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Meaklim H, Le F, Drummond SPA, Bains SK, Varma P, Junge MF, Jackson ML. Insomnia is more likely to persist than remit after a time of stress and uncertainty: a longitudinal cohort study examining trajectories and predictors of insomnia symptoms. Sleep 2024; 47:zsae028. [PMID: 38308584 PMCID: PMC11009016 DOI: 10.1093/sleep/zsae028] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/07/2023] [Indexed: 02/05/2024] Open
Abstract
STUDY OBJECTIVES The study aimed to characterize insomnia symptom trajectories over 12 months during a time of stress and uncertainty, the coronavirus disease 2019 (COVID-19) pandemic. It also aimed to investigate sleep and psychological predictors of persistent insomnia symptoms. METHODS This longitudinal cohort study comprised 2069 participants with and without insomnia symptoms during the first year of the pandemic. Participants completed online surveys investigating sleep, insomnia, and mental health at four timepoints over 12 months (April 2020-May 2021). Additional trait-level cognitive/psychological questionnaires were administered at 3 months only. RESULTS Six distinct classes of insomnia symptoms emerged: (1) severe persistent insomnia symptoms (21.65%), (2) moderate persistent insomnia symptoms (32.62%), (3) persistent good sleep (32.82%), (4) severe insomnia symptoms at baseline but remitting over time (2.27%), (5) moderate insomnia symptoms at baseline but remitting over time (7.78%), and (6) good sleep at baseline but deteriorating into insomnia symptoms over time (2.85%). Persistent insomnia trajectories were predicted by high levels of sleep reactivity, sleep effort, pre-sleep cognitive arousal, and depressive symptoms at baseline. A combination of high sleep reactivity and sleep effort reduced the odds of insomnia remitting. Higher sleep reactivity also predicted the deterioration of good sleep into insomnia symptoms over 12 months. Lastly, intolerance of uncertainty emerged as the only trait-level cognitive/psychological predictor of insomnia trajectory classes. CONCLUSIONS Insomnia was more likely to persist than remit over the first year of the COVID-19 pandemic. Addressing sleep reactivity and sleep effort appears critical for reducing insomnia persistence rates after times of stress and uncertainty.
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Affiliation(s)
- Hailey Meaklim
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
- Institute for Breathing and Sleep, Austin Health, Heidelberg, VIC, Australia
- Melbourne School of Psychological Sciences, University of Melbourne, Parkville, VIC, Australia
| | - Flora Le
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
| | - Sean P A Drummond
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
| | - Sukhjit K Bains
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
| | - Prerna Varma
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
| | - Moira F Junge
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
- Sleep Health Foundation, East Melbourne, VIC, Australia
| | - Melinda L Jackson
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Clayton, VIC, Australia
- Institute for Breathing and Sleep, Austin Health, Heidelberg, VIC, Australia
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Meaklim H, Burge M, Le F, Bains SK, Saunders W, Ghosh S, Junge MF, Varma P, Rehm IC, Jackson ML. Strange themes in pandemic dreams: Insomnia was associated with more negative, anxious and death-related dreams during the COVID-19 pandemic. J Sleep Res 2022; 32:e13655. [PMID: 35699296 PMCID: PMC9350044 DOI: 10.1111/jsr.13655] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 05/03/2022] [Accepted: 05/08/2022] [Indexed: 02/03/2023]
Abstract
Dreaming and insomnia are important markers of distress in times of crisis. Here, we present a longitudinal, mixed-methods study examining changes in dreaming between individuals with and without insomnia symptoms and their relationship to mental health during the COVID-19 pandemic. A global survey examining insomnia symptoms, dreams and mental health was launched in April 2020 and followed participants over 12 months. Of 2240 participants, 1009 (45%) reported dream changes at baseline. A higher proportion of participants with new-onset insomnia reported dream changes (55%) than those with pre-existing insomnia (45%) or good sleepers (36%). Overall, thematic analysis identified key dream change themes of increased dream activity, with participants dreaming vividly, in high-definition, and with a strong negative charge. Themes around survival, adjusting to pandemic life, meaning-making and poor sleep quality were also noted. Linguistic Inquiry Word Count showed that individuals with insomnia used more negative words to describe their dream changes than good sleepers. Specifically, the new-onset insomnia group used more anxious and death-related words than those who slept well. Notably, all groups experienced a significant reduction in dream activity by 3-month follow-up. Lastly, dream changes were associated with worse mental health symptoms over time, and this effect was more pronounced in individuals with insomnia. Our results highlight that insomnia symptoms, especially new-onset insomnia, are associated with more negative dream changes during collective stressful events, potentially compounding daytime distress and mental health symptoms over time. During times of crisis, dreaming and insomnia may reveal an important target for mental health interventions.
