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Nurkolis F, Kurniawan R, Kurniatanty I, Park MN, Moon M, Fatimah S, Gunawan WB, Surya R, Taslim NA, Song H, Kim B. New Insight on In Vitro Biological Activities of Sulfated Polysaccharides from Ulvophyte Green Algae. Molecules 2023; 28:molecules28114531. [PMID: 37299007 DOI: 10.3390/molecules28114531] [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: 03/28/2023] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Green algae are natural bioresources that have excellent bioactive potential, partly due to sulfated polysaccharides (SPs) which are still rarely explored for their biological activities. There is currently an urgent need for studies exploring the anticancer biological activity of SPs extracted from two Indonesian ulvophyte green algae: the sulfated polysaccharide of Caulerpa racemosa (SPCr) and the sulfated polysaccharide of Caulerpa lentillifera (SPCl). The method of isolating SPs and their assessment of biological activities in this study were based on previous and similar studies. The highest yield sulfate/total sugar ratio was presented by SPCr than that of SPCl. Overall, SPCr exhibits a strong antioxidant activity, as indicated by smaller EC50 values obtained from a series of antioxidant activity assays compared to the EC50 values of Trolox (control). As an anti-obesity and antidiabetic, the overall EC50 value of both SPs was close to the EC50 of the positive control (orlistat and acarbose). Even more interesting was that SPCl displayed wide-ranging anticancer effects on colorectal, hepatoma, breast cancer cell lines, and leukemia. Finally, this study reveals new insights in that SPs from two Indonesian green algae have the potential to be promising nutraceuticals as novel antioxidative actors, and to be able to fight obesity, diabetes, and even cancer.
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Affiliation(s)
- Fahrul Nurkolis
- Department of Biological Sciences, State Islamic University of Sunan Kalijaga (UIN Sunan Kalijaga), Yogyakarta 55281, Indonesia
| | - Rudy Kurniawan
- Alumnus of Internal Medicine, Faculty of Medicine, University of Indonesia-Cipto Mangunkusumo Hospital, Jakarta 10430, Indonesia
| | - Isma Kurniatanty
- Department of Biological Sciences, State Islamic University of Sunan Kalijaga (UIN Sunan Kalijaga), Yogyakarta 55281, Indonesia
| | - Moon Nyeo Park
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Myunghan Moon
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Siti Fatimah
- Department of Biological Sciences, State Islamic University of Sunan Kalijaga (UIN Sunan Kalijaga), Yogyakarta 55281, Indonesia
| | - William Ben Gunawan
- Department of Nutrition Science, Faculty of Medicine, Diponegoro University, Semarang 50275, Indonesia
| | - Reggie Surya
- Department of Food Technology, Faculty of Engineering, Bina Nusantara University, Jakarta 11480, Indonesia
| | - Nurpudji Astuti Taslim
- Division of Clinical Nutrition, Department of Nutrition, Faculty of Medicine, Hasanuddin University, Makassar 90245, Indonesia
| | - Hangyul Song
- Nneul 365 Korean Medical Clinic, Incheon 22397, Republic of Korea
| | - Bonglee Kim
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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Goel H, Kumar R, Tanwar P, Upadhyay TK, Khan F, Pandey P, Kang S, Moon M, Choi J, Choi M, Park MN, Kim B, Saeed M. Unraveling the therapeutic potential of natural products in the prevention and treatment of leukemia. Biomed Pharmacother 2023; 160:114351. [PMID: 36736284 DOI: 10.1016/j.biopha.2023.114351] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/04/2023] Open
Abstract
Leukemia is a heterogeneous group of hematological malignancies distinguished by differentiation blockage and uncontrolled proliferation of myeloid or lymphoid progenitor cells in the bone marrow (BM) and peripheral blood (PB). There are various types of leukemia in which intensive chemotherapy regimens or hematopoietic stem cell transplantation (HSCT) are now the most common treatments associated with severe side effects and multi-drug resistance in leukemia cells. Therefore, it is crucial to develop novel therapeutic approaches with adequate therapeutic efficacy and selectively eliminate leukemic cells to improve the consequences of leukemia. Medicinal plants have been utilized for ages to treat multiple disorders due to their diverse bioactive compounds. Plant-derived products have been used as therapeutic medication to prevent and treat many types of cancer. Over the last two decades, 50 % of all anticancer drugs approved worldwide are from natural products and their derivatives. Therefore this study aims to review natural products such as polyphenols, alkaloids, terpenoids, nitrogen-containing, and organosulfur compounds as antileukemic agents. Current investigations have identified natural products efficiently destroy leukemia cells through diverse mechanisms of action by inhibiting proliferation, reactive oxygen species production, inducing cell cycle arrest, and apoptosis in both in vitro, in vivo, and clinical studies. Current investigations have identified natural products as suitable promising chemotherapeutic and chemopreventive agents. It played an essential role in drug development and emerged as a possible source of biologically active metabolites for therapeutic interventions, especially in leukemia. DATA AVAILABILITY: Data will be made available on request.
