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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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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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203
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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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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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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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207
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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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208
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Shen S, Yang X, Abeyta M, Benedict S, Rosen M, Cedars M. Vitrification using a closed cryo-top system significantly improves day 3 embryo survival compared to slow freezing. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1126] [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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Shen S, Spencer S, Bender L, Duan J. Routine IMRT and 3D Treatment Planning with SPECT Images for Preserving Functional Lung. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1389] [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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Yang X, Rosen M, Ho K, Choi T, Cedars M, Shen S. Coculture using cumulus cells significantly improves day 3 embryo cleavage, but not fragmentation. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1552] [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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Yang X, Rosen M, Abeyta M, Choi T, Cedars M, Shen S. Impact of smooth endoplasmic reticulum clusters (SER) in oocyte cytoplasm on embryo quality and pregnancy outcome. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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212
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Rosen M, Shen S, Huddleston H, Fujimoto V, Cedars M. What is diminished ovarian reserve (DOR) – reduced quantity vs. reduced quality? Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Moh MC, Zhang T, Lee LH, Shen S. Expression of hepaCAM is downregulated in cancers and induces senescence-like growth arrest via a p53/p21-dependent pathway in human breast cancer cells. Carcinogenesis 2008; 29:2298-305. [DOI: 10.1093/carcin/bgn226] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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214
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Manolescu C, Grinberg M, Field C, Ma S, Shen S, Lee H, Wang Y, Granger A, Chen Q, McCaffrey J, Norwood D, Grinberg N. Studies of the Interactions of Amino Alcohols Using High Performance Liquid Chromatography with Crown Ether Stationary Phases. J LIQ CHROMATOGR R T 2008. [DOI: 10.1080/10826070802279285] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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215
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Shen S, Spencer S, Bender L, Duan J. MO-E-AUD C-02: Incorporating SPECT Functional Lung Images in Routine Treatment Planning for Lung Cancer. Med Phys 2008. [DOI: 10.1118/1.2962391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Shen S, Mainprize J, Mawdsley G, Yaffe M. SU-GG-I-131: Non-Primary to Primary Ratio Measurements in a Digital Breast Tomosynthesis System. Med Phys 2008. [DOI: 10.1118/1.2961529] [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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Kranczioch C, Athanassiou S, Shen S, Gao G, Sterr A. Short-term learning of a visually guided power-grip task is associated with dynamic changes in EEG oscillatory activity. Clin Neurophysiol 2008; 119:1419-30. [DOI: 10.1016/j.clinph.2008.02.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Revised: 01/25/2008] [Accepted: 02/17/2008] [Indexed: 11/26/2022]
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218
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Duan J, Fiveash J, Shen S, Popple R. TH-C-AUD C-05: Assessment of Intrafractional Motion for Spinal Radiosurgery Patients by Multiple Onboard Megavoltage CT Scans During Treatment. Med Phys 2008. [DOI: 10.1118/1.2962851] [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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219
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Fiveash JB, Conry RM, Shen S. Tumor-specific targeting of intravenous 131I-chlorotoxin (131I-TM-601) in patients with metastatic melanoma. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.20003] [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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220
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Shen S, Lustig R, Judy KD, Fiveash JB, Shan JS. Open-label, dose confirmation and dosimetry study of Interstitial 131I-chTNT-1/B MAb for the treatment of recurrent glioblastoma multiforme (GBM). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.2072] [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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221