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Affiliation(s)
- Hailey Meaklim
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Malisa Burge
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Flora Le
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Sukjhit K. Bains
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - William Saunders
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Stephen Ghosh
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Moira F. Junge
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia,The Sleep Health FoundationBlacktownNew South WalesAustralia
| | - Prerna Varma
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
| | - Imogen C. Rehm
- College of Health and BiomedicineVictoria UniversityMelbourneVictoriaAustralia
| | - Melinda L. Jackson
- Turner Institute for Brain and Mental Health, School of Psychological SciencesMonash UniversityMonashVictoriaAustralia
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Le F, Yap Y, Tung NYC, Bei B, Wiley JF. The Associations Between Daily Activities and Affect: a Compositional Isotemporal Substitution Analysis. Int J Behav Med 2021; 29:456-468. [PMID: 34608593 DOI: 10.1007/s12529-021-10031-z] [Citation(s) in RCA: 2] [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] [Accepted: 09/23/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Daily activities are associated with affective experiences. A 24-h day can be separated into five mutually exclusive activity types: sleep, awake in bed, moderate-to-vigorous physical activity (MVPA), light-intensity physical activity (LIPA), and sedentary behavior (SB). Most research has examined these activities independently and not collectively, yet increased time in one activity must be offset by decreasing other activities. Using compositional isotemporal substitution analyses, this study examined the associations between time spent in daily activities and affect, including both high and low arousal positive and negative affect. METHOD Across three separate studies, daily activities and affect were measured throughout 7-15 days (Mdays = 10) in 361 healthy community adults (72.5% females, Mage = 22.79 years). Activities were objectively assessed using accelerometry and self-reported affect was assessed using repeated ecological momentary assessments. Minutes spent in each activity and affect values across the three studies were averaged for each participant. RESULTS Longer sleep duration at the expense of time awake in bed was associated with lower high arousal negative affect (e.g., nervousness, b = - 0.24, p = .007). More MVPA at the expense of LIPA or SB was associated with higher high arousal positive affect (e.g., happiness, b = 0.35, p = .027). Activity composition was not associated with low arousal positive or negative affect (all p ≥ .06). CONCLUSION Associations between 24-h activity composition and affect differed based on types of activities, types of affect, and the interrelationships between activities within the composition. Findings can aid interventions to develop integrated guidance on the optimal activity patterns for mental health.
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Affiliation(s)
- Flora Le
- School of Psychological Science, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Yang Yap
- School of Psychological Science, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Natasha Yan Chi Tung
- School of Psychological Science, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Bei Bei
- School of Psychological Science, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Joshua F Wiley
- School of Psychological Science, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia.
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Le F, Luo P, Yang QO, Zhong XM. MiR-181a promotes growth of thyroid cancer cells by targeting tumor suppressor RB1. Eur Rev Med Pharmacol Sci 2019; 21:5638-5647. [PMID: 29271997 DOI: 10.26355/eurrev_201712_14007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE MicroRNAs (miRs) are critical regulators in cancer development and progression. The current study aimed to investigate the expression and potential function of miR-181a in thyroid cancer. PATIENTS AND METHODS A total of 15 paired thyroid cancer tissues and adjacent normal tissues were subjected to Real-time Polymerase Chain Reaction (PCR) to evaluate miR-181a expression. 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay, enzyme linked immunosorbent assay (ELISA) or flow cytometry was employed to assess the growth activity, apoptosis and cell cycle, respectively, upon modulation of the miR-181a expression in TPC-1 cells. Western blot was used to assess protein expression. The interaction between miR-181a and RB1 was tested by luciferase activity assay. RESULTS The expression of miR-181a was significantly upregulated in thyroid cancer tissues compared with the adjacent tissues. Inhibition of miR-181a attenuated cell growth, which could be abrogated by miR-181a co-transfection. MiR-181a overexpression reduced apoptosis and promoted cell cycle progression; inhibition of miR-181a exerted opposite effects on both cell cycle and apoptosis. MiR-181a directly suppressed RB1 expression. RB1 expression in tumor tissues was downregulated and negatively correlated with miR-181a expression. CONCLUSIONS miR-181a plays an oncogenic role in thyroid cancer; by targeting RB1, it promotes cell cycle progression and inhibits apoptosis.
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Affiliation(s)
- F Le
- Department of Head and Neck Surgery, Jiangxi Cancer Hospital, Nanchang City, Jiangxi Province, Nanchang, China.