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Affiliation(s)
- Harsh Goel
- Department of Laboratory Oncology, All India Institute of Medical Sciences, New Delhi 11023, India.
| | - Rahul Kumar
- Department of Laboratory Oncology, All India Institute of Medical Sciences, New Delhi 11023, India.
| | - Pranay Tanwar
- Department of Laboratory Oncology, All India Institute of Medical Sciences, New Delhi 11023, India.
| | - Tarun Kumar Upadhyay
- Department of Biotechnology, Parul Institute of Applied Sciences and Centre of Research for Development, Parul University, Vadodara 391760, India,.
| | - Fahad Khan
- Department of Biotechnology, Noida Institute of Engineering & Technology, Greater Noida 201306, India.
| | - Pratibha Pandey
- Department of Biotechnology, Noida Institute of Engineering & Technology, Greater Noida 201306, India.
| | - Sojin Kang
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Myunghan Moon
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Jinwon Choi
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Min Choi
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Moon Nyeo Park
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Bonglee Kim
- Department of Pathology, College of Korean Medicine, Kyung Hee University, 05253, Republic of Korea.
| | - Mohd Saeed
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Hail 81411 Saudi Arabia.
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Ashrafi S, Alam S, Sultana A, Raj A, Emon NU, Richi FT, Sharmin T, Moon M, Park MN, Kim B. Papaverine: A Miraculous Alkaloid from Opium and Its Multimedicinal Application. Molecules 2023; 28:molecules28073149. [PMID: 37049912 PMCID: PMC10095881 DOI: 10.3390/molecules28073149] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
The pharmacological actions of benzylisoquinoline alkaloids are quite substantial, and have recently attracted much attention. One of the principle benzylisoquinoline alkaloids has been found in the unripe seed capsules of Papaver somniferum L. Although it lacks analgesic effects and is unrelated to the compounds in the morphine class, it is a peripheral vasodilator and has a direct effect on vessels. It is reported to inhibit the cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) phosphodiesterase in smooth muscles, and it has been observed to increase intracellular levels of cAMP and cGMP. It induces coronary, cerebral, and pulmonary artery dilatation and helps to lower cerebral vascular resistance and enhance cerebral blood flow. Current pharmacological research has revealed that papaverine demonstrates a variety of biological activities, including activity against erectile dysfunction, postoperative vasospasms, and pulmonary vasoconstriction, as well as antiviral, cardioprotective, anti-inflammatory, anticancer, neuroprotective, and gestational actions. It was recently demonstrated that papaverine has the potential to control SARS-CoV-2 by preventing its cytopathic effect. These experiments were carried out both in vitro and in vivo and require an extensive understanding of the mechanisms of action. With its multiple mechanisms, papaverine can be considered as a natural compound that is used to develop therapeutic drugs. To validate its applications, additional research is required into its precise therapeutic mechanisms as well as its acute and chronic toxicities. Therefore, the goal of this review is to discuss the major studies and reported clinical studies looking into the pharmacological effects of papaverine and the mechanisms of action underneath these effects. Additionally, it is recommended to conduct further research via significant pharmacodynamic and pharmacokinetic studies.
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Affiliation(s)
- Sania Ashrafi
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Safaet Alam
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
- Drugs and Toxins Research Division, BCSIR Laboratories Rajshahi, Bangladesh Council of Scientific and Industrial Research, Rajshahi 6206, Bangladesh
| | - Arifa Sultana
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Asef Raj
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Nazim Uddin Emon
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Chittagong 4318, Bangladesh
- Department of Chemistry and Biochemistry, Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA
| | - Fahmida Tasnim Richi
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Tasnuva Sharmin
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Myunghan Moon
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Moon Nyeo Park
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Bonglee Kim
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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Bozso S, Kang J, R EL-Andari, Fialka N, Moon M, Freed D, Nagendran J, Nagendran J. CREATING THE IDEAL ARTIFICIAL HEART VALVE. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.179] [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: 11/30/2022] Open
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Kim J, Lee S, Ko E, Kim S, Sung K, Ji C, Moon M, Kwon Y, Chung W. PO-1821 Synergistic efficacy by combination of AUTOTAC and low dose radiation in Alzheimer’s disease. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03784-7] [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: 10/18/2022]
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White A, Nguyen Q, Hong Y, Moon M, Wang S, Wang W. RAPID DEPLOYMENT VALVES ARE ADVANTAGEOUS IN THE REDO SETTING: COHORT STUDY. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.190] [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: 11/16/2022] Open
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7
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Ibrahim M, Stevens L, Ouzounian M, Hage A, Dagenais F, Peterson M, El-Hamamsy I, Boodhwani M, Bozinovski J, Moon M, Yamashita MH, Atoui R, Bittira B, Payne D, Lachapelle K, Chu M, Chung J. EVOLVING SURGICAL TECHNIQUES AND IMPROVING OUTCOMES FOR AORTIC ARCH SURGERY IN CANADA. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.212] [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: 11/28/2022] Open
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EL-Andari R, Bozso S, Kang J, Freed D, Nagendran J, Moon M, Nagendran J. QUANTIFYING THE IMMUNE RESPONSE TO TISSUE ENGINEERED PORCINE EXTRACELLULAR MATRIX. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.198] [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] Open
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Kim HD, Ryu M, Yoon S, Na YS, Moon M, Lee H, Song H, Kang YK. 1466P Clinical implications of neutrophil-to-lymphocyte ratio and MDSC kinetics in gastric cancer patients treated with ramucirumab plus paclitaxel. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1972] [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: 11/15/2022] Open
