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Affiliation(s)
- E.N. DeFiore
- Associated Services for the Blind, 919 Walnut Street, Philadelphia, PA 19107
| | - R. Silver
- Associated Services for the Blind, 919 Walnut Street, Philadelphia, PA 19107
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Khanna D, Pope J, Matucci-Cerinic M, Kuwana M, Denton C, Allanore Y, Wosnitza M, Truchetet ME, Szücs G, Stevens W, Steen V, Stagnaro C, Smith V, Silver R, Schiopu E, Riccieri V, Kramer F, Johnson S, Ishikawa O, Ishii T, Hachlla E, De Langhe E, Czirják L, Bečvář R, Atsumi T, Distler O. OP0249 LONG-TERM EXTENSION RESULTS OF RISE-SSC, A RANDOMIZED TRIAL OF RIOCIGUAT IN PATIENTS WITH EARLY DIFFUSE CUTANEOUS SYSTEMIC SCLEROSIS (DCSSC). Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:RISE-SSc (NCT02283762) was a multicenter Phase IIb trial of riociguat in pts with early (duration ≤18 months) dcSSc and modified Rodnan skin score (mRSS) 10−22 units. Pts were randomized double-blind to placebo or riociguat 0.5–2.5 mg t.i.d. for 52 weeks. The primary endpoint, mRSS change from baseline to Week (Wk) 52, did not reach statistical significance (p=0.08, riociguat vs placebo), but there were favorable trends in some other outcomes.Objectives:To present open-label long-term extension (LTE) results of RISE-SSc.Methods:Pts who completed Wk 52 of double-blind therapy could enter LTE on riociguat. Endpoints included mRSS, adverse events (AEs), and serious AEs (SAEs).Results:Of 60 pts randomized to riociguat and 61 to placebo, 42 (riociguat−riociguat group) and 45 (former placebo group), respectively, entered LTE. At LTE start, mean±SD mRSS was 16.4±3.2 and 16.3±4.2 units, and mean disease duration was 8.9±7.8 and 8.9±5.8 months, in the riociguat−riociguat and former placebo groups, respectively. Other demographics/disease characteristics were also comparable. Median duration of riociguat treatment was 1092 d in riociguat−riociguat pts and 649 d in former placebo pts. Throughout the study, mRSS decreased in both groups (Figure 1). From Wk 52 to last visit, mRSS fell by −3.02±5.51 in riociguat−riociguat patients and −3.96±5.43 in former placebo pts. Rates of mRSS regression (decrease by >5 units and ≥25% from Wk 52 to last visit) and of % declines in mRSS were similar in the two groups (Figure 2). mRSS progression (increase by >5 units and ≥25% from Wk 52 to last visit) occurred in 1 pt (2%) in each group. During the entire study, rescue therapy agents were used in 15 (36%) riociguat−riociguat pts and 17 (38%) former placebo pts. AEs were reported from Wk 52 to last visit in 82 pts (94%): 40 (95%) riociguat−riociguat and 42 (93%) former placebo. Most common AEs overall: nasopharyngitis (24%), gastroesophageal reflux disease (17%), diarrhea (15%), and hypotension (14%). AEs of special interest (dizziness, postural dizziness, or hypotension) occurred in 5 riociguat−riociguat pts (12%) and 4 former placebo pts (9%). SAEs were reported in 21 (24%) pts: 10 (24%) riociguat−riociguat pts and 11 (24%) former placebo pts, with no SAE reported in >1 patient, no SAEs of special interest, and no deaths.Conclusion:During LTE riociguat treatment, mRSS decreased in both groups from Wk 52 onwards and mRSS progression was uncommon. Riociguat had acceptable safety, similar to the main study, with no new safety signal.Acknowledgments:RISE-SSc was jointly funded by Bayer AG and Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA.Disclosure of Interests:Dinesh Khanna Shareholder of: Eicos, Grant/research support from: NIH NIAID, NIH NIAMS, Consultant of: Acceleron, Actelion, Bayer, BMS, Boehringer-Ingelheim, Corbus, Galapagos, Genentech/Roche, GSK, Mitsubishi Tanabi, Sanofi-Aventis/Genzyme, UCB Pharma, Janet Pope Grant/research support from: AbbVie, Bristol-Myers Squibb, Eli Lilly & Company, Merck, Roche, Seattle Genetics, UCB, Consultant of: AbbVie, Actelion, Amgen, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Eicos Sciences, Eli Lilly & Company, Emerald, Gilead Sciences, Inc., Janssen, Merck, Novartis, Pfizer, Roche, Sandoz, Sanofi, UCB, Speakers bureau: UCB, Marco Matucci-Cerinic Grant/research support from: Actelion, MSD, Bristol-Myers Squibb, Speakers bureau: Acetelion, Lilly, Boehringer Ingelheim, Masataka Kuwana Grant/research support from: Acetelion, Consultant of: Acetelion, Bayer, Chugai, Corbus Pharmaceuticals, CSL Behring and Reata Pharmaceuticals. He was a member of the SENSCIS trial Steering Committee (Boehringer Ingelheim), Christopher Denton Grant/research support from: GlaxoSmithKline, CSL Behring, and Inventiva, Consultant of: Medscape, Roche-Genentech, Actelion, GlaxoSmithKline, Sanofi Aventis, Inventiva, CSL Behring, Boehringer Ingelheim, Corbus Pharmaceuticals, Acceleron, Curzion and Bayer, Yannick Allanore Grant/research support from: BMS, Inventiva, Roche, Sanofi, Consultant of: Actelion, Bayer AG, BMS, BI, Melanie Wosnitza Employee of: Bayer AG, Marie-Elise Truchetet: None declared, Gabriella Szücs: None declared, Wendy Stevens: None declared, Viginia Steen Grant/research support from: The associated affiliation has received grants/research from Boehringer Ingelheim, Corbus Pharmaceuticals, CSL Behring, Eicos, Galapagos, Immune Tolerance Network, Reata, Consultant of: Virginia Steen has acted as a consultant for Boehringer Ingelheim, Corbus, CSL Behring, Eicos, Forbius, Chiara Stagnaro: None declared, Vanessa Smith Grant/research support from: The affiliated company received grants from Research Foundation - Flanders (FWO), Belgian Fund for Scientific Research in Rheumatic diseases (FWRO), Boehringer Ingelheim Pharma GmbH & Co and Janssen-Cilag NV, Consultant of: Boehringer-Ingelheim Pharma GmbH & Co, Speakers bureau: Actelion Pharmaceuticals Ltd, Boehringer-Ingelheim Pharma GmbH & Co and UCB Biopharma Sprl, Richard Silver: None declared, Elena Schiopu: None declared, Valeria Riccieri: None declared, Frank Kramer Employee of: Bayer AG, Sindhu Johnson Grant/research support from: Boehringer Ingelheim, Corbus Pharmaceuticals, GlaxoSmithKline, Roche, Merck, Bayer, Consultant of: Boehringer Ingelheim, Ikaria, Osamu Ishikawa: None declared, Tomonori Ishii: None declared, Eric Hachlla: None declared, Ellen De Langhe Consultant of: member of advisory board for Boehringer, László Czirják Consultant of: Actelion, BI, Roche-Genentech, Lilly, Medac, Novartis, Pfizer, Bayer AG, Radim Bečvář Consultant of: Actelion, Roche, Tatsuya Atsumi Grant/research support from: Eli Lily Japan K.K., Alexion Pharmaceuticals, Inc., Bristol-Myers Squibb Co., AbbVie Inc., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Astellas Pharma Inc., Consultant of: Gilead Sciences, Inc., Eli Lilly Japan K.K., UCB Japan Co. Ltd., AbbVie Inc., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Speakers bureau: Eli Lilly Japan K.K., UCB Japan Co. Ltd., Bristol-Myers Squibb Co., AbbVie Inc., Eisai Co. Ltd., Otsuka Pharmaceutical Co., Ltd., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Takeda Pharmaceutical Co., Ltd., Astellas Pharma Inc., Oliver Distler Grant/research support from: Grants/Research support from Actelion, Bayer, Boehringer Ingelheim, Competitive Drug Development International Ltd. and Mitsubishi Tanabe; he also holds the issued Patent on mir-29 for the treatment of systemic sclerosis (US8247389, EP2331143)., Consultant of: Consultancy fees from Actelion, Acceleron Pharma, AnaMar, Bayer, Baecon Discovery, Blade Therapeutics, Boehringer, CSL Behring, Catenion, ChemomAb, Curzion Pharmaceuticals, Ergonex, Galapagos NV, GSK, Glenmark Pharmaceuticals, Inventiva, Italfarmaco, iQvia, medac, Medscape, Mitsubishi Tanabe Pharma, MSD, Roche, Sanofi and UCB, Speakers bureau: Speaker fees from Actelion, Bayer, Boehringer Ingelheim, Medscape, Pfizer and Roche