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Shapovalyants SG, Michalev AI, Timofeev ME, Polushkin VG, Volkov VV, Oettinger AP, Lorenz R, Koch A, Köckerling F, Burcharth J, Andresen K, Pommergaard HC, Bisgaard T, Rosenberg J, Friis-Andersen H, Li JW, Le F, Zheng MH, Roscio F, Combi F, Frattini P, Clerici F, Scandroglio I, Zhao X, Nie Y, Liu J, Wang M, Kuo L, Tsai CC, Mok KT, Liu SI, Chen IS, Chou NH, Wang BW, Chen YC, Chang BM, Liang TJ, Kang CH, Tsai CY, Dudai M, Zeng YJ, Liu TL, Shi CM, Sun L, Shu R, Kawaguchi M, Takahashi Y, Tochimoto M, Horiguchi Y, Kato H, Tawaraya K, Hosokawa O, Huang C, Sorge A, Masoni L, Maglio R, Di Marzo F, Mosconi C, Gallinella Muzi M, Kato J, Iuamoto L, Meyer A, Almehdi R, Alazri Y, Sahoo B, Ahmed R, Nasser M, Inaba T, Fukuhsima R, Yaguchi Y, Horikawa M, Ogawa E, Kumata Y, Pokorny H, Fischer I, Resinger C, Lorenz V, Podar S, Längue F, Etherson K, Atkinson K, Khan S, Pradeep R, Viswanath Y, Munipalle PC, Chung J, Schuricht A, Magalhães C, Marcos M, Flores A, Sekmen U, Paksoy M, Ceriani F, Cutaia S, Canziani M, Caravati F. Inguinal Hernia: Recurrences, Tailored Surgery & Pubic Inguinal Pain Syndrome (Sportsman Hernia). Hernia 2015; 19 Suppl 1:S167-75. [PMID: 26518795 DOI: 10.1007/bf03355345] [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: 11/28/2022]
Affiliation(s)
- S G Shapovalyants
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - A I Michalev
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - M E Timofeev
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - V G Polushkin
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - V V Volkov
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - A P Oettinger
- Institution of Applied Medical Sciences, Russian National Research Medical University, Moscow, Russia
| | - R Lorenz
- Hernia Center 3 Chirurgen, Berlin, Germany
| | - A Koch
- Surgical Practise, Cottbus, Germany
| | - F Köckerling
- Klinik für Allgemein, Viszeral und Gefäβchirurgie, Vivantes Klinikum Spandau, Berlin, Germany
| | - J Burcharth
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark
| | - K Andresen
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark.,Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - H-C Pommergaard
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark
| | - T Bisgaard
- Department of Surgery, Hvidovre Hospital, Hvidovre, Denmark.,The Danish Hernia Database, Copenhagen, Denmark
| | - J Rosenberg
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark.,The Danish Hernia Database, Copenhagen, Denmark.,Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - J W Li
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | | | - F Roscio
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - F Combi
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - P Frattini
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - F Clerici
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - I Scandroglio
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - X Zhao
- Beijing Chao-Yang Hospital, Beijing, China
| | | | | | | | - L Kuo
- Department of General Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | - M Dudai
- Hernia Excellence, Ramat Aviv Medical Center, Tel Aviv, Israel
| | - Y J Zeng
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - T L Liu
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - C M Shi
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - L Sun
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - R Shu
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - M Kawaguchi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - Y Takahashi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - M Tochimoto
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - Y Horiguchi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - H Kato
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - K Tawaraya
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - O Hosokawa
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - C Huang
- Cathay medical center, Taipei, Taiwan.,Taipei medical university, Taipei, Taiwan
| | - A Sorge
- Ospedale S. Giovanni Bosco, Napoli, Italy
| | | | - R Maglio
- Ospedale Israelitico, Roma, Italy
| | - F Di Marzo
- Ospedale S. Giovanni Bosco, Napoli, Italy
| | - C Mosconi
- Policlinico Universitario Tor Vergata, Roma, Italy
| | | | - J Kato
- University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - L Iuamoto
- University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - A Meyer
- Abdominal Wall Repair Center, Samaritano Hospital, Sao Paulo, Brazil
| | | | | | | | | | | | - T Inaba
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - R Fukuhsima
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Y Yaguchi
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - M Horikawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - E Ogawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Y Kumata
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - H Pokorny