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10
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EL-Andari R, Bozso S, Kang J, Moon M, Freed D, Nagendran J, Nagendran J. Quantifying the Immune Response to Tissue Engineered Porcine Matrix. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.329] [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] Open
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11
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Bozso S, Kang J, Adam B, Moon M, Freed D, Hatami S, Nagendran J. RECELLULARIZATION OF ACELLULAR XENOGENIC SCAFFOLD WITH AUTOLOGOUS HUMAN MESENCHYMAL STEM CELLS RESCUES THE XENOREACTIVE IMMUNE RESPONSE. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.197] [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] Open
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12
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Ghoneim A, Bouhout I, Hage A, El-Hamamsy I, M Boodhwani, Bozinovski J, Dagenais F, Kumar K, Payne D, Moon M, Herman C, Ouzounian M, Peterson M, Chu M. CONTEMPORARY OUTCOMES OF AORTIC ARCH REPAIR WITH HYPOTHERMIC CIRCULATORY ARREST: THE IMPACT OF URGENCY STATUS EVIDENCE FROM THE CANADIAN THORACIC AORTIC COLLABORATIVE. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.594] [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: 11/15/2022] Open
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13
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Losenno K, Peterson M, Ouzounian M, Whitlock R, Dagenais F, Boodhwani M, Bhatnagar G, Poostizadeh A, Pozeg Z, Moon M, Kiaii B, Chu M. EARLY CLINICAL OUTCOMES OF A NOVEL FROZEN ELEPHANT TRUNK PROSTHESIS: THE CANADIAN THORACIC AORTIC COLLABORATIVE EXPERIENCE. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.172] [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: 11/24/2022] Open
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Lin H, Naito K, Valaperti A, Dawood F, Zhang L, Li G, Smyth D, Moon M, Liu Y, Liu P. 1984Innate immune nod1/rip2 signaling is essential for cardiac hypertrophic response with a surprising critical interaction with mitochondrial danger activator. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.1984] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H.B.C. Lin
- Ottawa Heart Institute, Research-Cardiac Function, Ottawa, Canada
| | - K. Naito
- Keiyu Hospital, Cardiology Division, Yokohama, Japan
| | - A. Valaperti
- University of Zurich, Department of Immunology, Zurich, Switzerland
| | - F. Dawood
- UHN - University of Toronto, Toronto, Canada
| | - L. Zhang
- Ottawa Heart Institute, Research-Cardiac Function, Ottawa, Canada
| | - G.H. Li
- Ottawa Heart Institute, Research-Cardiac Function, Ottawa, Canada
| | - D. Smyth
- Ottawa Heart Institute, Research-Cardiac Function, Ottawa, Canada
| | - M. Moon
- University of Toronto, Heart and Stroke/Richard Lewar Centre of Excellent for Cardiovascular Research, Toronto, Canada
| | - Y. Liu
- UHN - University of Toronto, Toronto, Canada
| | - P.P. Liu
- Ottawa Heart Institute, Research-Cardiac Function, Ottawa, Canada
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Kietzman K, McBride K, Moon M, Bacigalupo A, Benjamin A, Reynoso A, Wallace S, Bacong A. FEE-FOR-SERVICE OR MANAGED CARE? INVESTIGATING DUAL ELIGIBLE CONSUMER PREFERENCES FOR HEALTH CARE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2251] [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: 11/14/2022] Open
Affiliation(s)
- K.G. Kietzman
- UCLA Center for Health Policy Research, Los Angeles, California,
| | - K. McBride
- UCLA Center for Health Policy Research, Los Angeles, California,
| | - M. Moon
- Westside Center for Independent Living, Los Angeles, California
| | - A. Bacigalupo
- Westside Center for Independent Living, Los Angeles, California
| | - A. Benjamin
- UCLA Center for Health Policy Research, Los Angeles, California,
| | - A. Reynoso
- UCLA Center for Health Policy Research, Los Angeles, California,
| | - S.P. Wallace
- UCLA Center for Health Policy Research, Los Angeles, California,
| | - A. Bacong
- UCLA Center for Health Policy Research, Los Angeles, California,
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Lin H, Naito K, Valaperti A, Dawood F, Zhang L, Li G, Smyth D, Moon M, Liu Y, Liu P. INNATE IMMUNE NOD1/RIP2 SIGNALING IS ESSENTIAL FOR CARDIAC HYPERTROPHIC RESPONSE - WITH A SURPRISING CRITICAL INTERACTION WITH MITOCHONDRIAL DANGER ACTIVATOR. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.347] [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: 11/28/2022] Open
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17
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Byun J, Son SM, Cha MY, Shong M, Hwang YJ, Kim Y, Ryu H, Moon M, Kim KS, Mook-Jung I. CR6-interacting factor 1 is a key regulator in Aβ-induced mitochondrial disruption and pathogenesis of Alzheimer's disease. Cell Death Differ 2014; 22:959-73. [PMID: 25361083 PMCID: PMC4423180 DOI: 10.1038/cdd.2014.184] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 08/25/2014] [Accepted: 09/25/2014] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial dysfunction, often characterized by massive fission and other morphological abnormalities, is a well-known risk factor for Alzheimer's disease (AD). One causative mechanism underlying AD-associated mitochondrial dysfunction is thought to be amyloid-β (Aβ), yet the pathways between Aβ and mitochondrial dysfunction remain elusive. In this study, we report that CR6-interacting factor 1 (Crif1), a mitochondrial inner membrane protein, is a key player in Aβ-induced mitochondrial dysfunction. Specifically, we found that Crif1 levels were downregulated in the pathological regions of Tg6799 mice brains, wherein overexpressed Aβ undergoes self-aggregation. Downregulation of Crif1 was similarly observed in human AD brains as well as in SH-SY5Y cells treated with Aβ. In addition, knockdown of Crif1, using RNA interference, induced mitochondrial dysfunction with phenotypes similar to those observed in Aβ-treated cells. Conversely, Crif1 overexpression prevented Aβ-induced mitochondrial dysfunction and cell death. Finally, we show that Aβ-induced downregulation of Crif1 is mediated by enhanced reactive oxygen species (ROS) and ROS-dependent sumoylation of the transcription factor specificity protein 1 (Sp1). These results identify the ROS-Sp1-Crif1 pathway to be a new mechanism underlying Aβ-induced mitochondrial dysfunction and suggest that ROS-mediated downregulation of Crif1 is a crucial event in AD pathology. We propose that Crif1 may serve as a novel therapeutic target in the treatment of AD.
