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Fischer-Valuck B, Blanchard A, Katz S, Durci M, Syh J, Wu T, Patel B, Syh J, Rosen L. Outcomes Following Stereotactic Body Radiation Therapy for Biopsy Proven Versus Radiographically-Diagnosed Early-Stage Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1414] [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: 10/26/2022]
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Rosen L, Willett A, Fischer-Valuck B, Katz S, Durci M, Wu T, Patel B, Syh J, Syh J. Comparison of HDR Brachytherapy, Orthovoltage X-ray, and Electron Beam Radiation in the Treatment of Nonmelanoma Skin Cancers: A Single Institution Experience of Individualized Radiation Therapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.426] [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: 10/26/2022]
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Domingo-Gonzalez R, Katz S, Serezani CH, Moore T, LeVine AM, Moore B. Prostaglandin E2-induced changes in alveolar macrophage scavenger receptor profiles alter phagocytosis of bacteria post-bone marrow transplantation (P2156). The Journal of Immunology 2013. [DOI: 10.4049/jimmunol.190.supp.69.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
The effectiveness of hematopoietic stem cell transplantation as a therapy is complicated by pulmonary infections. Using our syngeneic bone marrow transplant (BMT) mouse model, BMT mice displayed increased susceptibility to Pseudomonas aeruginosa and Staphylococcus aureus. BMT alveolar macrophages (AMs) exhibited a defect in P. aeruginosa phagocytosis while S. aureus uptake was enhanced. This difference was due to an altered scavenger receptor (SR) profile. Interestingly, MARCO expression was decreased while SR-AI/II was increased. Phagocytosis assays with SR-AI/II transfected-CHO cells revealed SR-AI/II was important for S. aureus uptake but not P. aeruginosa. Conversely, AMs treated in vitro with soluble MARCO exhibited similar defects in P. aeruginosa internalization as did BMT AMs. miR-155 targets the 3’UTR of SR-AI, however, its expression is decreased post-BMT. Anti-miR-155-transfected AMs exhibited an increase in SR-AI/II expression and S. aureus phagocytosis. In vitro treatment of AMs with prostaglandin E2 (PGE2) (elevated post-BMT) increased SR-AI/II, and decreased MARCO and miR-155. Despite a difference in phagocytosis, BMT AMs harbor a killing defect to both P. aeruginosa and S. aureus. Thus, our data suggest that PGE2-driven alterations in SR and miR-155 expression account for the differential phagocytosis of P. aeruginosa and S. aureus but impaired killing ultimately confers increased susceptibility to pulmonary infection.
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Affiliation(s)
| | - Samuel Katz
- 2Biochemistry and Cell Biology, Stony Brook Univ., Stony Brook, NY
| | | | - Thomas Moore
- 4Internal Medicine/Division of Pulmonary and Critical Care, University of Michigan, Ann Arbor, MI
| | - Ann Marie LeVine
- 5Pediatrics/Critical Care Division, University of Michigan, Ann Arbor, MI
| | - Bethany Moore
- 4Internal Medicine/Division of Pulmonary and Critical Care, University of Michigan, Ann Arbor, MI
- 6Microbiology and Immunology, University of Michigan, Ann Arbor, MI
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Domingo-Gonzalez R, Katz S, Serezani CH, Moore TA, Levine AM, Moore BB. Prostaglandin E2-induced changes in alveolar macrophage scavenger receptor profiles differentially alter phagocytosis of Pseudomonas aeruginosa and Staphylococcus aureus post-bone marrow transplant. J Immunol 2013; 190:5809-17. [PMID: 23630358 DOI: 10.4049/jimmunol.1203274] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effectiveness of hematopoietic stem cell transplantation as a therapy for malignant and nonmalignant conditions is complicated by pulmonary infections. Using our syngeneic bone marrow transplant (BMT) mouse model, BMT mice with a reconstituted hematopoietic system displayed increased susceptibility to Pseudomonas aeruginosa and Staphylococcus aureus. BMT alveolar macrophages (AMs) exhibited a defect in P. aeruginosa phagocytosis, whereas S. aureus uptake was surprisingly enhanced. We hypothesized that the difference in phagocytosis was due to an altered scavenger receptor (SR) profile. Interestingly, MARCO expression was decreased, whereas SR-AI/II was increased. To understand how these dysregulated SR profiles might affect macrophage function, CHO cells were transfected with SR-AI/II, and phagocytosis assays revealed that SR-AI/II was important for S. aureus uptake but not for P. aeruginosa. Conversely, AMs treated in vitro with soluble MARCO exhibited similar defects in P. aeruginosa internalization as did BMT AMs. The 3'-untranslated region of SR-AI contains a putative target region for microRNA-155 (miR-155), and miR-155 expression is decreased post-BMT. Anti-miR-155-transfected AMs exhibited an increase in SR-AI/II expression and S. aureus phagocytosis. Elevated PGE2 has been implicated in driving an impaired innate immune response post-BMT. In vitro treatment of AMs with PGE2 increased SR-AI/II and decreased MARCO and miR-155. Despite a difference in phagocytic ability, BMT AMs harbor a killing defect to both P. aeruginosa and S. aureus. Thus, our data suggest that PGE2-driven alterations in SR and miR-155 expression account for the differential phagocytosis of P. aeruginosa and S. aureus, but impaired killing ultimately confers increased susceptibility to pulmonary infection.