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Distler O, Kramer F, Höfler J, Ghadessi M, Sandner P, Allanore Y, Denton C, Kuwana M, Matucci-Cerinic M, Pope J, Atsumi T, Bečvář R, Czirják L, De Langhe E, Hachlla E, Ishii T, Ishikawa O, Johnson S, Laapas K, Riccieri V, Schiopu E, Silver R, Smith V, Stagnaro C, Steen V, Stevens W, Szücs G, Truchetet ME, Wosnitza M, Khanna D. FRI0575 BIOMARKER ANALYSIS FROM THE RISE-SSC STUDY OF RIOCIGUAT IN EARLY DIFFUSE CUTANEOUS SYSTEMIC SCLEROSIS (DCSSC). Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:RISE-SSc (NCT02283762) was a multicenter, double-blind, Phase IIb study of riociguat in early dcSSc. Primary endpoint was change in mRSS from baseline to Wk 52.Objectives:Exploratory, descriptive analyses of riociguat target engagement and effects on disease biomarkers in RISE-SSc and their relationship with effects on the primary endpoint. All biomarker p-values are for information only.Methods:Pts with dcSSc (duration ≤18 mo; modified Rodnan skin score [mRSS] 10–22 units) were randomized to riociguat 0.5−2.5 mg tid (n=60) or placebo (n=61). Biomarkers of target engagement (cGMP), inflammation and/or vascular/endothelial function (e.g. high-sensitivity C-reactive protein [hsCRP], soluble platelet endothelial cell adhesion molecule 1 [sPECAM-1], soluble E-selectin, chemokine ligand 4 [CXCL-4]), and fibrosis (e.g. alpha-smooth muscle cell actin [alphaSMA], pro-collagen mRNA expression) were measured in plasma, serum, and skin biopsies at baseline and Wk 14.Results:Mean±SD change from baseline in mRSS was –2.09±5.66 (n=57) with riociguat and –0.77±8.24 (n=52) with placebo (p=0.08). From baseline to Wk 14, plasma cGMP rose by mean (SD) 94% (78%) (n=52) with riociguat and 10% (39%) (n=52) with placebo (nominal p<0.001). Serum sPECAM-1 and CXCL-4 fell with riociguat vs placebo; changes in hsCRP or E-selectin differed little between groups (Fig 1). Pts with higher baseline sPECAM-1 showed larger mRSS reductions with riociguat vs placebo than pts with lower levels (nominal interaction p=0.004). In baseline skin biopsies, 34% and 31% of pts in the riociguat and placebo groups, respectively, had no alphaSMA-positive cells; other pts had +ve cells (alphaSMA counts 0.1–99.5, median 2.5), a potential indicator of higher disease activity. Pts with +ve baseline alphaSMA counts showed a reduction of mRSS with riociguat vs placebo (Fig 2). Skin collagen mRNA expression biomarkers in skin biopsies showed no differences between groups.Conclusion:Primary study endpoint (change in mRSS) was not met. Plasma cGMP rose with riociguat, confirming engagement with the NO-sGC-cGMP pathway. Serum sPECAM-1 (marker of endothelial activation) and CXCL-4 (marker of progressive SSc) fell with riociguat; hsCRP and E-selectin did not. Some serum and skin biomarkers of higher disease activity at baseline were associated with a greater effect of riociguat on skin fibrosis.Acknowledgments:RISE-SSc was jointly funded by Bayer AG and Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA.Disclosure of Interests:Oliver Distler Grant/research support from: Grants/Research support from Actelion, Bayer, Boehringer Ingelheim, Competitive Drug Development International Ltd. and Mitsubishi Tanabe; he also holds the issued Patent on mir-29 for the treatment of systemic sclerosis (US8247389, EP2331143)., Consultant of: Consultancy fees from Actelion, Acceleron Pharma, AnaMar, Bayer, Baecon Discovery, Blade Therapeutics, Boehringer, CSL Behring, Catenion, ChemomAb, Curzion Pharmaceuticals, Ergonex, Galapagos NV, GSK, Glenmark Pharmaceuticals, Inventiva, Italfarmaco, iQvia, medac, Medscape, Mitsubishi Tanabe Pharma, MSD, Roche, Sanofi and UCB, Speakers bureau: Speaker fees from Actelion, Bayer, Boehringer Ingelheim, Medscape, Pfizer and Roche, Frank Kramer Employee of: Bayer AG, Josef Höfler Employee of: Josef Höfler is an employee of Staburo GmbH, Munich, Germany, contracted by Bayer AG to perform the biomarker analyses, Mercedeh Ghadessi Employee of: Bayer AG, Peter Sandner Employee of: Bayer AG, Yannick Allanore Grant/research support from: BMS, Inventiva, Roche, Sanofi, Consultant of: Actelion, Bayer AG, BMS, BI, Christopher Denton Grant/research support from: GlaxoSmithKline, CSL Behring, and Inventiva, Consultant of: Medscape, Roche-Genentech, Actelion, GlaxoSmithKline, Sanofi Aventis, Inventiva, CSL Behring, Boehringer Ingelheim, Corbus Pharmaceuticals, Acceleron, Curzion and Bayer, Masataka Kuwana Grant/research support from: Acetelion, Consultant of: Acetelion, Bayer, Chugai, Corbus Pharmaceuticals, CSL Behring and Reata Pharmaceuticals. He was a member of the SENSCIS trial Steering Committee (Boehringer Ingelheim), Marco Matucci-Cerinic Grant/research support from: Actelion, MSD, Bristol-Myers Squibb, Speakers bureau: Acetelion, Lilly, Boehringer Ingelheim, Janet Pope Grant/research support from: AbbVie, Bristol-Myers Squibb, Eli Lilly & Company, Merck, Roche, Seattle Genetics, UCB, Consultant of: AbbVie, Actelion, Amgen, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Eicos Sciences, Eli Lilly & Company, Emerald, Gilead Sciences, Inc., Janssen, Merck, Novartis, Pfizer, Roche, Sandoz, Sanofi, UCB, Speakers bureau: UCB, Tatsuya Atsumi Grant/research support from: Eli Lily Japan K.K., Alexion Pharmaceuticals, Inc., Bristol-Myers Squibb Co., AbbVie Inc., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Astellas Pharma Inc., Consultant of: Gilead Sciences, Inc., Eli Lilly Japan K.K., UCB Japan Co. Ltd., AbbVie Inc., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Speakers bureau: Eli Lilly Japan K.K., UCB Japan Co. Ltd., Bristol-Myers Squibb Co., AbbVie Inc., Eisai Co. Ltd., Otsuka Pharmaceutical Co., Ltd., Daiichi Sankyo Co., Ltd., Pfizer Inc., Chugai Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Takeda Pharmaceutical Co., Ltd., Astellas Pharma Inc., Radim Bečvář Consultant of: Actelion, Roche, László Czirják Consultant of: Actelion, BI, Roche-Genentech, Lilly, Medac, Novartis, Pfizer, Bayer AG, Ellen De Langhe Consultant of: member of advisory board for Boehringer, Eric Hachlla: None declared, Tomonori Ishii: None declared, Osamu Ishikawa: None declared, Sindhu Johnson Grant/research support from: Boehringer Ingelheim, Corbus Pharmaceuticals, GlaxoSmithKline, Roche, Merck, Bayer, Consultant of: Boehringer Ingelheim, Ikaria, Kaisa Laapas Employee of: Partly in-sourced to Bayer, Valeria Riccieri: None declared, Elena Schiopu: None declared, Richard Silver: None declared, Vanessa Smith Grant/research support from: The affiliated company received grants from Research Foundation - Flanders (FWO), Belgian Fund for Scientific Research in Rheumatic diseases (FWRO), Boehringer Ingelheim Pharma GmbH & Co and Janssen-Cilag NV, Consultant of: Boehringer-Ingelheim Pharma GmbH & Co, Speakers bureau: Actelion Pharmaceuticals Ltd, Boehringer-Ingelheim Pharma GmbH & Co and UCB Biopharma Sprl, Chiara Stagnaro: None declared, Viginia Steen Grant/research support from: The associated affiliation has received grants/research from Boehringer Ingelheim, Corbus Pharmaceuticals, CSL Behring, Eicos, Galapagos, Immune Tolerance Network, Reata, Consultant of: Virginia Steen has acted as a consultant for Boehringer Ingelheim, Corbus, CSL Behring, Eicos, Forbius, Wendy Stevens: None declared, Gabriella Szücs: None declared, Marie-Elise Truchetet: None declared, Melanie Wosnitza Employee of: Bayer AG, Dinesh Khanna Shareholder of: Eicos Sciences, Inc./Civi Biopharma, Inc., Grant/research support from: Dr Khanna was supported by NIH/NIAMS K24AR063120, Consultant of: Acceleron, Actelion, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Corbus Pharmaceuticals, Horizon Therapeutic, Galapagos, Roche/Genentech, GlaxoSmithKline, Mitsubishi Tanabe, Sanofi-Aventis/Genzyme, UCB
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Hoffman MK, Goudar SS, Kodkany BS, Metgud M, Somannavar M, Okitawutshu J, Lokangaka A, Tshefu A, Bose CL, Mwapule A, Mwenechanya M, Chomba E, Carlo WA, Chicuy J, Figueroa L, Garces A, Krebs NF, Jessani S, Zehra F, Saleem S, Goldenberg RL, Kurhe K, Das P, Patel A, Hibberd PL, Achieng E, Nyongesa P, Esamai F, Liechty EA, Goco N, Hemingway-Foday J, Moore J, Nolen TL, McClure EM, Koso-Thomas M, Miodovnik M, Silver R, Derman RJ. Low-dose aspirin for the prevention of preterm delivery in nulliparous women with a singleton pregnancy (ASPIRIN): a randomised, double-blind, placebo-controlled trial. Lancet 2020; 395:285-293. [PMID: 31982074 PMCID: PMC7168353 DOI: 10.1016/s0140-6736(19)32973-3] [Citation(s) in RCA: 183] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Preterm birth remains a common cause of neonatal mortality, with a disproportionately high burden in low-income and middle-income countries. Meta-analyses of low-dose aspirin to prevent pre-eclampsia suggest that the incidence of preterm birth might also be decreased, particularly if initiated before 16 weeks of gestation. METHODS ASPIRIN was a randomised, multicountry, double-masked, placebo-controlled trial of low-dose aspirin (81 mg daily) initiated between 6 weeks and 0 days of pregnancy, and 13 weeks and 6 days of pregnancy, in nulliparous women with an ultrasound confirming gestational age and a singleton viable pregnancy. Participants were enrolled at seven community sites in six countries (two sites in India and one site each in the Democratic Republic of the Congo, Guatemala, Kenya, Pakistan, and