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SP-0356: 4D image acquisition: 4D-MRI based evaluation of moving lung tumour target volumes. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30666-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Chronic Disease Management - The Patient's Perspective. IRISH MEDICAL JOURNAL 2017; 110:511. [PMID: 28657256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A paucity of data exists on Irish patients' perspective of chronic disease management. This study explores patients' views on what is the most appropriate setting for their chronic disease management, the advantages and disadvantages of these settings, and where they get information on their condition. Semi-structured qualitative interviews were carried out with 24 patients. Three main themes emerged: Current Care Model, Health Literacy and Treatment Burden. Patients believe that the GP-patient relationship plays a pivotal role in the provision of chronic disease management. Health literacy and psychosocial burden were found to impact significantly on the lives of patients with chronic disease(s).
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EP-1174: Interobserver variation in CT vs. MRI based delineation of the lumpectomy cavity. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32424-0] [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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4
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Segmental arterial mediolysis (SAM): clinical presentation, angiographic manifestations and endovascular management. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.306] [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] Open
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MO-F-CAMPUS-J-05: Toward MRI-Only Radiotherapy: Novel Tissue Segmentation and Pseudo-CT Generation Techniques Based On T1 MRI Sequences. Med Phys 2015. [DOI: 10.1118/1.4925451] [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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SU-E-I-59: Virtual Phantom: A First Step to a Comprehensive Automated Quality Control Program for Magnetic Resonance Image Guided Applications. Med Phys 2015. [DOI: 10.1118/1.4924056] [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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A randomized controlled trial comparing customized versus standard headrests for head and neck radiotherapy immobilization in terms of set-up errors, patient comfort and staff satisfaction (ICORG 08-09). Radiography (Lond) 2015. [DOI: 10.1016/j.radi.2014.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Recanalization of chronic femoropopliteal deep venous thrombosis in patients suffering from post thrombotic syndrome: a safe and effective approach to improving quality of life. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Rheolytic-Accelerated Pharmacomechanical Directional “RAPID” Thrombectomy Technique: A Method for Rapid Clot Removal with Reduced Need for Catheter-Directed Thrombolysis in Patients with Acute DVT. J Vasc Surg Venous Lymphat Disord 2014; 2:117-8. [DOI: 10.1016/j.jvsv.2013.10.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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OC-0181: Optimization of a novel multi-echo 3D UTE volumetric sequence for tissue segmentation in MRI-only RT planning. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30286-3] [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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MRI-Based Radiation Therapy Planning of Prostate Cancer: Clinical Feasibility and Assessment of Dosimetric Accuracy for Different Treatment Techniques. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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SU-E-J-177: Comparison Between VMAT CT Planning and Segmented MRI Images with Assigned Bulk Density: A Dosimetric Study for Intact Prostate Patients. Med Phys 2013. [DOI: 10.1118/1.4814389] [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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Preliminary experience of drug-eluting bead transcatheter arterial chemoembolization for unresectable cholangiocarcinoma. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.380] [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] Open
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OC-0347: Adjuvant RT for Gastric Cancer: A dosimetric comparison of 3DCRT, RapidArcÆ and conventional IMRT techniques. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32653-0] [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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OC-0074: Radiation therapist led quality assurance of a CT-MRI SIM localisation protocol for patients undergoing H&N RT. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32380-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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EP-1287: Software module for the characterization of geometric distortion in MRI-SIM using a large field of view phantom. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33593-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Accelerated lymphangiography: an alternative method to evaluate the lymphangitic system. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2012.05.029] [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] Open
