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Shen S, Jacob R, Steward J, Duan J, Varadarajulu S. SU-GG-J-59: Variation of Target Position Determined by Gold Fiducial Markers for Radiotherapy of Pancreatic Cancers. Med Phys 2010. [DOI: 10.1118/1.3468283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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202
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Shapiro WR, Judy K, Patel SJ, Lustig RA, Spicer K, Shen S, Lai J, Shan J. Open-label, dose confirmation, and dosimetry study of interstitial 131I-chTNT-1/B MAb for the treatment of recurrent glioblastoma multiforme (GBM): Final results. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.2039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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203
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Varadarajulu S, Trevino JM, Shen S, Jacob R. The use of endoscopic ultrasound-guided gold markers in image-guided radiation therapy of pancreatic cancers: a case series. Endoscopy 2010; 42:423-5. [PMID: 20232282 DOI: 10.1055/s-0029-1243989] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
While endoscopic ultrasound (EUS)-guided fiducial placement is technically feasible, its role in the delivery of image-guided radiation therapy (IGRT) is unclear. In this study, we evaluated the feasibility and safety of using EUS-guided fiducial markers for delivering IGRT in patients with pancreatic cancer. Following computed tomography (CT) simulation, a radiation therapy treatment plan was prepared for each patient. A kilovoltage (kv) image obtained before each treatment session was aligned with images generated during treatment planning, based on the position of fiducials. Radiation therapy was then delivered. Image analysis was also performed by alignment of bony landmarks (current standard of care). Daily shifts of fiducials between the two sets of images represented movement of the pancreas relative to the bony landmarks. EUS-guided fiducial placement was technically successful in all nine patients and no complications were encountered. The fiducials were easily identified for image fusion and IGRT was delivered successfully to all patients. The movement of the pancreas relative to bones was 0.2 cm (0.1-0.5 cm), 0.5 cm (0.2-1.5 cm), and 0.4 cm (0.2-0.9 cm) in the anterior-posterior, superior-inferior, and left-right axes, respectively. This technique may have significant clinical implications in terms of radiation dosimetry.
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Abed S, Shams P, Shen S, Santhanam V, Adds P, Uddin J, Manisali M. 21 Surgical anatomy of the caucasian orbit: a cadaveric study of the cranio-orbital foramen. Br J Oral Maxillofac Surg 2010. [DOI: 10.1016/s0266-4356(10)60022-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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205
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Shen S, Hsu AF, Foglia TA, Tu SI. Effectiveness of cross-linked phyllosilicates for intercalative immobilization of soybean lipoxygenase. Appl Biochem Biotechnol 2009; 69:79-90. [PMID: 18574729 DOI: 10.1007/bf02919390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/1996] [Accepted: 02/20/1997] [Indexed: 10/22/2022]
Abstract
A novel procedure was developed to intercalate enzymes into dispersed phyllosilicates that were cross-linked with silicate polymers formed by the hydrolysis of tetramethyl orthosilicate (TMOS). Lipoxygenase (LOX) intercalated into cross-linked phyllosilicates exhibited high enzymatic activity. The enzyme-phyllosilicate composite prepared by this procedure had an improved pore network. Alkylamines were used to occupy the charge sites of the phyllosilicate, which increased the hydrophobicity of the phyllosilicate and reduced charge-charge interaction between LOX and the phyllosilicate. The amount of macropores and the enzymatic activity of the lipoxygenase-phyllosilicate composites increased with an increase in the ratio of trimethylammonium (TMA)-phyllosilicate to cross-linking reagent TMOS. LOX intercalatively immobilized into phyllosilicates displayed good storage stability and reusability at ambient temperature.
