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Vaswani CM, Simone J, Pavelick JL, Wu X, Tan GW, Ektesabi AM, Gupta S, Tsoporis JN, Dos Santos CC. Tiny Guides, Big Impact: Focus on the Opportunities and Challenges of miR-Based Treatments for ARDS. Int J Mol Sci 2024; 25:2812. [PMID: 38474059 DOI: 10.3390/ijms25052812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/24/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
Acute Respiratory Distress Syndrome (ARDS) is characterized by lung inflammation and increased membrane permeability, which represents the leading cause of mortality in ICUs. Mechanical ventilation strategies are at the forefront of supportive approaches for ARDS. Recently, an increasing understanding of RNA biology, function, and regulation, as well as the success of RNA vaccines, has spurred enthusiasm for the emergence of novel RNA-based therapeutics. The most common types of RNA seen in development are silencing (si)RNAs, antisense oligonucleotide therapy (ASO), and messenger (m)RNAs that collectively account for 80% of the RNA therapeutics pipeline. These three RNA platforms are the most mature, with approved products and demonstrated commercial success. Most recently, miRNAs have emerged as pivotal regulators of gene expression. Their dysregulation in various clinical conditions offers insights into ARDS pathogenesis and offers the innovative possibility of using microRNAs as targeted therapy. This review synthesizes the current state of the literature to contextualize the therapeutic potential of miRNA modulation. It considers the potential for miR-based therapeutics as a nuanced approach that incorporates the complexity of ARDS pathophysiology and the multifaceted nature of miRNA interactions.
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Affiliation(s)
- Chirag M Vaswani
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
| | - Julia Simone
- Department of Medicine, McMaster University, Hamilton, ON L8V 5C2, Canada
| | - Jacqueline L Pavelick
- Institute of Medical Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Xiao Wu
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
| | - Greaton W Tan
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
| | - Amin M Ektesabi
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
- Institute of Medical Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Sahil Gupta
- Faculty of Medicine, School of Medicine, The University of Queensland, Herston, QLD 4006, Australia
| | - James N Tsoporis
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
| | - Claudia C Dos Santos
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
- Institute of Medical Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Interdepartmental Division of Critical Care, St. Michael's Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada
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Simone J, Pinkel D. Rationale and results of combination chemotherapy and central nervous system irradiation in acute lymphocytic leukemia. Bibl Haematol 2015; 39:1068-73. [PMID: 4521512 DOI: 10.1159/000427813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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3
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Nucci da Silva L, Timerman L, Simone J, Gun C. MS264 FRAMINGHAM AND PROCAM SCORE PLUS CD44L SHOW STRONG ASSOCIATION OF PERIODONTAL DISEASE SCORE. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70765-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Aubin C, Bernard C, Detar C, Di Pierro M, Freeland ED, Gottlieb S, Heller UM, Hetrick JE, El-Khadra AX, Kronfeld AS, Levkova L, Mackenzie PB, Menscher D, Maresca F, Nobes M, Okamoto M, Renner D, Simone J, Sugar R, Toussaint D, Trottier HD. Charmed-meson decay constants in three-flavor lattice QCD. Phys Rev Lett 2005; 95:122002. [PMID: 16197067 DOI: 10.1103/physrevlett.95.122002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2005] [Indexed: 05/04/2023]
Abstract
We present the first lattice QCD calculation with realistic sea quark content of the D+-meson decay constant f(D+). We use the MILC Collaboration's publicly available ensembles of lattice gauge fields, which have a quark sea with two flavors (up and down) much lighter than a third (strange). We obtain f(D+)=201+/-3+/-17 MeV, where the errors are statistical and a combination of systematic errors. We also obtain f(Ds)=249+/-3+/-16 MeV for the Ds meson.