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McGregor C, Katz S, Harpham M. Management of a parturient with an anterior sacral meningocele. Int J Obstet Anesth 2013; 22:64-7. [DOI: 10.1016/j.ijoa.2012.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 08/23/2012] [Accepted: 08/30/2012] [Indexed: 11/25/2022]
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Rosen L, Fischer-Valuck B, Katz S, Durci M, Wu T, Takalkar A, Mirfakhraee M, Lilien D. Monitoring the Response of Stereotactic Body Radiation Therapy (SBRT) in Patients With Early-stage Lung Cancer Using Serial Positron Emission Tomography (PET). Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.335] [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: 11/29/2022]
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Tuvia S, Atsmon J, Teichman SL, Katz S, Salama P, Pelled D, Landau I, Karmeli I, Bidlingmaier M, Strasburger CJ, Kleinberg DL, Melmed S, Mamluk R. Oral octreotide absorption in human subjects: comparable pharmacokinetics to parenteral octreotide and effective growth hormone suppression. J Clin Endocrinol Metab 2012; 97:2362-9. [PMID: 22539587 DOI: 10.1210/jc.2012-1179] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Oral administration of a novel octreotide formulation enabled its absorption to the systemic circulation, exhibiting blood concentrations comparable to those observed with injected octreotide and maintaining its biological activity. OBJECTIVES The aim of the study was to determine oral octreotide absorption and effects on pituitary GH secretion compared to sc octreotide injection. DESIGN Four single-dose studies were conducted in 75 healthy volunteers. INTERVENTION Oral doses of 3, 10, or 20 mg octreotide and a single sc injection of 100 μg octreotide were administered. MAIN OUTCOME MEASURE We measured the pharmacokinetic profile of orally administrated octreotide and the effect of octreotide on basal and stimulated GH secretion. RESULTS Both oral and sc treatments were well tolerated. Oral octreotide absorption to the circulation was apparent within 1 h after dose administration. Escalating oral octreotide doses resulted in dose-dependent increased plasma octreotide concentrations, with an observed rate of plasma decay similar to parenteral administration. Both 20 mg oral octreotide and injection of 0.1 mg sc octreotide resulted in equivalent pharmacokinetic parameters [mean peak plasma concentration, 3.77 ± 0.25 vs. 3.97 ± 0.19 ng/ml; mean area under the curve, 16.2 ± 1.25 vs. 12.1 ± 0.45 h × ng/ml); and median time ≥ 0.5 ng/ml, 7.67 vs. 5.88 h, respectively). A single dose of 20 mg oral octreotide resulted in basal (P < 0.05) and GHRH-stimulated (P < 0.001) mean GH levels suppressed by 49 and 80%, respectively. CONCLUSIONS The results support an oral octreotide alternative to parenteral octreotide treatment for patients with acromegaly.
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Affiliation(s)
- S Tuvia
- Chiasma, 10 Hartom Street, Jerusalem 45182, Israel
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Patel B, Syh J, Durci M, Rosen L, Katz S, Wu H. SU-E-T-136: Comparison of TomoScanner™ 2D Water Phantom versus IBA Helix for Tomotherapy Profile Measurements. Med Phys 2012; 39:3734. [DOI: 10.1118/1.4735194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Syh J, Patel B, Syh J, Wu H, Rosen L, Durci M, Katz S, Sibata C. SU-E-T-135: Investigation of Commercial-Grade Flatbed Scanners and a Medical- Grade Scanner for Radiochromic EBT Film Dosimetry. Med Phys 2012; 39:3734. [DOI: 10.1118/1.4735193] [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: 11/07/2022] Open
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Hewitt EA, Armstrong G, Beg N, Katz S, Vancaillie TG. Lignocaine plasma levels following topical gel application in laparoscopic and hysteroscopic procedures. Anaesth Intensive Care 2012; 40:292-6. [PMID: 22417024 DOI: 10.1177/0310057x1204000212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The study aim was to determine plasma lignocaine concentrations resulting from topical application of a newly formulated, sterile two-pack lignocaine gel in laparoscopic and hysteroscopic procedures. This was an open label single-centre study in which six female patients underwent laparoscopy and six underwent hysteroscopy. One venous blood sample was extracted pre-gel application, followed by 10 samples over a 24 hour period following application. Samples were centrifuged, stored at -20°C and subsequently analysed for lignocaine and its metabolite, monoethyl-glycinexylidide. Application of gel in doses between 2.7 and 5.8 mg/kg of lignocaine resulted in a maximum plasma concentration in any patient of 1520 ng/ml lignocaine and 240 ng/ml monoethyl-glycinexylidide. These maximum concentrations were recorded in a patient undergoing a laparoscopic procedure and patients undergoing hysteroscopic procedures all recorded lower maximum concentrations compared with patients undergoing laparoscopy; the maximum observed concentrations in a patient having a hysteroscopy were 420 ng/ml lignocaine and 56 ng/ml of monoethyl-glycinexylidide.A new sterile two-pack topical lignocaine gel, applied at the end of laparoscopic and hysteroscopic procedures in doses up to 5.84 mg/kg, resulted in plasma lignocaine levels below those known to have the potential to cause central nervous system toxicity.
