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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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Shen S, Duan J, Spencer S, Fiveash J, Ye S, Wu X, Popple R, Pareek P, Brezovich I. SU-FF-J-114: Reduction of Respiratory Motion Using Diaphragm Compression and Gating for Hypofractionated Radiotherapy of Lung and Liver Cancer. Med Phys 2006. [DOI: 10.1118/1.2240890] [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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Duan J, Shen S, Popple R, Wu X, Pareek P, Brezovich I. SU-FF-T-189: Dosimetric Figures-Of-Merit Based Comparison of Three IMRT Modalities: Helical Tomotherapy, Sequential Tomotherapy and DMLC-IMRT. Med Phys 2006. [DOI: 10.1118/1.2241113] [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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Ye S, Shen S, Brezovich I, Parsai E. SU-FF-T-16: A Genetic-Stochastic Approach to Volumetric Dose Optimization for Image-Based Brachytherapy: Application to Breast Balloon Brachytherapy. Med Phys 2006. [DOI: 10.1118/1.2240921] [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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255
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Wang L, Yu WM, He C, Chang M, Shen M, Zhou Z, Zhang Z, Shen S, Liu TT, Hsiao KJ. Long-term outcome and neuroradiological findings of 31 patients with 6-pyruvoyltetrahydropterin synthase deficiency. J Inherit Metab Dis 2006; 29:127-34. [PMID: 16601879 DOI: 10.1007/s10545-006-0080-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2005] [Accepted: 06/14/2005] [Indexed: 10/24/2022]
Abstract
Tetrahydrobiopterin (BH(4)) deficiency is an autosomal recessive disorder caused by enzyme defects in the biosynthesis or recycling of BH(4). Patients with BH(4) deficiency present with severe neurological signs and symptoms and require a different treatment from classical phenylketonuria. During the last 12 years, 31 cases of BH(4) deficiency were identified in our department. They were all classified as 6-pyruvoyl-tetrahydropterin synthase (PTPS) deficiency. They were diagnosed at the ages of 2.5-48 months and treated with BH(4), L-dopa and 5-hydroxytryptophan immediately after diagnosis. The average development quotients (DQ) at diagnosis and after treatment for more than 3 years were 53+/- 16, and 78+/- 15, respectively. A significant negative correlation was observed between the level of the DQ and the age at which treatment was commenced (r = -0.751, p = 0.002). Developmental profiles were uneven. Language, adaptability and at later age mathematics were particularly weak areas. Only two patients achieved a good performance in mathematics. Eleven patients who were treated with drugs from ages of 2.9-48 months had neuroradiological scanning. Computed tomography disclosed calcification in lentiform nuclei in one patient and magnetic resonance imaging disclosed delayed myelination and abnormal high intensity signal in cerebral white matter in all of them. Even though most of abnormalities were reversible, small patchy or spotted areas were still present on these regions after treatment for 10-46 months. In summary, our study supports the substantial efficacy of the current therapeutic approach in PTPS deficiency of normalizing amine neurotransmitters with three drugs as early as possible. For the first time, calcifications could be detected in patients with PTPS deficiency. Abnormalities in white matter on magnetic resonance imaging were not related to clinical manifestations and most were reversible.
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Shen S, Ramer R, Banciu M, Mansour R. Design and realisation of star-geometry dual-mode bandpass filter. OPTICS EXPRESS 2005; 13:9753-9757. [PMID: 19503182 DOI: 10.1364/opex.13.009753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A design of a planar dual-mode filter is proposed and developed for satellite and wireless communication systems. The novelty of the proposed structure consists of replacing simple diagonal design with a starlike one. This offers the ability of controlling the central frequency and the bandwidth. The filter was implemented on Rogers substrate with 10.8 dielectric constant. The proposed filter structure is 37% smaller in size in comparison with traditional dual mode filters.