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Affiliation(s)
- C Aubin
- Physics Department, Columbia University, New York, New York 10027, USA
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5
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Mayer O, Simone J, Trefil L, Holubec L, Pikner R. W12-P-039 The influence of folate supplementation on oxidative modification of lipoproteins in normohocysteinemic patients with hypercholesterolemia. ATHEROSCLEROSIS SUPP 2005. [DOI: 10.1016/s1567-5688(05)80283-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Aubin C, Bernard C, Detar C, Dipierro M, El-Khadra A, Gottlieb S, Gregory EB, Heller UM, Hetrick J, Kronfeld AS, Mackenzie PB, Menscher D, Nobes M, Okamoto M, Oktay MB, Osborn J, Simone J, Sugar R, Toussaint D, Trottier HD. Semileptonic decays of d mesons in three-flavor lattice QCD. Phys Rev Lett 2005; 94:011601. [PMID: 15698062 DOI: 10.1103/physrevlett.94.011601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2004] [Indexed: 05/24/2023]
Abstract
We present the first three-flavor lattice QCD calculations for D-->pilnu and D-->Klnu semileptonic decays. Simulations are carried out using ensembles of unquenched gauge fields generated by the MILC Collaboration. With an improved staggered action for light quarks, we are able to simulate at light quark masses down to 1/8 of the strange mass. Consequently, the systematic error from the chiral extrapolation is much smaller than in previous calculations with Wilson-type light quarks. Our results for the form factors at q(2)=0 are f(D-->pi)(+)(0)=0.64(3)(6) and f(D-->K)(+)(0)=0.73(3)(7), where the first error is statistical and the second is systematic, added in quadrature. Combining our results with experimental branching ratios, we obtain the Cabibbo-Kobayashi-Maskawa matrix elements |V(cd)|=0.239(10)(24)(20) and |V(cs)|=0.969(39)(94)(24), where the last errors are from experimental uncertainties.
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Affiliation(s)
- C Aubin
- Department of Physics, Washington University, St. Louis, MO 63130, USA
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7
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Desch CE, Eisenberg P, Gesme D, Jacobson J, Jahanzeb M, Neuss M, Padberg J, Rainey J, Simone J. A practice-based, voluntary program for promoting excellence in cancer care: A pilot study of feasibility, cost and preliminary results. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.6029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. E. Desch
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - P. Eisenberg
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - D. Gesme
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - J. Jacobson
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - M. Jahanzeb
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - M. Neuss
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - J. Padberg
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - J. Rainey
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
| | - J. Simone
- Virginia Cancer Institute, Richmond, VA; California Cancer Care, Greenbrae, CA; Oncology Associates, Cedar Rapids, IA; North Shore Cancer Center, Peabody, MA; Boston Baskin Cancer Group, Memphis, TN; Oncology-Hematology Care Inc, Cincinnati, OH; American Society of Clinical Oncology, Alexandria, VA; Louisiana Oncology Associates, Lafayette, LA; Simone Consulting Company, Dunwoody, GA
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8
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Davies CTH, Follana E, Gray A, Lepage GP, Mason Q, Nobes M, Shigemitsu J, Trottier HD, Wingate M, Aubin C, Bernard C, Burch T, DeTar C, Gottlieb S, Gregory EB, Heller UM, Hetrick JE, Osborn J, Sugar R, Toussaint D, Di Pierro M, El-Khadra A, Kronfeld AS, Mackenzie PB, Menscher D, Simone J. High-precision lattice QCD confronts experiment. Phys Rev Lett 2004; 92:022001. [PMID: 14753930 DOI: 10.1103/physrevlett.92.022001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2003] [Indexed: 05/24/2023]
Abstract
The recently developed Symanzik-improved staggered-quark discretization allows unquenched lattice-QCD simulations with much smaller (and more realistic) quark masses than previously possible. To test this formalism, we compare experiment with a variety of nonperturbative calculations in QCD drawn from a restricted set of "gold-plated" quantities. We find agreement to within statistical and systematic errors of 3% or less. We discuss the implications for phenomenology and, in particular, for heavy-quark physics.
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Affiliation(s)
- C T H Davies
- Department of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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9
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McGivney WT, Young R, Simone J. National Cancer Policy Board Report. Oncology (Williston Park) 2000; 14:92-6. [PMID: 11195424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
While collecting information for a consumer pamphlet to assist cancer patients in navigating through the medical system, the National Cancer Policy Board discovered the data that were available were critically insufficient. In response, the turned their attention to analyzing our ability to assess quality of cancer care. Their findings along with ten recommendations were published in April 1999. In particular, their conclusions concerning data collection and volume outcomes surprised many in the oncology community. These comments along with five of their recommendations--high-volume settings, standard guidelines, the elements of quality care, measuring and monitoring quality care, and end-of-life care--are presented in this panel discussion.