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Affiliation(s)
- E A Hewitt
- Women's Health and Research Institute of Australia, University of New South Wales, Sydney, Australia
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Abou-Alfa GK, Gansukh B, Chou JF, Shia J, Capanu M, Kalin M, Chen HX, Zojwalla NJ, Katz S, Reidy DL, Kelsen DP, Saltz L. Phase II study of cixutumumab (IMC-A12, NSC742460; C) in hepatocellular carcinoma (HCC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Olivier A, Katz S, Burn P, Wertheimer S. P-81: Interaction between SH-PTP2 (SYP) and the insulin receptor is phosphorylation dependent. Exp Clin Endocrinol Diabetes 2009. [DOI: 10.1055/s-0029-1211624] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Koutrouvelis P, Fried D, Lailas N, Monjazeb A, Sehn J, Sideris G, Hendricks F, Katz S. 104 poster: Targeted 3-D Brachytherapy for Gleason S Score 8-10 Prostate Cancer. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(15)34361-9] [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: 10/23/2022]
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Fried D, Lailas N, Monjazeb A, Hendricks F, Katz S, Sehn J, Kasenetz I, Bondy H, Ahaghotu C, Koutrouvelis P. Seminal Vesicle Biopsy and Prostate Brachytherapy using Three-dimensional Stereotaxis with Posterior Pararectal Approach. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1089] [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: 11/29/2022]
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Knight RJ, Kerman RH, McKissick E, Lawless A, Podder H, Katz S, Van Buren CT, Kahan BD. Selective corticosteroid and calcineurin-inhibitor withdrawal after pancreas-kidney transplantation utilizing thymoglobulin induction and sirolimus maintenance therapy. Clin Transplant 2008; 22:645-50. [PMID: 18657156 DOI: 10.1111/j.1399-0012.2008.00839.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Of 25 simultaneous pancreas-kidney transplant (SPK) recipients treated with thymoglobulin induction, sirolimus and reduced-dose cyclosporine (CsA), 18 low-immune responders (non-African-Americans, PRA < 30%) were withdrawn from prednisone on post-transplant day 5, whereas seven high-immune responders continued on prednisone. Most high- and low-immune responder recipients were converted from CsA to mycophenolic acid (MPA) at six months post-transplantation. At a mean follow-up of 28 +/- 10 months, two pancreas grafts were lost to pancreatitis. There were no patient or kidney graft losses, but one acute rejection episode. At 28 +/- 11 months, all 18 low-responder recipients remain steroid-free. Twenty recipients (14 low and six high-immune responders) were converted from CsA to MPA. During conversion, immune response was monitored by Flow-PRA and T-cell stimulation (Cylex) assays. Nineteen of 20 recipients displayed a post-conversion PRA of 0%, whereas one highly sensitized patient expressed a post-conversion PRA of 67%. Fifty-eight percent of individual T-cell stimulation scores were in the hypo-responsive range. Twelve of 18 low-immune responders are both steroid and CsA-free at a mean follow-up of 17 +/- 13 months, whereas five of seven high-immune responders remain CsA-free at a mean follow-up of 11 +/- 10 months. These data suggest that thymoglobulin induction with combined sirolimus and CsA maintenance therapy permits immunosuppression minimization in selected SPK recipients.
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Affiliation(s)
- R J Knight
- The Methodist Hospital, University of Texas Medical School, Houston, TX, USA.
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Jang S, Wu H, Sourivong P, Katz S, Rosen L. SU-GG-T-480: Displacement of Implanted Gold Fiducials Due to Rectal Marker Placed for Delineating the Luminal Surface of Rectum. Med Phys 2008. [DOI: 10.1118/1.2962229] [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: 11/07/2022] Open
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Abstract
A new method for preparing an isolated colonic loop in a living rabbit is described. The loop with its intact neurovascular supply can be used as as a "living test tube" to study the adherence of microorganisms to intestinal mucosa. Moreover, the clear colonic mucus produced by the loop can be used to study its physiochemical nature and protecting properties in health and disease.