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Shen S, Forero A, Meredith R, LoBuglio A. Impact of Full Dose of Rituximab on Pharmacokinetics and Dosimetry of Zevalin for Patients with Non-Hodgkin’s Lymphoma. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.725] [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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Shen S, Rosen M, Dobson A, McCulloch C, Rinaudo P, Cedars M. While Day 3 Embryo Fragmentation Significantly Impacts Implantation, it Has No Impact on Clinical Pregnancy Loss. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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259
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Friedman B, Rosen M, Shen S, Dobson A, Shaline L, Cedars M. The Effect of a Vanishing Twin on Perinatal Outcomes. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rosen M, Shen S, Dobson A, Yang X, Cedars M, Fujimoto V. Two Strategies Are Compared to Assess Cumulative Pregnancy Following Pronuclear Freeze Thaw Cycles. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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261
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Shen S, Rosen M, Dobson A, Choi T, Zhao J, Cedars M. Improved ICSI Fertilization: Optimizing Injection Technique and Outcome. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.1254] [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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262
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Rosen M, Shen S, Dobson A, McCulloch C, Rinaudo P, Cedars M. The Importance of Follicle Size During Ovarian Stimulation. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.233] [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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Tarry W, Fisher M, Shen S, Mawhinney M. Candida albicans: the estrogen target for vaginal colonization. J Surg Res 2005; 129:278-82. [PMID: 16111702 DOI: 10.1016/j.jss.2005.05.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2005] [Revised: 04/28/2005] [Accepted: 05/23/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Estradiol (E(2)) stimulates colonization of the vagina by Candida albicans. Although this yeast expresses an estrogen-binding protein (EBP), the cellular target for estrogenic modulation of this infection is unresolved. Findings support direct E(2)-induced C. albicans growth as well as indirect effects via E(2)-induced changes in the vaginal epithelium. Our primary goal was to pursue the issue of direct versus indirect estrogen action on vaginal candidiasis using diethylstilbestrol (DES), an efficacious mammalian estrogen receptor agonist, which exhibits no detectable affinity for the EBP of C. albicans. METHODS We used both in vitro and in vivo experimentation with an EBP-positive strain of C. albicans isolated from the human vagina. Ligand-binding studies were performed with steroidal and nonsteroidal estrogens and anti-estrogens using the soluble EBP from both the yeast and the rat uterus. Mature ovariectomized rats were treated with either E(2) or DES for 7 days before and after C. albicans inoculation into the vaginas. Subsequent estrogen-sensitive colonization was quantified based on cultures of vaginal homogenates on Sabouraud dextrose (SD) agar pour plates. RESULTS We confirmed that our isolate of C. albicans contained a high-affinity EBP, with no detectable affinity for DES. Vaginal colonization by C. albicans was 8.6-fold greater in response to in vivo treatment with E(2) than with the comparable dose regimen of DES. CONCLUSIONS The mechanism for estrogen-sensitive vaginal colonization by C. albicans includes a functional ligand-EBP interaction within the yeast.
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Yilmaz A, Shen S, Adelson DL, Xavier S, Zhu J. Annotation of the chicken IL10 gene cluster and effects of lipopolysaccharide stimulation on IL10 gene expression. Anim Genet 2005; 36:263-5. [PMID: 15932414 DOI: 10.1111/j.1365-2052.2005.01264.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sha YF, Shen S, Duan GL. Rapid determination of tramadol in human plasma by headspace solid-phase microextraction and capillary gas chromatography-mass spectrometry. J Pharm Biomed Anal 2005; 37:143-7. [PMID: 15664754 DOI: 10.1016/j.jpba.2004.09.050] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2004] [Revised: 09/29/2004] [Accepted: 09/30/2004] [Indexed: 11/23/2022]
Abstract
A simple, rapid and sensitive method for determination of tramadol in plasma samples was developed using headspace solid-phase microextraction (HS-SPME) and gas chromatography with mass spectrometry (GC-MS). The optimum conditions for the SPME procedure were: headspace extraction on a 65-microm polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber; 0.5 mL of plasma modified with 0.5 mL of sodium hydroxide (0.1 M); extraction temperature of 100 degrees C, with stirring at 2000 rpm for 30 min. The calibration curve showed linearity in the range of 1-400 ng mL(-1) with regression coefficient corresponding to 0.9986 and coefficient of the variation of the points of the calibration curve lower than 10%. The detection limit for tramadol in plasma was 0.2 ng mL(-1). The proposed method was successfully applied to determination of tramadol in human plasma samples from 10 healthy volunteers after a single oral administration.
