s)
- Omid Kooshkaki
- Student research committee, Birjand University of Medical Sciences, Birjand 9717853577, Iran;
- Department of Immunology, Birjand University of Medical Sciences, Birjand 9717853577, Iran
| | - Afshin Derakhshani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.S.)
| | - Negar Hosseinkhani
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166614766, Iran;
| | - Mitra Torabi
- Student research committee, Tabriz University of medical sciences, Tabriz 5165665811, Iran;
| | - Sahar Safaei
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.S.)
| | - Oronzo Brunetti
- Medical Oncology Unit, IRCCS IstitutoTumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Vito Racanelli
- Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Nicola Silvestris
- Medical Oncology Unit, IRCCS IstitutoTumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
- Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy;
- Correspondence: (N.S.); (B.B.)
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz 5165665811, Iran; (A.D.); (S.S.)
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166614766, Iran;
- Correspondence: (N.S.); (B.B.)
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Kesmati M, Torabi M, Pourreza N, Abdollahzadeh R, Rahiminezhadseta R, Banitorof MB. Effects of Nanoparticle and Conventional-Size Suspensions of MgO and ZnO on Recognition Memory in Mice. NEUROPHYSIOLOGY+ 2020. [DOI: 10.1007/s11062-020-09847-4] [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: 11/29/2022]
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Hemeda AA, Pal S, Mishra A, Torabi M, Ahmadlouydarab M, Li Z, Palko J, Ma Y. Effect of Wetting and Dewetting Dynamics on Atomic Force Microscopy Measurements. Langmuir 2019; 35:13301-13310. [PMID: 31536702 DOI: 10.1021/acs.langmuir.9b02575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Water bridge dynamics between an atomic force microscopy (AFM) tip and a flat substrate is studied by using a multibody dissipative particle dynamics (MDPD) model. First, the numerical model is validated by comparing the present results of droplet contact angles and liquid bridges with those reported in the literature. Then, the ability of MDPD to capture the meniscus shape and behavior for different operating conditions and geometric parameters is examined for both static and dynamic cases. Hence, several parametric studies and analyses of the AFM tip configuration and its operating conditions are reported. It is found that a critical capillary number of about 0.001 is calculated based on 5% change on the force measurements between the static and dynamic results. It is also demonstrated that the hysteresis behavior in the capillary force exerted on the AFM tip can be successfully predicted by using the MDPD model when the tip approaches or retracts from the substrate. Moreover, there is an excellent agreement in the results of breakup distance for different water bridge volumes between the predictions of the MDPD model and the theory. Also, the hysteresis of capillary force exerted on an AFM tip composed of multibody design is studied. The prediction on the transition of the capillary force vs distance between the AFM tip and the substrate is in good agreement with the experimental results. Therefore, we demonstrate a validated MDPD model which can successfully capture liquid bridge dynamics. This model can be used as a powerful design tool for meniscus manipulation technology, such as dip-pen nanolithography, as well as for studying dynamic, e.g., tapping mode AFM tip, interactions with a liquid bridge.
