1
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Pabinger I, Ayash-Rashkovsky M, Escobar M, Konkle BA, Mingot-Castellano ME, Mullins ES, Negrier C, Pan L, Rajavel K, Yan B, Chapin J. Multicenter assessment and longitudinal study of the prevalence of antibodies and related adaptive immune responses to AAV in adult males with hemophilia. Gene Ther 2024:10.1038/s41434-024-00441-5. [PMID: 38355967 DOI: 10.1038/s41434-024-00441-5] [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] [Received: 06/13/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
Adeno-associated virus (AAV) based gene therapy has demonstrated effective disease control in hemophilia. However, pre-existing immunity from wild-type AAV exposure impacts gene therapy eligibility. The aim of this multicenter epidemiologic study was to determine the prevalence and persistence of preexisting immunity against AAV2, AAV5, and AAV8, in adult participants with hemophilia A or B. Blood samples were collected at baseline and annually for ≤3 years at trial sites in Austria, France, Germany, Italy, Spain, and the United States. At baseline, AAV8, AAV2, and AAV5 neutralizing antibodies (NAbs) were present in 46.9%, 53.1%, and 53.4% of participants, respectively; these values remained stable at Years 1 and 2. Co-prevalence of NAbs to at least two serotypes and all three serotypes was present at baseline for ~40% and 38.2% of participants, respectively. For each serotype, ~10% of participants who tested negative for NAbs at baseline were seropositive at Year 1. At baseline, 38.3% of participants had detectable cell mediated immunity by ELISpot, although no correlations were observed with the humoral response. In conclusion, participants with hemophilia may have significant preexisting immunity to AAV capsids. Insights from this study may assist in understanding capsid-based immunity trends in participants considering AAV vector-based gene therapy.
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Affiliation(s)
- Ingrid Pabinger
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | | | - Miguel Escobar
- University of Texas Health Science Center, McGovern Medical School and Gulf States Hemophilia and Thrombophilia Center, Houston, TX, USA
| | - Barbara A Konkle
- BloodWorks Northwest, Seattle, WA, USA
- Division of Hematology, University of Washington School of Medicine, Seattle, WA, USA
| | - María Eva Mingot-Castellano
- Hospital Regional Universitario de Málaga, Málaga, Spain
- Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - Eric S Mullins
- Division of Hematology, Cincinnati Children's Hospital Medical Center and University of Cincinnati-College of Medicine, Cincinnati, OH, USA
| | - Claude Negrier
- UR4609 Hemostase & Thrombose, University Lyon 1, Lyon, France
| | - Luying Pan
- Takeda Development Center Americas Inc, Cambridge, MA, USA
| | | | - Brian Yan
- Takeda Development Center Americas Inc, Cambridge, MA, USA
| | - John Chapin
- Takeda Development Center Americas Inc, Cambridge, MA, USA.
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Elhadad S, Chadburn A, Magro C, Van Besien K, Roberson EDO, Atkinson JP, Terry H, Greenberg J, Reid W, Chapin J, Copertino D, Geramfard S, Rodriguez LB, Orfali N, Gerghis U, Shore T, Mayer S, Ahamed J, Laurence J. C5b-9 and MASP2 deposition in skin and bone marrow microvasculature characterize hematopoietic stem cell transplant-associated thrombotic microangiopathy. Bone Marrow Transplant 2022; 57:1445-1447. [PMID: 35661836 DOI: 10.1038/s41409-022-01723-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 05/24/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Sonia Elhadad
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Amy Chadburn
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Cynthia Magro
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Koen Van Besien
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Elisha D O Roberson
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - John P Atkinson
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, MO, USA
| | - Hunter Terry
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - June Greenberg
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Whitney Reid
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - John Chapin
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
- CRISPR Therapeutics, Cambridge, MA, USA
| | - Dennis Copertino
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Sahar Geramfard
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Lizamarie Bachier Rodriguez
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
- Montefiore Medical Center, New York, NY, USA
| | - Nina Orfali
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Usama Gerghis
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
- Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Tsiporah Shore
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Sebastian Mayer
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | | | - Jeffrey Laurence
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA.
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Francis JT, Rozenboym A, von Kraus L, Xu S, Chhatbar P, Semework M, Hawley E, Chapin J. Similarities Between Somatosensory Cortical Responses Induced via Natural Touch and Microstimulation in the Ventral Posterior Lateral Thalamus in Macaques. Front Neurosci 2022; 16:812837. [PMID: 35250454 PMCID: PMC8888535 DOI: 10.3389/fnins.2022.812837] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
Lost sensations, such as touch, could be restored by microstimulation (MiSt) along the sensory neural substrate. Such neuroprosthetic sensory information can be used as feedback from an invasive brain-machine interface (BMI) to control a robotic arm/hand, such that tactile and proprioceptive feedback from the sensorized robotic arm/hand is directly given to the BMI user. Microstimulation in the human somatosensory thalamus (Vc) has been shown to produce somatosensory perceptions. However, until recently, systematic methods for using thalamic stimulation to evoke naturalistic touch perceptions were lacking. We have recently presented rigorous methods for determining a mapping between ventral posterior lateral thalamus (VPL) MiSt, and neural responses in the somatosensory cortex (S1), in a rodent model (Choi et al., 2016; Choi and Francis, 2018). Our technique minimizes the difference between S1 neural responses induced by natural sensory stimuli and those generated via VPL MiSt. Our goal is to develop systems that know what neural response a given MiSt will produce and possibly allow the development of natural “sensation.” To date, our optimization has been conducted in the rodent model and simulations. Here, we present data from simple non-optimized thalamic MiSt during peri-operative experiments, where we used MiSt in the VPL of macaques, which have a somatosensory system more like humans, as compared to our previous rat work (Li et al., 2014; Choi et al., 2016). We implanted arrays of microelectrodes across the hand area of the macaque S1 cortex as well as in the VPL. Multi and single-unit recordings were used to compare cortical responses to natural touch and thalamic MiSt in the anesthetized state. Post-stimulus time histograms were highly correlated between the VPL MiSt and natural touch modalities, adding support to the use of VPL MiSt toward producing a somatosensory neuroprosthesis in humans.