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Affiliation(s)
- J Byun
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - S M Son
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - M-Y Cha
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - M Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Y J Hwang
- Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea
| | - Y Kim
- Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea
| | - H Ryu
- 1] Center for Neuro-Medicine, Brain Science Institute, KIST, Seoul, Korea [2] Department of Neurology and Pathology, Boston University School of Medicine, Boston, MA, USA
| | - M Moon
- Department of Psychiatry, McLean Hospital/Harvard Medical School, Belmont, MA, USA
| | - K-S Kim
- Department of Psychiatry, McLean Hospital/Harvard Medical School, Belmont, MA, USA
| | - I Mook-Jung
- Department of Biochemistry and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
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Heimansohn D, Roselli E, Thourani V, Wang S, Voisine P, Ye J, Dabir R, Moon M. 339 * NORTH AMERICAN FDA TRIAL RESULTS AT ONE YEAR OF THE SORIN(R) FREEDOM SOLO PERICARDIAL AORTIC VALVE. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.339] [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: 11/14/2022] Open
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19
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Kook SY, Jeong H, Kang MJ, Park R, Shin HJ, Han SH, Son SM, Song H, Baik SH, Moon M, Yi EC, Hwang D, Mook-Jung I. Crucial role of calbindin-D28k in the pathogenesis of Alzheimer's disease mouse model. Cell Death Differ 2014; 21:1575-87. [PMID: 24853300 PMCID: PMC4158683 DOI: 10.1038/cdd.2014.67] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 03/03/2014] [Accepted: 04/04/2014] [Indexed: 01/22/2023] Open
Abstract
Calbindin-D28k (CB), one of the major calcium-binding and buffering proteins, has a critical role in preventing a neuronal death as well as maintaining calcium homeostasis. Although marked reductions of CB expression have been observed in the brains of mice and humans with Alzheimer disease (AD), it is unknown whether these changes contribute to AD-related dysfunction. To determine the pathogenic importance of CB depletions in AD models, we crossed 5 familial AD mutations (5XFAD; Tg) mice with CB knock-out (CBKO) mice and generated a novel line CBKO·5XFAD (CBKOTg) mice. We first identified the change of signaling pathways and differentially expressed proteins globally by removing CB in Tg mice using mass spectrometry and antibody microarray. Immunohistochemistry showed that CBKOTg mice had significant neuronal loss in the subiculum area without changing the magnitude (number) of amyloid β-peptide (Aβ) plaques deposition and elicited significant apoptotic features and mitochondrial dysfunction compared with Tg mice. Moreover, CBKOTg mice reduced levels of phosphorylated mitogen-activated protein kinase (extracellular signal-regulated kinase) 1/2 and cAMP response element-binding protein at Ser-133 and synaptic molecules such as N-methyl-D-aspartate receptor 1 (NMDA receptor 1), NMDA receptor 2A, PSD-95 and synaptophysin in the subiculum compared with Tg mice. Importantly, this is the first experimental evidence that removal of CB from amyloid precursor protein/presenilin transgenic mice aggravates AD pathogenesis, suggesting that CB has a critical role in AD pathogenesis.