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Loutfy MR, Harris M, Raboud JM, Antoniou T, Kovacs C, Shen S, Dufresne S, Smaill F, Rouleau D, Rachlis A, Gough K, Lalonde R, Tsoukas C, Trottier B, Walmsley SL, Montaner JSG. A large prospective study assessing injection site reactions, quality of life and preference in patients using the Biojector vs standard needles for enfuvirtide administration. HIV Med 2008; 8:427-32. [PMID: 17760734 DOI: 10.1111/j.1468-1293.2007.00489.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To determine the severity of injection site reactions (ISRs), patient quality of life (QoL) and preference when enfuvirtide is administered by the Biojector (Bioject, Medical Technologies, Inc., Tualatin, OR, USA) relative to standard needles. METHODS A total of 201 HIV-positive patients on stable enfuvirtide-based therapy (n=184) or initiating such therapy (n=17) were evaluated prospectively after switching from standard needles to the Biojector system. Patients used needles for a minimum of 2 weeks prior to switching to the Biojector. Questionnaires to assess the incidence and severity of ISRs (31-item score) and QoL [Medical Outcomes Study HIV Health Survey (MOS-HIV)] were administered at baseline and following a minimum of 14 days of Biojector use. RESULTS The median changes in ISR score and number of ISRs following a median of 1.0 month [interquartile range (IQR) 0.9, 1.3] of Biojector use were -3 (IQR -7, 1) and -1 (IQR -3, 1), respectively. The severity of pain (P<0.0001), induration (P<0.0001), pruritus (P<0.0001), nodules (P<0.0001) and erythema (P<0.0001) all decreased with the Biojector. Administration of enfuvirtide with the Biojector was associated with an improved patient QoL (P<0.0001), and was preferred by 72% of patients. CONCLUSIONS Compared with needles, the Biojector was associated with a decreased severity of ISRs and improved QoL in patients taking enfuvirtide.
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Cai M, Shen S, Fang B, Shi J. The relationship between changes in occlusal forces and dentofacial morphology of skeletal class III malocclusal patients after tow jaw surgery. Int J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.ijom.2007.08.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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223
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Duan J, Shen S, Fiveash J, Brezovich I. Feasibility of Helical Tomotherapy for Lung Cancer Treatment: The Effect of Respiratory Motion on Imaging and Dose Delivery. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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224
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Lamb J, Shen S, Jalalian L, Yang X, Rosen M, Cedars M. Oocyte health: importance of the follicular microenvironment. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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225
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Shen S, Rosen M, Yang X, Choi T, Abeyta M, Cedars M. Ovarian aging: what do oocyte membrane characteristics tell us? Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.583] [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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226
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Huddleston H, Rosen M, Shen S, Cedars M, Fujimoto V. Are there ethnic differences in granulosa cell function? Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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227
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Dobson A, Balendran A, Rinaudo P, Cedars M, Shen S, Rosen M. Methylation pathway gene polymorphisms associate with in vitro fertilization (IVF) outcomes. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.139] [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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228
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Abeyta M, Shen S, Cedars M, Rinaudo P, Rosen M. Fertilization rates from conventional IVF insemination differ according to the number of eggs per drop. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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229
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Chihrin S, Antoniou T, Raboud J, Shen S, Govan V, Fletcher D, Rachlis A, Kovacs C, Crouzat F, Tilley D, Chang B, Saskin R, Loutfy MR. Risk factors for grade 3-4 liver enzyme elevation in HIV and hepatitis C coinfected patients on combination antiretroviral therapy. AIDS Patient Care STDS 2007; 21:469-78. [PMID: 17651028 DOI: 10.1089/apc.2006.0113] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Although coinfection with hepatitis C (HCV) is an established risk factor for hepatotoxicity in HIV-positive patients receiving combination antiretroviral therapy (cART), specific variables that may be predictive of severe hepatotoxicity among co-infected patients receiving cART remain poorly defined. A retrospective cohort study of HIV/HCV coinfected adults from two HIV treatment centers covering the period between December 1998 and December 2003 was conducted to address this question. The primary endpoint of the study was the occurrence of grade 3 or 4 elevation of serum alanine aminotransferase (ALT) during follow-up and the primary predictors of interest were specific antiretrovirals. One hundred five coinfected patients receiving cART for a median of 70 months (interquartile range [IQR], 37, 83) were included in the analysis. Twenty-three (22%) patients developed a grade 3 or 4 increase in serum ALT at least once in follow-up. In univariate analysis, current receipt of lopinavir/ritonavir (LPV/r) (odds ratio [OR] 3.09, 95% confidence interval [CI] 1.14-8.34, p = 0.03), baseline ALT (OR 1.01, 95% CI 1.00-1.02, p = 0.004), and current use of boosting ritonavir (OR 2.84, 95% CI 1.16-7.00, p = 0.02) were significantly associated with a grade 3 or 4 increase in serum ALT, although most patients receiving boosting ritonavir were on lopinavir/ritonavir based regimens. Patients receiving LPV/r had been previously exposed to significantly more antiretrovirals (p < 0.0001), protease inhibitors (p < 0.0001), and nucleoside analogues (p = 0.0009) compared to the rest of the cohort. Further research to better clarify risk factors for hepatotoxicity in coinfected patients is warranted given the challenges in treating this population.