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Affiliation(s)
- A A Hemeda
- School of Engineering , University of California, Merced , Merced , California 95343 , United States
- Aerospace Engineering Department , Cairo University , Giza 12613 , Egypt
| | - S Pal
- Department of Mechanical Engineering , McMaster University , Hamilton , ON L8S 4L7 , Canada
| | - A Mishra
- School of Engineering , University of California, Merced , Merced , California 95343 , United States
| | - M Torabi
- School of Engineering , University of California, Merced , Merced , California 95343 , United States
| | - M Ahmadlouydarab
- Faculty of Chemical and Petroleum Engineering , University of Tabriz , Tabriz , Iran
| | - Z Li
- Department of Mechanical Engineering , Clemson University , Clemson , South Carolina 29634 , United States
| | - J Palko
- School of Engineering , University of California, Merced , Merced , California 95343 , United States
| | - Y Ma
- School of Engineering , University of California, Merced , Merced , California 95343 , United States
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Montajab F, Torabi M. Effect of personality type on internet anxiety in Kerman Dental School students (2015-2016). J Fundam and Appl Sci 2017. [DOI: 10.4314/jfas.v9i1s.735] [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: 11/17/2022] Open
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Jayawardene WP, Lohrmann D, Dickinson S, Talagala S, Torabi M. Clinical measures of obesity and cumulative cardiometabolic risk in adolescents. Clin Obes 2017; 7:11-21. [PMID: 28028931 DOI: 10.1111/cob.12171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/27/2016] [Accepted: 11/17/2016] [Indexed: 12/18/2022]
Abstract
Obesity tracks from childhood to adulthood most strongly of all cardiometabolic risk factors. To determine relationship of body mass index (BMI) and waist circumference (WC) with cardiometabolic risk (dyslipidemia, hyperglycemia and elevated blood pressure) in a large U.S. population ages 12-19 and demographic subgroups. Pooled 1999-2014 National Health and Nutrition Examination Survey data were analyzed (N = 23 438). In addition to standard cutoffs of BMI and WC, risk levels were identified for each laboratory variable: HDL-cholesterol, LDL-cholesterol, triglycerides, total cholesterol (category = lipids); fasting glucose, glycated haemoglobin (category = glucose); systolic/diastolic pressures (category =blood pressure). Within each category, being high-risk on any of the variables was high-risk; being borderline-risk on any, without being high-risk on any, was borderline-risk. Obesity severity was strongly associated with increased cardiometabolic risk, with prevalence of borderline-risk greater than high-risk. Anthropometric indicators in males and Hispanics, versus females and Whites/Blacks, respectively, had stronger associations with cardiometabolic risks. BMI and WC performed well for identifying adolescents with at least one borderline-risk or high-risk level measure for lipids, glucose and blood pressure; relationship strength varying by gender and race/ethnicity. Thus, to prevent or better manage clinical diseases of adolescents with elevated BMI and/or WC, all recommended laboratory tests are warranted.
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Affiliation(s)
- W P Jayawardene
- Applied Health Science, School of Public Health Bloomington, Indiana University, Bloomington, IN, USA
| | - D Lohrmann
- Applied Health Science, School of Public Health Bloomington, Indiana University, Bloomington, IN, USA
| | - S Dickinson
- Epidemiology and Biostatistics, School of Public Health Bloomington, Indiana University, Bloomington, IN, USA
| | - S Talagala
- Global Health Communication Center, Indiana University-Purdue University Indianapolis, Bloomington, IN, USA
| | - M Torabi
- Applied Health Science, School of Public Health Bloomington, Indiana University, Bloomington, IN, USA
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Hassanpour H, Afzali A, Fatemi Tabatabaie R, Torabi M, Alavi Y. Cardiac renin-angiotensin system (gene expression) and plasma angiotensin II in chickens with T3-induced pulmonary hypertension. Br Poult Sci 2016; 57:444-50. [DOI: 10.1080/00071668.2016.1162284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- H. Hassanpour
- Department of Basic Sciences (Physiology Division), Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - A. Afzali
- Department of Basic Sciences (Physiology Division), Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | | | - M. Torabi
- Department of Physiology, Faculty of Veterinary Medicine, Shahid Chamran University, Ahvaz, Iran
| | - Y. Alavi
- Department of Basic Sciences (Physiology Division), Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
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Mehryar P, Shourijeh MS, Maqbool HF, Torabi M, Dehghani-Sanij AA. Muscle synergy analysis in transtibial amputee during ramp ascending activity. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2016:1676-1679. [PMID: 28324949 DOI: 10.1109/embc.2016.7591037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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
In developed countries, the highest number of amputees are elderly with transtibial amputation. Walking on inclined surfaces is difficult for amputees due to loss of muscle volume and strength thereby transtibial amputees (TA) rely on the intact limb to maintain stability. The aim of this study was to use the concatenated non-negative matrix factorization (CNMF) technique to calculate muscle synergy components and compare the difference in muscle synergies and their associated activation profiles in the healthy and amputee groups during ramp ascending (RA) activity. Healthy subjects' dominant leg and amputee's intact leg (IL) were considered for recording surface electromyography (sEMG). The muscle synergies comparison showed a reasonable correlation between the healthy and amputee groups. This suggests the central nervous system (CNS) activates the same group of muscles synergistically. However, the activation coefficient profile (C) results indicated statistically significant difference (p <; 0.05) in some parts of the gait cycle (GC) in healthy and amputee groups. The difference exhibited in activation profiles of amputee's IL could be due to the instability of the prosthetic leg during the GC which resulted in alteration of the IL muscles activations. This information will be useful in rehabilitation and in the future development of prosthetic devices by using the IL muscles information to control the prostheses.