- LK Wiener Neustadt, Wiener Neustadt, Austria
| | | | | | | | | | | | - K Etherson
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - K Atkinson
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - S Khan
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - R Pradeep
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - Y Viswanath
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | | | - J Chung
- University of Pennsylvania Health System, Philadelphia, USA
| | - A Schuricht
- University of Pennsylvania Health System, Philadelphia, USA
| | | | - M Marcos
- Centro Hospitalar Porto, Porto, Portugal.,Institute Cuf, Porto, Portugal
| | - A Flores
- Centro Hospitalar Porto, Porto, Portugal.,Institute Cuf, Porto, Portugal
| | - U Sekmen
- Acibadem Hospital, Istanbul, Turkey
| | - M Paksoy
- Dept. of Gen. Surg., Istanbul Uni. Cerrahpasa Med. School, Istanbul, Turkey
| | - F Ceriani
- Multimedica Santa Maria, Castellanza, Va, Italy
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Le F, Fourie R, Hattingh J. A Seasonal Study of the Haematology of Carp (Cyprinus Carpio) From a Locality in the Transvaal, South Africa. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/00445096.1976.11447516] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zeadna A, Holzer H, Son WY, Demirtas E, Reinblatt S, Dahan MH, Colleselli V, D'Costa E, Wildt L, Seeber B, Kashevarova AA, Skryabin NA, Nikitina TV, Lebedev IN, Bordignon PP, Mugione A, Vanni VS, Vigano P, Papaleo E, Candiani M, Somigliana E, Amodio G, Gregori S, Guo YH, Li R, Wang LL, Chen SL, Chen X, Guo W, Ye DS, Liu YD, Renzini MM, Dal Canto M, Coticchio G, Comi R, Brigante C, Caliari I, Brambillasca F, Merola M, Lain M, Turchi D, Karagouga G, Sottocornola M, Fadini R, Wekker MZ, Mol F, van Wely M, Ankum WM, Mol BW, van der Veen F, Hajenius PJ, van Mello NM, Verlengia C, Alviggi E, Rampini MR, Alfano P, Pergolini I, Marconi D, Iacobelli N, Muzi MC, Gelli G, Alviggi C, Colicchia A, Herraiz-Nicuesa L, Tejera-Alhambra M, Garcia-Segovia A, Ramos-Medina R, Alonso B, Gil-Pulido J, Martin L, Caballero M, Rodriguez-Mahou M, Sanchez-Ramon S, de Jong PG, Kaandorp SP, Di Nisio M, Goddijn M, Middeldorp S, Lledo B, Turienzo A, Ortiz JA, Morales R, Ten J, Llacer J, Bernabeu R, Ramos-Medina R, Garcia-Segovia A, Gil J, Leon JA, Alonso B, Tejera-Alhambra M, Seyfferth A, Aguaron A, Alonso J, de Albornoz EC, Carbone J, Caballero P, Fernandez-Cruz E, Ortiz-Quintana L, Sanchez-Ramon S, Lou YY, Jin F, Zheng YM, Li LJ, Le F, Wang LY, Liu SY, Pan PP, Hu CX, Akoum A, Bourdiec A, Shao R, Rao CV, Scarpellini F, Sbracia M, Jancar N, Bokal EV, Ban-Frangez H, Drobnic S, Korosec S, Pinter B, Salamun V, Yamaguchi M, Honda R, Uchino K, Ohba T, Katabuchi H, Leylek O, Tiras B, Saltik AYSE, Halicigil C, Kavci N, Wiser A, Gilbert A, Nahum R, Orvieto R, Hass J, Hourvitz A, Weissman A, Younes G, Dirnfeld M, Hershko A, Shulma A, Holzer H, Shalom-Paz E, Tulandi T, O'Neill SM, Agerbo E, Kenny LC, Henriksen TB, Kearney PM, Greene RA, Mortensen PB, Khashan AS, Talaulikar VS, Bax BE, Manyonda I, Van Mello N, Mol F, Hajenius PJ, Ankum WM, Mol BW, van der Veen F, van Wely M. Early pregnancy. Hum Reprod 2013. [DOI: 10.1093/humrep/det209] [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: 11/14/2022] Open
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Thornhill A, Dibouni ZA, Shah T, Wheat S, Teitelbaum M, Walker M, Bissonette F, Yuzpe AL, Leveille MC, Gysler M, Johnson M, Sprague A, Villena JG, Aparicio JL, Gimenez J, Ten J, Perez RB, Scholten I, Chambers GM, van Loendersloot L, van der Veen F, Repping S, Gianotten J, Hompes PGA, Ledger W, Mol BWJ, Dior UP, Laufer N, Granovsky-Grisaru S, Yagel S, Yaffe H, Gielchinsky Y, Nelen WLDM, Huppelschoten AG, Verkerk EW, Adang EMM, Kremer JAM, Davies M, Rumbold A, Marino J, Willson K, Moore V, Giles L, Shebl O, Ebner T, Tews G, Haas D, Oppelt P, Mayer RB, Sanges F, Maggiulli R, Albricci L, Romano S, Scarica C, Schimberni M, Giallonardo A, Vettraino G, Ubaldi F, Rienzi L, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Obrado EC, Barredo DR, Navarro LL, Rodriguez AV, Rague PNB, Lletget BC, Padro RT, Oron G, Sokal-Arnon T, Zeadna A, Son WY, Holzer H, Tulandi T, Nakamura Y, Hattori H, Sato Y, Kuchiki M, Sakamoto E, Doshida M, Toya M, Kyono K, Nakajo Y, Nakamura Y, Hirata K, Doshida M, Toya M, Kyono K, Xin ZM, Zhu H, Sun YP, Jin HX, Song WY, Rodriguez A, Poisot F, Rodriguez F, Coll O, Vassena R, Vernaeve V, Ye Y, Wang L, Wang N, Le F, Jin F, Zheng Y, Jin F, Lou Y, Le F, Pan PP, Wang N, Wang LY, Hu CX, Liu SY, Zheng YM, Li LJ, Liu XZ, Xu XR, Huang HF, Jin F, Lin SL, Li M, Lian Y, Chen LX, Liu P, Kawwass JF, Crawford S, Kissin DM, Session DR, Boulet S, Jamieson DJ. Quality and safety of ART therapies. Hum Reprod 2013. [DOI: 10.1093/humrep/det219] [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: 11/13/2022] Open