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Sonpavde G, Yu J, Smith C, Shen S, Weiss H, Lerner SP. Efficacy of selective estrogen receptor modulators (SERMs) in a murine xenograft model bearing human bladder cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Shen S, Duan J, Spencer S, Fiveash J, Russo S, Bonner J, Ye S, Popple R, Pareek P, Brezovich I. SU-FF-J-123: Residual Tumor Motion in Respiratory Gated CT Treatment Planing. Med Phys 2005. [DOI: 10.1118/1.1997669] [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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Duan J, Shen S, Brezovich I, Kim R, Popple R, Ye S, Wu X, Pareek P. SU-EE-A1-04: Integrated Complementary IMRT Combined with Image-Guided HDR Brachytherapy for Cancers of the Uterine Cervix. Med Phys 2005. [DOI: 10.1118/1.1997474] [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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Shen S, Duan J, Ye S, Breitz H. MO-D-I-609-07: Combined Scatter Subtraction and Digital Restoration of Ho-166 Images for Quantification. Med Phys 2005. [DOI: 10.1118/1.1998243] [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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Li L, Shen S, Jiang P, Hong J, Fan J, Huang W. Usage of an intronic promoter for stable gene expression in Saccharomyces cerevisiae. Lett Appl Microbiol 2005; 40:347-52. [PMID: 15836737 DOI: 10.1111/j.1472-765x.2005.01691.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To construct expression vectors capable of switching promoters under different metabolic circumstances to obtain stable gene expression. METHODS AND RESULTS In this study, we designed a series of constructs for the expression of the chicken lactate dehydrogenase (cldh) gene under the control of galactose-inducible GAL1 promoter and the high glucose-inducible HXT1 promoter in Saccharomyces cerevisiae. In one construct, the HXT1 promoter was placed between artificial splicing sequences to function as an intronic promoter. We checked all constructs for the usage of promoters by reverse transcriptional polymerase chain reaction and assayed the expression level of the reporter gene under different culturing conditions. In the presence of galactose, when the GAL1 promoter was linked with the intronic HXT1 promoter, the cldh gene showed 1.5-fold activity compared with single GAL1 promoter, while in the presence of glucose, the construct showed over twofold activity compared with that without splicing sequences. CONCLUSION The intronic HXT1 promoter could be induced by the presence of high glucose concentration. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report detailing the use of an intronic promoter in the construction of stable expression vectors and the novel system could serve as a model of expression vectors for fermentation or other purposes.
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Shen S, Samaranayake LP, Yip HK. Coaggregation profiles of the microflora from root surface caries lesions. Arch Oral Biol 2005; 50:23-32. [PMID: 15598414 DOI: 10.1016/j.archoralbio.2004.07.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2004] [Indexed: 11/26/2022]
Abstract
Bacterial coaggregation reactions between different species and the auto aggregation of the same species are associated with the initiation and development of dental plaque and biofilms. As no such data is available on isolates from root caries lesions, we evaluated, by a visual, semi-quantitative scoring system and a spectrophotometric, quantitative assay, the coaggregation of 22 different wild-type microbial species comprising ten bacterial genera and a single Candida spp. The quantitative coaggregation assay we used proved to be a more sensitive method than the semi-quantitative, visual evaluation as the results yielded the percent coaggregation. Fusobacterium nucleatum, Lactobacillus acidophilus, Streptococcus bovis II/2 and Gemella morbillorum were observed having higher degrees of autoaggregation than the other examined strains. Significant levels of inter-species coaggregation was seen between: (1) Actinomyces spp. and Veillonella spp.; (2) Actinomyces israelii and Peptostreptococcus prevotii; (3) Campylobacter gracilis and Actinomyces spp.; (4) Prevotella intermedia and nine different species; and (5) Fusobacterium nucleatum and six other species. The single Candida albicans isolate did not coaggregate to a significant extent with any of the 21 bacterial isolates studied. Scanning electron microscopy observation of the coaggregation interactions between bacterial pairs having strong coaggregation reactions revealed varying adhesive patterns. Our findings on coaggregation amongst these isolates imply existence of multiple interactions between the coaggregation-inducing bacterial species in root caries. In particular, Actinomyces spp., Veillonella spp., Prevotella spp. and Fusobacterium spp. appear to play a significant role in this context.