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Affiliation(s)
- W T McGivney
- Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
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10
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Sen-Majumdar A, Sheehan K, Guo G, Allegre G, Simone J, Harvey M, Chow P, Moen R, Smith A. A comparative study on the efficacy of CD8-positive cells in enhancing allogeneic bone marrow engraftment: cell sorting vs microbead selection. Bone Marrow Transplant 1998; 22:477-84. [PMID: 9733271 DOI: 10.1038/sj.bmt.1701350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We have used a superparamagnetic microbead selection system to positively select a murine bone marrow CD8+ cell population. The functional ability of these cells to enhance allogeneic bone marrow engraftment was compared with that of fluorescence activated cell sorter purified CD8+ cells. The CD8+ cell population prepared by the microbead selection procedure was as effective as cell sorter purified CD8+ cells in enhancing T cell-depleted allogeneic bone marrow engraftment in lethally irradiated mice. Phenotypic characterization of these cells shows that most of these CD8+ cells express CD3 and the T cell antigen receptor complex.
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11
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Simone J, Schneider GT, Begneaud W, Harms K. Granular cell tumor of the vulva: literature review and case report. J La State Med Soc 1996; 148:539-41. [PMID: 8990799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Granular cell tumors are an uncommon neoplasm of neural origin. They occur throughout the body; only about 10% are found in the vulvar region. Granular cell tumors are most frequent in the third and fourth decade of life, the African-American race, and the female. Generally, they appear as small, firm, painless, slow-growing subcutaneous nodules. They are rarely encapsulated and recurrence is common. The malignant granular cell tumor is rare, representing 1% to 2% of cases. This form is highly aggressive, unresponsive to treatment, and ultimately fatal. A third type of granular cell tumor has been described which has benign pathologic characteristics but behaves in a clinically malignant manner. The treatment of choice for all types is wide, local surgical excision. A case is described which typifies the benign type granular cell tumor.
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Affiliation(s)
- J Simone
- Department of Obstetrics and Gynecology, Ochsner Clinic, New Orleans, USA
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12
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Pertschuk LP, Masood S, Simone J, Feldman JG, Fruchter RG, Axiotis CA, Greene GL. Estrogen receptor immunocytochemistry in endometrial carcinoma: a prognostic marker for survival. Gynecol Oncol 1996; 63:28-33. [PMID: 8898164 DOI: 10.1006/gyno.1996.0273] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
UNLABELLED Only a few parameters such as tumor grade and stage are of value in prognosticating disease course in endometrial carcinoma. Biochemical steroid hormone receptor assays could also be useful but are difficult to perform and interpret. Immunocytochemical assay (ICA) might be the method of choice for detecting endometrial receptors. METHODS Frozen tissue from 78 cases of endometrial adenocarcinoma was examined for the presence of estrogen (ER) and progesterone receptors (PgR) with specific monoclonal anti-receptor antibodies and the peroxidase-antiperoxidase method. In over 60 cases, frozen tissue was also assayed for ER and PgR by biochemical means. RESULTS Fifty-five (71%) of the endometrial carcinomas were ERICA-positive and 55 (71%) PgRICA-positive. Although both ERICA and PgRICA correlated significantly with biochemical ER and PgR only ERICA was predictive of survival. A woman with a negative ERICA was 4 times more likely to die of her disease than if she were ERICA-positive (P = 0.009; mean follow-up, 37.5 months). Three cases ERICA-positive and PgRICA-negative survived while 3 others ERICA-negative and PgRICA-positive died. CONCLUSION ERICA, a technique easy to perform and interpret at the community hospital level, appears to provide prognostic information independent of tumor stage and grade. Such information might be of value in planning postoperative therapies for women with endometrial cancer.