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Nelissen E, Van Montfoort APA, Menheere PPCA, Evers JLH, Peeters LL, Dumoulin JCM, Hemkemeyer S, Schwarzer C, Boiani M, Ehmcke J, Esteves TC, Nordhoff V, Schlatt S, Wang LY, Wang N, Le F, Li L, Jin F, Youssef M, Mantikou E, Gaber H, Khattab S, van Wely M, Mastenbroek S, Van der Veen F, Repping S, Van Montfoort APA, Nelissen ECM, Daunay A, Evers JLH, Geraedts JPM, Tost J, Dumoulin JCM. SELECTED ORAL COMMUNICATION SESSION, SESSION 46: SAFETY OF IVF CULTURE, Tuesday 5 July 2011 15:15 - 16:30. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.46] [Citation(s) in RCA: 2] [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: 11/12/2022] Open
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Lee I, Barad DH, Weghofer A, Gleicher N, Maruthini D, Harris S, Baskind E, Sharma V, Balen AH, Picton HM, Le F, Wang N, Li L, Huang HF, Jin F, Perrin J, Tassistro V, Mandon M, Metzler-Guillemain C, Courbi`re B, Grillo JM, Botta A, Sari-Minodier I. SELECTED ORAL COMMUNICATION SESSION, SESSION 15: BASIC RESEARCH, Monday 4 July 2011 14:00 - 15:00. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ocal P, Sahmay S, Irez T, Senol H, Cepni I, Purisa S, Lin W, Liu X, Donjacour A, Maltepe E, Rinaudo P, Baumgarten MN, Stoop D, Haentjes P, Verheyen G, De Schrijver F, Liebaers I, Camus M, Bonduelle M, Devroey P, Nelissen ECM, Van Montfoort APA, Coonen E, Derhaag JG, Evers JLH, Dumoulin JCM, Costa Lopes JR, Mendes dos Santos J, Portugal Silva Lima S, Portugal Silva Souza S, Rodrigues Pereira T, Barguil Brasileiro JP, Pina H, Lessa ML, Genovese Soares M, Medina Lopes V, Ribeiro CG, Adami K, Hughes C, Emerson G, Grundy K, Kelly P, Mocanu E, Rodrigues Pereira T, Medina Lopes V, Barguil Brasileiro JP, Coelho Cafe T, de Souza Costa JBM, Zavattiero Tierno NI, Portugal Silva Lima S, Portugal Silva Souza S, Mendes dos Santos J, Costa Lopes JR, Rinaudo P, Lin W, Liu X, Donjacour A, Singh S, Vitthala S, Zosmer A, Sabatini L, Tozer A, Davis C, Al-Shawaf T, Neri QV, Monahan D, Rosenwaks Z, Palermo GD, Kalu E, Thum MY, Abdalla HA, Sazonova A, Bergh C, Kallen K, Thurin-Kjellberg A, Wennerholm UB, Griesinger G, Doody K, Witjes H, Mannaerts B, Tarlatzis B, Witjes H, Mannaerts B, Rombauts L, Heijnen E, Marintcheva-Petrova M, Elbers J, Koning A, Mutsaerts MAQ, Hoek A, Mol BW, Fadini R, Guarnieri T, Mignini Renzini M, Comi R, Mastrolilli M, Villa A, Colpi E, Coticchio G, Dal Canto M, Dolleman M, Broer SL, Opmeer BC, Fauser BC, Mol BW, Broekmans FJM, Alama P, Requena A, Crespo J, Munoz M, Ballesteros A, Munoz E, Fernandez M, Meseguer M, Garcia-Velasco JA, Pellicer A, Munk M, Smidt-Jensen S, Blaabjerg J, Christoffersen C, Lenz S, Lindenberg S, Bosch E, Labarta E, Cruz F, Simon C, Remohi J, Pellicer A, Esler J, Osborn J, Boissonnas Chalas C, Marszalek A, Fauque P, Wolf JP, De Ziegler D, Cabanes L, Jouannet P, Han AR, Park CW, Cha SW, Kim HO, Yang KM, Kim JY, Song IO, Koong MK, Kang IS, Roszaman R, Omar MH, Nazri Y, Azantee YW, Murad AZ, Zainulrashid MR, Wang N, Le F, Wang LY, Ding GL, Sheng JZ, Huang HF, Jin F, Reinblatt S, Holzer H, Son WY, Shalom-Paz E, Chian RC, Buckett W, Dahan M, Demirtas E, Tan SL, Revel A, Schejter-Dinur Y, Revel-Vilk S, Hermens RPMG, van den Boogaard E, Leschot NJ, Vollebergh JHA, Bernardus R, Kremer JAM, van der Veen F, Goddijn M, Nahuis MJ, Kose N, Bayram N, Hompes PGA, Mol BWJ, van der veen F, van Wely M, Van Disseldorp J, Broer SL, Dolleman MD, Broeze K, Opmeer BC, Mol BW, Broekmans FJM, De Rycke M, Petrussa L, Liebaers I, Van de Velde H, Cerrillo M, Pacheco A, Rodriguez S, Gomez R, Delagado F, Pellicer A, Garcia Velasco JA, Desmyttere S, Verpoest W, De Rycke M, Staessen C, De Vos A, Liebaers I, Bonduelle M, Kohls G, Ruiz FJ, De la Fuente G, Toribio M, Martinez M, Pellicer A, Garcia-Velasco JA, Soderstrom - Anttila V, Salevaara M, Suikkari AM, Clua E, Tur R, Alcaniz N, Boada M, Rodriguez I, Barri PN, Veiga A, Nelen WLDM, Van Empel IWH, Cohlen BJ, Laven JS, Aarts JWM, Kremer JAM, Ricciarelli E, Gomez-Palomares JL, Andres-Criado L, Hernandez ER, Courbiere B, Aye M, Perrin J, Di Giorgio C, De Meo M, Botta A, Castilla Alcala J, Luceno Maestre F, Cabello Y, Gomez-Palomares JL, Hernandez J, Marqueta J, Pareja A, Hernandez E, Coroleu B, Helmgaard L, Klein BM, Arce JC, Aarts JWM, van Empel IWH, Boivin J, Kremer JAM, Verhaak CM, Ding G, Yin R, Wang N, Sheng J, Huang H, Mancini F, Tur R, Gomez MJ, Rodriguez I, Coroleu B, Barri PN, van den Boogaard NM, van der Steeg JW, van der Veen F, Hompes P, Mol BW, Boyer P, Gervoise-Boyer M, Meddeb L, Rossin B, Audibert F, Sakian S, Chan Wong E, Ma S, Pathak R, Mustafa MD, Ahmed RS, Tripathi AK, Guleria K, Banerjee BD, Vela G, Luna M, Flisser ED, Sandler B, Brodman M, Grunfeld L, Copperman AB, Baronio M, Carrascosa P, Capunay C, Vallejos J, Papier S, Borghi M, Sueldo C, Carrascosa J, Martin Lopez E, Marcucci A, Marcucci I, Salacone P, Sebastianelli A, Caponecchia L, Pacini N, Rago R, Alvarez M, Carreras O, Gomez MJ, Tur R, Coroleu B, Barri PN, Arnoldi M, Diaferia D, Corbucci MG, De