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Adineh-Vand A, Torabi M, Roshani GH, Taghipour M, Feghhi SAH, Rezaei M, Sadati SM. Application of Adaptive Neuro-Fuzzy Inference System for Prediction of Neutron Yield of IR-IECF Facility in High Voltages. J Fusion Energ 2013. [DOI: 10.1007/s10894-013-9631-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Semsari S, Zakeri A, Sadighzadeh A, Khademzadeh S, Sedaghat M, Torabi M, Damideh V. Comparison of High-Energy He+ and D+ Irradiation Impact on Tungsten Surface in the IR-IECF Device. J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9540-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Haji Ebrahimi E, Amrollahi R, Sadighzadeh A, Torabi M, Sedaghat M, Sabri R, Pourshahab B, Damideh V. The Influence of Cathode Voltage and Discharge Current on Neutron Production Rate of Inertial Electrostatic Confinement Fusion (IR-IECF). J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9524-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Semsari S, Sadighzadeh A, Zakeri A, Khademzade S, Torabi M, Sedaghat M, Damideh V. The Effect of High Temperature He+ Implantation on Polycrystalline Tungsten in IR-IECF. J Fusion Energ 2011. [DOI: 10.1007/s10894-011-9481-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Torabi M, Rosychuk RJ. An examination of five spatial disease clustering methodologies for the identification of childhood cancer clusters in Alberta, Canada. Spat Spatiotemporal Epidemiol 2011; 2:321-30. [PMID: 22748230 DOI: 10.1016/j.sste.2011.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Accepted: 09/13/2010] [Indexed: 11/16/2022]
Abstract
Cluster detection is an important part of spatial epidemiology because it may help suggest potential factors associated with disease and thus, guide further investigation of the nature of diseases. Many different methods have been proposed to test for disease clusters. In this paper, we study five popular methods for detecting spatial clusters. These methods are Besag-Newell (BN), circular spatial scan statistic (CSS), flexible spatial scan statistic (FSS), Tango's maximized excess events test (MEET), and Bayesian disease mapping (BYM). We study these five different methods by analyzing a data set of malignant cancer diagnoses in children in the province of Alberta, Canada during 1983-2004. Our results show that the potential clusters are located in the south-central part of the province. Although, all methods performed very well to detect clusters, the BN and MEET methods identified local as well as general clusters.