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Shen S, Duan J, Popple R, Fiveash J, Spencer S, Wu X, Ye S, Pareek P, Brezovich I. SU-FF-J-78: 3-D Target Localization at the End of Expiration Prior to Respiration-Gated Radiotherapy Treatment. Med Phys 2007. [DOI: 10.1118/1.2760583] [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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Wu X, Spencer S, Fiveash J, Brezovich I, Duan J, Shen S, Young P. SU-FF-T-372: Registration of Frameless High-Field MRI to Low-Field Frame-Based MRI Images in Leksell Gamma-Knife (LGK) Radiosurgery. Med Phys 2007. [DOI: 10.1118/1.2761097] [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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232
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Duan J, Shen S, Popple R, Fiveash J, Wu X, Pareek P, Brezovich I. TH-C-AUD-03: Impact of Respiratory Motion On Helical Tomotherapy Dose Delivery: A Phantom Study with 3-D Volumetric Dose Measurements. Med Phys 2007. [DOI: 10.1118/1.2761662] [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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233
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Shen S, Xu Z, Qian X, Ding Y, Yu L, Liu B. Autogeneic rna-electroporated CD40-ligand activated b-cells from hepatocellular carcinoma patients induce CD8+ T-cell responses ex vivo. Exp Oncol 2007; 29:137-43. [PMID: 17704747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
UNLABELLED Since dendritic cells (DCs) constitute only 0.1-0.5% of human peripheral blood mononuclear cells (PBMCs), and generation of DCs from monocytes or stem cells is difficult and expensive, we choose B-lymphocytes as an alternative, cost-effective source of antigen presenting cells (APC). AIM To induce specific CTLs response ex vivo by CD40L activated B-cells (CD40-B) transfected with hepatocellular carcinoma (HCC) total RNA. METHODS To induce CD40-B PBMCs of patients with HCC were isolated by Ficoll technique and cultured in RMPI 1640 supplemented with 10% fetal calf serum (FCS), sCD40L (2 microg/ml), recombinant human interleukin-4 (IL-4) (4 ng/ml). The expression of CD80 and CD86 was evaluated by flow cytometry. The level of interleukin-12 (IL-12) produced by cultured B-lymphocytes was measured using enzyme-linked immunosorbent assay (ELISA). HCC patient's T-lymphocytes were obtained from PBMCs cultured in RMPI 1640 supplemented with 10% FCS, 2 ng/mL IL-4 and 10 ng/ml IL-7. CD40-B transfected with tumor total RNA isolated from HCC cells were used to induce specific CTL proliferation. The level of IFN-gamma was measured using ELISA and the expression of CD8 was determined by FCAS. Specific cytotoxicity was measured using MTT method. RESULTS The results show that the activated B-lymphocytes were easily expandable and formed large clones, and a high expression of CD80/CD86 and a high IL-12 secretion by CD40-B was registered. CD40-B transfected with tumor total RNA can induce CTLs to express CD8 and generate IFN-gamma at high levels. Compared to the control group, the specific cytotoxicity of CTLs was up-regulated. CONCLUSION These findings demonstrate that CD40-B-cells electroporated with total RNA derived from carcinoma cells can be used as alternative APC for the induction of antigen-specific CD8(+) T-cell responses, which might be used in HCC immunotherapy.