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Janz NK, Mujahid M, Hawley S, Hamilton A, Katz S. Racial/ethnic differences in adequacy of information and peer support for women with breast cancer. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.9085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9085 Background: Existing disparities in quality of care for women with breast cancer suggest the need to explore the adequacy of information and care support provided to patients. This study investigated whether racial/ethnic variation existed in receipt and usefulness of cancer-related information and availability of peer support. Methods: 2,030 women diagnosed with non-metastatic breast cancer and reported to the Los Angeles County, Surveillance Epidemiologic and End Results registry between 8/05–5/06, were identified and mailed a survey shortly after initial treatment. Latina and African American (AA) women were oversampled. Outcomes included self-reported receipt and perceived usefulness of treatment-related (recovery from surgery, radiation, chemotherapy) and survivorship-related (sexual functioning, relationships, nutrition, anxiety) information and experiences with other women with breast cancer. We report results on a 50% respondent sample (N=742) that will be updated based on a final sample of 1,400 women (projected response rate, 72%). Results: More women received information and found it useful regarding treatment than survivorship issues. After adjusting for age and education, a higher percentage of Latina women, compared to white and AA women, desired more information on treatment-related issues and survivorship-related issues (p<.01). A higher percentage of Latina women also reported having no contact with other women with breast cancer, either through the health care system or a family/friend (p<.001), and reported a desire for more contact as compared to white or AA women (42%, vs. 15% and 29%, respectively). Overall, women rated the benefit of talking to other women high, particularly in helping with emotional issues and few endorsed potentially negative consequences. Conclusions: Women with breast cancer expressed the need for more useful information and care support, especially about managing survivorship concerns. Particular focus is warranted with Latina women to provide desired information and greater opportunities for peer contact. No significant financial relationships to disclose.
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Affiliation(s)
- N. K. Janz
- University of Michigan, Ann Arbor, MI; University of Michigan, School of Public Health, Ann Arbor, MI; University of Southern California, Los Angeles, CA
| | - M. Mujahid
- University of Michigan, Ann Arbor, MI; University of Michigan, School of Public Health, Ann Arbor, MI; University of Southern California, Los Angeles, CA
| | - S. Hawley
- University of Michigan, Ann Arbor, MI; University of Michigan, School of Public Health, Ann Arbor, MI; University of Southern California, Los Angeles, CA
| | - A. Hamilton
- University of Michigan, Ann Arbor, MI; University of Michigan, School of Public Health, Ann Arbor, MI; University of Southern California, Los Angeles, CA
| | - S. Katz
- University of Michigan, Ann Arbor, MI; University of Michigan, School of Public Health, Ann Arbor, MI; University of Southern California, Los Angeles, CA
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Wu H, Sourivong P, Jang S, Katz S, Massey J, Rosen L. SU-FF-T-243: Impact of Intra-Fractional Tumor Motion for Hypo-Fractionated Lung Radiosurgery Using Hi-Art TomoTherapy System. Med Phys 2007. [DOI: 10.1118/1.2760904] [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: 11/07/2022] Open
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Jang S, Wu H, Sourivong P, Katz S, Rosen L. SU-FF-T-216: Evaluation of Mid-Treatment Tumor Motion for Hypo-Fractionated Lung Radiosurgery Using Hi-Art TomoTherapy System. Med Phys 2007. [DOI: 10.1118/1.2760877] [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: 11/07/2022] Open
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75
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Findler M, Katz S. [Dentistry--in the eyes of the court--Integrated overview of verdicts that were given regarding dentistry]. Refuat Hapeh Vehashinayim (1993) 2007; 24:51-8. [PMID: 17696065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
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76
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Katz S, Pitt WW. A New Versatile and Sensitive Monitoring System for Liquid Chromatography: Cerate Oxidation and Fluorescence Measurement. ANAL LETT 2006. [DOI: 10.1080/00032717208066105] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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77
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Katz S, Boland R, Santillán G. Modulation of ERK 1/2 and p38 MAPK signaling pathways by ATP in osteoblasts: involvement of mechanical stress-activated calcium influx, PKC and Src activation. Int J Biochem Cell Biol 2006; 38:2082-91. [PMID: 16893669 DOI: 10.1016/j.biocel.2006.05.018] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2006] [Revised: 05/10/2006] [Accepted: 05/31/2006] [Indexed: 10/24/2022]
Abstract
There is evidence that extracellular nucleotides, acting through multiple P2 receptors, may play an important role in the regulation of bone metabolism by activating intracellular signaling cascades. We have studied the modulation of mitogen-activated protein kinase (MAPK) signaling pathways and its relationship to changes in intracellular calcium concentration ([Ca(2+)](i)) induced by ATP in ROS-A 17/2.8 osteoblastic cells. ATP and UTP (10 microM) increased [Ca(2+)](i) by cation release from intracellular stores. We have found that when the cells are subsequently subjected to mechanical stress (medium perturbation), a transient calcium influx occurs. This mechanical stress-activated calcium influx (MSACI) was not observed after ADP stimulation, indicating that P2Y(2) receptor activation is required for MSACI. In addition, ERK 1/2 and p38 MAPK were activated by ATP in a dose- and time-dependent manner. This activation was almost completely blocked using neomycin (2.5mM), an inhibitor of phosphoinositide-phospholipase C (PI-PLC), Ro 318220 (1 microM), a protein kinase C (PKC) inhibitor, and PP1 (50 microM), a potent and selective inhibitor of the Src-family tyrosine kinases. Ca(2+)-free extracellular medium (containing 0.5mM EGTA) and the use of gadolinium (5 microM), which suppressed MSACI, prevented ERK 1/2 and p38 phosphorylation by ATP. Altogether, these results represent the first evidence to date suggesting that P2Y(2) receptor stimulation by ATP in osteoblasts sensitizes mechanical stress activated calcium channels leading to calcium influx and a fast activation of the ERK 1/2 and p38 MAPK pathways. This effect also involves upstream mediators such as PI-PLC, PKC and Src family kinases.