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Affiliation(s)
- L P Pertschuk
- Department of Pathology, State University of New York Health Science Center at Brooklyn, 11203, USA
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13
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Liao G, Simone J, Simon SR. Paracrine downregulation of Fc gamma RIII in human monocyte-derived macrophages induced by phagocytosis of nonopsonized particles. Blood 1994; 83:2294-304. [PMID: 8161796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Monocytes and macrophages can take up nonopsonized particles through a direct phagocytic process and IgG-coated particles through combined mechanisms of nonspecific phagocytosis and internalization mediated by specific Fc receptors for IgG (Fc gamma R) on the plasma membrane. In this study, we report the effect of phagocytosis of nonopsonized latex beads on the levels of expression of Fc gamma receptors in human monocyte-derived macrophages (MDM) as measured by flow cytometry (fluorescence-activated cell sorter [FACS]). Macrophages were exposed to green fluorescent 1-micron polystyrene beads before labeling for Fc gamma RI, Fc gamma R-II, and Fc gamma R-III, respectively, with 32.2, 2E1, and 3G8 monoclonal antibodies (MoAbs) and a phycoerythrin (PE)-conjugated secondary Ab to permit dual-channel analysis of fluorescence intensity by FACS. Macrophages that had phagocytosed at least one bead showed reduced levels of surface Fc gamma R-III but not Fc gamma R-I or Fc gamma R-II when compared with cells that had never been exposed to beads. Moreover, cells that were not in direct contact with beads, but that shared medium with cells that had phagocytosed beads also had reduced levels of Fc gamma R-III but not Fc gamma R-I or Fc gamma R-II, suggesting a cytokine-mediated mechanism of Fc gamma R-III downregulation. Phagocytosis of 1-micron beads alone stimulated macrophages to release tumor necrosis factor-alpha (TNF-alpha). The medium from macrophages phagocytosing beads could stimulate other macrophages not in direct contact with beads to release TNF-alpha as well, but such paracrine-triggered release could be reduced by more than 50% if the medium from the phagocytosing cells was first treated with a neutralizing anti-TNF-alpha antibody. Moreover, the paracrine downregulation of Fc gamma R-III described above could also be blocked if the neutralizing anti-TNF-alpha antibody was added to the medium of phagocytosing cells. Treatment of macrophages with recombinant human TNF-alpha in the absence of beads induced decreased levels of Fc gamma R-III but not of Fc gamma R-II. These results show that paracrine downregulation of Fc gamma R-III is mediated by a TNF-alpha-dependent mechanism.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- G Liao
- Department of Biochemistry & Cell Biology, State University of New York at Stony Brook 11794-8691
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14
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Simone J, Simon S, Liao G, Matic M, Volkman D. Human macrophage (M phi) polymorphism demonstrated by differential phagocytosis of fluorescent polystyrene beads. Ann N Y Acad Sci 1993; 677:454-7. [PMID: 8494241 DOI: 10.1111/j.1749-6632.1993.tb38815.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- J Simone
- Flow Cytometry Facility, State University of New York, Stony Brook 11794-8161
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15
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Gailit J, Colflesh D, Rabiner I, Simone J, Goligorsky MS. Redistribution and dysfunction of integrins in cultured renal epithelial cells exposed to oxidative stress. Am J Physiol 1993; 264:F149-57. [PMID: 8430825 DOI: 10.1152/ajprenal.1993.264.1.f149] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Tubular obstruction by detached renal tubular epithelial cells is a major cause of oliguria in acute renal failure. Viable renal tubular cells can be recovered from urine of patients with acute tubular necrosis, suggesting a possible defect in cell adhesion to the basement membrane. To study this process of epithelial cell desquamation in vitro, we investigated the effect of nonlethal oxidative stress on the integrin adhesion receptors of the primate kidney epithelial cell line BS-C-1. Morphological and functional studies of cell adhesion properties included the following: interference reflection microscopy, intravital confocal microscopy and immunocytochemistry, flow cytometric analysis of integrin receptor abundance, and cell-matrix attachment assay. High levels of the integrin subunits alpha 3, alpha v, and beta 1 were detected