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Affiliation(s)
- Joseph Thachil Francis
- Cullen College of Engineering, Department of Biomedical Engineering and Electrical and Computer Engineering, University of Houston, Houston, TX, United States
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
- *Correspondence: Joseph Thachil Francis,
| | - Anna Rozenboym
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
- Department of Biological Sciences, Kingsborough Community College-CUNY, Brooklyn, NY, United States
| | - Lee von Kraus
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
| | - Shaohua Xu
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
| | - Pratik Chhatbar
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
- Department of Neurology, Duke University School of Medicine, Durham, NC, United States
| | - Mulugeta Semework
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
| | - Emerson Hawley
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
| | - John Chapin
- Department of Physiology and Pharmacology, State of New York Downstate Medical School, Brooklyn, NY, United States
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4
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Chapin J, Cohen AR, Neufeld EJ, Vichinsky E, Giardina PJ, Boudreaux J, Le BC, Kenney K, Trimble S, Thompson AA. An update on the US adult thalassaemia population: a report from the CDC thalassaemia treatment centres. Br J Haematol 2021; 196:380-389. [PMID: 34775608 DOI: 10.1111/bjh.17920] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 10/13/2021] [Indexed: 01/19/2023]
Abstract
Thalassaemia is caused by genetic globin defects leading to anaemia, transfusion-dependence and comorbidities. Reduced survival and systemic organ disease affect transfusion-dependent thalassaemia major and thalassaemia intermedia. Recent improvements in clinical management have reduced thalassaemia mortality. The therapeutic landscape of thalassaemia may soon include gene therapies as functional cures. An analysis of the adult US thalassaemia population has not been performed since the Thalassemia Clinical Research Network cohort study from 2000 to 2006. The Centers for Disease Control and Prevention supported US thalassaemia treatment centres (TTCs) to compile longitudinal information on individuals with thalassaemia. This dataset provided an opportunity to evaluate iron balance, chelation, comorbidities and demographics of adults with thalassaemia receiving care at TTCs. Two adult cohorts were compared: those over 40 years old (n = 75) and younger adults ages 18-39 (n = 201). The older adult cohort was characterized by higher numbers of iron-related comorbidities and transfusion-related complications. By contrast, younger adults had excess hepatic and cardiac iron and were receiving combination chelation therapy. The ethnic composition of the younger cohort was predominantly of Asian origin, reflecting the demographics of immigration. These findings demonstrate that comprehensive care and periodic surveys are needed to ensure optimal health and access to emerging therapies.
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Affiliation(s)
- John Chapin
- Division of Hematology & Medical Oncology, Weill Cornell Medicine-New York Presbyterian Hospital, New York, NY, USA
| | - Alan R Cohen
- Division of Hematology, Children's Hospital Philadelphia, Philadelphia, PA, USA
| | - Ellis J Neufeld
- Boston Children's Hospital- Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA, USA.,Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Elliott Vichinsky
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital Oakland, Oakland, CA, USA
| | - Patricia J Giardina
- Division of Pediatric Hematology/Oncology, Weill Cornell Medicine-New York Presbyterian Hospital, New York, NY, USA
| | - Jeanne Boudreaux
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta at Scottish Rite, Atlanta, GA, USA
| | - Binh C Le
- Bleeding Team, Epidemiology & Surveillance Branch, Division of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Kristy Kenney
- Division of Cancer Prevention and Control, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Sean Trimble
- NCIRD, Immunization Services Division, Vaccine Supply and Assurance Branch, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Alexis A Thompson
- Robert H Lurie Comprehensive Cancer Center of Northwestern University, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
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Abstract
Findings from a survey of children and adolescents (N = 645) documents that students witness and experience a range of abuse at home and at school. Participants freely acknowledged pushing or shoving (46%) and slapping or hitting peers (40%). The study contributes to the literature by focusing on upstanding (active versus passive bystander intervention) and parenting styles. Findings reveal an interesting disconnect between those who say they will intervene when confronted by friends' or peers' bullying behaviors and those who actually have intervened. Children and adolescents with authoritarian parents are more likely to say they would intervene to help peers, but when asked if they actually have done so, they are the least likely to follow-through. In contrast, children with authoritative or permissive parents show the opposite pattern: No significant difference in their intent to intervene, but they are more likely to become upstanders, rather than passive bystanders when actually confronted with bullying behavior.
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Affiliation(s)
- John Chapin
- Pennsylvania State University, 100 University Drive, Monaca, PA 15001 USA
| | - Alexey Stern
- Pennsylvania State University, 100 University Drive, Monaca, PA 15001 USA
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Elhadad S, Chapin J, Copertino D, Van Besien K, Ahamed J, Laurence J. MASP2 levels are elevated in thrombotic microangiopathies: association with microvascular endothelial cell injury and suppression by anti-MASP2 antibody narsoplimab. Clin Exp Immunol 2020; 203:96-104. [PMID: 32681658 PMCID: PMC7405159 DOI: 10.1111/cei.13497] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/08/2020] [Accepted: 07/09/2020] [Indexed: 12/20/2022] Open
Abstract
Involvement of the alternative complement pathway (AP) in microvascular endothelial cell (MVEC) injury characteristic of a thrombotic microangiopathy (TMA) is well documented. However, the role of the lectin pathway (LP) of complement has not been explored. We examined mannose-binding lectin associated serine protease (MASP2), the effector enzyme of the LP, in thrombotic thrombocytopenic purpura, atypical hemolytic uremic syndrome and post-allogeneic hematopoietic stem cell transplantation (alloHSCT) TMAs. Plasma MASP2 and terminal complement component sC5b-9 levels were assessed by enzyme-linked immunosorbent assay (ELISA). Human MVEC were exposed to patient plasmas, and the effect of the anti-MASP2 human monoclonal antibody narsoplimab on plasma-induced MVEC activation was assessed by caspase 8 activity. MASP2 levels were highly elevated in all TMA patients versus controls. The relatively lower MASP2 levels in alloHSCT patients with TMAs compared to levels in alloHSCT patients who did not develop a TMA, and a significant decrease in variance of MASP2 levels in the former, may reflect MASP2 consumption at sites of disease activity. Plasmas from 14 of the 22 TMA patients tested (64%) induced significant MVEC caspase 8 activation. This was suppressed by clinically relevant levels of narsoplimab (1·2 μg/ml) for all 14 patients, with a mean 65·7% inhibition (36.8-99.4%; P < 0·0001). In conclusion, the LP of complement is activated in TMAs of diverse etiology. Inhibition of MASP2 reduces TMA plasma-mediated MVEC injury in vitro. LP inhibition therefore may be of therapeutic benefit in these disorders.
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Affiliation(s)
- S Elhadad
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - J Chapin
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - D Copertino
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - K Van Besien
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
| | - J Ahamed
- Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - J Laurence
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, NY, USA
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Abstract
Factor XI (FXI) deficiency is an uncommon autosomal disorder with variable bleeding phenotype, making peripartum management challenging. We describe our experience in pregnant women with FXI deficiency and identify strategies to minimize the use of hemostatic agents and increase utilization of neuraxial anesthesia. Electronic records of 28 pregnant women with FXI deficiency seen by a hematology service in an academic medical center from January 2006 to August 2018 were reviewed. Data on bleeding, obstetric history, peripartum management, and FXI activity were collected. Partial FXI deficiency was defined as >20 IU/dL and severe <20 IU/dL. Median FXI activity was 42 IU/dL (range <1-73 IU/dL), and median activated partial thromboplastin time was 32.2 seconds (range: 27.8-75 seconds). There were 64 pregnancies: 53 (83%) live births and 11 (17%) pregnancy losses. Postpartum hemorrhage occurred in 9 (17%) pregnancies. Antifibrinolytic agents and fresh frozen plasma were used only in women with severe deficiency (42% with bleeding and 17% with no bleeding phenotype, respectively). Neuraxial anesthesia was successfully administered in 32 (59%) deliveries. Most women with FXI deficiency have uncomplicated pregnancies and deliveries with minimal hemostatic support. Neuraxial anesthesia can be safely administered in most women.