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Abstract No. 430: Accelerated lymphangiography: an alternative method to evaluate the lymphangitic system. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2012.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Abstract No. 290: Aggressive management of chronic deep venous thrombosis: technical and clinical outcomes. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Gefitinib (ZD1839) Decreases Vascular Endothelial Growth Factor (VEGF) Expression by Hypoxia-Inducible Factor (HIF)-1 Independent and Dependent Mechanisms and Increases Tumor Oxygenation. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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318 A comparative study of treatment planning systems and the algorithms used. Radiother Oncol 2005. [DOI: 10.1016/s0167-8140(05)81294-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Cloned mice derived from embryonic stem cell karyoplasts and activated cytoplasts prepared by induced enucleation. Biol Reprod 2003; 68:1259-66. [PMID: 12606420 DOI: 10.1095/biolreprod.102.008730] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Our objective was to induce enucleation (IE) of activated mouse oocytes to yield cytoplasts capable of supporting development following nuclear transfer. Fluorescence microscopy for microtubules, microfilaments, and DNA was used to evaluate meiotic resumption after ethanol activation and the effect of subsequent transient treatments with 0.4 micro g/ml of demecolcine. Using oocytes from B6D2F1 (C57BL/6 x DBA/2) donors, the success of IE of chromatin into polar bodies (PBs) was dependent on the duration of demecolcine treatment and the time that such treatment was initiated after activation. Similarly, variations in demecolcine treatment altered the proportions of oocytes exhibiting a reversible compartmentalization of chromatin into PBs. Treatment for 15 min begun immediately after activation yielded an optimized IE rate of 21% (n = 80) when oocytes were evaluated after overnight recovery in culture. With this protocol, 30-50% of oocytes were routinely scored as compartmentalized when assessed 90 min postactivation. No oocytes could be scored as such following overnight recovery, with 66% of treated oocytes cleaving to the 2-cell stage (n = 80). Activated cytoplasts were prepared by mechanical removal of PBs from oocytes whose chromatin had undergone IE or compartmentalization. These cytoplasts were compared with mechanically enucleated, metaphase (M) II cytoplasts whose activation was delayed in nuclear transfer experiments using HM-1 embryonic stem cells. Using oocytes from either B6D2F1 or B6CBAF1 (C57BL/6 x CBA) donors, the in vitro development of cloned embryos using activated cytoplasts was consistently inferior to that observed using MII cytoplasts. Live offspring were derived from both oocyte strains using the latter, whereas a single living mouse was cloned from activated B6CBAF1 cytoplasts.
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Clonal relationships in a shelter-associated outbreak of drug-resistant tuberculosis: 1983-1997. Int J Tuberc Lung Dis 2002; 6:872-8. [PMID: 12365573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
SETTING An outbreak of tuberculosis caused by Mycobacterium tuberculosis resistant to isoniazid and streptomycin (HS-resistant) was documented in Boston's homeless population in 1984. Isolate relatedness was confirmed at the time by phage typing. In the late 1990s, cases of HS-resistant tuberculosis in the homeless were also documented, confirmed by RFLP typing using IS6110. None of the phage typed isolates from the 1980s were viable for performing RFLP analysis. We attempted to determine, using mixed-linker PCR (M-L PCR) finger-printing, whether or not these cases were all due to the same strain of M. tuberculosis. DESIGN Isolates from 10 HS-resistant patients-four non-viable isolates from the 1980s and six viable isolates from 1996-1997-were sent to the Centers for Disease Control and Prevention for M-L PCR fingerprinting. These results were combined with record reviews of older cases and an ongoing epidemiologic investigation. RESULTS Eight of 10 of the isolates were clonal, and the other two were strongly suspected matches. Epidemiologic investigation determined that transmission continued to occur after the initial outbreak in 1984-1985, and that a streptomycin-monoresistant variant of the strain was also circulating. CONCLUSION M-L PCR fingerprinting combined with epidemiology was able to document links between cases across 15 years.
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Pulsatile perfusion improves regional myocardial blood flow during and after hypothermic cardiopulmonary bypass in a neonatal piglet model. Ann Thorac Surg 2000. [DOI: 10.1016/s0003-4975(00)02116-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Analysis of Mycobacterium tuberculosis transmission patterns in a homeless shelter outbreak. Int J Tuberc Lung Dis 2000; 4:308-13. [PMID: 10777078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
SETTING From July 1997 through May 1998, ten tuberculosis (TB) cases were reported among men in a Syracuse New York homeless shelter for men. OBJECTIVE AND DESIGN Investigation to determine extent of, and prevent further, transmission of Mycobacterium tuberculosis. RESULTS Epidemiologic and laboratory evidence suggests that eight of the ten cases were related. Seven cases had isolates with matching six-band IS6110 DNA fingerprints; the isolate from another case had a closely related fingerprint pattern and this case was considered to be caused by a variant of the same strain. Isolates from eight cases had identical spoligotypes. The source case had extensive cavitary disease and stayed at the shelter nightly, while symptomatic, for almost 8 months before diagnosis. A contact investigation was conducted among 257 shelter users and staff, 70% of whom had a positive tuberculin skin test, including 21 with documented skin test conversions. CONCLUSIONS An outbreak of related TB cases in a high-risk setting was confirmed through the use of IS6110 DNA fingerprinting in conjunction with spoligotyping and epidemiologic evidence. Because of the high rate of infection in the homeless population, routine screening for TB and preventive therapy for eligible persons should be considered in shelters.