Zambia). Participants were randomly assigned (1:1, stratified by site) to receive aspirin or placebo tablets of identical appearance, via a sequence generated centrally by the data coordinating centre at Research Triangle Institute International (Research Triangle Park, NC, USA). Treatment was masked to research staff, health providers, and patients, and continued until 36 weeks and 7 days of gestation or delivery. The primary outcome of incidence of preterm birth, defined as the number of deliveries before 37 weeks' gestational age, was analysed in randomly assigned women with pregnancy outcomes at or after 20 weeks, according to a modified intention-to-treat (mITT) protocol. Analyses of our binary primary outcome involved a Cochran-Mantel-Haenszel test stratified by site, and generalised linear models to obtain relative risk (RR) estimates and associated confidence intervals. Serious adverse events were assessed in all women who received at least one dose of drug or placebo. This study is registered with ClinicalTrials.gov, NCT02409680, and the Clinical Trial Registry-India, CTRI/2016/05/006970. FINDINGS From March 23, 2016 to June 30, 2018, 14 361 women were screened for inclusion and 11 976 women aged 14-40 years were randomly assigned to receive low-dose aspirin (5990 women) or placebo (5986 women). 5780 women in the aspirin group and 5764 in the placebo group were evaluable for the primary outcome. Preterm birth before 37 weeks occurred in 668 (11·6%) of the women who took aspirin and 754 (13·1%) of those who took placebo (RR 0·89 [95% CI 0·81 to 0·98], p=0·012). In women taking aspirin, we also observed significant reductions in perinatal mortality (0·86 [0·73-1·00], p=0·048), fetal loss (infant death after 16 weeks' gestation and before 7 days post partum; 0·86 [0·74-1·00], p=0·039), early preterm delivery (<34 weeks; 0·75 [0·61-0·93], p=0·039), and the incidence of women who delivered before 34 weeks with hypertensive disorders of pregnancy (0·38 [0·17-0·85], p=0·015). Other adverse maternal and neonatal events were similar between the two groups. INTERPRETATION In populations of nulliparous women with singleton pregnancies from low-income and middle-income countries, low-dose aspirin initiated between 6 weeks and 0 days of gestation and 13 weeks and 6 days of gestation resulted in a reduced incidence of preterm delivery before 37 weeks, and reduced perinatal mortality. FUNDING Eunice Kennedy Shriver National Institute of Child Health and Human Development.
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Affiliation(s)
- Matthew K Hoffman
- Department of Obstetrics and Gynecology, Christiana Care, Newark, DE, USA.
| | | | | | | | | | - Jean Okitawutshu
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of the Congo
| | - Adrien Lokangaka
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of the Congo
| | - Antoinette Tshefu
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of the Congo
| | - Carl L Bose
- University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | | | | | | | - Javier Chicuy
- Instituto de Nutrición de Centro América y Panamá, Guatemala City, Guatemala
| | - Lester Figueroa
- Instituto de Nutrición de Centro América y Panamá, Guatemala City, Guatemala
| | - Ana Garces
- Instituto de Nutrición de Centro América y Panamá, Guatemala City, Guatemala
| | | | | | | | | | | | - Kunal Kurhe
- Lata Medical Research Foundation, Nagpur, India
| | - Prabir Das
- Lata Medical Research Foundation, Nagpur, India
| | | | | | - Emmah Achieng
- Department of Child Health and Paediatrics, Moi University School of Medicine, Eldoret, Kenya
| | - Paul Nyongesa
- Department of Child Health and Paediatrics, Moi University School of Medicine, Eldoret, Kenya
| | - Fabian Esamai
- Department of Child Health and Paediatrics, Moi University School of Medicine, Eldoret, Kenya
| | | | - Norman Goco
- RTI International, Research Triangle Park, NC, USA
| | | | - Janet Moore
- RTI International, Research Triangle Park, NC, USA
| | | | | | - Marion Koso-Thomas
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Menachem Miodovnik
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - R Silver
- University of Utah, Salt Lake City, UT, USA
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Jauniaux E, Alfirevic Z, Bhide AG, Belfort MA, Burton GJ, Collins SL, Dornan S, Jurkovic D, Kayem G, Kingdom J, Silver R, Sentilhes L. Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green-top Guideline No. 27a. BJOG 2018; 126:e1-e48. [PMID: 30260097 DOI: 10.1111/1471-0528.15306] [Citation(s) in RCA: 218] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Aly J, Kim K, Hill M, DeCherney A, Perkins N, Silver R, Sjaarda L, Schisterman E, Mumford S. Fatty acids and micronutrients are not associated with AMH levels in women with proven fecundity. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.284] [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: 10/28/2022]
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Eubanks A, Nobles C, Mumford S, Hill M, DeCherney A, Sjaarda L, Perkins N, Silver R, Schisterman E. The impact of low dose aspirin on the mode of delivery: secondary analysis of the effect of aspirin in gestation and reproduction (eager) trial. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.238] [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: 10/28/2022]
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Bishop L, Kim K, Mumford S, Sjaarda L, Perkins N, Silver R, Schisterman E, DeCherney A, Hill M. Family history of gynecological disorders, time to pregnancy and pregnancy outcomes. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.435] [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: 10/28/2022]
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Sjaarda L, Mumford S, Connell M, Kim K, Hill M, Perkins N, Silver R, Schisterman E. Increased androgen, anti-mullerian hormone and neonatal outcomes in fertile women without PCOS. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pilgrim J, Kim K, Hill M, Mumford S, Sjaarda L, Perkins N, DeCherney A, Silver R, Schisterman E. Work related exposures: impacts on hormone levels, anovulation and the menstrual cycle. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Eubanks A, Mumford S, Hill M, DeCherney A, Kim K, Sjaarda L, Perkins N, Silver R, Schisterman E. Intergenerational effects of maternal lifestyle behaviors on the AMH of adult female offspring. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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Evans M, Nobles C, Kim K, Hill M, DeCherney A, Silver R, Mumford S, Perkins N, Schisterman E. Low dose aspirin and menstrual cycle characteristics. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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Carpinello O, Nobles C, Guan W, Mumford S, Tsai M, Sjaarda L, Hill M, DeCherney A, Silver R, Schisterman E, Yeung E. Differences in cord blood DNA methylation in women with preeclampsia versus normotensive women. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.434] [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: 10/28/2022]
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15
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Aly J, DeVilbiss E, Mumford S, Sjaarda L, Perkins N, Silver R, Hill M, DeCherney A, Schisterman E. Leptin is associated with decreases in AMH in women with proven fecundity. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Jendle J, Birkenfeld A, Silver R, Uusinarkaus K, Højbjerre L, Thomsen HF, Davies M. Auswirkung von unerwünschten gastrointestinalen Ereignissen auf die Therapiezufriedenheit in der Behandlung des Typ 2 Diabetes mit Semaglutid. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641903] [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: 10/28/2022]
Affiliation(s)
- J Jendle
- Örebro University, Örebro, Sweden
| | - A Birkenfeld
- Technische Universität Dresden, Dresden, Germany
| | - R Silver
- Southern New Hampshire Diabetes and Endocrinology, Nashua, United States
| | - K Uusinarkaus
- CSHP/DaVita Clinical Research, Colorado Springs, United States
| | | | | | - M Davies
- Diabetes Research Centre University of Leicester, Leicester, United Kingdom
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17
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Affiliation(s)
- LJ Wimmer
- Star Legacy Foundation; Eden Prairie MN USA
| | - C Storey
- International Stillbirth Alliance; Bristol UK
| | - R Silver
- Department of Obstetrics and Gynecology; University of Utah; Salt Lake City UT USA