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Affiliation(s)
- Gloria F Gerber
- Department of Medicine, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
| | - Kelsey A Klute
- Division of Oncology and Hematology, University of Nebraska Medical Center, Omaha, NE, USA
| | - John Chapin
- Clinical Development, CRISPR Therapeutics, Cambridge, MA, USA
| | - James Bussel
- Division of Hematology-Oncology, Department of Pediatrics, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
| | - Maria T DeSancho
- Division of Hematology-Oncology, Department of Medicine, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
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Chapin J. Upregulating hemoglobin F using CRISPR/Cas9 gene editing in beta-thalassemia and sickle cell disease. Leuk Res 2019. [DOI: 10.1016/s0145-2126(19)30235-8] [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]
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Abstract
Von Willebrand disease (VWD) is an inherited bleeding disorder that affects up to 1% of the population. In most cases, VWD results from a mutation in the von Willebrand Factor (VWF) gene, which alters the amount and function of VWF, a key glycoprotein in both primary and secondary hemostasis. A comprehensive analysis of patients with VWD should include VWF activity, antigen levels, platelet function, and a careful bleeding history. Treatment options include antifibrinolytics, desmopressin, and VWF replacement therapy. VWF levels fluctuate due to age, stress, environmental exposures, and pharmacologic treatment. Treatment guidelines exist to treat and prevent bleeding for patients undergoing surgery and medical procedures, but often these must be reevaluated in the setting of age-related comorbidities including cardiovascular events, venous thrombosis, and malignancy. In addition, many age-related complications are associated with a secondary acquired von Willebrand syndrome (AVWS), including malignancies, hypothyroidism, cardiovascular diseases, and cardiac replacement devices. The current literature is limited by a lack of older patients in clinical trials. Larger studies are needed to determine if age-related comorbidities affect VWD patients at different frequencies than the general elderly population. There is also a significant need for registry-based studies to evaluate many age-related comorbidities in VWD patients.
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Affiliation(s)
- John Chapin
- Department of Hematology, Shire, Lexington, MA, USA,
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Chapin J, Giardina PJ. Thalassemia Syndromes. Hematology 2018. [DOI: 10.1016/b978-0-323-35762-3.00040-8] [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: 01/19/2023] Open
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Abdel-Wahab O, Abrahm JL, Adams S, Adewoye AH, Allen C, Ambinder RF, Anasetti C, Anastasi J, Anderson JA, Antin JH, Antony AC, Araten DJ, Armand P, Armstrong G, Armstrong SA, Arnold DM, Artz AS, Awan FT, Baglin TP, Benson DM, Benz EJ, Berliner N, Bhagat G, Bhardwaj N, Bhatia R, Bhatia S, Bhatt MD, Bhatt VR, Bitan M, Blinderman CD, Bollard CM, Braun BS, Brenner MK, Brittenham GM, Brodsky RA, Brown M, Broxmeyer HE, Brummel-Ziedins K, Brunner AM, Buadi FK, Burkhardt B, Burns M, Byrd JC, Caimi PF, Caligiuri MA, Canavan M, Cantor AB, Carcao M, Carroll MC, Carty SA, Castillo JJ, Chan AK, Chapin J, Chiu A, Chute JP, Clark DB, Coates TD, Cogle CR, Connell NT, Cooke E, Cooley S, Corradini P, Creager MA, Creger RJ, Cromwell C, Crowther MA, Cushing MM, Cutler C, Dang CV, Danial NN, Dave SS, DeCaprio JA, Dinauer MC, Dinner S, Diz-Küçükkaya R, Dodd RY, Donato ML, Dorshkind K, Dotti G, Dror Y, Dunleavy K, Dvorak CC, Ebert BL, Eck MJ, Eikelboom JW, Epperla N, Ershler WB, Evans WE, Faderl S, Ferrara JL, Filipovich AH, Fischer M, Fredenburgh JC, Friedman KD, Fuchs E, Fuller SJ, Gailani D, Galipeau J, Gallagher PG, Ganapathi KA, Gardner LB, Gee AP, Gerson SL, Gertz MA, Giardina PJ, Gibson CJ, Golan K, Golub TR, Gonzales MJ, Gotlib J, Gottschalk S, Grant MA, Graubert TA, Gregg XT, Gribben JG, Gross DM, Gruber TA, Guitart J, Gurbuxani S, Gur-Cohen S, Gutierrez A, Hamadani M, Hari PN, Hartwig JH, Hayman SR, Hayward CP, Hebbel RP, Heslop HE, Hillis C, Hillyer CD, Ho K, Hockenbery DM, Hoffman R, Hogg KE, Holtan SG, Horny HP, Hsu YMS, Hunter ZR, Huntington JA, Iancu-Rubin C, Iqbal A, Isenman DE, Israels SJ, Italiano JE, Jaffe ES, Jaffer IH, Jagannath S, Jäger U, Jain N, James P, Jeha S, Jordan MB, Josephson CD, Jung M, Kager L, Kambayashi T, Kanakry JA, Kantarjian HM, Kaplan J, Karafin MS, Karsan A, Kaufman RJ, Kaufman RM, Keller FG, Kelly KM, Kessler CM, Key NS, Keyzner A, Khandoga AG, Khanna-Gupta A, Khatib-Massalha E, Klein HG, Knoechel B, Kollet O, Konkle BA, Kontoyiannis DP, Koreth J, Koretzky GA, Kotecha D, Kremyanskaya M, Kumari A, Kuzel TM, Küppers R, Lacy MQ, Ladas E, Landier W, Lapid K, Lapidot T, Larson PJ, Levi M, Lewis RE, Liebman HA, Lillicrap D, Lim W, Lin JC, Lindblad R, Lip GY, Little JA, Lohr JG, López JA, Luscinskas FW, Maciejewski JP, Majhail NS, Manches O, Mandle RJ, Mann KG, Manno CS, Marcogliese AN, Mariani G, Marincola FM, Mascarenhas J, Massberg S, McEver RP, McGrath E, McKinney MS, Mehta RS, Mentzer WC, Merlini G, Merryman R, Michel M, Migliaccio AR, Miller JS, Mims MP, Mondoro TH, Moorehead P, Muniz LR, Munshi NC, Najfeld V, Nayak L, Nazy I, Neff AT, Ness PM, Notarangelo LD, O'Brien SH, O'Connor OA, O'Donnell M, Olson A, Orkin SH, Pai M, Pai SY, Paidas M, Panch SR, Pande RL, Papayannopoulou T, Parikh R, Petersdorf EW, Peterson SE, Pittaluga S, Ponce DM, Popolo L, Prchal JT, Pui CH, Puigserver P, Rak J, Ramos CA, Rand JH, Rand ML, Rao DS, Ravandi F, Rawlings DJ, Reddy P, Reding MT, Reiter A, Rice L, Riese MJ, Ritchey AK, Roberts DJ, Roman E, Rooney CM, Rosen ST, Rosenthal DS, Rossmann MP, Rot A, Rowley SD, Rubnitz JE, Rydz N, Salama ME, Sauk S, Saunthararajah Y, Savage W, Scadden D, Schaefer KG, Schiffman F, Schneidewend R, Schrier SL, Schuchman EH, Scullion BF, Selvaggi KJ, Senoo K, Shaheen M, Shaz BH, Shelburne SA, Shpall EJ, Shurin SB, Siegal D, Silberstein LE, Silberstein L, Silverstein RL, Sloan SR, Smith FO, Smith JW, Smith K, Steensma DP, Steinberg MH, Stock W, Storry JR, Stramer SL, Strauss RG, Stroncek DF, Taylor J, Thota S, Treon SP, Tulpule A, Valdes RF, Valent P, Vedantham S, Vercellotti GM, Verneris MR, Vichinsky EP, von Andrian UH, Vose JM, Wagner AJ, Wang E, Wang JH, Warkentin TE, Wasserstein MP, Webster A, Weisdorf DJ, Weitz JI, Westhoff CM, Wheeler AP, Widick P, Wiley JS, William BM, Williams DA, Wilson WH, Wolfe J, Wolgast LR, Wood D, Wu J, Yahalom J, Yee DL, Younes A, Young NS, Zeller MP. Contributors. Hematology 2018. [DOI: 10.1016/b978-0-323-35762-3.00168-2] [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] Open
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13