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Schaner P, Caudell J, Shen S, DeLos Santos J, Spencer S, Kim R. Routine use of Intraoperative Ultrasound Guidance during Intracavitary Tandem Placement in Cervical Cancer: The University of Alabama at Birmingham Experience. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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207
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Duan J, Willey C, Shen S, Brezovich I. A Method to Overcome the Limitations of KVCT and MVCT in Treatment Planning for Patients with Bilateral Hip Prostheses. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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208
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Shen S, Spencer S, Fiveash J, Duan J, Jacob R, Keene K, Meredith R. Respiratory Motion of Different Thoracic Regions Determined by Prospective Gated CT for Treatment Planning. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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209
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Herndon C, Rosen M, Kashyap S, Cedars M, Shen S. Embryo cryopreservation is associated with a lower risk of monozygotic twinning among patients undergoing in vitro fertilization. Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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210
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Shen S, Yang X, Abeyta M, Choi T, Cedars M, Rosen M. Maximize day 3 frozen embryo's implantation potential using closed vitrification method. Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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211
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Letourneau J, Shen S, Yang X, Rosen M, Walsh T. How successful is sperm thaw after testicular sperm retrieval and cryopreservation? Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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212
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Tian B, Sun Z, Shen S, Wang H, Jiao J, Wang L, Hu Y, Hua Y. Effects of carotenoids from Deinococcus radiodurans on protein oxidation. Lett Appl Microbiol 2009; 49:689-94. [PMID: 19780959 DOI: 10.1111/j.1472-765x.2009.02727.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To evaluate the antioxidant effect of carotenoids from Deinococcus radiodurans on protein. METHODS AND RESULTS Deinococcus radiodurans strain R1 (ATCC 13939) and its mutant strain R1DeltacrtB were used for this study. The total carotenoids (R1ex) from D. radiodurans were obtained by extraction with acetone/methanol (7 : 2, by vol), and their antioxidant activity was measured using the DPPH (2,2-diphenyl-1-picrylhydrazyl) system. The protein oxidation level, in vitro and in the cell, was measured using the DNPH (2,4-dinitrophenyl hydrazine) method. The carotenoid extract R1ex scavenged 40.2% DPPH radicals compared to beta-carotene (31.7%) at a concentration of 0.5 mg ml(-1). The intracellular level of protein oxidation in mutant R1DeltacrtB, which does not contain carotenoid, was 0.0212 mmol mg(-1) protein which is significantly greater than that in the wild type (0.0169 mmol mg(-1) protein) following the treatment with H(2)O(2). The purified major carotenoid product (deinoxanthin) from the wild type showed a greater inhibition of oxidative damage in bovine serum albumin than lycopene or lutein. CONCLUSIONS Carotenoids prevent protein oxidation and contribute to the resistance to cell damage in D. radiodurans. SIGNIFICANCE AND IMPACT OF THE STUDY Our results provide the evidence that carotenoids can protect proteins in D. radiodurans against oxidative stress.
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Popple R, Brezovich I, Duan J, Shen S, Wu X. SU-DD-A1-06: RapidArc Patient Specific Quality Assurance: Comparison with DMLC IMRT. Med Phys 2009. [DOI: 10.1118/1.3181074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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214
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Huo S, Song C, Shan J, Shen S, Sun H. Mechanistic investigation of oxidation of glycine and alanine by bis(dihydrogen-tellurto)argentite(III) ion in alkaline medium. A kinetic study. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2009. [DOI: 10.1007/bf03245831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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215
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Shen S, Spencer S, Fiveash J, Duan J, Jacob R, Keene K, Meredith R, Popple R. SU-FF-J-102: Determining Residual Target Motion and Gating Window Width From Gated CT for Routine Gated Delivery. Med Phys 2009. [DOI: 10.1118/1.3181394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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216
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Popple R, Brezovich I, Duan J, Shen S, Wu X. SU-FF-T-253: Use of a Commercial Linac QA Device for RapidArc Routine Quality Assurance. Med Phys 2009. [DOI: 10.1118/1.3181729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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217