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18
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Ramirez E, Churchill S, Silver R, Ehrenburg M, Yodfat E. Laparoscopic Uterine Retrieval with Preservation of Uterine and Ovarian Vascular Pedicles: Promising Application for Human Uterine Transplants. J Minim Invasive Gynecol 2017. [DOI: 10.1016/j.jmig.2017.08.570] [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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19
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Johnson SR, Soowamber ML, Fransen J, Khanna D, Van Den Hoogen F, Baron M, Matucci-Cerinic M, Denton CP, Medsger TA, Carreira PE, Riemekasten G, Distler J, Gabrielli A, Steen V, Chung L, Silver R, Varga J, Müller-Ladner U, Vonk MC, Walker UA, Wollheim FA, Herrick A, Furst DE, Czirjak L, Kowal-Bielecka O, Del Galdo F, Cutolo M, Hunzelmann N, Murray CD, Foeldvari I, Mouthon L, Damjanov N, Kahaleh B, Frech T, Assassi S, Saketkoo LA, Pope JE. There is a need for new systemic sclerosis subset criteria. A content analytic approach. Scand J Rheumatol 2017; 47:62-70. [DOI: 10.1080/03009742.2017.1299793] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- SR Johnson
- Toronto Scleroderma Program, Division of Rheumatology, Department of Medicine, Toronto Western Hospital, Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - ML Soowamber
- Toronto Scleroderma Program, Division of Rheumatology, Department of Medicine, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | - J Fransen
- The Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - D Khanna
- Division of Rheumatology, University of Michigan Scleroderma Program, Ann Arbor, MI, USA
| | - F Van Den Hoogen
- The Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - M Baron
- Division of Rheumatology, Department of Medicine, Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - M Matucci-Cerinic
- Department of Rheumatology AVC, Department of BioMedicine, Division of Rheumatology AOUC, Department of Medicine and Denothe Centre, University of Florence, Florence, Italy
| | - CP Denton
- Centre for Rheumatology and Connective Tissue Diseases, Royal Free Hospital, London, UK
| | - TA Medsger
- Department of Medicine, Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - PE Carreira
- Department of Rheumatology, University Hospital 12 de Octubre, Madrid, Spain
| | - G Riemekasten
- Department of Rheumatology, University of Lübeck, Lung Research Center Borstel, a Leibniz institute, Lübeck, Germany
| | - J Distler
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - A Gabrielli
- Department of Molecular and Clinical Sciences, Clinical Medicine, University of Marche, Ancona, Italy
| | - V Steen
- Department of Medicine, Division of Rheumatology, Clinical Immunology and Allergy, Georgetown University School of Medicine, Washington, DC, USA
| | - L Chung
- Department of Medicine and Dermatology, Division of Immunology and Rheumatology, Stanford University, Stanford, CA, USA
| | - R Silver
- Department of Medicine, Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston, SC, USA
| | - J Varga
- Department of Medicine, Division of Rheumatology, Clinical Immunology and Allergy, Northwestern University, Chicago, IL, USA
| | - U Müller-Ladner
- Department of Rheumatology and Clinical Immunology, Justus-Liebig University Giessen, Kerckhoff Clinic, Bad Nauheim, Germany
| | - MC Vonk
- Department of Rheumatic Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - UA Walker
- Department of Rheumatology, University of Basel, Basel, Switzerland
| | - FA Wollheim
- Department of Rheumatology, Lund University Hospital, Lund, Sweden
| | - A Herrick
- Centre for Musculoskeletal Research, Institute of Inflammation and Repair, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - DE Furst
- Division of Rheumatology, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - L Czirjak
- Department of Rheumatology and Immunology, University of Pécs, Clinical Center, Pécs, Hungary
| | - O Kowal-Bielecka
- Department of Rheumatology and Internal Medicine, Medical University of Bialystok, Białystok, Poland
| | - F Del Galdo
- Scleroderma Programme, Leeds Institute of Rheumatic and Musculoskeletal Medicine, LMBRU, University of Leeds, Leeds, UK
| | - M Cutolo
- Research Laboratory and Academic Division of Clinical Rheumatology, University of Genova, IRCCS AOU S Martino, Genova, Italy
| | - N Hunzelmann
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - CD Murray
- Inflammatory Bowel Disease Unit, Royal Free London NHS Foundation Trust, London, UK
| | - I Foeldvari
- Hamburg Center for Paediatric Rheumatology, Eilbek Clinic, Hamburg, Germany
| | - L Mouthon
- Department of Internal Medicine, Paris Descartes University, the Public Hospitals of Paris, Paris, France
| | - N Damjanov
- Institute of Rheumatology, University of Belgrade School of Medicine, Belgrade, Serbia
| | - B Kahaleh
- Division of Rheumatology, Department of Internal Medicine, University of Toledo Medical Center, Toledo, OH, USA
| | - T Frech
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - S Assassi
- University of Texas Health Science Center at Houston, Houston, TX, USA
| | - LA Saketkoo
- New Orleans Scleroderma and Sarcoidosis Patient Care and Research Center, Tulane University Lung Center, New Orleans, LA, USA
| | - JE Pope
- Division of Rheumatology, Department of Medicine, St Joseph Health Care, University of Western Ontario, London, ON, Canada
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20
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Lehman MN, LeSauter J, Kim C, Berriman SJ, Tresco PA, Silver R. How do Fetal Grafts of the Suprachiasmatic Nucleus Communicate with the Host Brain? Cell Transplant 2017; 4:75-81. [PMID: 7728336 DOI: 10.1177/096368979500400111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Fetal grafts containing the hypothalamic suprachiasmatic nucleus (SCN), the site of an endogenous circadian pacemaker, can reinstate behavioral rhythms in lesioned recipients but the precise routes of communication between the graft and the host brain remain unknown. Grafts containing the SCN may convey temporal information to the host brain via neural efferents, diffusible factors, or a combination of both. We examined graft-host connections in anterior hypothalamic homografts (hamster-to hamster) and heterografts (rat-to hamster) implanted in the third ventricle by: (a) applying the carbocyanine dye, dil, directly onto homo- and heterografts in fixed tissue sections; and (b) using a donor-specific neurofilament (NF) antibody to immuno-cytochemically visualize heterograft efferents. Dil applied onto either homografts or heterografts labeled relatively few graft efferents which could be followed only short distances into the host brain. In contrast, NF-labeled heterograft efferents were both more numerous and extended for longer distances into the host brain than anticipated on the basis of dil tract tracing. The results suggest that anterior hypothalamic grafts implanted in the third ventricle provide substantial input to the adjacent host hypothalamus although it is not known whether these projections arise from SCN cells or from other extra-SCN hypothalamic tissue within these grafts. Nor is it known whether these projections are functional. To determine if neural efferents are required for the restoration of rhythmicity after grafting, we have encapsulated fetal anterior hypothalamus in a permselective polymer which prevents neurite outgrowth but allows diffusible signals to reach the host brain. Polymer-encapsulated grafts of fetal anterior hypothalamus from wild-type hamster fetuses have been implanted into the third ventricle of heterozygote tau mutant, SCN-lesioned hamsters. Because the free-running period of tau mutant hamsters is significantly shorter than that of wild-type hamsters, restored rhythms when they occur can be unambiguously attributed to the presence of donor tissue. Encapsulated grafts that survive contain neuropeptide cell markers characteristic of the intact SCN, but the survival rate of encapsulated neural tissue is low. Nevertheless, if we find that even a few encapsulated grafts restore donor-specific rhythms, this would suggest that diffusible signals emitted from SCN grafts may be sufficient to support circadian function. It may be that the SCN in the intact animal communicates with the rest of the brain by redundant signals, either efferent fibers or diffusible signals. Alternatively, different circadian rhythms may be mediated by distinct output signals from the SCN.