Lauretis L, Kook MJ, Jung JY, Lee JH, Jung YJ, Hwang HK, Kang A, An SJ, Kim HM, Kwon HC, Lee SJ, Satoh M, Imada J, Ito K, Migishima F, Inoue T, Ohnishi Y, Kawato H, Nakaoka Y, Fukuda A, Morimoto Y, Mourad S, Hermens RPMG, Nelen WLDM, Grol RPTM, Kremer JAM, Polyzos NP, Valachis A, Patavoukas E, Papanikolaou EG, Messinis IE, Tarlatzis BC, Kang H, Kim CH, Park E, Kim S, Chae HD, Kang BM, Jung KS, Song HJ, Ahn YS, Petkova L, Canov I, Milachich T, Shterev A, Patrat C, Fauque P, Pocate K, Juillard JC, Gayet V, Blanchet V, de Ziegler D, Wolf JP, van der JW, Leushuis E, Steures P, Koks C, Oosterhuis J, Bourdrez P, Bossuyt PM, van der Veen F, Mol BWJ, Hompes PGA. Posters * Safety & Quality (I.E. Guidelines, Multiple Pregnancy, Outcome, Follow-Up etc.). Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.310] [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: 11/15/2022] Open
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Desrosiers MF, Fattibene P, Le F. An absorbed dose map of bone tissue treated with a radiopharmaceutical in vivo. Health Phys 2007; 92:176-8. [PMID: 17220719 DOI: 10.1097/01.hp.0000238604.67236.05] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A beagle humerus treated with Ho-chelate radiopharmaceutical in vivo was examined by electron paramagnetic resonance (EPR) dosimetry. The bone was sectioned and the absorbed dose to each bone fragment was determined by additive re-irradiation of the bone tissue with calibrated doses of gamma radiation. The measured doses ranged from 4.3 Gy to 62 Gy. The highest doses were recorded in the predominately trabecular bone tissue and the lowest doses in the predominately cortical bone tissue. The mean absorbed dose for the entire bone was 17 Gy. The data from 50 bone fragments were combined to create an absorbed dose map of the interior bone surface.
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Affiliation(s)
- M F Desrosiers
- Ionizing Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
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Le F, Lwin NZ, Steele JM, Käll M, Halas NJ, Nordlander P. Plasmons in the metallic nanoparticle-film system as a tunable impurity problem. Nano Lett 2005; 5:2009-13. [PMID: 16218728 DOI: 10.1021/nl0515100] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We show that the plasmon resonances of a metallic nanoparticle interacting with the surface plasmons of a metallic film is an electromagnetic analogue of the spinless Anderson-Fano model. This is the same model used to describe the interaction of a localized electronic state with a continuous band of electronic states. The three characteristic regimes of this model are realized here, where the energy of the nanoparticle plasmon resonance lies above, within, or below the energy band of surface plasmon states. These three interaction regimes are controlled by film thickness. The latter regime is experimentally observed and identified.
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Affiliation(s)
- F Le
- Laboratory for Nanophotonics, M.S. 366, Rice University, Houston, TX 77005-1892, USA
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Le F, Stomski F, Woodcock JM, Lopez AF, Gonda TJ. The role of disulfide-linked dimerization in interleukin-3 receptor signaling and biological activity. J Biol Chem 2000; 275:5124-30. [PMID: 10671557 DOI: 10.1074/jbc.275.7.5124] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/06/2022] Open
Abstract
Cysteine residues 86 and 91 of the beta subunit of the human interleukin (hIL)-3 receptor (hbetac) participate in disulfide-linked receptor subunit heterodimerization. This linkage is essential for receptor tyrosine phosphorylation, since the Cys-86 --> Ala (Mc4) and Cys-91 --> Ala (Mc5) mutations abolished both events. Here, we used these mutants to examine whether disulfide-linked receptor dimerization affects the biological and biochemical activities of the IL-3 receptor. Murine T cells expressing hIL-3Ralpha and Mc4 or Mc5 did not proliferate in hIL-3, whereas cells expressing wild-type hbetac exhibited rapid proliferation. However, a small subpopulation of cells expressing each mutant could be selected for growth in IL-3, and these proliferated similarly to cells expressing wild-type hbetac, despite failing to undergo IL-3-stimulated hbetac tyrosine phosphorylation. The Mc4 and Mc5 mutations substantially reduced, but did not abrogate, IL-3-mediated anti-apoptotic activity in the unselected populations. Moreover, the mutations abolished IL-3-induced JAK2, STAT, and AKT activation in the unselected cells, whereas activation of these molecules in IL-3-selected cells was normal. In contrast, Mc4 and Mc5 showed a limited effect on activation of Erk1 and -2 in unselected cells. These data suggest that whereas disulfide-mediated cross-linking and hbetac tyrosine phosphorylation are normally important for receptor activation, alternative mechanisms can bypass these requirements.