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Klute K, DeFilippis EM, Shillingford K, Chapin J, DeSancho MT. Clinical presentations, risk factors, treatment and outcomes in patients with splanchnic vein thrombosis: a single-center experience. J Thromb Thrombolysis 2017; 42:267-71. [PMID: 26831481 DOI: 10.1007/s11239-016-1337-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Splanchnic vein thrombosis (SVT) is an uncommon form of venous thrombosis. Management can be challenging due to underlying conditions, increased bleeding risk, and lack of evidence from clinical trials. We sought to characterize the presentation and management of patients with SVT at a large tertiary hospital. A total of 43 patients' electronic medical records were reviewed. Median age at diagnosis was 43 (18-71). Sixteen patients had isolated portal vein thrombosis (37.2 %), and 16 (37.2 %) had thrombosis involving multiple splanchnic veins. Abdominal pain was the most common clinical presentation (67.4 %). Thrombophilia was present in 18 patients (41.9 %), nine had underlying liver disease (20.9 %) and seven had inflammatory bowel disease (16.3 %). Thirty-nine (90.7 %) patients were treated with anticoagulation, and 11(25.6 %) of these patients underwent interventional procedures. Thirty (69.8 %) patients remained on indefinite anticoagulation. Results of follow-up imaging at least 1 month after diagnosis were available for 29 patients; imaging showed chronic, stable thrombosis in 14 patients (48.3 %), resolution of thrombosis in 13 patients (44.8 %) and asymptomatic progression in two patients (6.9 %). Recurrent thrombosis occurred in four patients (9.3 %). Major bleeding occurred in eight patients who received anticoagulation (18.6 %), including fatal subdural hematoma in one patient. In this cohort of patients managed by hematologists and gastroenterologists, the majority of patients were treated with anticoagulation. Interventional procedures were higher than in previously reported series. Our study strongly supports the interdisciplinary management of splanchnic venous thrombosis.
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Affiliation(s)
- Kelsey Klute
- Division of Hematology and Medical Oncology, Weill-Cornell Medical College, 1305 York Avenue 7th Floor, New York, NY, 10021, USA
| | | | | | - John Chapin
- Division of Hematology and Medical Oncology, Weill-Cornell Medical College, 1305 York Avenue 7th Floor, New York, NY, 10021, USA
| | - Maria T DeSancho
- Division of Hematology and Medical Oncology, Weill-Cornell Medical College, 1305 York Avenue 7th Floor, New York, NY, 10021, USA.
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Abstract
Many complex elements contribute to normal hemostasis, and an imbalance of these elements may lead to abnormal bleeding. In addition to evaluating medication effects, the hematologist must evaluate for congenital or acquired deficiencies in coagulation factors and platelet disorders. This evaluation should include a thorough bleeding history with careful attention to prior hemostatic challenges and common laboratory testing, including coagulation studies and/or functional platelet assays. An accurate diagnosis of a bleeding diathesis and selection of appropriate treatment are greatly aided by a basic understanding of the mechanisms of disease and the tests used to diagnose them.
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Affiliation(s)
- Marcia Paddock
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine and New York Presbyterian Hospital, 520 East 70th Street, Starr Pavilion, 3rd Floor, New York, NY 10065, USA.
| | - John Chapin
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine and New York Presbyterian Hospital, 520 East 70th Street, Starr Pavilion, 3rd Floor, New York, NY 10065, USA
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Chapin J, Lee CS, Zhang H, Zehnder JL, Bussel JB. Gender and duration of disease differentiate responses to rituximab-dexamethasone therapy in adults with immune thrombocytopenia. Am J Hematol 2016; 91:907-11. [PMID: 27220625 DOI: 10.1002/ajh.24434] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 05/19/2016] [Accepted: 05/22/2016] [Indexed: 01/19/2023]
Abstract
Adults often develop chronic immune thrombocytopenia (ITP) for which treatment order is uncertain. Rituximab and three cycles of dexamethasone (4R + 3Dex) improve treatment responses and short-term disease control but long-term outcome is not known. In adults with ITP treated with 4R + 3D, we sought long-term outcome and associated prognostic variables. Forty-nine adults treated at Weill-Cornell received 4R + 3Dex. Their clinical characteristics were reviewed. Duration was median time to treatment failure; Kaplan-Meier estimates were developed. Vbeta Tcell receptor (VBTCR) repertoire was obtained after treatment in 36 patients. Patients were adults with ITP 18-64 years old, median age 37. The 27 females were twice as likely to have an ongoing response to 4R + 3Dex (44.1%) as males (19.6%; P = 0.009). For ITP duration <12 months, 52.7% of patients had continuing responses to 4R + 3Dex compared to 15.3% of patients with diagnosis >12 months (P = 0.02). Females with ITP duration of <12 months had continuing responses in 78.6%, compared to males with <12 months duration of ITP (21.2%). For patients with disease duration <12 months, 67% of females had continuing responses, compared to 31% of males (P = 0.004). Post-treatment polyclonal VBTCR was seen in 9/10 continuing responders (six female, three male) but only 13/26 relapsers/nonresponders (P = 0.068). Durable remissions after treatment with 4R + 3Dex were more frequent in female patients with <12 months of ITP duration and those with polyclonal VBTCR after treatment, emphasizing the roles of duration of disease, gender and T cells in chronic ITP. Differences in pathophysiology of ITP by gender and by duration of ITP require further study. Am. J. Hematol. 91:907-911, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- John Chapin
- Division of Hematology-Oncology, Department of Medicine; New York Presbyterian Hospital, Weill Cornell Medicine; New York New York
| | - Christina S. Lee
- Division of Hematology-Oncology, Department of Pediatrics; Weill Cornell Medicine; New York New York
| | - Haiyu Zhang
- Department of Pathology; Stanford University School of Medicine; Palo Alto California
| | - James L. Zehnder
- Department of Pathology; Stanford University School of Medicine; Palo Alto California
| | - James B. Bussel
- Division of Hematology-Oncology, Department of Medicine; New York Presbyterian Hospital, Weill Cornell Medicine; New York New York
- Division of Hematology-Oncology, Department of Pediatrics; Weill Cornell Medicine; New York New York
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Abstract
This study is the first to document optimistic bias among middle and high school students within the context of school violence. Findings from a survey of 1,508 students indicate that optimistic bias provides a good framework for understanding students’ perceptions of school violence, suggesting a course of action to decrease bias in order to encourage students to take self-protective measures. The study also explores the relative contributions of personal attributes and the media in the creation and preservation of optimistic biases.