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Affiliation(s)
- M N Lehman
- Department of Cell Biology, Neurobiology and Anatomy, University of Cincinnati College of Medicine, OH 45267, USA
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21
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Bhide A, Sebire N, Abuhamad A, Acharya G, Silver R. Morbidly adherent placenta: the need for standardization. Ultrasound Obstet Gynecol 2017; 49:559-563. [PMID: 28120421 DOI: 10.1002/uog.17417] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/10/2017] [Accepted: 01/20/2017] [Indexed: 06/06/2023]
Affiliation(s)
- A Bhide
- Fetal Medicine Unit, Lanesborough Wing, 4th Floor, St George's, University of London & St George's University Hospitals NHS Foundation Trust, Molecular and Clinical Sciences Research Institute, London, UK
| | - N Sebire
- Perinatal Pathology, Great Ormond Street Hospital, London, UK
| | - A Abuhamad
- Eastern Virginia Medical School, Norfolk, VA, USA
| | - G Acharya
- Department of Clinical Science, Intervention and Technology, Division of Obstetrics and Gynecology, Karolinska Institute, Stockholm, Sweden
- Department of Clinical Medicine, UiT-The Arctic University of Norway, Tromsø, Norway
| | - R Silver
- University of Utah School of Medicine, Salt Lake City, UT, USA
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22
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Higgins R, Silver R. Maternal fever, prematurity and early-onset sepsis. BJOG 2017; 124:784. [PMID: 28328053 DOI: 10.1111/1471-0528.14379] [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: 11/30/2022]
Affiliation(s)
- R Higgins
- Pregnancy and Perinatology Branch, NICHD/NIH, Bethesda, MD, USA
| | - R Silver
- Obstetrics & Gynaecology, University of Utah, Salt Lake City, UT, USA
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23
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Passamonti F, Mora B, Giorgino T, Guglielmelli P, Cazzola M, Maffioli M, Rambaldi A, Caramella M, Komrokji R, Gotlib J, Kiladjian JJ, Cervantes F, Devos T, Palandri F, De Stefano V, Ruggeri M, Silver R, Benevolo G, Albano F, Caramazza D, Rumi E, Merli M, Pietra D, Casalone R, Barbui T, Pieri L, Vannucchi AM. Driver mutations’ effect in secondary myelofibrosis: an international multicenter study based on 781 patients. Leukemia 2016; 31:970-973. [DOI: 10.1038/leu.2016.351] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Ramirez ER, Ghozland D, Silver R, Ehrenburg M, Yodfat E. Reproducible Laparoscopic Approach in Identifying Ureters During Complex Gynecologic Surgery: Simple and Safe Technique. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.254] [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: 10/20/2022]
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25
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Belfort MA, Shamshirsaz AA, Whitehead WE, Ball R, Silver R, Ruano R, Espinoza J, Mann DG, McCullough L, Chervenak F. Unusual pleuroamniotic shunt complication managed using a two-port in-CO2 fetoscopic technique: technical and ethical considerations. Ultrasound Obstet Gynecol 2016; 47:123-124. [PMID: 26183219 DOI: 10.1002/uog.14947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/02/2015] [Accepted: 06/09/2015] [Indexed: 06/04/2023]
Affiliation(s)
- M A Belfort
- Baylor College of Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, 6651 Main Street, Houston, TX, 77030, USA
| | - A A Shamshirsaz
- Baylor College of Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, 6651 Main Street, Houston, TX, 77030, USA
| | - W E Whitehead
- Baylor College of Medicine, Department Neurosurgery, Texas Children's Hospital Fetal Center, Houston, TX, USA
| | - R Ball
- Department of Obstetrics and Gynecology, St Marks Hospital, Salt Lake City, UT, USA
| | - R Silver
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA
| | - R Ruano
- Baylor College of Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, 6651 Main Street, Houston, TX, 77030, USA
| | - J Espinoza
- Baylor College of Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, 6651 Main Street, Houston, TX, 77030, USA
| | - D G Mann
- Baylor College of Medicine, Department of Anesthesiology, Texas Children's Hospital Fetal Center, Houston, TX, USA
| | - L McCullough
- Baylor College of Medicine, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, 6651 Main Street, Houston, TX, 77030, USA
| | - F Chervenak
- Department of Obstetrics and Gynecology, Weill-Cornell Medical College, New York, NY, USA
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26
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Ramirez ER, Ehrenburg M, Silver R, Churchill SJ, Ramirez HA. Laparoscopic Uterine Retrieval With Preservation of Uterine Vascular Pedicles: Promising Application for Human Uterine Transplants. J Minim Invasive Gynecol 2015; 22:S134. [DOI: 10.1016/j.jmig.2015.08.432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Silver R. Low-molecular-weight heparin and placental insufficiency: miracle drug or modern day blood letting? BJOG 2015; 123:806. [PMID: 26192695 DOI: 10.1111/1471-0528.13532] [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: 11/29/2022]
Affiliation(s)
- R Silver
- Department of Obstetrics and Gynecology, University of Utah School of Medicine, Salt Lake City, UT, USA
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28
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Johnson S, Fransen J, Khanna D, van den Hoogen F, Baron M, Matucci-Cerinic M, Denton C, Medsger T, Carreira P, Riemekasten G, Distler J, Gabrielli A, Steen V, Chung L, Silver R, Varga J, Muller-Ladner U, Vonk M, Walker U, Wollheim F, Herrick A, Furst D, Czirjak L, Kowal-Bielecka O, DelGaldo F, Cutolo M, Hunzelmann N, Murray C, Foeldvari I, Mouthon L, Damjanov N, Kahaleh B, Frech T, Assassi S, Saketkoo L, Pope J. AB0727 There is a Need for New Systemic Sclerosis Subset Criteria. A Content Analytic Approach. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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29
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Pauls S, Foley NC, Foley DK, LeSauter J, Hastings MH, Maywood ES, Silver R. Differential contributions of intra-cellular and inter-cellular mechanisms to the spatial and temporal architecture of the suprachiasmatic nucleus circadian circuitry in wild-type, cryptochrome-null and vasoactive intestinal peptide receptor 2-null mutant mice. Eur J Neurosci 2014; 40:2528-40. [PMID: 24891292 PMCID: PMC4159586 DOI: 10.1111/ejn.12631] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 12/11/2022]
Abstract
To serve as a robust internal circadian clock, the cell-autonomous molecular and electrophysiological activities of the individual neurons of the mammalian suprachiasmatic nucleus (SCN) are coordinated in time and neuroanatomical space. Although the contributions of the chemical and electrical interconnections between neurons are essential to this circuit-level orchestration, the features upon which they operate to confer robustness to the ensemble signal are not known. To address this, we applied several methods to deconstruct the interactions between the spatial and temporal organisation of circadian oscillations in organotypic slices from mice with circadian abnormalities. We studied the SCN of mice lacking Cryptochrome genes (Cry1 and Cry2), which are essential for cell-autonomous oscillation, and the SCN of mice lacking the vasoactive intestinal peptide receptor 2 (VPAC2-null), which is necessary for circuit-level integration, in order to map biological mechanisms to the revealed oscillatory features. The SCN of wild-type mice showed a strong link between the temporal rhythm of the bioluminescence profiles of PER2::LUC and regularly repeated spatially organised oscillation. The Cry-null SCN had stable spatial organisation but lacked temporal organisation, whereas in VPAC2-null SCN some specimens exhibited temporal organisation in the absence of spatial organisation. The results indicated that spatial and temporal organisation were separable, that they may have different mechanistic origins (cell-autonomous vs. interneuronal signaling) and that both were necessary to maintain robust and organised circadian rhythms throughout the SCN. This study therefore provided evidence that the coherent emergent properties of the neuronal circuitry, revealed in the spatially organised clusters, were essential to the pacemaking function of the SCN.
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Affiliation(s)
- S. Pauls
- Department of MathematicsDartmouth College6188 Kemeny HallHanoverNH03755USA
| | - N. C. Foley
- Department of NeuroscienceColumbia UniversityNew YorkNYUSA
| | - D. K. Foley
- Department of EconomicsNew School for Social ResearchNew YorkNYUSA
| | - J. LeSauter
- Department of PsychologyColumbia UniversityNew YorkNYUSA
| | - M. H. Hastings
- Division of NeurobiologyMRC Laboratory of Molecular BiologyCambridgeUK
| | - E. S. Maywood
- Division of NeurobiologyMRC Laboratory of Molecular BiologyCambridgeUK
| | - R. Silver
- Department of PsychologyColumbia UniversityNew YorkNYUSA
- Department of PsychologyBarnard College of Columbia UniversityNew YorkNYUSA
- Department of Pathology and Cell BiologyColumbia UniversityNew YorkNYUSA
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30
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Roifman M, Marcelis CLM, Paton T, Marshall C, Silver R, Lohr JL, Yntema HG, Venselaar H, Kayserili H, van Bon B, Seaward G, Brunner HG, Chitayat D. De novo WNT5A-associated autosomal dominant Robinow syndrome suggests specificity of genotype and phenotype. Clin Genet 2014; 87:34-41. [PMID: 24716670 DOI: 10.1111/cge.12401] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 03/30/2014] [Accepted: 04/07/2014] [Indexed: 11/27/2022]
Abstract
Robinow Syndrome (RS), a rare skeletal dysplasia syndrome, is characterized by dysmorphic features resembling a fetal face, mesomelic limb shortening, hypoplastic external genitalia in males, and renal and vertebral anomalies. Both autosomal dominant and autosomal recessive patterns of inheritance have been reported. Since the description of autosomal dominant Robinow Syndrome (ADRS; OMIM 180700) in 1969 by Meinhard Robinow and colleagues, the molecular etiology remained elusive until only recently. WNT5A was proposed to be the candidate gene for ADRS, as mutations were found in two affected families, one of those being the originally described index family. We report three families with RS caused by novel heterozygous WNT5A mutations, which were confirmed in the first family by whole exome sequencing, and in all by Sanger sequencing. To our knowledge, this is the largest number of published families with ADRS in whom a WNT5A mutation was identified. Families 1 and 2 are the first cases showing de novo inheritance in the affected family members and thus strengthen the evidence for WNT5A as the causative gene in ADRS. Finally, we propose WNT5A mutation specificity in ADRS, which may affect interactions with other proteins in the Wnt pathway.