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Affiliation(s)
- S Katz
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, (B8000ICN) Bahía Blanca, Argentina
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Kostis J, Jackson G, Rosen R, Barrett-Connor E, Billups K, Burnett A, Carson C, Cheitlin M, Debusk R, Fonseca V, Ganz P, Goldstein I, Guay A, Hatzichristou D, Hollander J, Hutter A, Katz S, Kloner R, Mittleman M, Montorsi F, Montorsi P, Nehra A, Sadovsky R, Shabsigh R. Sexual Dysfunction and Cardiac Risk (the Second Princeton Consensus Conference). J Urol 2006. [DOI: 10.1016/s0022-5347(05)00878-5] [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: 11/24/2022]
Affiliation(s)
- J.B. Kostis
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - G. Jackson
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - R. Rosen
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - E. Barrett-Connor
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - K. Billups
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - A.L. Burnett
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - C. Carson
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - M. Cheitlin
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - R. Debusk
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - V. Fonseca
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - P. Ganz
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - I. Goldstein
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - A. Guay
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - D. Hatzichristou
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - J.E. Hollander
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - A. Hutter
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - S. Katz
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - R.A. Kloner
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - M. Mittleman
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - F. Montorsi
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - P. Montorsi
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - A. Nehra
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - R. Sadovsky
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - R. Shabsigh
- University of Medicine and Dentistry of New Jersey–Robert Wood Johnson Medical School, New Brunswick, New Jersey
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Knight RJ, Kerman RH, McKissick E, Lawless A, Podder H, Katz S, Van Buren CT, Kahan BD. A Pilot Study of Immunosuppression Minimization After Pancreas-Kidney Transplantation Utilizing Thymoglobulin Induction and Sirolimus Maintenance Therapy. Transplant Proc 2005; 37:3538-41. [PMID: 16298653 DOI: 10.1016/j.transproceed.2005.09.087] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [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: 12/01/2022]
Abstract
AIMS To determine outcomes utilizing thymoglobulin and sirolimus immunosuppression, with early steroid withdrawal in low-immune responder pancreas-kidney (SPK) recipients, and conversion from cyclosporine (CsA) to mycophenolic acid (MPA) in all recipients at 6 months posttransplantation. METHODS SPK recipients received thymoglobulin, sirolimus, and reduced-dose CsA immunosuppression. Low immune responders (non-African-Americans with a pretransplant PRA < 30%) were withdrawn from prednisone on posttransplant day 5 and high immune responders were continued on prednisone. All recipients were converted from CsA to MPA at 6 months posttransplantation. During conversion, recipient immune response was monitored by flow PRA and a T-cell stimulation assay (Cylex). RESULTS With a mean follow-up of 9 +/- 4 months, one pancreas was lost to pancreatitis, with no patient or kidney losses and no acute rejection episodes. All eight low immune responder patients were steroid-free at 9 +/- 5 months posttransplantation. Seven patients (five low and two high immune responders) with at least 6-month follow-up were converted from CsA to MPA. One high immune responder with a pretransplant PRA of 43% remained with a PRA of 53% +/- 2% postconversion. The second high immune responder had a pretransplant PRA of 34% and a postconversion PRA of 0%. The five low immune responders had a mean pretransplant PRA of 16% +/- 15% and a postconversion PRA of 0% (P < .01). The Cylex assay resulted in 67% low responsiveness for both high and low immune responders. CONCLUSION Thymoglobulin induction with sirolimus maintenance therapy permitted immunosuppression minimization in selected pancreas transplant recipients. Posttransplant evaluation revealed a diminished (regulated) immune response in six of seven patients.
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Affiliation(s)
- R J Knight
- Division of Immunology and Organ Transplantation, University of Texas Medical School, 6431 Fannin Street, Houston, TX 77030, USA.