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Shen S, Nabors LB, Raizer JJ, Fiveash JB, Spies S, Costello R, O’Neill AM. Dosimetry study of a phase II multiple-dose intracavitary administration of 131I-TM601 in adult patients with recurrent high-grade glioma. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e13006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e13006 Background: Postoperative radiotherapy for glioma has been shown to improve survival with increased radiation doses. Dose escalation of external beam radiotherapy or brachytherapy is limited by normal brain radionecrosis. Radiolabeled targeting molecules can deliver localized radiation to tumor and reduce normal brain radionecrosis. TM601, or synthetic Chlorotoxin, is a peptide derived from scorpion venom that specifically binds to tumor cells. Here we report dosimetry results of an imaging sub-study of a phase II trial, in which weekly doses of 131I-TM601 were infused into surgically created tumor resection cavities for 3 or 6 weeks. Methods: Five out of 76 patients treated in a phase II trial were imaged after receiving 1, 3, or 6 doses of 40 mCi/0.8 mg 131I-TM601 intracavitarily. For each imaging study, 5 sequential SPECT images (1–168 hour) were registered with MRI to determine the 131I-TM601 radiation dose to the 2-cm tumor cavity margin. Five sequential body scans were also acquired to determine 131I-TM601 radiation dose to extra-cranial organs. Results: 131I-TM601 is a rapidly penetrating and clearing radiolabeled peptide. The median residual activity in the cavity at 7 days post injection was 8.4%. Median radiation dose to the cavity margin was 121 cGy/mCi and ranged 52- 338 cGy/mCi in 5 subjects. The median coefficient of variation (intra-patient inter-fraction) for the 2-cm margin dose was 14.7% and ranged 7.1–18.9%. Median tumor cavity volume was 11.4 mL, and ranged 5.2 - 35.5 mL. There was no observed correlation between the 2-cm margin dose and the cavity volume. Median radiation dose to thyroid, kidneys, red marrow, and body was 8.3, 1.3, 0.4, and 0.6 cGy/mCi, respectively. Conclusions: Radiation dose ratio for 2-cm cavity margin-to-normal tissues was quite high. While intra-patient reproducibility was relatively good, cumulative effect of the residual activity was only meaningful within a week. These results support the multi-dose fractionation scheme for 131I-TM601 to minimize normal tissue toxicity, including radiation necrosis, and extend continuous irradiation to clinical or sub-clinical residual tumor cells after surgery. [Table: see text]
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218
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Gribbin TE, Senzer N, Raizer JJ, Shen S, Nabors LB, Wiranowska M, Fiveash JB. A phase I evaluation of intravenous (IV) 131I-chlorotoxin delivery to solid peripheral and intracranial tumors. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e14507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14507 Background: Pre-clinical studies demonstrate TM601 binding to glioblastoma, melanoma, and other tumor types in vitro and in vivo (human xenograft tumors in mice). Here we report imaging and safety data from a Phase I clinical trial in patients with recurrent metastatic somatic and/or cerebral solid tumors that received IV 131I-TM601. Methods: Patients received an IV imaging test dose of 10 mCi/0.2mg 131I-TM601. Subjects not showing tumor localization, received a second imaging test dose of 20 mC/0.4mg 131I-TM601. Subjects without localization at either dose were dropped from study; patients showing tumor localization without toxicity then received a 30 mCi/0.6mg 131I-TM601 IV injection. The primary objectives were to: 1) determine whole body localization and dosimetry, 2) estimate the maximum tolerated dose based on normal tissue dosimetry and 3) determine the acute toxicity of IV 131I-TM601. Results: A total of 44 evaluable patients received IV doses of 131I-TM601 without dose-limiting toxicity. 31/44 (70%) showed tumor specific uptake on follow-up gamma camera or SPECT imaging. Tumor-specific uptake was observed in patients with malignant glioma (7/8), metastatic melanoma (7/7), non-small cell lung cancer (3/4), colon cancer (6/7), pancreatic cancer (2/3), prostate cancer (2/2), breast cancer (1/4) and in one evaluable patient each with transitional cell carcinoma, pleomorphic xanthoastrocytoma and metastatic paraganglioma. Notably, all patients with metastatic cerebral disease showed tumor-specific uptake of systemically injected 131I-TM601. No uptake was seen in CNS lymphoma (n=1), ovarian (n=2), small cell lung (n=2), or medulllary thyroid cancers (n=1). Conclusions: Tumor-specific uptake of IV 131I-TM601 in primary and metastatic (including brain) solid tumors suggests that further dose escalation is warranted. Notably, IV injected 131I-TM601 crossed the blood brain barrier. Based on normal tissue dosimetry from this study, future clinical trials will evaluate safety and therapeutic efficacy in patients with recurrent glioma and metastatic melanoma at doses up to 100 mCi 131I-TM601 (maximum single dose). [Table: see text]