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Shen S, Sandham W, Granat M, Sterr A. Intensity Non-uniformity Correction of Magnetic Resonance Images Using a Fuzzy Segmentation Algorithm. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2005:3035-8. [PMID: 17282883 DOI: 10.1109/iembs.2005.1617114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Artifacts in magnetic resonance images can make conventional intensity-based segmentation methods very difficult, especially for the spatial intensity non-uniformity induced by the radio frequency (RF) coil. The non-uniformity introduces a slow-varying shading artifact across the images. Many advanced techniques, such as nonparametric, multi-channel methods, cannot solve the problem. In this paper, the extension of an improved fuzzy segmentation method, based on the traditional fuzzy c-means (FCM) algorithm and neighborhood attraction, is proposed to correct the intensity non-uniformity. Experimental results on both synthetic non-MR and MR images are given demonstrate the superiority of the algorithm.
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Iyengar S, Pritchett YL, Hall JA, Chappell AS, Wernicke JF, Goldstein DJ, Simmons RMA, Detke MJ, Shen S, D'Souza DN, Schneider E, Robinson MR. Die Zeit bis zum Ansprechen auf Duloxetin: Ergebnisse zur Übersicht über die Daten aus Zeitdauer bis zum Ansprechen aus präklinischen und klinischen Studien zu neuropathischen Schmerzen. DIABETOL STOFFWECHS 2007. [DOI: 10.1055/s-2007-982355] [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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Duan J, Spencer S, Shen S, De Los Santos J. 2424. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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237
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Psaila ND, Thomson RR, Bookey HT, Kar AK, Chiodo N, Osellame R, Cerullo G, Brown G, Jha A, Shen S. Femtosecond laser inscription of optical waveguides in Bismuth ion doped glass. OPTICS EXPRESS 2006; 14:10452-10459. [PMID: 19529444 DOI: 10.1364/oe.14.010452] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on the fabrication of high quality embedded channel waveguides inside Bi-doped silicate glass using femtosecond waveguide inscription. Waveguides are fabricated using both single and multi-scan fabrication techniques. Refractive index modifications of up to Deltan = 4.3 x 10(-3) are observed, allowing the fabrication of waveguides nearly mode-matched to telecom fibers. When optically pumped at 980 and 810 nm broadband fluorescence emission centered at 1.3 microm with a FWHM of up to 500 nm is detected.
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Dobson AT, Davis RM, Rosen MP, Shen S, Rinaudo PF, Chan J, Cedars MI. Methylenetetrahydrofolate reductase C677T and A1298C variants do not affect ongoing pregnancy rates following IVF. Hum Reprod 2006; 22:450-6. [PMID: 17053001 DOI: 10.1093/humrep/del396] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There is concern that IVF could compromise normal imprinting and methylation of DNA. Methylenetetrahydrofolate reductase (MTHFR) regulates the flow of folic acid-derived, one-carbon moieties for methylation and is critical to early embryonic development. Therefore, we hypothesized that common polymorphisms in MTHFR could associate with IVF outcome. METHODS MTHFR C677T and A1298C polymorphism genotyping was performed on 374 subjects for this study, representing 197 couples undergoing IVF in a university setting from July 2005 to January 2006. Analysis of variance (ANOVA), chi-square and/or multivariate analyses were used to assess whether these polymorphisms are associated with embryo quality or with ongoing pregnancy or spontaneous abortion rates. RESULTS Allele frequencies for C677T ( p=0.67, q=0.33) and A1298C ( p=0.71, q=0.29) were in Hardy-Weinberg equilibrium. The C677T and A1298C variants, either alone or in combination, did not associate with embryo quality or short-term pregnancy outcome. CONCLUSIONS The common polymorphisms in MTHFR are not associated with embryo quality, as defined by cell number or fragmentation score, or with short-term pregnancy outcomes. Therefore, in our population in which women receive adequate folic acid, MTHFR genotypes are not informative in explaining IVF failure. Further studies, however, examining birth outcomes and the other enzymes in the folic acid pathway are warranted.