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Hawley S, Hofer T, Lakhani I, Katz S. Determinants of surgeon variation in local therapy for breast cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.6003] [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)
- S. Hawley
- Univ of Michigan and Ann Arbor VAMC, Ann Arbor, MI
| | - T. Hofer
- Univ of Michigan and Ann Arbor VAMC, Ann Arbor, MI
| | - I. Lakhani
- Univ of Michigan and Ann Arbor VAMC, Ann Arbor, MI
| | - S. Katz
- Univ of Michigan and Ann Arbor VAMC, Ann Arbor, MI
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81
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Mirzasadeghi M, Wu H, Akpati H, Rosen L, Katz S, Kandler E, Massey J. TU-EE-A2-04: Helical Tomotherapy Leakage Radiation Half and Tenth Value Layers in Concrete and Lead. Med Phys 2005. [DOI: 10.1118/1.1998451] [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: 11/07/2022] Open
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82
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Akpati H, Wu H, Rosen L, Katz S. SU-FF-T-392: A Technique for Non-Coplanar Helical Tomotherapy Cranial Radiosurgery Treatment. Med Phys 2005. [DOI: 10.1118/1.1998158] [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: 11/07/2022] Open
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83
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Wu H, Rosen L, Katz S, Mirzasadeghi M, Akpati H. SU-FF-J-69: Pitch, Roll and Yaw Device for Helical Tomotherapy Head & Neck and Brain Treatment. Med Phys 2005. [DOI: 10.1118/1.1997615] [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: 11/07/2022] Open
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84
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Wu H, Akpati H, Rosen L, Katz S, Mirzasadeghi M, Walker J. SU-FF-T-58: A Comparison Between Helical Tomotherapy and LINAC-Based Fractionated Cranial Radiosurgery Treatments Utilizing RTOG Guidelines. Med Phys 2005. [DOI: 10.1118/1.1997729] [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: 11/07/2022] Open
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85
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Bernhardt ES, Palmer MA, Allan JD, Alexander G, Barnas K, Brooks S, Carr J, Clayton S, Dahm C, Follstad-Shah J, Galat D, Gloss S, Goodwin P, Hart D, Hassett B, Jenkinson R, Katz S, Kondolf GM, Lake PS, Lave R, Meyer JL, O'donnell TK, Pagano L, Powell B, Sudduth E. ECOLOGY: Synthesizing U.S. River Restoration Efforts. Science 2005; 308:636-7. [PMID: 15860611 DOI: 10.1126/science.1109769] [Citation(s) in RCA: 1325] [Impact Index Per Article: 69.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Abstract
The research studied 249 people employed in extended employment programs in northern Israel with respect to their intention to apply for an alternative job (an active step) or to accept a new job offer (a passive step). Findings indicated that young, single people who were living with their parents and perceived their level of disability as mild indicated more intention to apply for an alternative job or to accept a new job offer. Furthermore, people with low monthly wages, less satisfaction with their income and with the extended employment program in general, and a lack of participation in non-employment activities expressed a greater inclination to apply for an alternative job or to accept a new job offer. The only difference between people's intentions to apply for an alternative job (an active step) or to accept a job offer (a passive step) was in regard to their perception of their disability. The intention to apply for an alternative job was associated with mild disability, whereas the acceptance of a new job offer was related to mild and moderate disability.
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Affiliation(s)
- A Rimmerman
- Social Welfare and Health Studies, University of Haifa, Israel.
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87
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Alexander L, Birkhead G, Guerra F, Helms C, Hinman A, Katz S, LeBaron CW, Modlin J, Murphy TV. Ensuring Preparedness for Potential Poliomyelitis Outbreaks. ACTA ACUST UNITED AC 2004; 158:1106-12. [PMID: 15583093 DOI: 10.1001/archpedi.158.12.1106] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Paralytic poliomyelitis was once endemic in the United States; however, because of high vaccination levels, the last case of wild disease occurred in 1979. Although worldwide polio eradication may be achieved in the near future, the presence of undervaccinated children in urban areas and among groups who refuse vaccination creates an outbreak risk, should importation of wild virus occur. In 1999, the Advisory Committee on Immunization Practices (ACIP) recommended that inactivated poliovirus vaccine (IPV) be used for routine immunization of the US population and that oral poliovirus vaccine (OPV) be reserved for "mass vaccination campaigns to control outbreaks of paralytic polio." Subsequently, the sole US manufacturer of OPV withdrew from the market. In 2003, a joint National Vaccine Advisory Committee (NVAC)/ACIP working group was charged with reporting to its parent bodies concerning the need for a poliovirus vaccine stockpile. Based on that working group's report, the NVAC and ACIP have concluded that stockpiles of both IPV and OPV should be maintained. In the event of an outbreak in which OPV continues not to be available, IPV should be used for control, and a stockpile of 8 million doses seems to be sufficient. Should IPV be manufactured only in combination with other vaccines, appropriate procurement actions should be taken to ensure that uncombined IPV continues to be stockpiled. Under circumstances of diminished population immunity, OPV may offer outbreak control advantages. The NVAC and ACIP recommend that the United States collaborate with international agencies to provide guaranteed and rapid access to at least 8 million doses of trivalent OPV or 8 million doses of each of the 3 types of monovalent OPV. The regulatory and practical obstacles to implementation of this recommendation will require assertive facilitation at high levels of the federal government and careful planning at the state and local levels.
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Affiliation(s)
- Lorraine Alexander
- National Immunization Program, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA.