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Spectral sexualities: nineteenth-century spiritualism, moral panics, and the making of U.S. obscenity law. JOURNAL OF WOMEN'S HISTORY 2000; 12:8-29. [PMID: 17724857 DOI: 10.1353/jowh.2000.0042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
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Hyper-resistance to infection in TIMP-1-deficient mice is neutrophil dependent but not immune cell autonomous. Ann N Y Acad Sci 1999; 878:494-6. [PMID: 10415752 DOI: 10.1111/j.1749-6632.1999.tb07706.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Compassion daytime TV. THE BODY POSITIVE 1999; 12:40. [PMID: 11367017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
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Control of protein and matrix-molecule synthesis in isolated ovine fetal growth-plate chondrocytes by the interactions of basic fibroblast growth factor, insulin-like growth factors-I and -II, insulin and transforming growth factor-beta 1. J Endocrinol 1992; 133:363-73. [PMID: 1613437 DOI: 10.1677/joe.0.1330363] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Chondrogenesis is thought to be controlled by interactions between circulating anabolic hormones and locally produced peptide growth factors, and involves ordered changes in matrix composition which ultimately allow endochondral calcification. We have used a model of isolated ovine fetal growth-plate chondrocytes to examine the actions and interactions of basic fibroblast growth factor (basic FGF), insulin-like growth factors-I and -II (IGF-I and -II), insulin and transforming growth factor-beta 1 (TGF-beta 1) on total protein, collagen or non-collagenous protein and sulphated glycosaminoglycan synthesis. These parameters were determined by assessment of the incorporation by monolayer cultures of early passage chondrocytes of [3H]leucine, [14C]proline and [35S]sulphate respectively, followed by partial molecular characterization. Basic FGF enhanced total protein synthesis with a half-maximal effective concentration of 270 +/- 60 pmol/l (mean +/- S.E.M., four animals) and was sixfold more active on a molar basis than IGF-I or insulin, and 28-fold more active that IGF-II which is the endogenously synthesized IGF. The actions of basic FGF were additive to those of IGF-I or insulin. More detailed analysis of extracellular-matrix component synthesis showed that basic FGF, IGF-I and insulin each caused significant increases in the synthesis of collagen and sulphated glycosaminoglycans. TGF-beta 1 had no effect on total protein synthesis by chondrocytes when present alone at concentrations of 200 pmol/l or less, but was inhibitory at 400 pmol/l. However, the use of this parameter masked a stimulatory action of 50 or 100 pmol TGF-beta 1 on sulphated glycosaminoglycan synthesis and a relative shift in the ratio of collagen: non-collagenous protein synthesis in favour of the former. A synergistic interaction existed between TGF-beta 1 (20-100 pmol/l) and basic FGF which potentiated total protein and collagen synthesis, and their actions on sulphated glycosaminoglycan production were additive. The same concentrations of TGF-beta 1 inhibited the ability of IGF-I or insulin to stimulate total protein or collagen synthesis, but were additive to their stimulatory effects on sulphated glycosaminoglycan synthesis. The results suggest that matrix-molecule composition and the anabolic status of the epiphyseal growth-plate may be modulated in utero by multiple interactions between peptide growth factors produced locally, such as basic FGF, IGF-II and TGF-beta 1, and circulating hormones such as insulin and IGF-I.
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Abstract
An association between eosinophilia and neutropenia has been observed in a number of clinical conditions. To probe the role of eosinophils in granulopoiesis, marrow and peritoneal eosinophils, obtained from Schistosoma mansoni-infected mice, were separated and purified. Normal bone marrow cells were cultured in semi-solid culture medium in concentrations ranging from 5 X 10(4) to 5 X 10(5), with and without added eosinophils. To examine whether high prostaglandin E (PGE) content of eosinophils affects granulopoiesis, indomethacin was added to duplicate marrow cultures containing eosinophils. The addition of eosinophils to normal syngeneic marrow culture caused a significant inhibition of granulocyte-macrophage colony formation (CFU-GM) in culture. This suppressive effect was reversible upon addition of indomethacin. These findings suggest that eosinophils, in vitro, are capable of inhibition of granulopoiesis. The reversal of this effect by indomethacin indicates that this suppression may be prostaglandin mediated.