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Affiliation(s)
- S-Y Kook
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - H Jeong
- School of Interdisciplinary Bioscience and Bioengineering, Department of Chemical Engineering, POSTECH, Pohang, Korea
| | - M J Kang
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology and College of Medicine or College of Pharmacy, Seoul National University, Seoul, Korea
| | - R Park
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - H J Shin
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - S-H Han
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - S M Son
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - H Song
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - S H Baik
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
| | - M Moon
- Molecular Neurobiology Laboratory, Department of Psychiatry and Mclean Hospital, Harvard Medical School, Belmont, MA, USA
| | - E C Yi
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology and College of Medicine or College of Pharmacy, Seoul National University, Seoul, Korea
| | - D Hwang
- 1] School of Interdisciplinary Bioscience and Bioengineering, Department of Chemical Engineering, POSTECH, Pohang, Korea [2] Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu, Korea
| | - I Mook-Jung
- Department of Biochemistry and Biomedical Sciences, Seoul National University, College of Medicine, Seoul, Korea
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Lodewyks C, White C, Bay G, Hiebert B, Wu B, Barker M, Kirkpatrick I, Arora R, Moon M, Pascoe E. Vocal Cord Paralysis Following Surgery of the Thoracic Aorta: Incidence and Impact on Clinical Outcomes. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.356] [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: 12/01/2022] Open
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Abstract
Doxorubicin is an effective anti-tumor agent with a cumulative dose-dependent cardiotoxicity. In addition to its principal toxic mechanisms involving iron and redox reactions, recent studies have described new mechanisms of doxorubicin-induced cell death, including abnormal protein processing, hyper-activated innate immune responses, inhibition of neuregulin-1 (NRG1)/ErbB(HER) signalling, impaired progenitor cell renewal/cardiac repair, and decreased vasculogenesis. Although multiple mechanisms involved in doxorubicin cardiotoxicity have been studied, there is presently no clinically proven treatment established for doxorubicin cardiomyopathy. Iron chelator dexrazoxane, angiotensin converting enzyme (ACE) inhibitors, and β-blockade have been proposed as potential preventive strategies for doxorubicin cardiotoxicity. Novel approaches such as anti-miR-146 or recombinant NRG1 to increase cardiomyocyte resistance to toxicity may be of interest in the future.
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Affiliation(s)
- Y Shi
- Division of Cardiology, Heart and Stroke/Richard Lewar Centre of Excellence, University Health Network, University of Toronto, Toronto General Hospital, Ontario, Canada
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Ishikawa Y, Kimura H, Watanabe M, Yamazaki T, Noda Y, Lee C, Kim S, Moon M. Single-crystal structure analysis by neutron 2D-PSD. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308093896] [Citation(s) in RCA: 2] [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: 11/10/2022] Open
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Dowdall J, Greenberg R, West K, Moon M, Lu Q, Francis C, Pfaff K. Separation of Components in Fenestrated and Branched Endovascular Grafting – Branch Protection or a Potentially New Mode of Failure? Eur J Vasc Endovasc Surg 2008; 36:2-9. [DOI: 10.1016/j.ejvs.2008.02.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2007] [Accepted: 02/23/2008] [Indexed: 11/25/2022]
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Zierer A, Melby S, Bakhtiary F, Dzemali O, Kleine P, Dogan S, Martens S, Moritz A, Moon M. Interatrial shunt for chronic pulmonary hypertension: Differential impact of low-flow versus high-flow shunting in an experimental surgical model. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037956] [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: 10/21/2022]
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Hepfer CE, Arnold-Croop S, Fogell H, Steudel KG, Moon M, Roff A, Zaikoski S, Rickman A, Komsisky K, Harbaugh DL, Lang GI, Keil RL. DEG1, encoding the tRNA:pseudouridine synthase Pus3p, impacts HOT1-stimulated recombination in Saccharomyces cerevisiae. Mol Genet Genomics 2005; 274:528-38. [PMID: 16231152 DOI: 10.1007/s00438-005-0042-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Accepted: 08/06/2005] [Indexed: 11/28/2022]
Abstract
In Saccharomyces cerevisiae, HOT1-stimulated recombination has been implicated in maintaining homology between repeated ribosomal RNA genes. The ability of HOT1 to stimulate genetic exchange requires RNA polymerase I transcription across the recombining sequences. The trans-acting nuclear mutation hrm3-1 specifically reduces HOT1-dependent recombination and prevents cell growth at 37 degrees . The HRM3 gene is identical to DEG1. Excisive, but not gene replacement, recombination is reduced in HOT1-adjacent sequences in deg1Delta mutants. Excisive recombination within the genomic rDNA repeats is also decreased. The hypo-recombination and temperature-sensitive phenotypes of deg1Delta mutants are recessive. Deletion of DEG1 did not affect the rate of transcription from HOT1 or rDNA suggesting that while transcription is necessary it is not sufficient for HOT1 activity. Pseudouridine synthase 3 (Pus3p), the DEG1 gene product, modifies the anticodon arm of transfer RNA at positions 38 and 39 by catalyzing the conversion of uridine to pseudouridine. Cells deficient in pseudouridine synthases encoded by PUS1, PUS2 or PUS4 displayed no recombination defects, indicating that Pus3p plays a specific role in HOT1 activity. Pus3p is unique in its ability to modulate frameshifting and readthrough events during translation, and this aspect of its activity may be responsible for HOT1 recombination phenotypes observed in deg1 mutants.
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Affiliation(s)
- C E Hepfer
- Department of Biology, Millersville University, 50 East Frederick Street, PO Box 1002, Millersville, PA 17551, USA.
