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排序方式: 共有154条查询结果,搜索用时 62 毫秒
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Mahboudi Somayeh Moosavi-Nasab Marzieh Kazemi Bahram Rahimpour Azam Eskandari Mohammad Hadi Mohammadian Omid Shams Forough 《Molecular biology reports》2021,48(5):4405-4412
Molecular Biology Reports - Monoclonal antibodies (mAbs) are widely employed as invaluable therapeutics for a vast number of human disorders. Several approaches have been introduced for the... 相似文献
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Mirbolook Atena Rasouli-Sadaghiani MirHassan Sepehr Ebrahim Lakzian Amir Hakimi Mohammad 《Journal of Plant Growth Regulation》2021,40(2):831-847
Journal of Plant Growth Regulation - Plants require optimum amounts of nutrients for suitable growth and yield production. Accordingly, the most efficient methods of fertilization, including the... 相似文献
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Mohammad Hashemi Abdolkarim Moazeni-roodi Farshid Arbabi Aliakbar Fazaeli Ebrahim Eskandari Nasab Mohsen Taheri 《Nucleosides, nucleotides & nucleic acids》2013,32(5):401-410
Several studies have focused on the RAGE genetic background and have demonstrated that its polymorphisms affect the receptor's activity, expression, and downstream signaling. However, there is only little information regarding RAGE polymorphism in breast cancer. In the present study, the authors studied RAGE polymorphisms in 71 patients with breast cancer and 93 healthy women. RAGE –374T/A, –429T/C, and 63 bp Ins/del polymorphisms were analyzed using a hexaprimer amplification refractory mutation system PCR (H-ARMS-PCR). The results showed that RAGE polymorphisms are not associated with breast cancer in the current study population. Larger studies are required to confirm these data in other populations. 相似文献
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Yves Pauchard Thomas Fitze Diego Browarnik Amiraslan Eskandari Irene Pauchard William Enns-Bray 《Computer methods in biomechanics and biomedical engineering》2016,19(16):1693-1703
In this study, we propose interactive graph cut image segmentation for fast creation of femur finite element (FE) models from clinical computed tomography scans for hip fracture prediction. Using a sample of N = 48 bone scans representing normal, osteopenic and osteoporotic subjects, the proximal femur was segmented using manual (gold standard) and graph cut segmentation. Segmentations were subsequently used to generate FE models to calculate overall stiffness and peak force in a sideways fall simulations. Results show that, comparable FE results can be obtained with the graph cut method, with a reduction from 20 to 2–5 min interaction time. Average differences between segmentation methods of 0.22 mm were not significantly correlated with differences in FE derived stiffness (R2 = 0.08, p = 0.05) and weakly correlated to differences in FE derived peak force (R2 = 0.16, p = 0.01). We further found that changes in automatically assigned boundary conditions as a consequence of small segmentation differences were significantly correlated with FE derived results. The proposed interactive graph cut segmentation software MITK-GEM is freely available online at https://simtk.org/home/mitk-gem. 相似文献
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Meghdad Abdollahpour-Alitappeh Majid Lotfinia Tohid Gharibi Jalal Mardaneh Behrouz Farhadihosseinabadi Pegah Larki Babak Faghfourian Koushan Sineh Sepehr Kazem Abbaszadeh-Goudarzi Ghasem Abbaszadeh-Goudarzi Behrooz Johari Mohammad Reza Zali Nader Bagheri 《Journal of cellular physiology》2019,234(5):5628-5642
Targeted delivery of therapeutic molecules into cancer cells is considered as a promising strategy to tackle cancer. Antibody–drug conjugates (ADCs), in which a monoclonal antibody (mAb) is conjugated to biologically active drugs through chemical linkers, have emerged as a promising class of anticancer treatment agents, being one of the fastest growing fields in cancer therapy. The failure of early ADCs led researchers to explore strategies to develop more effective and improved ADCs with lower levels of unconjugated mAbs and more-stable linkers between the drug and the antibody, which show improved pharmacokinetic properties, therapeutic indexes, and safety profiles. Such improvements resulted in the US Food and Drug Administration approvals of brentuximab vedotin, trastuzumab emtansine, and, more recently, inotuzumab ozogamicin. In addition, recent clinical outcomes have sparked additional interest, which leads to the dramatically increased number of ADCs in clinical development. The present review explores ADCs, their main characteristics, and new research developments, as well as discusses strategies for the selection of the most appropriate target antigens, mAbs, cytotoxic drugs, linkers, and conjugation chemistries. 相似文献
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Zampighi GA Loo DD Kreman M Eskandari S Wright EM 《The Journal of general physiology》1999,113(4):507-524
Electrophysiological and morphological methods were used to study connexin50 (Cx50) expressed in Xenopus laevis oocytes. Oocytes expressing Cx50 exhibited a new population of intramembrane particles (9.0 nm in diameter) in the plasma membrane. The particles represented hemichannels (connexin hexamers) because (a) their cross-sectional area could accommodate 24 +/- 3 helices, (b) when their density reached 300-400/microm2, they formed complete channels (dodecamers) in single oocytes, and assembled into plaques, and (c) their appearance in the plasma membrane was associated with a whole-cell current, which was activated at low external Ca2+ concentration ([Ca2+]o), and was blocked by octanol and by intracellular acidification. The Cx50 hemichannel density was directly proportional to the magnitude of the Cx50 Ca2+-sensitive current. Measurements of hemichannel density and the Ca2+-sensitive current in the same oocytes suggested that at physiological [Ca2+]o (1-2 mM), hemichannels rarely open. In the cytoplasm, hemichannels were present in approximately 0.1-microm diameter "coated" and in larger 0.2-0.5-microm diameter vesicles. The smaller coated vesicles contained endogenous plasma membrane proteins of the oocyte intermingled with 5-40 Cx50 hemichannels, and were observed to fuse with the plasma membrane. The larger vesicles, which contained Cx50 hemichannels, gap junction channels, and endogenous membrane proteins, originated from invaginations of the plasma membrane, as their lumen was labeled with the extracellular marker peroxidase. The insertion rate of hemichannels into the plasma membrane (80, 000/s), suggested that an average of 4,000 small coated vesicles were inserted every second. However, insertion of hemichannels occurred at a constant plasma membrane area, indicating that insertion by vesicle exocytosis (60-500 microm2 membranes/s) was balanced by plasma membrane endocytosis. These exocytotic and endocytotic rates suggest that the entire plasma membrane of the oocyte is replaced in approximately 24 h. 相似文献