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17
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Chapin J, Bamme J, Hsu F, Christos P, DeSancho M. Outcomes in Patients With Hemophilia and von Willebrand Disease Undergoing Invasive or Surgical Procedures. Clin Appl Thromb Hemost 2016; 23:148-154. [PMID: 27418638 DOI: 10.1177/1076029616658116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Adults with hemophilia A (HA), hemophilia B (HB), and von Willebrand disease (VWD) frequently require surgery and invasive procedures. However, there is variability in perioperative management guidelines. We describe our periprocedural outcomes in this setting. A retrospective chart review from January 2006 to December 2012 of patients with HA, HB, and VWD undergoing surgery or invasive procedures was conducted. Type of procedures, management including the use of continuous factor infusion, and administration of antifibrinolytics were reviewed. Adverse outcomes were defined as acute bleeding (<48 hours), delayed bleeding (≥48 hours), transfusion, inhibitor development, and thrombosis. We identified 59 patients with HA and HB. In all, 24 patients had severe hemophilia and 12 had mild/moderate hemophilia. Twelve patients had inhibitors. There were also 5 female carriers of HA and 6 patients with VWD. There were 34 major surgeries (26 orthopedic, 8 nonorthopedic) and 129 minor surgeries. Continuous infusion was used in 55.9% of major surgeries versus 8.5% of minor surgeries. Antifibrinolytics were administered in 14.7% of major surgeries versus 23.2% of minor surgeries. In all, 4 patients developed acute bleeding and 10 patients developed delayed bleeding. Delayed bleeding occurred in 28.6% of genitourinary procedures and in 16.1% of dental procedures. Five patients acquired an inhibitor and 2 had thrombosis. In conclusion, patients with HA, HB, or VWD had similar rates of adverse outcomes when undergoing minor surgeries or major surgeries. This finding underscores the importance of an interdisciplinary management and procedure-specific guidelines for patients with hemophilia and VWD prior to even minor invasive procedures.
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Affiliation(s)
- John Chapin
- 1 Division of Hematology/Oncology, Weill Cornell Medicine, New York, NY, USA.,2 Weill Cornell Comprehensive Hemophilia Treatment Center, New York, NY, USA
| | - Jaqueline Bamme
- 1 Division of Hematology/Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Fraustina Hsu
- 2 Weill Cornell Comprehensive Hemophilia Treatment Center, New York, NY, USA
| | - Paul Christos
- 3 Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, NY, USA
| | - Maria DeSancho
- 1 Division of Hematology/Oncology, Weill Cornell Medicine, New York, NY, USA.,2 Weill Cornell Comprehensive Hemophilia Treatment Center, New York, NY, USA
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Chapin J, Klute K, Christos P, DeSancho M. The safety of chronic antithrombotic therapy in patients with factor XI deficiency. Br J Haematol 2016; 179:506-508. [PMID: 27392111 DOI: 10.1111/bjh.14227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 05/25/2016] [Indexed: 11/29/2022]
Affiliation(s)
- John Chapin
- Division of Hematology and Medical Oncology, Department of Medicine, New York, NY, USA
| | - Kelsey Klute
- Division of Hematology and Medical Oncology, Department of Medicine, New York, NY, USA
| | - Paul Christos
- Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, NY, USA
| | - Maria DeSancho
- Division of Hematology and Medical Oncology, Department of Medicine, New York, NY, USA
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Abstract
OBJECTIVE The objective of this study was to describe complement activation in hemostatic and pathologic states of coagulation and in the acquired and congenital hemolytic anemias. METHODS AND RESULTS We review published and emerging data on the involvement of the classic, alternative and lectin-based complement pathways in coagulation and the hemolytic anemias. The alternative pathway in particular is always "on," at low levels, and is particularly sensitive to hyper-activation in a variety of physiologic and pathologic states including infection, autoimmune disorders, thrombosis and pregnancy, requiring tight control predicated on a variety of soluble and membrane bound regulatory proteins. In acquired hemolytic anemias such as paroxysmal nocturnal hemoglobinuria (PNH) and cold agglutinin disease (CAD), the complement system directly induces red blood cell injury, resulting in intravascular and extravascular hemolysis. In congenital hemolytic anemias such as sickle cell disease and β-thalassemia, the complement system may also contribute to thrombosis and vascular disease. Complement activation may also lead to a storage lesion in red blood cells prior to transfusion. CONCLUSION Complement pathways are activated in hemolytic anemias and are closely linked with thrombosis. In acquired disorders such as PNH and possibly CAD, inhibition of the alternative complement pathway improves clinical outcomes and reduces thrombosis risk. Whether complement inhibition has a similar role in congenital hemolytic anemias apart from the atypical hemolytic-uremic (aHUS)-type thrombotic microangiopathies remains to be determined.