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Affiliation(s)
- M Torabi
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada R3E 0W3
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Shahravan A, Jalali SP, Torabi M, Haghdoost AA, Gorjestani H. A histological study of pulp reaction to various water/powder ratios of white mineral trioxide aggregate as pulp-capping material in human teeth: a double-blinded, randomized controlled trial. Int Endod J 2011; 44:1029-33. [DOI: 10.1111/j.1365-2591.2011.01916.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zolfigol MA, Mallakpour S, Khazaiae A, Vaghaie RG, Torabi M. Calcium Hypochlorite as an Efficient Reagent for Oxidation of Urazoles under Mild Heterogeneous Conditions. Russian Journal of Organic Chemistry 2004. [DOI: 10.1023/b:rujo.0000044562.96808.06] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Herrera-Saldana R, Gomez-Alarcon R, Torabi M, Huber JT. Influence of synchronizing protein and starch degradation in the rumen on nutrient utilization and microbial protein synthesis. J Dairy Sci 1990; 73:142-8. [PMID: 2312880 DOI: 10.3168/jds.s0022-0302(90)78657-2] [Citation(s) in RCA: 140] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A 4 x 4 Latin square design with four multiparous cows in midlactation fitted with duodenal cannulae was used to determine the effect of synchronization of protein and starch degradation in the rumen on nutrient availability in lactating cows. As major starch and protein sources, diets contained: barley plus cottonseed meal; barley plus brewers dried grains; milo plus cottonseed meal; and milo plus brewers dried grains. Experimental periods were 12 d and consisted of 8 d adjustment and 4 d collection. Chromium oxide was used as the marker to determine digestibility and nutrient flow from the rumen. Microbial protein synthesis was estimated from nucleic acid content in duodenal samples. Apparent and corrected rumen digestibilities of DM, organic matter, CP, and starch were higher for diets containing barley than milo but were not affected by protein source. For diets containing barley and milo, starch digested postruminally averaged 820 and 2190 g/d and percentage digestibility was 70 and 77%. No difference among diets was found in DM, organic matter, and CP flow to the small intestine; however, microbial N synthesis was higher in diets containing barley than in diets containing milo.
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Higginbotham GE, Torabi M, Huber JT. Influence of dietary protein concentration and degradability on performance of lactating cows during hot environmental temperatures. J Dairy Sci 1989; 72:2554-64. [PMID: 2600224 DOI: 10.3168/jds.s0022-0302(89)79396-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To test effects of protein concentrations and degradability, 60 lactating Holstein cows in midlactation were offered the following diets during three trials between May and October in Tucson, AZ: high protein (18.4%), high degradability; high protein (18.5%), medium degradability; medium protein (16.1%), high degradability; and medium protein (16.1%), medium degradability. Diets comprised 39% alfalfa hay, 12% cottonseed hulls, 10% whole cottonseed, and 39% concentrate (DM) and concentrates contained 60, 40, 57, and 40% degradability, respectively, as determined by ficin assay. Rectal and ambient temperatures suggested that cows were under moderate to intense heat stress, as did group water intakes, which were increased about 15% by high degradability. Milk yields (3.5% FCM) and persistencies were lower for the high protein, high degradability diet than for all others. Mean DM intakes across treatments were quite high but were lower on high than medium protein; whereas ruminal ammonia and blood serum urea were higher on high protein. Milk composition, ruminal VFA, serum glucose, thyroxine, triiodothyronine, and cortisol were not affected by treatment.
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Affiliation(s)
- G E Higginbotham
- Department of Animal Sciences University of Arizona, Tucson 85721
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Abstract
Postweaning growth data, collected from a Hereford herd located in the Southwest, were used to estimate genetic parameters for weights and gains. The herd was maintained on unsupplemented range forage, and average weight losses from weaning to yearling age were 9% for bulls and 12% for heifers. Data were grouped into years with poor and good environments based on contemporary group means for gain from 8 to 12 mo. Postweaning growth data (12- and 20-mo weights, 8- to 12-mo gain and 12- to 20-mo gain) were analyzed by least squares methods with a model that included year of birth, sire within year of birth, age of dam and a covariate of age for 12- and 20-mo weights. Heritability estimates of 12- and 20-mo weights for bulls were .58 +/- .15 and .55 +/- .22 in good environments vs .32 +/- .11 and 1.09 +/- .15 in poor environments; for heifers these estimates were .19 +/- .08 and .35 +/- .12 in good environments vs .38 +/- .07 and .47 +/- .09 in poor environments. Heritability estimates of 8- to 12-mo and 12- to 20-mo gain for bulls were .32 +/- .14 and .51 +/- .24 in good environments vs .16 +/- .11 and .09 +/- .14 in poor environments; for heifers these estimates were .21 +/- .08 and .14 +/- .10 in good environments vs .10 +/- .06 and .44 +/- .10 in poor environments. Genetic correlations among the preweaning traits of birth and weaning weight and postweaning weight traits were positive and of a moderate to large magnitude, with the exception of birth and 12-mo weight in a poor environment (-.06 +/- .49). Genetic correlations between 8- to 12-mo gain and birth weight in poor environment and weaning weight in all environments were negative (range from -.06 +/- .33 to -.53 +/- .41). Genetic correlations among 12- and 20-mo weights were large and positive in all environments. Relationships among gains were more variable.