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Abeyta M, Rosen M, Shen S, Choi T, Fujimoto V, Cedars M. P-690. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shefi S, Shen S, Rosen M, Turek P. P-601. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Shen S, Rosen M, Choi T, Yang X, Abeyta M, Cedars M. P-691. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abeyta M, Rosen M, Shen S, Lyapis A, Dobson A, Cedars M. P-143. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rosen M, Shen S, Dobson A, Rinaudo P, Huddleston H, Cedars M. O-88. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Benedict S, Shen S, Rosen M, Naverette M, Yang X, Cedars M. P-1004. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ezeh U, Rosen M, Shen S, Rinaudo P, Dobson A, Cedars M. P-126. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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McDonagh S, Rosen M, Shen S, Rinaudo P, Cedars M, Dobson A. P-237. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lyapis A, Rosen M, Shen S, Jalalian L, Turek P, Cedars M. P-627. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1000] [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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Popple R, Brezovich I, Fiveash J, Duan J, Shen S, Wu X. TU-D-ValA-06: Incorporation of Modulation Range Constraints Into a Gradient Search Algorithm for IMRT Optimization. Med Phys 2006. [DOI: 10.1118/1.2241575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Teh BS, Bloch C, Paulino AC, Doh L, Chiang S, Shen S, Baskin D, Jac J, Amato RJ. The treatment of primary and metastatic renal cell carcinoma (RCC) with stereotactic body radiation therapy (SBRT) and stereotactic radiosurgery (SRS). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.14572] [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
14572 Background: RCC is often regarded as a radio-resistant tumor. However, brain metastases from RCC have been successful treated with SRS. Therefore, metastases to extra-cranial sites may be treated with similar success using stereotactic body radiation therapy (SBRT), where image-guidance allows for the delivery of precise high dose radiation in a few fractions. We report our experience with SRS/SBRT in the management of primary and metastatic RCC. Methods: The image-guided Novalis radiation therapy system was used. Thirty patients with brain metastases were treated with SRS (16–22 Gy in a single fraction). Five of these patients underwent resection of their metastatic lesions after SRS and their pathology were reviewed. Twenty patients with extra-cranial metastatic lesions (orbits, head and neck, lung, mediatinum, sternum, clavicle, scapula, humerus, rib, spine, abdomen) and 2 patients with biopsy proven primary RCC (not surgical candidates), were treated with SBRT (24–32 Gy in 3–4 fractions over 1–2 weeks). All patients were immobilized in body cast and image-guidance was used for all fractions. 4D-CT was utilized in the treatment planning to assess tumor motion. Results: Of the 30 patients who received SRS to brain metastases, 25 showed decreasing or stable lesion size. Five patients showed an increase in size and underwent resection. Their pathology revealed necrosis in >99% of the specimen, with no viable RCC. Nineteen patients who received SBRT to extra-cranial metastases achieved symptom relief. One patient had local progression, yielding a local control rate of 95%. In the 2 patients with primary RCC, tumor size remained unchanged but their pain improved, and their renal function was unchanged post SBRT. There was no significant treatment related side-effect. Conclusions: Precise high dose radiation can cause significant tumor cell death in “radio-resistant” metastases from RCC. It also offers excellent local control and symptom palliation, without significant toxicity. Therefore, SBRT may represent a novel non-invasive, nephron-sparing option for the treatment of primary RCC as well as extra-cranial metastatic RCC. A prospective clinical trial using SBRT for primary and metastatic RCC is on-going. No significant financial relationships to disclose.
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