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Affiliation(s)
- M Roifman
- The Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, Mount Sinai Hospital, Toronto, ON, Canada; Division of Clinical and Metabolic Genetics, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
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31
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Le Sauter J, Silver R. Suprachiasmatic nucleus lesions abolish and fetal grafts restore circadian gnawing rhythms in hamsters. Restor Neurol Neurosci 2012; 6:135-43. [PMID: 21551740 DOI: 10.3233/rnn-1994-6207] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It is widely accepted that the suprachiasmatic nuclei (SCN) of the hypothalamus serve as biological pacemakers, organizing daily activities. However some circadian rhythms are controlled by extra-SCN structures. Transplantation of fetal donor SCN in SCN-lesioned rodents induces recovery of rhythmic locomotor and drinking activities. Such grafts do not however, restore appropriate gonadal responses to photoperiodic stimuli. It is not known whether other behavioral rhythms are restored by fetal tissue grafts, or whether various responses are restored simultaneously. In the present study, we established that circadian rhythms of gnawing behavior are abolished following SCN lesions. Next, we measured both gnawing and wheel-running activity in SCN-lesioned hamsters following transplantation of fetal hypothalamic grafts containing the SCN. The results indicate that such grafts restore circadian rhythms of gnawing behavior, and that gnawing and wheel-running rhythms re-emerge at about the same time.
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Affiliation(s)
- J Le Sauter
- Barnard College of Columbia University, 3009 Broadway New York, NY 10027, USA
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32
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Moore O, Goh N, Corte T, Rouse H, Hennessy O, Byron J, Thakkar V, Sahhar J, Roddy J, Youssef P, Nash P, Zochling J, Proudman S, Stevens W, Nikpour M, Moore O, Goh N, Corte T, Rouse H, Hennessy O, Byron J, Thakkar V, Sahhar J, Roddy J, Youssef P, Nash P, Zochling J, Proudman S, Stevens W, Nikpour M, Tourkina E, Dyer S, Reese C, Oates JC, Hofbauer A, Bonner M, Visconti RP, Zhang J, Silver RM, Hoffman S, Liu X, Mayes M, Tan F, Harper B, Gonzalez E, Draeger H, Sharif R, Reveille J, Arnett F, Assassi S, Bogatkevich G, Akter T, Atanelishvili I, Liang J, Spyropoulos D, Silver R. S.2.1 Identifying and quantifying prognostic factors in SSc-related interstitial lung disease using a time-varying covariate survival model. Rheumatology (Oxford) 2012. [DOI: 10.1093/rheumatology/ker468] [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: 11/12/2022] Open
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33
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Schanberg LE, Sandborg C, Barnhart HX, Ardoin SP, Yow E, Evans GW, Mieszkalski KL, Ilowite NT, Eberhard A, Imundo LF, Kimura Y, von Scheven E, Silverman E, Bowyer SL, Punaro M, Singer NG, Sherry DD, McCurdy D, Klein-Gitelman M, Wallace C, Silver R, Wagner-Weiner L, Higgins GC, Brunner HI, Jung L, Soep JB, Reed AM, Provenzale J, Thompson SD. Use of atorvastatin in systemic lupus erythematosus in children and adolescents. Arthritis Rheum 2012; 64:285-96. [PMID: 22031171 PMCID: PMC4074430 DOI: 10.1002/art.30645] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Statins reduce atherosclerosis and cardiovascular morbidity in the general population, but their efficacy and safety in children and adolescents with systemic lupus erythematosus (SLE) are unknown. This study was undertaken to determine the 3-year efficacy and safety of atorvastatin in preventing subclinical atherosclerosis progression in pediatric-onset SLE. METHODS A total of 221 participants with pediatric SLE (ages 10-21 years) from 21 North American sites were enrolled in the Atherosclerosis Prevention in Pediatric Lupus Erythematosus study, a randomized double-blind, placebo-controlled clinical trial, between August 2003 and November 2006 with 36-month followup. Participants were randomized to receive atorvastatin (n=113) or placebo (n=108) at 10 or 20 mg/day depending on weight, in addition to usual care. The primary end point was progression of mean-mean common carotid intima-media thickening (CIMT) measured by ultrasound. Secondary end points included other segment/wall-specific CIMT measures, lipid profile, high-sensitivity C-reactive protein (hsCRP) level, and SLE disease activity and damage outcomes. RESULTS Progression of mean-mean common CIMT did not differ significantly between treatment groups (0.0010 mm/year for atorvastatin versus 0.0024 mm/year for placebo; P=0.24). The atorvastatin group achieved lower hsCRP (P=0.04), total cholesterol (P<0.001), and low-density lipoprotein (P<0.001) levels compared with placebo. In the placebo group, CIMT progressed significantly across all CIMT outcomes (0.0023-0.0144 mm/year; P<0.05). Serious adverse events and critical safety measures did not differ between groups. CONCLUSION Our results indicate that routine statin use over 3 years has no significant effect on subclinical atherosclerosis progression in young SLE patients; however, further analyses may suggest subgroups that would benefit from targeted statin therapy. Atorvastatin was well tolerated without safety concerns.
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Affiliation(s)
- L E Schanberg
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710, USA.
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Ardoin SP, Schanberg LE, Sandborg C, Yow E, Barnhart HX, Mieszkalski KL, Ilowite NT, von Scheven E, Eberhard A, Levy DM, Kimura Y, Silverman E, Bowyer SL, Punaro L, Singer NG, Sherry DD, McCurdy D, Klein-Gitelman M, Wallace C, Silver R, Wagner-Weiner L, Higgins GC, Brunner HI, Jung LK, Imundo L, Soep JB, Reed AM. Laboratory markers of cardiovascular risk in pediatric SLE: the APPLE baseline cohort. Lupus 2011; 19:1315-25. [PMID: 20861207 DOI: 10.1177/0961203310373937] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
As part of the Atherosclerosis Prevention in Pediatric Lupus Erythematosus (APPLE) Trial, a prospective multicenter cohort of 221 children and adolescents with systemic lupus erythematosus (SLE) (mean age 15.7 years, 83% female) underwent baseline measurement of markers of cardiovascular risk, including fasting levels of high-density lipoprotein (HDL), low-density lipoprotein (LDL), triglycerides (TG), lipoprotein A (Lpa), homocysteine and high-sensitivity C-reactive protein (hs-CRP). A cross-sectional analysis of the baseline laboratory values and clinical characteristics of this cohort was performed. Univariable relationships between the cardiovascular markers of interest and clinical variables were assessed, followed by multivariable linear regression modeling. Mean levels of LDL, HDL, Lpa, TG, hs-CRP and homocysteine were in the normal or borderline ranges. In multivariable analysis, increased Systemic Lupus Erythematosus Disease Activity Index (SLEDAI), prednisone dose, and hypertension (HTN) were independently associated with higher LDL levels. Higher hs-CRP and creatinine clearance were independently related to lower HDL levels. Higher body mass index (BMI), prednisone dose, and homocysteine levels were independently associated with higher TG levels. Only Hispanic or non-White status predicted higher Lpa levels. Proteinuria, higher TG and lower creatinine clearance were independently associated with higher homocysteine levels, while use of multivitamin with folate predicted lower homocysteine levels. Higher BMI, lower HDL, and longer SLE disease duration, but not SLEDAI, were independently associated with higher hs-CRP levels. The R(2) for these models ranged from 7% to 23%. SLE disease activity as measured by the SLEDAI was associated only with higher LDL levels and not with hs-CRP. Markers of renal injury (HTN, proteinuria, and creatinine clearance) were independently associated with levels of LDL, HDL, and homocysteine, highlighting the importance of renal status in the cardiovascular health of children and adolescents with SLE. Future longitudinal analysis of the APPLE cohort is needed to further examine these relationships.
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Affiliation(s)
- S P Ardoin
- Ohio State University Medical Center, Columbus, OH 43210,USA.