on the cell surface by fluorescence-activated cell sorting (FACS) analysis, as well as lower levels of alpha 1, alpha 2, alpha 4, alpha 5, alpha 6, and beta 3. Exposure of BS-C-1 cells to nonlethal oxidative stress resulted in the disruption of focal contacts, disappearance of talin from the basal cell surface, and in the redistribution of integrin alpha 3-subunits from predominantly basal location to the apical cell surface. As measured in a quantitative cell attachment assay, oxidative stress decreased BS-C-1 cell adhesion to type IV collagen, laminin, fibronectin, and vitronectin. Defective adhesion was not associated with a loss of alpha 3-, alpha 4-, or alpha v-integrin subunits from the cell surface.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J Gailit
- Department of Dermatology, State University of New York, Stony Brook 11794
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Ochs J, Mulhern R, Fairclough D, Parvey L, Whitaker J, Ch'ien L, Mauer A, Simone J. Comparison of neuropsychologic functioning and clinical indicators of neurotoxicity in long-term survivors of childhood leukemia given cranial radiation or parenteral methotrexate: a prospective study. J Clin Oncol 1991; 9:145-51. [PMID: 1985164 DOI: 10.1200/jco.1991.9.1.145] [Citation(s) in RCA: 215] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We prospectively compared neuropsychologic functioning and clinical indicators of neurotoxicity in 49 consecutive childhood leukemia patients in long-term continuous complete remission (CR) who had received two different regimens of CNS prophylaxis by random assignment. Twenty-three patients were treated with 1,800 cGy cranial radiation and intrathecal methotrexate (RT group) and 26 with parenteral methotrexate only (MTX group). Over half of the RT group had somnolence syndrome, and four developed cerebral calcifications late in their clinical course. Abnormal electroencephalograms (EEGs) were seen in 15 patients in the MTX group, and six had early, transient white-matter hypodensities apparent on computed tomographic (CT) scans. Mean scores on standard tests of intelligence and academic achievement, administered after remission induction and again at a median of 6 years after treatment cessation, did not differ significantly between the two groups. However, statistically significant decreases in overall and verbal intelligence quotients (IQs) and in arithmetic achievement were found within both treatment groups. Sixteen of 26 in the MTX group and 14 of the 23 in the RT group had clinically important decreases (greater than or equal to 15 points) on one or more neuropsychologic measures. These changes did not correlate with findings on CT scans, EEGs, or other clinical signs of neurotoxicity. We conclude that 1,800 cGy cranial radiation and parenteral methotrexate, as used in this study, are associated with comparable decreases in neuropsychologic function.
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Affiliation(s)
- J Ochs
- Department of Hematology-Oncology, St Jude Children's Research Hospital, Memphis, TN 38101
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17
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Berger CL, Eisenberg A, Soper L, Chow J, Simone J, Gapas Y, Cacciapaglia B, Bennett L, Edelson RL, Warburton D. Dual genotype in cutaneous T cell lymphoma: immunoglobulin gene rearrangement in clonal T cell malignancy. J Invest Dermatol 1988; 90:73-7. [PMID: 2961816 DOI: 10.1111/1523-1747.ep12462574] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Genomic DNA digests of peripheral blood lymphocytes from 13 patients with the leukemic phase of the T cell neoplasm cutaneous T cell lymphoma were studied by hydridization using probes for the constant region of the beta chain of the T cell receptor, the joining region of the immunoglobulin heavy chain gene, and the kappa and lambda light chain genes. Lymphocytes from all 13 cutaneous T cell lymphoma patients contained DNA with clonal rearrangements of the beta chain gene of the T cell receptor. In addition, DNA from 4 patients contained an immunoglobulin gene rearrangement. T cell enrichment studies of peripheral blood lymphocytes from 2 patients confirmed that the immunoglobulin gene joining region rearrangement was confined to the T cell population. These results demonstrate that cutaneous T cell lymphoma is a clonal T cell malignancy that frequently expresses a dual genotype. A multiparameter approach, including DNA probes for the beta chain of the T cell receptor, as well as the immunoglobulin genes, immunophenotyping, and cytogenetics, is valuable in the diagnosis of cutaneous T cell lymphoma.