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Affiliation(s)
- John Chapin
- Department of Medicine, Division of Hematology-Oncology, Weill Cornell Medicine-New York Presbyterian, New York, NY, USA.
| | - Hunter S Terry
- Department of Medicine, Division of Hematology-Oncology, Weill Cornell Medicine-New York Presbyterian, New York, NY, USA
| | - Dorothy Kleinert
- Department of Medicine, Division of Hematology-Oncology, Weill Cornell Medicine-New York Presbyterian, New York, NY, USA
| | - Jeffrey Laurence
- Department of Medicine, Division of Hematology-Oncology, Weill Cornell Medicine-New York Presbyterian, New York, NY, USA
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Rutherford SC, Martin P, Chapin J. Management strategies in patients with diffuse large B-cell lymphoma and severe haemophilia. Haemophilia 2015; 21:e445-7. [PMID: 26178703 DOI: 10.1111/hae.12741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2015] [Indexed: 12/18/2022]
Affiliation(s)
- S C Rutherford
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - P Martin
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - J Chapin
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College, New York, NY, USA
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Chapin J, Shore T, Forsberg P, Desman G, Van Besien K, Laurence J. Hematopoietic transplant-associated thrombotic microangiopathy: case report and review of diagnosis and treatments. Clin Adv Hematol Oncol 2014; 12:565-573. [PMID: 25654478] [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: 06/04/2023]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) refers to inflammatory and thrombotic diseases of the microvasculature characterized by hemolytic anemia, thrombocytopenia, and evidence of organ damage, particularly acute renal failure. This syndrome occurs in 10% to 20% of patients with allogeneic hematopoietic stem cell transplants (HSCTs). It is much less frequent in the autologous setting. TA-TMAs present diagnostic challenges because they may not clearly fall into one of the categories of the 2 major TMAs: atypical hemolytic uremic syndrome (aHUS) and thrombotic thrombocytopenic purpura (TTP). In addition, complications of the transplant itself, including infection, graft-versus-host disease, and disseminated intravascular coagulation, as well as the side effects of immunosuppressive drugs, can mimic a TMA. Because the pathophysiology of TA-TMA is poorly understood, current treatment options are suboptimal, and the condition carries a very high mortality rate. In 3 recent case summaries, the median acute response rate to plasma exchange was as high as 55%, but this therapy failed to alter underlying disease pathology and had little impact on overall mortality, which was approximately 80%. Indeed, the vast majority of TA-TMA patients lack suppression of ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) activity to less than 5% to 10% of normal and do not have a complete response to plasma exchange, characteristics indicating that a TTP-like disorder is not involved. Recent advances in the treatment of aHUS may offer a therapeutic option in the aHUS-like TMAs associated with HSCTs. These issues are discussed in the context of a patient recently evaluated and treated at our institution; the case serves to illustrate the difficulties associated with the diagnosis and treatment of TA-TMA.
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Affiliation(s)
- John Chapin
- Weill Cornell Medical College, New York, New York
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22
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Abstract
A survey of adolescents (N = 1,488) documented third-person perception (TPP) regarding Facebook use and cyber bullying. As Facebook establishes itself as the dominant social network, users expose themselves to a level of bullying not possible in the analog world. The study found that 84% of adolescents (middle school through college undergraduates) use Facebook, and that most users log on daily. While 30% of the sample reported being cyber bullied, only 12.5% quit using the site, and only 18% told a parent or school official. Despite heavy use and exposure, adolescents exhibit TPP, believing others are more likely to be negatively affected by Facebook use. The study contributes to the TPP literature, by linking the perceptual bias to self-protective behaviors. A range of self-protective behaviors from precautionary (deleting or blocking abusive users) to reactionary (quitting Facebook) were related to decreased degrees of TPP. TPP was also related to optimistic bias, experience, liking of and use of Facebook, and perceived subjective norms and age. Implications for prevention education are discussed.
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Chapin J, Carlson K, Christos PJ, DeSancho MT. Risk Factors and Treatment Strategies in Patients With Retinal Vascular Occlusions. Clin Appl Thromb Hemost 2013; 21:672-7. [PMID: 24335246 DOI: 10.1177/1076029613513320] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Retinal vein occlusion (RVO) and retinal artery occlusion (RAO) cause significant visual impairment. The role of thrombophilia and cardiovascular testing is uncertain, and optimal treatment strategies have not been determined. We reviewed medical records of 39 patients with RVO and RAO (23 women and 16 men). Thrombophilia and cardiovascular evaluations were performed and outcomes were reviewed. In all, 24 (61.5%) patients had at least 1 thrombophilia. Elevated factor VIII levels were found in RVO (n = 5) but not in RAO. There are no other significant differences in thrombophilias in RVO compared to those in RAO. Most patients had hypertension(41.2% RAO and 55% RVO) and hyperlipidemia (35.5% RAO and 81.8% RVO). In all, 4 women were using oral contraceptives, 2 were pregnant or postpartum. Follow-up data was available for 28 patients (13 RAO, 15 RVO). Nineteen were treated with aspirin, four with warfarin, and one with low molecular weight heparin. Eight patients reported improvement in vision at time of follow-up (5 RAO, 3 RVO). Multiple risk factors are associated with RVO and RAO, and a complete assessment should include thrombophilia and cardiovascular studies.
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Affiliation(s)
- John Chapin
- Division of Hematology-Medical Oncology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY, USA
| | - Karen Carlson
- Division of Hematology-Medical Oncology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY, USA
| | - Paul J Christos
- Division of Biostatistics and Epidemiology, Weill Cornell Medical College, New York, NY, USA
| | - Maria Teresa DeSancho
- Division of Hematology-Medical Oncology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY, USA
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24
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Affiliation(s)
- J Chapin
- Weill Cornell Medical Center Division of Hematology-Oncology, New York, NY, USA
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25
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Tsai E, Chapin J, Laurence JC, Tsai HM. Use of eculizumab in the treatment of a case of refractory, ADAMTS13-deficient thrombotic thrombocytopenic purpura: additional data and clinical follow-up. Br J Haematol 2013; 162:558-9. [PMID: 23692124 DOI: 10.1111/bjh.12387] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Chapin J, Cardi D, Gibb C, Laurence J. Combined factor V and factor VIII deficiency: a report of a case, genetic analysis, and response to desmopressin acetate. Clin Adv Hematol Oncol 2012; 10:472-474. [PMID: 22895291] [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: 06/01/2023]
Affiliation(s)
- John Chapin
- New York-Presbyterian Hospital, New York, New York 10065, USA.
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Chapin J. Optimistic bias about intimate partner violence among medical personnel. Fam Med 2011; 43:429-432. [PMID: 21656399] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND AND OBJECTIVES The study seeks to contribute to the optimistic bias literature by studying the perceptual bias among medical personnel within the context of intimate partner violence (IPV). METHODS A total of 316 medical students, residents, and nurses were surveyed. RESULTS Care providers exhibit optimistic bias, believing they are less likely than others to become victims of intimate partner violence (IPV). Optimistic bias was related to age, third-person perception, and knowledge/expertise. CONCLUSIONS From a screening standpoint, the finding suggests that care providers distance themselves from patients by believing they are less vulnerable to IPV, which could decrease screening or negatively impact the effectiveness of screening or the quality of patient care. This finding extends the literature, because it documents optimistic bias among medical personnel, whereas previous findings were limited to patients.
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Affiliation(s)
- John Chapin
- Pennsylvania State University, Monaca, PA 15061, USA.