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Affiliation(s)
- F Le
- Hanson Centre for Cancer Research, The Institute of Medical and Veterinary Science, Adelaide, South Australia 5000, Australia
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Jenkins BJ, Le F, Gonda TJ. A cell type-specific constitutive point mutant of the common beta-subunit of the human granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin (IL)-3, and IL-5 receptors requires the GM-CSF receptor alpha-subunit for activation. J Biol Chem 1999; 274:8669-77. [PMID: 10085105 DOI: 10.1074/jbc.274.13.8669] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The high affinity receptor for human granulocyte-macrophage colony-stimulating factor (GM-CSF) consists of a cytokine-specific alpha-subunit (hGMRalpha) and a common signal-transducing beta-subunit (hbetac) that is shared with the interleukin-3 and -5 receptors. We have previously identified a constitutively active extracellular point mutant of hbetac, I374N, that can confer factor independence on murine FDC-P1 cells but not BAF-B03 or CTLL-2 cells (Jenkins, B. J., D'Andrea, R. J., and Gonda, T. J. (1995) EMBO J. 14, 4276-4287). This restricted activity suggested the involvement of cell type-specific signaling molecules in the activation of this mutant. We report here that one such molecule is the mouse GMRalpha (mGMRalpha) subunit, since introduction of mGMRalpha, but not hGMRalpha, into BAF-B03 or CTLL-2 cells expressing the I374N mutant conferred factor independence. Experiments utilizing mouse/human chimeric GMRalpha subunits indicated that the species specificity lies in the extracellular domain of GMRalpha. Importantly, the requirement for mGMRalpha correlated with the ability of I374N (but not wild-type hbetac) to constitutively associate with mGMRalpha. Expression of I374N in human factor-dependent UT7 cells also led to factor-independent proliferation, with concomitant up-regulation of hGMRalpha surface expression. Taken together, these findings suggest a critical role for association with GMRalpha in the constitutive activity of I374N.
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Affiliation(s)
- B J Jenkins
- Hanson Centre for Cancer Research and Division of Human Immunology, Institute of Medical and Veterinary Science, Frome Road, Adelaide, South Australia 5000, Australia
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Abstract
To clarify the findings that clozapine is both a muscarinic receptor agonist and antagonist, we examined the effects of neuroleptics on forskolin-stimulated cAMP accumulation in Chinese hamster ovary cells expressing human muscarinic m4 receptors (CHO-hm4) and in rat striatum. With CHO-hm4 cells, clozapine induced a concentration-dependent and atropine-sensitive inhibition on cAMP formation, with EC50 = 60 nM and Emax = 74% of carbachol maximum. Other atypical neuroleptics, fluperlapine, tenilapine and olanzapine, were similar but less potent, while risperidone, rilapine, quetiapine (ICI 204,636), sertindole, and ziprasidone had almost no effect. Typical neuroleptics, haloperidol, chlorpromazine, fluphenazine, thiothixene, thioridazine, and molindone, showed either no effect or an atropine-resistant inhibition of cAMP formation. However, in rat striatal tissues, clozapine, up to 10 microM, did not show a significant inhibition of cAMP formation, probably due to a relatively low abundance of muscarinic m4 receptors and the presence of multiple types of muscarinic and other receptors, with which clozapine interacts. Nevertheless, muscarinic m4 receptor agonism, to some extent, may be a relevant mechanism for the therapeutic efficacy and side effects of clozapine and some atypical neuroleptics.
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Affiliation(s)
- X P Zeng
- Neuropharmacology Laboratory, Mayo Clinic Jacksonville, Mayo Foundation for Medical Education and Research, Jacksonville, FL 32224, USA
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Le F, Groshan K, Zeng XP, Richelson E. Characterization of the genomic structure, promoter region, and a tetranucleotide repeat polymorphism of the human neurotensin receptor gene. J Biol Chem 1997; 272:1315-22. [PMID: 8995438 DOI: 10.1074/jbc.272.2.1315] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
In the present study, we have cloned the human neurotensin receptor (NTR) gene, determined its structure, demonstrated that its promoter is functional in transfection experiments, and identified the start site of transcription and a tetranucleotide repeat polymorphism that locates at less than 3 kilobase pairs from the gene. The gene contains three introns, all in the coding regions. Several differences in genomic clones and previously characterized cDNA sequences are reconciled. The 5' regulatory region, which is rich in presumptive transcription factors, can drive luciferase expression in transfected CHO-K1 cells. Stepwise 5' deletions identify a positive modulator between -782 and -1309 and a negative modulator between -1309 and -1563. Southern blot analyses demonstrate a single copy gene for the NTR. The tetranucleotide repeat polymorphism is highly informative with at least 23 alleles and might serve as a very useful marker for genetic study of the relationship between the NTR and neuropsychiatric disorders.