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Jung S, Moon M, Park W, Lee H, Kim D. E-CpG ODN: Immune modulatory therapy of allergic asthma. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.678] [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: 11/30/2022]
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Hudson RJ, Henderson BT, Thomson IR, Moon M, Peterson MD. Pharmacokinetics of sufentanil in patients undergoing coronary artery bypass graft surgery. J Cardiothorac Vasc Anesth 2001; 15:693-9. [PMID: 11748515 DOI: 10.1053/jcan.2001.28311] [Citation(s) in RCA: 9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To determine the pharmacokinetics of sufentanil in patients undergoing coronary artery bypass graft surgery. DESIGN Prospective, multigroup study. SETTING University-affiliated hospital. PARTICIPANTS Patients with good left ventricular function undergoing elective surgery (n = 103). INTERVENTIONS Sufentanil was administered by target-controlled infusion, with target effect-site concentrations ranging from 0.4 to 4.5 ng/mL. Isoflurane was administered as required to maintain stable hemodynamics. Sufentanil pharmacokinetics were determined by population modeling. The potential effects of gender, weight, different premedications (lorazepam, morphine-scopolamine, or clonidine), and coinduction with propofol on sufentanil pharmacokinetics were explored. MEASUREMENTS AND MAIN RESULTS The first model determined was a simple 3-compartment model, without any covariates, which had these parameters: V(1) = 5.7 L, V(2) = 18.1 L, V(3) = 225 L, Cl(1) = 0.69 L/min, Cl(2) = 3.1 L/min, and Cl(3) = 1.4 L/min. The overall predictive ability during the entire pre-cardiopulmonary bypass period of this model was excellent, with virtually no bias (median prediction error, -0.4%) and good precision (median absolute prediction error, 18.4%). More complex models with the various premedications used or coinduction with propofol as covariates did not improve the predictive accuracy or precision compared with the simple 3-compartment model. Similarly, including either gender or weight as a covariate did not improve predictive ability. CONCLUSION The authors have determined a pharmacokinetic model for sufentanil that can be used to maintain desired target concentrations of sufentanil before cardiopulmonary bypass, with a high degree of accuracy and acceptable variability. Concomitantly administered medications (lorazepam, morphine-scopolamine, clonidine, or propofol) do not appear to have any clinically important effects on distribution-phase sufentanil pharmacokinetics.
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Affiliation(s)
- R J Hudson
- Department of Anesthesia, University of Manitoba, St. Boniface General Hospital, 409 Taché Avenue, Winnipeg, Manitoba, Canada R2H 2A6.
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Moon M. Freedom to pay or freedom to choose? Private contracting and Medicare beneficiaries. Health Matrix Clevel 2001; 10:21-34. [PMID: 11184041] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- M Moon
- Urban Institute, Washington, D.C., USA
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Moon M, Segal M, Weiss R. A moving target: financing Medicare for the future. Inquiry 2001; 37:338-47. [PMID: 11252444] [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
Since 1997, there has been a steady downward trend in projected Medicare spending as a share of the gross domestic product (GDP), substantially improving the long-run outlook for Medicare. But even with improvements in outlook, the required share of GDP will rise by more than 70%, and the question remains as to who will pay for Medicare in the future. This report examines a limited set of tax options and a flat beneficiary premium to illustrate the size of contributions necessary to achieve several different goals, and to explore the difference that multiple years of projections can make on these requirements.
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Affiliation(s)
- M Moon
- Urban Institute, Kellogg School of Management, Northwestern University, 2100 M St., N.W., Washington DC 20037, USA
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Affiliation(s)
- M Moon
- Urban Institute, Washington, DC 20037, USA
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Affiliation(s)
- M Moon
- Department of Chemistry, College of Science, Hanyang University, 1271 Sa-1-dong, Ansan, Kyunggi-do 425-791, Korea
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Moon M. The special health care needs of the elderly. Baxter Health Policy Rev 2000; 2:317-49. [PMID: 11066264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Interest in Medicare, the government's second largest social program after Social Security, reached a new high in 1995, not as part of health care reform, but as a vehicle for deficit reduction and because of a desire by Congress to restructure the program to encourage enhanced choice for beneficiaries and greater use of managed care. Medicaid, a major payer of long-term care and financer of coverage for low-income elderly, also is slated to undergo major restructuring in the next few years. As Congress and the nation debate the future of these key programs for older Americans, a number of critical issues deserve attention. Medicare's costs are very high--but not necessarily unreasonable in the face of the demands on health care services for this part of the population. And even with these high costs, a number of important gaps in coverage remain a problem for seniors. Deductibles and copayments are also high--especially for hospital and skilled nursing services. But pressure for change may well lead to higher, not lower, cost-sharing requirements. Medicare remains a largely fee-for-service program at a time when the national health care system is shifting increasingly to a managed care environment. Moving Medicare in that direction is one likely option for change. While it is desirable to have Medicare move in concert with the rest of the system, a number of issues stand in the way of an effortless move to managed care for the elderly. Moreover, coordination of long-term and acute care services may be even more challenging in such an environment. Medicaid covers long-term care services for older Americans, but only for those who have depleted most of their assets and income. Even when people do become eligible, Medicaid covers primarily institutional care. But little is likely to change this picture in the next few years, and private efforts through expansion of long-term care insurance will likely provide only a partial solution.
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Abstract
Post-operative computed tomography (CT) has been described as a technique for diagnosing incomplete resection or recurrence of cerebral neoplasms in humans. The characteristics of immediate postoperative CT images in dogs with intracranial pathology are unknown. This report describes findings from preoperative, immediate post-operative, and 4 week to 9 month follow-up CT examinations in two dogs with histologically-confirmed cerebral meningiomas. In images of one dog after surgery there was mild contrast enhancement of the tissue surrounding the surgical site. This enhancement had resolved in later images and was probably the result of surgically induced trauma. In post operative images of the other dog there was significant hyperattenuation of the tissues around the surgical site. In post contrast images there was increased enhancement that was evident in later images. These findings, although not supported by necropsy, probably indicate incomplete excision of the tumor.