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Purcell K, Schembri M, Shen S, Croughan M, Fujimoto V. IVF Predictor Variables Differ by Ethnicity. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.01.058] [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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Han X, Tu Z, Wang X, Shen S, Hou Y. Nonylphenol induced apoptosis in rat testis through the Fas/FasL pathway. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2004; 73:620-627. [PMID: 15389325 DOI: 10.1007/s00128-004-0473-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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Chen D, Cao R, Guo H, Chen G, Wang X, Shen S, Chen S. Pathogenesis and pathology of delayed xenograft rejection in pig-to-rhesus monkey cardiac transplantation. Transplant Proc 2004; 36:2480-2. [PMID: 15561288 DOI: 10.1016/j.transproceed.2004.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED It has been recognized that delayed xenograft rejection (DXR) is the major barrier to the acceptance of xenotransplantation after overcoming hyperacute rejection. OBJECTIVES This study sought to investigate the pathogenesis and pathology of delayed xenograft rejection following pig-to-rhesus monkey heart xenotransplantation. METHODS Heterotopic xenogeneic heart transplants in the abdominal cavity were performed using piglet donors to four monkey recipients. Complete complement depletion was achieved in the recipients with repetitive doses of high-activity cobra venom factor (Y-CVF). The recipients were immunosuppressed with a combination of cyclosporine, cyclophosphamide, and steroids. Sera were analyzed for C3 and C4 levels and complement activity and anti-pig endothelial xenoantibody. The grafts were examined histopathologically and immunohistochemically for C3, C4;C5b-9, IgM, IgG, tumor necrosis factor-alpha (TNF-alpha), intercellular adhesion molecule-1(ICAM-1), CD57(NK cells), CD68 (macrophages), CD4, and CD8. RESULTS Xenografts survived 8, 10, 13, and 13 days respectively, all developing DXR. Venous thrombosis was the outstanding feature within DXR xenografts, complicated by interstitial edema, local hemorrhage, myocardial necrosis, and mild to moderate cellular infiltration. The serum C3 levels and complement activity decreased to almost 0 from the day of transplantation due to treatment with Y-CVF. The C4 level began to decrease 2 to 4 days before the cardiac xenografts lost their function. Anti-pig endothelial xenoantibody also decreased after transplantation, slightly increasing during DXR. All rejected xenografts showed C3, C4, C5b-9, IgG, and IgM deposits to various degrees. Large numbers of macrophages (50% of total leukocytes) infiltrated the entire xenograft with a few natural killer cells (8% to 10%), as well as some CD4+ T cells (15%) and CD8+ T cells (25%). Upregulation of ICAM-1 on graft endothelial cells and TNF-alpha in the interstitium were also demonstrated in the rejected heart. CONCLUSION Both humoral and cell-mediated immunologic reactions may play important roles in the pathogenesis of DXR. Besides C3, C4, C5b-9, IgM, and IgG destroying the xenograft, NK cells, macrophages, and CD4+ and CD8+ T cells may further aggravate the development of DXR.
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Meredith R, Shen S, Robert F, Khazaeli M, Elliott D, Carey D, Wang W, Macey D, Schlom J, LoBuglio A. Effects of Adjuvant Chelator or Chemotherapy on Dosimetry of 90Y-CC49 in Lung Cancer Patients Using 111In-CC49 as a Tracer. ACTA ACUST UNITED AC 2004. [DOI: 10.2174/1567269043390645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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