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Ma S, Shen S, Lee H, Eriksson M, Zeng X, Xu J, Fandrick K, Yee N, Senanayake C, Grinberg N. Mechanistic studies on the chiral recognition of polysaccharide-based chiral stationary phases using liquid chromatography and vibrational circular dichroism. J Chromatogr A 2009; 1216:3784-93. [DOI: 10.1016/j.chroma.2009.02.046] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2008] [Revised: 02/09/2009] [Accepted: 02/16/2009] [Indexed: 10/21/2022]
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220
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Pang J, Shen S, Pan WR, Jones IR, Rozen WM, Taylor GI. PR47P�THE ARTERIAL SUPPLY OF THE PATELLAR TENDON: ANATOMICAL STUDY WITH CLINICAL IMPLICATIONS FOR KNEE SURGERY. ANZ J Surg 2009. [DOI: 10.1111/j.1445-2197.2009.04927_47.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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221
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Monaghan M, Shen S, Kim RY. Maximal 3-D dose to the whole bladder versus bladder wall in image-guided high-dose-rate intracavitary brachytherapy planning with bladder distension for cervical cancer. Brachytherapy 2009. [DOI: 10.1016/j.brachy.2009.03.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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222
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Wang Z, Ma Q, Liu Q, Yu H, Zhao L, Shen S, Yao J. Blockade of SDF-1/CXCR4 signalling inhibits pancreatic cancer progression in vitro via inactivation of canonical Wnt pathway. Br J Cancer 2008; 99:1695-703. [PMID: 19002187 PMCID: PMC2584946 DOI: 10.1038/sj.bjc.6604745] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Revised: 08/12/2008] [Accepted: 09/29/2008] [Indexed: 11/29/2022] Open
Abstract
Extra-pancreatic metastasis is a difficult problem for surgical intervention in pancreatic cancer. CXC chemokine receptor 4 (CXCR4) was considered to have an important role in this process. We hypothesized it may contribute to the pancreatic cancer progression through influencing canonical Wnt pathway. The purpose of this study was to examine the functional role of CXCR4 in the progression of pancreatic cancers and explore the possible mechanism. To this end, the relation between CXCR4 and clinical characteristics was analysed. shRNA against CXCR4 was applied to disrupt the SDF-1/CXCR4 signal transduction pathways in pancreatic cancer cell lines. Our results showed that overall survival in the case of patients positive for CXCR4 expression was significantly lower than that in the case of patients negative for CXCR4 expression. Notably, in vitro studies we observed that the abrogation of CXCR4 could obviously influence the pancreatic cancer cell phenotype including cell proliferation, colony formation, cell invasion and also inhibit the TOPflash activity. In addition, Wnt target genes and mesenchymal markers such as Vimentin and Slug were also inhibited in CXCR4 knockdown cells. Collectively, these data reported here demonstrate CXCR4 could modulate the canonical Wnt pathway and perhaps be a promising therapeutic target for pancreatic cancer progression.
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Shen S, Zhao Y, Yang W, Xu L, Sun Z, Chen X, Ji T, Zhang C. Decreased nerve distribution in mixed venous-lymphatic malformation. Int J Oral Maxillofac Surg 2008; 37:1106-10. [PMID: 18945592 DOI: 10.1016/j.ijom.2008.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Revised: 05/15/2008] [Accepted: 09/01/2008] [Indexed: 10/21/2022]
Abstract
In order to investigate the nerve distribution in mixed venous-lymphatic malformations (MVLMs), 57 postoperative patients diagnosed with MVLMs of the tongue were selected. Immunohistochemistry staining for neurofilament (NF) was used to detect sensory nerve fibers. Distribution of NF in samples from MVLMs was compared with distribution of NF in normal tongue tissue, venous malformations, lymphatic malformations and venular malformations. Results showed that the number of NF-positive nerve fibers in MVLMs was comparable to that in venous malformations and lymphatic malformations. The number of nerve fibers in MVLMs was significantly lower than in normal tissues. NF distribution in MVLMs was not affected by the patient's age or the coexistence of infection. These data suggest that the decreased distribution of sensory nerve fibers in MVLMs may be involved in the pathogenesis of MVLM of the tongue.
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224
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Duan J, Fiveash J, Shen S, De Los Santos J, Spencer S, Keene K, Popple R. Factors Impacting Patient Intrafractional Motion during Spinal Radiosurgery with Tomotherapy. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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225
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Kim R, Shen S, De Los Santos J, Spencer S. Factors Affecting ICRU Point Dose and 3-D Volume Dose for Organs at Risk in Image-based Intracavitary Brachytherapy Planning for Cervical Cancer. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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