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Affiliation(s)
- R Bergman
- Department of Small Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA 24061-0442, USA
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Moon M, Kim I, Lah MS. Three-dimensional framework constructed using nanometer-sized metallamacrocycle as a secondary building unit. Inorg Chem 2000; 39:2710-1. [PMID: 11232804 DOI: 10.1021/ic991079f] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M Moon
- Department of Chemistry, College of Science, Hanyang University, Korea
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Affiliation(s)
- R E Ariano
- Department of Pharmacy, St Boniface General Hospital, Winnipeg, Manitoba, Canada.
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Abstract
Women's (N = 364) personal characteristics and gender role attitudes were examined in relation to their support for father involvement with children. The respondents completed measures of trust, attitudes toward women, hostility, self-esteem, and father involvement. Nontraditional gender role attitudes, positive ratings of their own interpersonal trust, and low hostility toward men were predictive of the respondents' support for father involvement. Participant demographics (including age, marital status, and number of children) were unrelated to their views of father involvement. Results indicate the importance of considering the characteristics and attitudes women bring to the co-parental relationship in the examination of factors influencing father involvement with children. Findings are discussed within the context of mothers' primary child-care and gatekeeping roles.
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Affiliation(s)
- C D Hoffman
- Department of Psychology, California State University, San Bernardino 92407, USA.
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Feder J, Moon M. Can Medicare survive its saviors? Caring 1999; 18:30-3. [PMID: 10621203] [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: 02/15/2023]
Abstract
It is now an open question whether Medicare will provide adequate health coverage to the baby-boom generation as it begins turning 65 just over a decade from now. The source of uncertainty is not whether America has the resources to sustain the program; we do. The real challenge comes instead from proposals to save Medicare. Far from preserving its benefits, the major restructuring proposals under discussion would radically alter the principles on which Medicare rests and erode the protection it affords.
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Affiliation(s)
- J Feder
- Georgetown University, Washington, DC, USA
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Affiliation(s)
- R B Duncan
- Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
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Abstract
OBJECTIVE To search for concentration-related suppression of hemodynamic responsiveness by sufentanil. DESIGN Prospective, randomized, double-blind study. SETTING University hospital. PARTICIPANTS Patients undergoing elective coronary artery bypass grafting (CABG). INTERVENTION Patients were assigned to target effect-site sufentanil concentrations of 1.5 ng/mL (group L; n = 14), 3.0 ng/mL (group M; n = 13), or 4.5 ng/mL (group H; n = 12). Sufentanil was administered by computer-assisted continuous infusion. Isoflurane was used to maintain intraoperative hemodynamics near preoperative values. MEASUREMENTS AND MAIN RESULTS Hemodynamics, the electroencephalographic spectral edge (SE95), and end-tidal isoflurane concentration (ET-ISO) were measured every 10 to 30 seconds during the prebypass period. Serum sufentanil concentration was measured at intervals. Prebypass serum sufentanil concentrations were stable, averaging 3.0 +/- 0.7, 5.1 +/- 1.1, and 7.1 +/- 1.3 ng/mL in groups L, M, and H, respectively. The groups did not differ with respect to the speed of induction, intraoperative hemodynamics, incidence of isoflurane use, or isoflurane concentrations required. ET-ISO and serum sufentanil levels were not correlated. Among seven group L patients who did not require isoflurane, the average prebypass serum sufentanil concentration ranged from 1.7 to 3.3 ng/mL. CONCLUSION Sufentanil does not induce concentration-related suppression of hemodynamic responsiveness over the range studied. A stable serum sufentanil concentration of 3.0 +/- 0.7 ng/mL induces the maximal opioid effect and need not be exceeded in patients undergoing CABG. A sufentanil concentration of 1.7 ng/mL provides clinically adequate anesthesia without supplementation in some premedicated patients undergoing CABG.
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Affiliation(s)
- I R Thomson
- Department of Anesthesia, University of Manitoba, St Boniface General Hospital, Winnipeg, Canada
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Butler SM, Danzon PM, Gradison B, Helms R, Moon M, Newhouse JP, Pauly MV, Phillips M, Reinhardt UE, Reischauer RD, Roper WL, Rother J, Schaeffer LD, Wilensky GR. Crisis facing HCFA & millions of Americans. Health Aff (Millwood) 1999; 18:8-10. [PMID: 9926641 DOI: 10.1377/hlthaff.18.1.8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gage B, Moon M, Chi S. State-level variation in Medicare spending. Health Care Financ Rev 1999; 21:85-98. [PMID: 11481788 PMCID: PMC4194651] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Theoretically, Medicare provides one standard benefit package to all enrollees. But because of State-level variations in populations, service supply, and local practice patterns, national policy changes may have unequal impacts on access and service utilization. Across-the-board policy changes may create hardships in one area while appropriately discouraging use in another area. In this article, the authors describe State-level variations in Medicare enrollees, their insurance coverage, 1995 Medicare and beneficiary spending patterns in aggregate, per capita, and by service, and certain spending patterns for dually eligible beneficiaries. These data are useful for considering the State-level effects of payment reform.
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Affiliation(s)
- B Gage
- The MEDSTAT Group, Cambridge, MA 02140, USA.