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88
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Morrow M, Lantz P, Janz N, Fagerlin A, Mujahid M, Katz S. Patterns and correlates of breast reconstruction: results of a population based study. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.557] [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)
- M. Morrow
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
| | - P. Lantz
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
| | - N. Janz
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
| | - A. Fagerlin
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
| | - M. Mujahid
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
| | - S. Katz
- Northwestern University, Chicago, IL; University of Michigan, Ann Arbor, MI
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89
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Knight RJ, Zela S, Schoenberg L, Podder H, Kerman RH, Katz S, Van Buren CT, Kahan BD. The effect of pancreas transplantation on peripheral vascular disease complications. Transplant Proc 2004; 36:1069-71. [PMID: 15194371 DOI: 10.1016/j.transproceed.2004.04.054] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND We sought to determine whether pancreas transplantation reduced the incidence of peripheral vascular complications in diabetics with renal insufficiency. METHODS A retrospective single-center review was done of 36 kidney-pancreas (KP) and 88 kidney-alone (KA) recipients with a diagnosis of diabetes and end-stage renal disease (ESRD) transplanted between May 1997 and July 2002. Risk factors studied included type of transplant, age, gender, history of smoking, coronary artery disease, hypertension, and peripheral vascular disease (PVD). The endpoint was first peripheral vascular event occurring after transplantation, defined as either an amputation or revascularization procedure. RESULTS The mean age of the cohort was 51 +/- 9 years, 64% of patients were of male gender, 20% with a history of smoking, 98% with hypertension, 15% with coronary artery disease (CAD), and 12% with a history of PVD. With a median follow-up of 45 months (12 to 79 months), 3/36 (8%) of KP recipients suffered a PVD complication, compared to 10/88 (11%) of KA recipients (P = NS). Similarly, age, gender, a past history of smoking, CAD, and hypertension were not predictive of PVD complications. Five of 15 patients (33%) with a pretransplant history of PVD suffered a postoperative PVD event compared to only 8 of 109 patients (7%) with no prior history of PVD (P =.008). CONCLUSIONS Restoration of normoglycemia by pancreas transplantation did not reduce the risk of PVD complications in diabetics with renal failure. A pretransplant history of PVD was the only risk factor associated with posttransplant PVD events.
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Affiliation(s)
- R J Knight
- Division of Immunology and Organ Transplantation, University of Texas Medical School at Houston, 77030, USA.
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90
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Santillán G, Baldi C, Katz S, Vazquez G, Boland R. Evidence that TRPC3 is a molecular component of the 1alpha,25(OH)2D3-activated capacitative calcium entry (CCE) in muscle and osteoblast cells. J Steroid Biochem Mol Biol 2004; 89-90:291-5. [PMID: 15225788 DOI: 10.1016/j.jsbmb.2004.03.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In chick skeletal muscle and in rat osteoblast-like cells (ROS 17/2.8), 1alpha,25-dihydroxy-Vitamin-D(3) [1alpha,25(OH)(2)D(3)] stimulates release of Ca(2+) from inner stores and extracellular cation influx through both voltage-dependent and capacitative Ca(2+) entry (CCE) channels. We investigated the involvement of TRPC proteins in CCE induced by 1alpha,25(OH)(2)D(3). Two fragments were amplified by RT-PCR, exhibiting >85% sequence homology with human TRPC3. Northern and Western blots employing TRPC3-probes and anti-TRPC3 antibodies, respectively, confirmed endogenous expression of a TRPC3-like protein. Both cell types transfected with anti-TRPC3 antisense oligodeoxynucleotides showed reduced CCE and Mn(2+) entry induced by either thapsigargin or 1alpha,25(OH)(2)D(3). In muscle cells, anti-VDR antisense inhibited steroid-induced Ca(2+) and Mn(2+) influx and co-immunoprecipitation of TRPC3 and VDR was observed, suggesting an association between both proteins and a functional role of the receptor in 1alpha,25(OH)(2)D(3) activation of CCE. In osteoblasts, two PCR fragments showing high homology with human INAD-like sequences were obtained. Northern blot and antisense functional assays suggested the involvement of the INAD-like protein in CCE regulation by the hormone. Therefore, we propose that an endogenous TRPC3 protein mediates 1alpha,25(OH)(2)D(3) modulation of CCE in muscle and osteoblastic cells, which seems to implicate VDR-TRPC3 association and the participation of a INAD-like scaffold protein.
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Affiliation(s)
- G Santillán
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, 8000 Bahía Blanca, Argentina
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91
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Abstract
BACKGROUND Non-invasive positive pressure ventilation (NPPV) has a beneficial effect on nocturnal hypoventilation and hospitalisation rates in adults with static or slowly progressive neuromuscular disease and respiratory failure. Its role in children affected with similar disease processes, however, remains unclear. AIMS To investigate the impact of NPPV on hospitalisations and sleep related respiratory parameters in children with neuromuscular disease. METHODS Fifteen children (mean age 11.7, range 3.4-17.8 years) diagnosed with neuromuscular disease who had been started on nocturnal NPPV and had at least one year of follow up since the initiation of such therapy were studied. Patients served as their own controls and comparison was made of the years preceding and following the initiation of NPPV. RESULTS Children spent 85% fewer days in hospital (mean pre-NPPV 48.0 days, mean post-NPPV 7.0 days) and 68% less days in intensive care after initiation of NPPV (mean pre-NPPV 12.0 days, mean post-NPPV 3.9 days). Sleep study parameters including number of desaturations, apnoea-hypopnoea index and transcutaneous pCO2 levels improved after initiation of NPPV. CONCLUSIONS NPPV can decrease hospitalisations for children with neuromuscular disease and improves sleep related respiratory parameters. A prospective study is now needed to further delineate the role of NPPV in this population of children.