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Poly ICLC induces anti-IC antibodies in mice and rabbits. JOURNAL OF INTERFERON RESEARCH 1984; 4:57-62. [PMID: 6715915 DOI: 10.1089/jir.1984.4.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Poly ICLC is an interferon (IFN) inducer and antiviral, antitumor, radioprotective, and immunoregulatory agent. We show that administration of poly ICLC to mice and rabbits also results in the presence of anti-IC antibodies in their serum.
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Poly ICL-CM dextran: an interferon inducer of reduced toxicity. JOURNAL OF INTERFERON RESEARCH 1984; 4:155-60. [PMID: 6205100 DOI: 10.1089/jir.1984.4.155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We have prepared soluble complexes of poly ICL-CM dextran that are as effective interferon IFN inducers, in mice and in rhesus monkeys, as poly ICLC. Toxicity testing was carried out in mice and, poly ICL-CM dextran is less toxic, in mice, than poly ICLC is.
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The Effects of Cholestyramine, Colestipol, and ADR-132 on the Rat Prostate and Dunning R-3327 Adenocarcinoma. J Urol 1983. [DOI: 10.1016/s0022-5347(17)51489-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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The effects of cholestyramine, colestipol, and ADR-132 on the rat prostate and dunning R-3327 adenocarcinoma. J Surg Oncol 1983; 22:273-7. [PMID: 6834849 DOI: 10.1002/jso.2930220414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The effects of three compounds known to have hypocholesterolemic activity in several species were investigated on the rat prostate and the hormone-dependent R-3327 rat prostatic adenocarcinoma. Cholestyramine, colestipol, and ADR-132 are bile acid-sequestering anion exchange resins which were fed to separate groups of adult male Copenhagen X Fischer (F1) hybrid rats in doses of 0.25%, 1.00%, and 2.00% of diet. The results indicate that serum cholesterol levels in tumor-bearing rats and controls fed these compounds for 29 days were not reduced. The body and organ weights as well as the histological features of the prostate gland, seminal vesicles, and the R-3327 tumor were unaffected by these agents.
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Effect of postoperative chemotherapy and radiotherapy, on the survival of subcutaneously implanted Furth Wilms' tumor. Oncology 1981; 38:65-8. [PMID: 6258122 DOI: 10.1159/000225525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The effect of surgery, postoperative combination chemotherapy and postoperative radiotherapy was evaluated in subcutaneously implanted Wistar/Furth rat Wilms' tumor. Four groups were studied. Group A (controls, no treatment given) had a median survival of 44 days. Group B (surgical excision of the primary tumor on day 14 after implantation) showed a median survival of 77 days, with 40% tumor-free long-term survivors (sacrificed on day 175). Group C (excision followed by chemotherapy consisting of vincristine, actinomycin D and adriamycin) had a median survival of 61 days with 35% tumor-free long-term survivors. Group D received the same postoperative chemotherapy as well as radiotherapy and had 55% tumor-free long-term survivors. This tumor may serve as a treatment model for some human Wilms' tumor cases who do not respond well to current therapies.
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Use of silastic implants to raise plasma androgen levels in the immature baboon (Papio cynocephalus). J Med Primatol 1981; 10:52-4. [PMID: 7277465 DOI: 10.1159/000460052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Two immature Papio cynocephalus baboons were implanted with silastic tubing containing testosterone (T) to obtain prolonged elevation of plasma androgen levels. Plasma radioimmunoassay indicated a thousandfold increase of T levels over baseline for three weeks. Two weeks after implant removal, plasma androgen levels were at, or below, the pre-implantation levels.
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Abstract
Wilms' tumor, renal cell carcinoma, and neuroblastoma in animals were transplanted from donors to recipients with strong histocompatibility differences. No strong evidence of the privileged site theory was found in this study and no obvious evidence of an immunosuppressive effect of testosterone was found. The most important factor noted in these studies was that the take of tumor transplant seems to be related more to the type of tumor itself. Further studies of transplant results of such different types of tumors are warranted and are being conducted. An interaction between the hormonal supportive concept and the privileged site seems tenable.
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