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Rosenfeld J, King RM, Jackson CE, Bedlack RS, Barohn RJ, Dick A, Phillips LH, Chapin J, Gelinas DF, Lou JS. Creatine monohydrate in ALS: effects on strength, fatigue, respiratory status and ALSFRS. ACTA ACUST UNITED AC 2008; 9:266-72. [PMID: 18608103 PMCID: PMC2631354 DOI: 10.1080/17482960802028890] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [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] [Indexed: 12/12/2022]
Abstract
Our objective was to determine the effect of creatine monohydrate on disease progression in patients with amyotrophic lateral sclerosis (ALS). One hundred and seven patients with the diagnosis of probable or definite ALS, of less than five years duration from symptom onset, were randomized to either treatment with daily creatine monohydrate (5 g/d) or placebo. In this multicenter, double-blinded study we followed changes in disease progression: using quantitative measures of strength via maximal isometric voluntary contraction, forced vital capacity, ALSFRS, quality of life, fatigue and survival. Patients were followed for nine months. The results showed that creatine monohydrate did not significantly improve motor, respiratory or functional capacity in this patient population. The drug was well tolerated and the study groups well balanced, especially considering the absence of forced vital capacity criteria for entrance into the study. There was a trend toward improved survival in patients taking daily creatine monohydrate and this was identical to the trend seen in another recently published report of creatine in ALS patients . In conclusion, creatine monohydrate (5 g/d) did not have an obvious benefit on the multiple markers of disease progression measured over nine months. We measured fatigue during isometric contraction and found no significant improvement despite anecdotal patient reports prior to and during the study. The trend toward improved survival was also found in another recently completed blinded trial using creatine monohydrate. Further investigation on the possible survival benefit of creatine in this patient population is ongoing.
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Affiliation(s)
- Jeffrey Rosenfeld
- The Carolinas Neuromuscular/ALS Center, Charlotte North Carolina, Carolinas Medical Center, USA
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31
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Gordon PH, Cheung YK, Levin B, Andrews H, Doorish C, Macarthur RB, Montes J, Bednarz K, Florence J, Rowin J, Boylan K, Mozaffar T, Tandan R, Mitsumoto H, Kelvin EA, Chapin J, Bedlack R, Rivner M, McCluskey LF, Pestronk A, Graves M, Sorenson EJ, Barohn RJ, Belsh JM, Lou JS, Levine T, Saperstein D, Miller RG, Scelsa SN. A novel, efficient, randomized selection trial comparing combinations of drug therapy for ALS. ACTA ACUST UNITED AC 2008; 9:212-22. [PMID: 18608093 DOI: 10.1080/17482960802195632] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Combining agents with different mechanisms of action may be necessary for meaningful results in treating ALS. The combinations of minocycline-creatine and celecoxib-creatine have additive effects in the murine model. New trial designs are needed to efficiently screen the growing number of potential neuroprotective agents. Our objective was to assess two drug combinations in ALS using a novel phase II trial design. We conducted a randomized, double-blind selection trial in sequential pools of 60 patients. Participants received minocycline (100 mg)-creatine (10 g) twice daily or celecoxib (400 mg)-creatine (10 g) twice daily for six months. The primary objective was treatment selection based on which combination best slowed deterioration in the ALS Functional Rating Scale-Revised (ALSFRS-R); the trial could be stopped after one pool if the difference between the two arms was adequately large. At trial conclusion, each arm was compared to a historical control group in a futility analysis. Safety measures were also examined. After the first patient pool, the mean six-month decline in ALSFRS-R was 5.27 (SD=5.54) in the celecoxib-creatine group and 6.47 (SD=9.14) in the minocycline-creatine group. The corresponding decline was 5.82 (SD=6.77) in the historical controls. The difference between the two sample means exceeded the stopping criterion. The null hypothesis of superiority was not rejected in the futility analysis. Skin rash occurred more frequently in the celecoxib-creatine group. In conclusion, the celecoxib-creatine combination was selected as preferable to the minocycline-creatine combination for further evaluation. This phase II design was efficient, leading to treatment selection after just 60 patients, and can be used in other phase II trials to assess different agents.
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Affiliation(s)
- Paul H Gordon
- Department of Neurology, Columbia University, New York, USA.
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Chapin J. Youth perceptions of their school violence risks. Adolescence 2008; 43:461-471. [PMID: 19086664] [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: 05/27/2023]
Abstract
In order to gauge youth perceptions of school violence, this study links two perceptual bias literatures: third-person perception and optimistic bias. The intersection of the two literatures may be especially beneficial in understanding how adolescents process and interpret public health messages and subsequently engage in risk behaviors or self-protective behaviors in health contexts. Participants were 350 urban adolescents in school-based violence prevention sessions who completed a survey. Findings indicate shared predictors of third-person perception and optimistic bias (age, self-esteem) as well as differences (knowledge). The findings also provide insight into understanding how adolescents process and interpret public health messages and subsequently engage in risk behaviors or self-protective behaviors in health contexts.
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Affiliation(s)
- John Chapin
- Penn State University, 100 University Drive, Monaca, PA 15061, USA
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Chapin J, de las Alas S, Coleman G. Optimistic bias among potential perpetrators and victims of youth violence. Adolescence 2005; 40:749-60. [PMID: 16468669] [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: 05/06/2023]
Abstract
This study furthers the current understanding of optimistic bias regarding youth violence among high school students. Results from a survey of 387 urban high school students indicate a wide range of predictors of optimistic bias, including experience, demographics, and attitudes. Linkages to other developmental frameworks (personal fable and self-efficacy) suggest future directions for additional research.
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Affiliation(s)
- John Chapin
- Penn State University, 100 University Drive, Monaco, PA 15061, USA.
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Rumm PD, Daniel V, Marshall S, Anderson T, Chapin J. Addressing rural health from a public health perspective. WMJ 2002; 101:16-9. [PMID: 12239975] [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: 02/26/2023]
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Li W, Maeda Y, Ming X, Cook S, Chapin J, Husar W, Dowling P. Apoptotic death following Fas activation in human oligodendrocyte hybrid cultures. J Neurosci Res 2002; 69:189-96. [PMID: 12111800 DOI: 10.1002/jnr.10285] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to determine how oligodendrocytes die following Fas receptor activation. An immortalized human oligodendrocyte hybrid line (MO3.13) was challenged with Fas ligand (FasL), and cell death was assessed by flow cytometry and DNA gel electrophoresis. Caspase activation was determined by either Western immunoblotting on cell extracts or by whole-cell flow cytometry. FasL challenge clearly induced substantial apoptotic cell death in the oligodendrocyte hybrid cell line, as judged by flow cytometry and by the presence of prominent low molecular weight DNA banding patterns after gel electrophoresis. Western immunoblots showed marked increases in cleaved caspase-1, 8, and 3, indicating that the extrinsic Fas death receptor-induced pathway was activated. The intrinsic mitochondrial pathway was also activated, but only at a minimal level. These findings demonstrate that there are several independent molecular sites within the extrinsic caspase cascade in oligodendrocytes where inhibitory compounds may be capable of blocking cell death in vivo.