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Chung HYB, Chu L, Forrest C, Silver R, Toi A, Blaser S, Viero S, Taylor G, Chitayat D. Fetal forehead hemangiopericytoma: prenatal diagnosis and postnatal outcome. Ultrasound Obstet Gynecol 2010; 36:121-124. [PMID: 20217893 DOI: 10.1002/uog.7624] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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36
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Silver R, Lesauter J. Oscillators entrained by food and the emergence of anticipatory timing behaviors. Appetite 2010. [DOI: 10.1016/j.appet.2010.04.186] [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: 10/19/2022]
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Holmgren C, Esplin MS, Hamblin S, Molenda M, Simonsen S, Silver R. Evaluation of the use of anti-TNF-alpha in an LPS-induced murine model. J Reprod Immunol 2008; 78:134-9. [PMID: 18433878 DOI: 10.1016/j.jri.2007.11.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Revised: 10/01/2007] [Accepted: 11/06/2007] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Tumor necrosis factor alpha (TNF-alpha) may play a critical role in inflammatory-mediated preterm labor. Medications blocking the activity of TNF-alpha have been shown to be effective in the treatment of conditions such as rheumatoid arthritis; however, the use of these medications for an event like preterm birth or fetal death is unknown. We hypothesized that treatment with anti-TNF-alpha may decrease the rate of fetal death and preterm birth in a LPS-induced murine model. METHODS Pregnant C57BL/6J mice received intraperitoneal (IP) injections of either vehicle or 2mg anti-TNF-alpha. After 24h, 10 microg of LPS was administered IP. Mice were sacrificed 24h later and outcomes between groups were assessed. A second set of experiments utilizing RT-PCR was performed to determine the influence of anti-TNF-alpha on production of inflammatory cytokines in response to LPS. RESULTS There were 72 resultant pups in the LPS+saline group, and 91 in the group receiving LPS+anti-TNF-alpha. Pretreatment with anti-TNF-alpha reduced the rate of fetal death and preterm birth after LPS administration (p<0.01). Expression of IL-6, IL-1beta, TLR-2, CD14 and COX-1 were found to be significantly reduced in mice treated with anti-TNF-alpha and LPS compared to LPS alone. CONCLUSION The use of anti-TNF-alpha decreased fetal deaths and preterm deliveries in an LPS-induced model of preterm birth. In addition, there were critical gene expression alterations in the group receiving anti-TNF-alpha. Further evaluation of TNF-alpha blockade as a potential treatment for preterm labor is warranted.
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Affiliation(s)
- C Holmgren
- Department of Obstetrics and Gynecology, University of Utah Health Sciences Center, 20 North 1900 East, Salt Lake City, UT 84132, USA.
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Yan L, Karatsoreos I, Lesauter J, Welsh DK, Kay S, Foley D, Silver R. Exploring spatiotemporal organization of SCN circuits. Cold Spring Harb Symp Quant Biol 2007; 72:527-41. [PMID: 18419312 PMCID: PMC3281753 DOI: 10.1101/sqb.2007.72.037] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Suprachiasmatic nucleus (SCN) neuroanatomy has been a subject of intense interest since the discovery of the SCN's function as a brain clock and subsequent studies revealing substantial heterogeneity of its component neurons. Understanding the network organization of the SCN has become increasingly relevant in the context of studies showing that its functional circuitry, evident in the spatial and temporal expression of clock genes, can be reorganized by inputs from the internal and external environment. Although multiple mechanisms have been proposed for coupling among SCN neurons, relatively little is known of the precise pattern of SCN circuitry. To explore SCN networks, we examine responses of the SCN to various photic conditions, using in vivo and in vitro studies with associated mathematical modeling to study spatiotemporal changes in SCN activity. We find an orderly and reproducible spatiotemporal pattern of oscillatory gene expression in the SCN, which requires the presence of the ventrolateral core region. Without the SCN core region, behavioral rhythmicity is abolished in vivo, whereas low-amplitude rhythmicity can be detected in SCN slices in vitro, but with loss of normal topographic organization. These studies reveal SCN circuit properties required to signal daily time.
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Affiliation(s)
- L Yan
- Department of Psychology, Columbia University, New York, New York 10027, USA
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Abstract
Resting and actively degranulating mast cells are found on the brain side of the blood-brain barrier. In the periphery, exocytosis of mast cell granules results in the release of soluble mediators and insoluble granule remnants. These mast cell constituents are found in a variety of nearby cell types, acquired by fusion of granule and cellular membranes or by cellular capture of mast cell granule remnants. These phenomena have not been studied in the brain. In the current work, light and electron microscopic studies of the medial habenula of the dove brain revealed that mast cell-derived material can enter neurons in three ways: by direct fusion of the granule and plasma membranes (mast cell and neuron); by capture of insoluble granule remnants and, potentially, via receptor-mediated endocytosis of gonadotropin-releasing hormone, a soluble mediator derived from the mast cell. These processes result in differential subcellular localization of mast cell material in neurons, including free in the neuronal cytoplasm, membrane-bound in granule-like compartments or in association with small vesicles and the trans-Golgi network. Capture of granule remnants is the most frequently observed form of neuronal acquisition of mast cell products and correlates quantitatively with mast cells undergoing piecemeal degranulation. The present study indicates that mast cell-derived products can enter neurons, a process termed transgranulation, indicating a novel form of brain-immune system communication.
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Affiliation(s)
- M Wilhelm
- Department of Psychology, Columbia University, College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10032, USA
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Shore T, Schuster MW, Roboz G, Leonard JP, Silver R, Coleman M, Feldman E. A study of a non-myeloablative conditioning regimen followed by allogeneic stem cell transplant (NMT) for patients with hematological malignancies using campath as part of a graft versus host disease (GVHD) strategy. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.6625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- T. Shore
- Weill Medical College of Cornell University, New York, NY
| | - M. W. Schuster
- Weill Medical College of Cornell University, New York, NY
| | - G. Roboz
- Weill Medical College of Cornell University, New York, NY
| | - J. P. Leonard
- Weill Medical College of Cornell University, New York, NY
| | - R. Silver
- Weill Medical College of Cornell University, New York, NY
| | - M. Coleman
- Weill Medical College of Cornell University, New York, NY
| | - E. Feldman
- Weill Medical College of Cornell University, New York, NY
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Matucci-Cerinic M, D'Angelo S, Denton CP, Vlachoyiannopoulos P, Silver R. Assessment of lung involvement. Clin Exp Rheumatol 2003; 21:S19-23. [PMID: 12889217] [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: 03/04/2023]
Abstract
The aim of the subcommittee was to identify a core set of feasible variables reflecting the occurrence of interstitial and/or vascular lung disease. After extensive review of published studies and critical assessment of candidate variables, the subcommittee identified the minimal requirements to assess lung disease. Two core sets of variables are provided: the first concerns interstitial lung disease; the second pulmonary vascular disease.
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Affiliation(s)
- M Matucci-Cerinic
- Department of Medicine, Section of Rheumatology, University of Florence, Italy.
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Abstract
Successful reproduction requires precise temporal coordination among various endocrine and behavioural events. The circadian system regulates daily temporal organization in behaviour and physiology, including neuroendocrine rhythms. The main circadian pacemaker in mammals is located in the suprachiasmatic nuclei (SCN) of the anterior hypothalamus. The SCN sends direct efferents to the reproductive axis via monosynaptic projections to gonadotropin-releasing hormone (GnRH) neurones. This communication generates circadian endocrine rhythms as well as the preovulatory luteinizing hormone (LH) surge necessary for successful ovulation. One SCN peptide thought to be important for the regulation of oestrous cycles is vasoactive intestinal polypeptide (VIP). VIP neurones from the SCN contact GnRH cells, and these cells are preferentially activated during an LH surge in rats. Unlike adult rats, prepubertal females do not exhibit oestrous cycles, nor do they exhibit an LH surge in response to oestradiol positive-feedback. The present study was undertaken to determine the extent to which the development of a 'mature' reproductive axis in female rats is associated with modifications in VIP contacts on GnRH neurones. The brains of diestrus adult (approximately 60 days of age) and prepubertal (21 days of age) female rats were examined using double-label fluorescence immunohistochemistry for VIP and GnRH, with light and confocal microscopy. Although the total number of GnRH-immunoreactive neurones did not differ between adult and prepubertal females, adults had a significant increase in the percentage of GnRH cells receiving VIP contacts compared to juveniles. These data suggest that the development of reproductive hormone rhythms and oestrous cyclicity may be, in part, due to modifications of VIP input to the GnRH system.