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Abstract
Data collected from 1957 through 1985 from a Hereford herd located in the Southwest were analyzed separately for each sex to evaluate the heritabilities of and genetic correlations among preweaning growth traits within groups of environmentally similar years. Data were grouped into years with poor, moderate and good environments based on contemporary group means for male calves' weaning weight. A total of 7,690 records were analyzed for birth weight, weaning weight and preweaning daily gain with a model that included year of birth, sire within year of birth, age of dam and a covariate of day of birth for birth weight or age at weaning for the weaning traits. Year of birth was a significant source of variation in all environments for all traits, accounting for more of the variation in the good and poor years than in moderate years. Heritability estimates for all traits were greater in good and moderate years than in poor years for bull calves. For heifers, however, estimates for weaning weight and preweaning daily gain were greater in the poor environment. Genetic correlations among birth weight and preweaning gain increased from the good environment to the poor environment (-.49 +/- .26 to .82 +/- .56 for male calves and -.09 +/- 2.6 to .46 +/- .25 for female calves) but phenotypic correlations were near zero in all environments.(ABSTRACT TRUNCATED AT 250 WORDS)
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Abstract
Dairy Herd Improvement data from 432 Holstein cows were analyzed to determine if coat color was a significant source of variation in the performance of first lactation cows in a hot climate. One of three coat color scores was subjectively assigned to first lactation Holstein cows. White coat color was less than 40% black (15% of the cows), mixed coat color was 40 to 60% black (42% of the cows), and black coat color was greater than 60% black (43% of the cows). Coat color by season of freshening interaction was not an important source of variation for any of the production traits studied; but cows were cooled during the first 130 d of lactation, perhaps removing any advantage white cows may have had during the summer months. The interaction between coat color and season of freshening was significant for days open and services per conception. White cows freshening in February and March required fewer services per conception and had fewer open days than the mixed and black cows. The heritability estimate of coat color was .22 using a paternal half-sib analysis. Additional studies, with more white cows represented, would be useful to elucidate the effects of coat color on production in a hot climate.
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Affiliation(s)
- V L King
- Biometrics and Information Systems Center, University of Nebraska, Lincoln 68583-0712
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Abstract
Udder capacity and udder shape were scored on 3- to 10-yr-old cows from a large Hereford herd. Udder capacity was scored from 1 (small) and 5 (large) and udder shape was scored from 1 (balanced, udder level with ground) to 5 (unbalanced, funnel-shaped udder). Data were analyzed within age of cow for udder capacity scores from 1 to 4 and for udder shape scores from 1 to 3 because of the limited number of observations in other categories. Year of birth of cow was a significant source of variation in both udder capacity and udder shape. Days in lactation (ranging from 81 +/- 23 d in 3-yr-old cows to 71 +/- 25 d in 4-yr-old cows) was an important source of variation for udder capacity; as lactation progressed udder capacity score declined. Body condition of the cow was an important source of variation for udder capacity in 3- and 4-yr-old cows; cows with more external body condition had larger udder capacity scores. The heritability estimates of udder capacity and udder shape for 3-yr-old cows were .12 +/- .14 and .15 +/- .16, respectively; the repeatability estimates of scores over years were .14 +/- .02 and .16 +/- .03, respectively. Residual correlations between udder capacity and udder shape were low, ranging from -.10 in 3-yr-old cows to .10 in 6-yr-old cows. Neither udder characteristic affected the number of years a cow remained in the herd, but cows with unbalanced udders had more udder defects.(ABSTRACT TRUNCATED AT 250 WORDS)
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