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MESH Headings
- Antibodies, Monoclonal
- DNA, Neoplasm/genetics
- Genes, Immunoglobulin
- Genotype
- Humans
- Immunoglobulin Constant Regions/genetics
- Immunoglobulin J-Chains/genetics
- Immunoglobulin Joining Region/genetics
- Karyotyping
- Lymphoma/genetics
- Lymphoma/immunology
- Nucleic Acid Hybridization
- Receptors, Antigen, T-Cell/analysis
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell, alpha-beta
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- T-Lymphocytes/immunology
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18
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Abstract
Radiotherapy is important in the treatment of leukemia and lymphoma of children. In acute lymphocytic leukemia administration of cranial irradiation early during chemotherapy-induced remission prevents initial meningeal relapse. When cranial irradiation is combined with a 3-year course of multiple drug systemic chemotherapy approximately one-half of the children remain in complete remission for 5 years or more and are at little risk of relapse. Preventive cranial irradiation is effective in children with acute myelocytic leukemia, also, but this does not affect survival because of the inadequacy of chemotherapy in controlling bone marrow disease. Low dose palliative irradiation can be helpful in caring for some children with obstructive, painful or disabling leukemic lesions. In Hodgkin's disease of children radiotherapy is effective in curing stages IA, IIA, and IIIA disease and contributes to chemotherapy control of stages IIIB and IV disease. The role of radiotherapy in non-Hodgkin's lymphoma is less clear. Children with T-lymphoblastic lymphoma tend to have rapid dissemination to bone marrow and meninges and appear to benefit more from multiple agent chemotherapy and preventive meningeal irradiation. Children with B-lymphoblastic lymphoma usually benefit from cyclophosphamide therapy; the value of irradiation is yet to be established. However, radiotherapy is frequently curative in stage I B-lymphocytic nodular and histiocytic lymphomas. The indications for radiotherapy in children with leukemia and lymphoma are constantly changing. Before each child is treated the multi disciplinary evaluation and treatment team must consider the rationale in relation to the specific child and current knowledge.
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19
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Abstract
The records of 314 children with acute lymphocytic leukemia (ALL) were reviewed to determine the frequency, clinical and laboratory features; contributing factors; and prognosis of cyclophosphamide-induced hemorrhagic cystitis. Twenty-five well-documented cases of hemorrhagic cystitis were identified. While most of the affected children suffered a mild transient illness, 1 patient died as a result of bladder hemorrhage. The doses of cyclophosphamide received by these children ranged widely and did not correlate with the severity of the cystitis. The frequency of this complication did not differ significantly with sex, age or route of administration. However, cystitis was over twice as frequent in black children as in white. Nineteen of 25 cases occurred in the spring and summer months. The group of affected children did not differ significantly from a matched control group in terms of total drug dosage received, incidence of systemic toxicity, mean urine specific gravity, or overall survival.
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20
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MESH Headings
- Adolescent
- Adult
- Age Factors
- Azauridine/therapeutic use
- Child
- Child, Preschool
- Cytarabine/administration & dosage
- Cytarabine/therapeutic use
- Drug Therapy, Combination
- Female
- Hepatomegaly
- Humans
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/pathology
- Leukemia, Myeloid, Acute/therapy
- Liver/pathology
- Lymph Nodes/pathology
- Male
- Mercaptopurine/administration & dosage
- Mercaptopurine/therapeutic use
- Remission, Spontaneous
- Spleen/pathology
- Splenectomy
- Splenomegaly
- Vincristine/therapeutic use
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21
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Simone J. Acute lymphocytic leukemia in childhood. Semin Hematol 1974; 11:25-39. [PMID: 4520529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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22
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23
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Pinkel D, Simone J, Hustu HO, Aur RJ. Nine years' experience with "total therapy" of childhood acute lymphocytic leukemia. Pediatrics 1972; 50:246-51. [PMID: 4505343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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24
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25
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Aur RJ, Simone J, Hustu HO, Walters T, Borella L, Pratt C, Pinkel D. Central nervous system therapy and combination chemotherapy of childhood lymphocytic leukemia. Blood 1971; 37:272-81. [PMID: 4322483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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26
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Rishpon-Meyerstein N, Kilbridge T, Simone J, Fried W. The effect of testosterone on erythropoietin levels in anemic patients. Blood 1968; 31:453-60. [PMID: 5646058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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