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Affiliation(s)
- S Katz
- The Hospital for Sick Children, Toronto, Canada
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92
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Santillán G, Katz S, Buitrago C, Boland R. 1a,25(OH)2D3 induces capacitative calcium entry involving a trpc3 protein in skeletal muscle and osteoblastic cells. Biol Res 2004; 37:647-51. [PMID: 15709693 DOI: 10.4067/s0716-97602004000400021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/17/2022] Open
Abstract
This work describes the involvement of TRPC proteins in capacitative calcium entry (CCE) induced by 1alpha,25-dihydroxy-vitamin-D3 [1alpha,25(OH)2D3] in chick skeletal muscle and in rat osteoblast-like cells (ROS 17/2.8) and the role of the vitamin D receptor (VDR) in this non-genomic rapid response mediated by the hormone. We propose that an endogenous TRPC3 protein mediates 1alpha,25(OH)2D3 modulation of CCE in these cells, which seems to implicate VDR-TRPC3 association and the participation of an INAD-like scaffold protein.
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Affiliation(s)
- G Santillán
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670 (B8000CN), Bahía Blanca, Argentina
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93
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Sandborn WJ, Sands BE, Wolf DC, Valentine JF, Safdi M, Katz S, Isaacs KL, Wruble LD, Katz J, Present DH, Loftus EV, Graeme-Cook F, Odenheimer DJ, Hanauer SB. Repifermin (keratinocyte growth factor-2) for the treatment of active ulcerative colitis: a randomized, double-blind, placebo-controlled, dose-escalation trial. Aliment Pharmacol Ther 2003; 17:1355-64. [PMID: 12786629 DOI: 10.1046/j.1365-2036.2003.01589.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Repifermin (keratinocyte growth factor-2) has been shown to reduce inflammation in animal models of colitis. AIM To evaluate repifermin for the treatment of active ulcerative colitis. METHODS Eighty-eight patients with active ulcerative colitis were enrolled in a 6-week, double-blind trial. Patients were randomized to receive treatment for five consecutive days with intravenous repifermin at a dose of 1, 5, 10, 25 or 50 microg/kg, or placebo. The primary objective of the study was to evaluate the safety of repifermin. The primary efficacy outcome was clinical remission at week 4, defined as a score of zero on the endoscopic appearance and stool blood components of the Mayo score and a score of zero or unity on the stool frequency and physician's global assessment components. RESULTS At week 4, the rates of clinical remission in the 1, 5, 10, 25 and 50 microg/kg repifermin groups were 19%, 9%, 0%, 0% and 0%, respectively, and 11% for the placebo group (P = 0.32 for repifermin vs. placebo). The frequencies of commonly occurring adverse events and severe adverse events were similar in both groups. CONCLUSIONS Intravenous repifermin at a dose of 1-50 microg/kg was very well tolerated, but there was no evidence that repifermin was effective for the treatment of active ulcerative colitis at these doses. An additional study to determine the efficacy of repifermin at doses of > 50 microg/kg or for a longer treatment duration may be warranted, as the maximally tolerated dose was not reached in the present study.
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94
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Strebel P, Cochi S, Grabowsky M, Bilous J, Hersh BS, Okwo-Bele JM, Hoekstra E, Wright P, Katz S. The unfinished measles immunization agenda. J Infect Dis 2003; 187 Suppl 1:S1-7. [PMID: 12721885 DOI: 10.1086/368226] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [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: 01/23/2023] Open
Abstract
Despite achieving and sustaining global measles vaccination coverage of about 80% over the past decade, worldwide measles remains the fifth leading cause of mortality among children aged <5 years. In May 2002, the United Nations Special Session on Children endorsed the goal of reducing measles deaths by half by 2005. Countries and World Health Organization (WHO) regions that adopted aggressive measles control or elimination strategies have shown excellent results. In 2001, countries in the Americas reported an all time low of 537 confirmed measles cases. Substantial progress in measles control has also been achieved in the WHO Western Pacific Region, in seven southern African countries, and in selected countries in WHO European, Eastern Mediterranean, and Southeast Asian regions. The ongoing measles disease burden and availability of safe and effective measles mortality reduction strategies make a compelling case to complete the unfinished agenda of measles immunization.
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Affiliation(s)
- Peter Strebel
- Global Immunization Division, National Immunization Program, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
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95
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Kahan BD, Knight R, Schoenberg L, Pobielski J, Kerman RH, Mahalati K, Yakupoglu Y, Aki FT, Katz S, Van Buren CT. Ten years of sirolimus therapy for human renal transplantation: the University of Texas at Houston experience. Transplant Proc 2003; 35:25S-34S. [PMID: 12742465 DOI: 10.1016/s0041-1345(03)00351-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B D Kahan
- Division of Immunology and Organ Transplantation, Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas 77030, USA
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97
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98
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Semmelhack MF, Foos JS, Katz S. Spiro[4.4]nonatetraene and spiro[4.4]nona-1,3,7-triene. Synthesis and properties. Effects of spiroconjugation. J Am Chem Soc 2002. [DOI: 10.1021/ja00803a021] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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99
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Butler R, Katz S, Snelson A, Stephens JB. Identification of mercury oxide (HgOx) species by matrix isolation spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100483a005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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100
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