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Abstract
The Medicare program is on the verge of major change. The proof of the value of reforms will not rest in how well the program meets the needs of the healthy and wealthy, but rather in whether they preserve or improve upon protections for those who would not be well served by an unregulated private sector--persons with low incomes and/or substantial health problems. This paper examines four key issues: Which beneficiaries will likely be best served by a system oriented around choice; what role traditional Medicare should continue to play and what changes will be needed; what protections are necessary for persons with low and moderate incomes; and how these reforms could be incorporated into broader changes to make Medicare more viable over time.
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Affiliation(s)
- M Moon
- Urban Institute, Washington, DC, USA
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Moon M. ["Korean-style biologist" Sok Chu-myong's taxonomical studies of butterflies]. Hanguk Kwahaksa Hakhoeji 1999; 21:157-193. [PMID: 22334960] [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: 05/31/2023]
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Moon M, Brennan N, Segal M. Improving coverage for low-income Medicare beneficiaries. Policy Brief Commonw Fund 1998:1-4. [PMID: 11729846] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Moon M, Brennan N, Segal M. Options for aiding low-income Medicare beneficiaries. Inquiry 1998; 35:346-56. [PMID: 9809061] [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: 02/09/2023]
Abstract
This paper examines the effectiveness of the Qualified Medicare Beneficiary (QMB), Specified Low-Income Medicare Beneficiary (SLMB), and Qualified Individual (QI) programs that seek to ease the financial burdens of health costs on low-income Medicare beneficiaries. While participation in these programs has been increasing steadily over time, much remains to be done to extend benefits to all those currently eligible. This paper estimates levels of participation in the existing programs and considers several scenarios under which participation could be increased further, including federalizing the existing programs, raising or eliminating asset limits, and raising income ceilings.
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Affiliation(s)
- M Moon
- Urban Institute, Washington, DC 20037, USA
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Abstract
BACKGROUND The aim of this study is to determine if femorofemoral bypass grafting is an effective operation for unilateral iliac occlusive disease, and to assess for factors that may predict a poorer outcome. A retrospective review was conducted of cases identified from a prospective audit database. METHODS Information was obtained from the clinical notes of 97 patients who had 100 femorofemoral bypass graft operations. All living patients were invited for assessment which included colour duplex sonography of the graft and measurement of the ankle brachial index. RESULTS Using life-table analysis, the five-year graft secondary patency for claudicants was 79% and for those with critical ischaemia 78%. Five-year survival for claudicants was 65% and for those with critical ischaemia, 38%. Poor distal runoff in the infrapopliteal arteries of the donor limb adversely affected graft patency. Graft survival was not affected by the indication for operation, by donor or recipient superficial femoral artery patency, or by the need for endarterectomy, pre-operative angioplasty or the graft material. CONCLUSIONS Femorofemoral bypass grafting is the procedure of choice for all patients who require surgical intervention for unilateral iliac occlusion and donor limb distal runoff may be an important determinant of graft patency.
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Affiliation(s)
- M Thompson-Fawcett
- University of Oxford, Nuffield Department of Surgery, John Radcliffe Hospital, UK
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Schulz KS, Walker M, Moon M, Waldron D, Slater M, McDonald DE. Correlation of clinical, radiographic, and surgical localization of intervertebral disc extrusion in small-breed dogs: a prospective study of 50 cases. Vet Surg 1998; 27:105-11. [PMID: 9525024 DOI: 10.1111/j.1532-950x.1998.tb00105.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [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: 02/06/2023]
Abstract
OBJECTIVE To compare prospectively clinical, radiographic, and surgical findings of intervertebral disc extrusion (IDE) localization in small-breed dogs and to determine the best means of lesion localization for the purpose of hemilaminectomy. STUDY DESIGN Clinical, radiographic, and surgical findings of small-breed dogs with thoracolumbar IDE were prospectively compared for agreement on lesion localization. SAMPLE POPULATION 50 small-breed dogs with IDE treated at the three participating veterinary hospitals were included in the study if no other confounding diseases were identified and if the owner gave permission for diagnostic tests and surgery. METHODS Clinical and surgical findings were recorded by the surgeon assigned to the case. Radiographic studies were evaluated independently by two radiologists blinded as to the clinical and surgical findings. kappa values and 95% confidence intervals were calculated for agreement on lesion localization by clinical, radiographic, and surgical means and for agreement between radiologists. RESULTS kappa values for agreement of lesion localization were as follows: clinical versus surgical, 0.595; radiologist A versus radiologist B, 0.81; radiologist A versus surgical findings, 0.60; radiologist B versus surgical findings, 0.71. Both radiologists' interpretation of IDE localization agreed with surgical localization in 60% of cases. CONCLUSIONS Clinical lateralization of IDE was found to be the least reliable factor of those studied for determining on which side the hemilaminectomy should be performed. Results of this study differ from those of previous studies examining the reliability of myelography to localize the site of IDE accurately. The results of this study further suggest that surgery may not be an absolute standard for determination of the localization of IDE in small-breed dogs. CLINICAL RELEVANCE Intervertebral disc extrusion in small-breed dogs frequently results in bilateral distribution of extruded material. Computed tomography or magnetic resonance imaging may be necessary to delineate completely the distribution of extruded disc material in IDE.
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Affiliation(s)
- K S Schulz
- Department of Surgical and Radiological Sciences, University of California, School of Veterinary Medicine, Davis 95616, USA
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