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Affiliation(s)
- Weiping Li
- Neurology Service, Department of Veterans Affairs, New Jersey Health Care System, East Orange, New Jersey 07109, USA
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Abstract
In 2000, the Wisconsin Division of Public Health reorganized its allocation of federal and state funds by basing contracts on performance rather than audited costs. This created a quasi market in which the state acted as the buyer and the local health departments as the sellers of public health services. In its first year of operation, the program more effectively defined public health objectives to its funders and constituencies, linked its fiscal accountability more closely to attainment, and documented performance more carefully. In the next two years, the program will focus on improving the quality of objectives and training all parties in negotiation skills. The 2003-6 contract cycle will concentrate on multiyear and multiprogram objectives and a Web-based contract management system. This new contract system will not, however, be established permanently until its long-range impact on funding levels and population health status is known.
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Affiliation(s)
- John Chapin
- Wisconsin Division of Public Health, University of Wisconsin, Milwaukee, USA.
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Maeda Y, Solanky M, Menonna J, Chapin J, Li W, Dowling P. Platelet-derived growth factor-alpha receptor-positive oligodendroglia are frequent in multiple sclerosis lesions. Ann Neurol 2001; 49:776-85. [PMID: 11409430 DOI: 10.1002/ana.1015] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.1] [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: 11/05/2022]
Abstract
Platelet-derived growth factor (PDGF) ligand is a potent glial cell mitogen. When its cognate receptor (PDGF-alphaR) is expressed on oligodendroglial lineage cells, such cells are considered capable of division, and the receptor thus serves as a phenotypic marker for oligodendrocyte precursor cells. Here we identify using immunohistochemistry a considerably enlarged, PDGF-alphaR-expressing oligodendrocyte cell population within multiple sclerosis (MS) white matter lesions compared to control brains. Numerous PDGF-alphaR-positive oligodendroglia also colabel heavily with the nuclear cell proliferation marker antibody Ki-67. Our finding of large numbers of proliferating oligodendroglia in MS brains expressing up-regulated PDGF-alphaR suggests that these progenitor-like cells represent an important source of regenerating cells for the healing MS lesion.
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Affiliation(s)
- Y Maeda
- Department of Veterans Affairs, New Jersey Health Care System, East Orange 07019, USA
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Chapin J. Strong SMS/DPH partnership needed. WMJ 2000; 99:7. [PMID: 11220200] [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: 02/19/2023]
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Chapin J. How to measure the success of public health. WMJ 2000; 99:9. [PMID: 11149264] [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: 02/18/2023]
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Chapin J. What is healthy about the "Healthy People 2000" document? WMJ 2000; 99:11. [PMID: 11043062] [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: 02/18/2023]
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Chapin J. Public health funding in Wisconsin. WMJ 2000; 99:11. [PMID: 10927974] [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: 02/17/2023]
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Abstract
OBJECTIVE To ascertain the current knowledge base and screening practices of obstetrician-gynecologists in the area of domestic violence. METHODS We mailed a survey to 189 ACOG Fellows who are members of the Collaborative Ambulatory Research Network. Questionnaires were also mailed to a random sample of 1250 nonmember Fellows. RESULTS Obstetrician-gynecologists are aware of the nature of domestic violence and are familiar with common symptomatology that may be associated with domestic violence. For pregnant patients, 39% of respondents routinely screen at the first prenatal visit; 27% of respondents routinely screen nonpregnant patients at the initial visit. Screening is most likely to occur when the obstetrician-gynecologist suspects a patient is being abused, both during pregnancy (68%) and when the patient is not pregnant (72%). Only 30% of obstetrician-gynecologists received training on domestic violence during medical school; 37% received such instruction during residency training. The majority (67%) have received continuing education on the subject. Years since training and personal experiences with intimate-partner violence were associated with increased screening practices. CONCLUSION Routine screening of all women for domestic violence has been recommended by ACOG for more than a decade. The majority of obstetrician-gynecologists screen both pregnant and nonpregnant patients when they suspect abuse. However, with universal screening, more female victims of violence can be identified and can receive needed services.
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Affiliation(s)
- D L Horan
- Department of Research, American College of Obstetricians and Gynecologists, Washington, DC 20024, USA.
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Affiliation(s)
- R A Chez
- University of South Florida in Tampa, USA
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Gibbs CE, Chapin J. The search for access and quality at an acceptable price: a view of health care reform. Womens Health Issues 1993; 3:206-15. [PMID: 8111238 DOI: 10.1016/s1049-3867(05)80066-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Buszta C, Steward P, Chapin J. Developing core competencies for medical/surgical nursing. J Nurs Staff Dev 1993; 9:236-9. [PMID: 7693899] [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: 01/26/2023]
Abstract
The development of competency-based education is a task requiring the skills of educators and expert clinicians. This article provides information on a competency-based core orientation for medical/surgical nursing.
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Abstract
Several sympathomimetic agents have been associated with ischemic and hemorrhagic stroke. Ephedrine, a sympathomimetic drug that has a high potential for abuse and can be readily obtained without a prescription in unrestricted quantities, has rarely been associated with stroke. We report ephedrine-related stroke in three patients. One patient developed a thalamic infarct after ingesting known quantities of ephedrine as street-purchased "speed" for weight loss. Two patients had fatal intracranial hemorrhages after ingesting unknown quantities of ephedrine; one of them had a history of drug abuse, and one lacked a history of ephedrine use or drug abuse. Ephedrine appears to predispose to both ischemic and hemorrhagic stroke. The mechanisms responsible for the different cerebrovascular complications remain to be proven. Restriction of ephedrine availability should be considered.
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Affiliation(s)
- A Bruno
- Neurology Service, Veterans Affairs Medical Center, University of New Mexico School of Medicine, Albuquerque
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Davidson EC, Gibbs CE, Chapin J. The challenge of care for the poor and underserved in the United States. An American College of Obstetricians and Gynecologists perspective on access to care for underserved women. Am J Dis Child 1991; 145:546-9. [PMID: 2042620 DOI: 10.1001/archpedi.1991.02160050072020] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Access to pregnancy-related care for women and their infants and to reproductive health services for adolescents are significant concerns to the American College of Obstetricians and Gynecologists (ACOG). Adolescent and young adult women are among those most likely to be uninsured and lack access to health care services. Adolescent pregnancy, low-birth weight, and infant mortality remain major national burdens. The ACOG has taken the position that quality health care should be accessible to all women. The ACOG recommendations regarding health services for adolescents and the ACOG Committee on Health Care for Underserved Women's statement of principles regarding universal access for pregnancy-related care, which includes the basic scope of benefits, the characteristics of the providers, and the organization of services are described.
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Affiliation(s)
- E C Davidson
- American College of Obstetricians and Gynecologists, Washington, DC 20024-2188
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Smith SS, Sadeq M, Chapin J, Woodward DJ. A novel paradigm for studying systemic hormonal effects on a locomotor-correlated cerebellar discharge pattern. J Neurosci Methods 1986. [DOI: 10.1016/0165-0270(86)90104-4] [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: 10/27/2022]
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