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Affiliation(s)
- L J Kriegsfeld
- Department of Psychology, Columbia University, New York, NY, USA
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Abstract
Calbindin-D(28K)-immunoreactive cells are tightly packed within a discrete region of the caudal aspect of the suprachiasmatic nuclei of hamsters. These cells receive direct retinal input and are Fos-positive in response to a light pulse. Knowledge of their afferent and efferent connections is necessary to understand suprachiasmatic nucleus organization. The first aim of the present study is to identify interconnections between calbindin and other peptidergic cells of the suprachiasmatic nuclei, using epi- and confocal microscopy and intra-suprachiasmatic nucleus tract tracing. The results indicate that essentially all calbindin cells receive numerous appositions from vasoactive intestinal polypeptide (VIP), neuropeptide Y and serotonin fibers and that most receive appositions from gastrin releasing peptide (GRP) and cholecystokinin (CCK) fibers. Reciprocal connections are seen from VIP, GRP and CCK cells but surprisingly, not from dorsomedial vasopressin cells. Injection of biotinylated dextran amine into the suprachiasmatic nucleus indicates that the ventrolateral suprachiasmatic nucleus projects to the entire nucleus, while the dorsal and medial regions of the suprachiasmatic nucleus project densely to most of the nucleus, except to the calbindin region. Analysis of colocalization of the peptides in the calbindin cell region shows that 91% of the substance P cells, 42% of the GRP cells and 60% of the VIP cells in the calbindin subnucleus coexpress calbindin-D(28K). Our results reveal a highly specialized topographical organization of connections among suprachiasmatic nucleus cells.
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Affiliation(s)
- J. Lesauter
- Department of Psychology, Barnard College, 3009 Broadway, New York, NY 10027, USA
| | - L. J. Kriegsfeld
- Department of Psychology, MC 5501, Columbia University, 1190 Amsterdam Avenue, New York, NY 10027, USA
| | - J. Hon
- Department of Psychology, Barnard College, 3009 Broadway, New York, NY 10027, USA
| | - R. Silver
- Department of Psychology, Barnard College, 3009 Broadway, New York, NY 10027, USA
- Department of Psychology, MC 5501, Columbia University, 1190 Amsterdam Avenue, New York, NY 10027, USA
- Department of Anatomy and Cell Biology, Columbia University, New York, NY 10032, USA
- Correspondence to: R. Silver, Columbia University, Department of Psychology, MC 5501, 1190 Amsterdam Avenue, New York, NY 10027, USA. Tel.: +1-212-854-5531; fax: +1-212-854-3609
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Hamada T, LeSauter J, Venuti JM, Silver R. Expression of Period genes: rhythmic and nonrhythmic compartments of the suprachiasmatic nucleus pacemaker. J Neurosci 2001; 21:7742-50. [PMID: 11567064 PMCID: PMC3275352] [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] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2001] [Revised: 07/23/2001] [Accepted: 07/23/2001] [Indexed: 02/21/2023] Open
Abstract
The mammalian circadian clock lying in the suprachiasmatic nucleus (SCN) controls daily rhythms and synchronizes the organism to its environment. In all organisms studied, circadian timekeeping is cell-autonomous, and rhythmicity is thought to be generated by a feedback loop involving clock proteins that inhibit transcription of their own genes. In the present study, we examined how these cellular properties are organized within the SCN tissue to produce rhythmicity and photic entrainment. The results show that the SCN has two compartments regulating Period genes Per1, Per2, and Per3 mRNA expression differentially. One compartment shows endogenous rhythmicity in Per1, Per2, and Per3 mRNA expression. The other compartment does not have rhythmic mRNA expression but has gated light-induced Per1 and Per2 and high levels of endogenous nonrhythmic Per3 mRNA expression. These results reveal the occurrence of differential regulation of clock genes in two distinct SCN regions and suggest a potential mechanism for producing functional differences in distinct SCN subregions.
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Affiliation(s)
- T Hamada
- Department of Psychology, Columbia University, New York, New York 10027, USA
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Del Priore G, Chatterton R, Lee C, Silver R, Berg L, Lee MJ. Comparison of mononuclear cell proteins and plasma proteins before and during parturition by two dimensional electrophoresis. J Perinat Med 2001; 19:373-7. [PMID: 1804947 DOI: 10.1515/jpme.1991.19.5.373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two dimensional electrophoresis is a technique whereby protein sources are organized by molecular weight and electrical charge on a polyacrylamide gel. To detect changes that may be associated with the onset of parturition, we compared electrophoresis patterns of mononuclear cell proteins and plasma proteins before and during active labor. Mononuclear cells and plasma were obtained from 5 pregnant volunteers. It appears that A-1 apolipoprotein, identified by Western Blot analysis, is increased in mononuclear cells during active labor. Conversely, a decrease in the concentration of A-1 apolipoprotein was seen in plasma during parturition. These "normal" protein patterns can now be compared with those observed in pathologic conditions including preterm labor and may allow early detection of disease by protein abnormalities before clinical signs and symptoms develop.
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Affiliation(s)
- G Del Priore
- Department of Obstetrics and Gynecology, Northwestern University School of Medicine, Chicago, Illinois
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Affiliation(s)
- M Lehman
- Department of Cell Biology, Neurobiology and Anatomy, University of Cincinnati College of Medicine, OH 45267-0521, USA.
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Strange C, Bolster M, Mazur J, Taylor M, Gossage JR, Silver R. Hemodynamic effects of epoprostenol in patients with systemic sclerosis and pulmonary hypertension. Chest 2000; 118:1077-82. [PMID: 11035680 DOI: 10.1378/chest.118.4.1077] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [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: 11/01/2022] Open
Abstract
STUDY OBJECTIVES To determine the cause of pulmonary hypertension (PH) in systemic sclerosis (SSc) patients since PH can occur because of pulmonary arteriopathy, pulmonary parenchymal destruction, and left ventricular cardiac dysfunction. DESIGN AND SETTING Consecutive case series in a university hospital. PATIENTS Nine SSc patients with PH (mean pulmonary artery pressure, 41 mm Hg), with (n = 6) or without (n = 3) concomitant interstitial lung disease (ILD). METHODS Acute infusion of epoprostenol was begun at 2 ng/kg/min and was titrated upward at a rate of 2 ng/kg/min every 30 min until symptomatic complications developed or pulmonary artery vascular resistance (PVR) was reduced by 50%. RESULTS Eight of nine patients demonstrated a reduction of > or = 20% in PVR, suggesting that vasoreactivity is common despite the presence of significant ILD. A single patient had no response to infusion with unchanged hemodynamics and oxygenation. One patient developed hypoxemia as cardiac output increased, suggesting a worsening of ventilation/perfusion matching or the presence of an anatomic shunt. Acute pulmonary edema developed in one patient at an infusion rate of 6 ng/kg/min. The results of cardiac catheterization suggested that pulmonary edema was caused by SSc heart disease. CONCLUSION SSc patients with ILD have diverse and sometimes multiple causes of PH that can be determined by short-term epoprostenol infusion. Beneficial effects can be obtained from epoprostenol despite extensive ILD.
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MESH Headings
- Adult
- Antihypertensive Agents/administration & dosage
- Cardiac Catheterization
- Cardiac Output/drug effects
- Echocardiography, Doppler
- Epoprostenol/administration & dosage
- Female
- Hemodynamics/drug effects
- Humans
- Hypertension, Pulmonary/diagnostic imaging
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/etiology
- Hypertension, Pulmonary/physiopathology
- Infusions, Intravenous
- Male
- Middle Aged
- Pulmonary Wedge Pressure/drug effects
- Scleroderma, Systemic/complications
- Scleroderma, Systemic/diagnostic imaging
- Scleroderma, Systemic/drug therapy
- Scleroderma, Systemic/physiopathology
- Total Lung Capacity
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Affiliation(s)
- C Strange
- Division of Pulmonary and Critical Care Medicine, Allergy and Clinical Immunology, Medical University of South Carolina, Charleston, USA.
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Abstract
Differences in the overall mortality for acute infarction in women vs men have been appreciated for some time. Some of these differences are based on the age at the time of presentation of women compared with men. Excess mortality in women is most clear at the younger end of the age spectrum. More careful examination of the data has shown differences based on factors such as greater delays in presentation in women, real biases in the types of healthcare provider, and selection of diagnostic and therapeutic interventions for women compared with men. Recently, the mode of presentation has emerged as a major defining point. Women present more frequently with unstable angina or non-Q-wave infarction and have lesser mortality with these syndromes compared with men. Thus, the overall outcomes of acute coronary syndromes vary substantially from the differences in outcome for acute Q-wave infarction alone. New data have emerged regarding differences in treatment outcome for acute infarction. Women have derived lesser benefit from thrombolytic therapy and still respond to percutaneous transluminal coronary angioplasty more favorably than thrombolytic therapy for acute infarction. Women seem to have less benefit from stent use compared with angioplasty alone for acute infarction. Although increasing scrutiny has shed a great deal of light on some of these gender differences in outcomes from acute coronary syndromes, a real difference in mortality for younger women remains unexplained. The basis for real differences in outcome with the use of various therapies for acute infarction, such as thrombolysis and stent use, are also not well elucidated.
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Affiliation(s)
- T Feldman
- University of Chicago Hospitals, Pritzker School of Medicine, Chicago, IL, USA
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