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Affiliation(s)
- F Le
- Laboratory of Neuropsychopharmacology, Mayo Clinic, Jacksonville, Florida 32224, USA
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Le F, Zeng XP, Richelson E. Tetranucleotide repeat polymorphism in the human neurotensin receptor (NT-R) gene. Clin Genet 1997; 51:76-7. [PMID: 9084943] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- F Le
- Laboratory of Neuropsychopharmacology, Mayo Clinic, Jacksonville, FL 32224, USA
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Le F, Townsend-Nicholson A, Baker E, Sutherland GR, Schofield PR. Characterization and chromosomal localization of the human A2a adenosine receptor gene: ADORA2A. Biochem Biophys Res Commun 1996; 223:461-7. [PMID: 8670304 DOI: 10.1006/bbrc.1996.0916] [Citation(s) in RCA: 26] [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: 02/01/2023]
Abstract
The gene for the stimulatory G protein-coupled human A2a adenosine receptor was isolated and sequence analysis revealed two exons that are interrupted by an intron of approximately 6.4 kb. An intron is located in the same region in the human A1 and A2b adenosine receptor genes. Comparison of the A2a genomic and cDNA sequences reveals two nucleotide differences in the coding region and the presence of an aberrant sequence in the 5'208 base pairs of the A2a cDNA including a polymorphism in the third base of codon Tyr-361 and Gly codon which was always detected at residue 392, indicated that the Arg codon present in the cDNA may be an artifact. Fluorescent in situ hybridization and PCR analysis of human-hamster hybrid cell panels shows that the A2a receptor gene is localized to chromosome 22q11.2. This is in contrast with previous reports (subsequently retracted) which mapped the A2a gene to chromosome 11q11-13.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Chromosome Mapping
- Chromosomes, Human, Pair 11
- Cloning, Molecular
- Cricetinae
- DNA Primers
- DNA, Complementary
- Genomic Library
- Humans
- In Situ Hybridization, Fluorescence
- Male
- Mice
- Molecular Sequence Data
- Polymerase Chain Reaction
- Polymorphism, Genetic
- Pseudogenes
- Receptor, Adenosine A2A
- Receptors, Purinergic P1/analysis
- Receptors, Purinergic P1/biosynthesis
- Receptors, Purinergic P1/genetics
- Repetitive Sequences, Nucleic Acid
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Affiliation(s)
- F Le
- Garvan Institute for Medical Research, Sydney, Australia
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Affiliation(s)
- F Le
- Neuropsycho-pharmacology Laboratory, Mayo Clinic Jacksonville, Fl. 32224, USA
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Le F, Mitchell P, Vivero C, Waters B, Donald J, Selbie LA, Shine J, Schofield P. Exclusion of close linkage of bipolar disorder to the Gs-alpha subunit gene in nine Australian pedigrees. J Affect Disord 1994; 32:187-95. [PMID: 7531727 DOI: 10.1016/0165-0327(94)90017-5] [Citation(s) in RCA: 26] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Growing evidence suggests that guanine nucleotide binding proteins (G proteins) may be involved in both the pathogenesis and treatment of bipolar affective disorder. Both overactive G proteins and increased levels of the alpha subunit of the stimulatory form (Gs-alpha) have been demonstrated in peripheral leucocytes of manic patients while an increase of Gs-alpha subunit levels has also been found in a postmortem study of bipolar disorder. The function of Gs and Gi alpha subunits has now been shown to be affected by lithium. The present study aimed to determine whether bipolar affective disorder was linked to the Gs-alpha subunit gene which has been mapped to chromosomal region 20q13.2. Linkage analysis utilized the PCR amplification of a portion of the Gs-alpha gene that contains a dinucleotide repeat (CA repeat) polymorphism. Linkage of bipolar disorder and recurrent depression to the Gs-alpha subunit gene was tested using a series of autosomal dominant and recessive models with varying penetrance levels. Additionally, linkage was examined using a series of levels of definitions of affective illness. Close linkage to the Gs-alpha subunit gene was strongly excluded using each model and definition. Thus, our study indicates that a genetic defect in the Gs-alpha subunit gene is unlikely to be the cause of bipolar disorder.
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Affiliation(s)
- F Le
- Garvan Institute of Medical Research, St Vincent's Hospital, Sydney, N.S.W., Australia
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Mitchell P, Waters B, Vivero C, Le F, Donald J, Tully M, Campedelli K, Lannfelt L, Sokoloff P, Shine J. Exclusion of close linkage of bipolar disorder to the dopamine D3 receptor gene in nine Australian pedigrees. J Affect Disord 1993; 27:213-24. [PMID: 8509522 DOI: 10.1016/0165-0327(93)90045-l] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [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: 01/31/2023]
Abstract
The recently cloned dopamine D3 receptor (DRD3) gene is of potential relevance to the aetiology of bipolar disorder because of an almost exclusive expression in limbic tissue, the region of the brain putatively responsible for control of emotion. We therefore aimed to determine whether bipolar disorder in nine pedigrees (with 171 members) was linked to this receptor gene, which has been mapped to chromosomal region 3q 13.3. Linkage of bipolar disorder and recurrent depression to the DRD3 gene was tested using a series of autosomal dominant and recessive models with varying penetrance levels. Additionally, linkage was examined using a series of levels of definitions of affective illness (ranging from bipolar I alone to all affective disorders). Close linkage to the DRD3 gene was strongly excluded using each model and definition, and these conclusions persisted when a wide range of rates of 'sporadic' (non-genetic) presentations of illness were incorporated in the analysis.
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Affiliation(s)
- P Mitchell
- School of Psychiatry, University of New South Wales, Sydney, Australia
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Le F, Wilce PA, Hume DA, Shanley BC. Involvement of gamma-aminobutyric acid and N-methyl-D-aspartate receptors in the inhibitory effect of ethanol on pentylenetetrazole-induced c-fos expression in rat brain. J Neurochem 1992; 59:1309-15. [PMID: 1328519 DOI: 10.1111/j.1471-4159.1992.tb08442.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The expression of c-fos mRNA in rat brain was induced by intraperitoneal administration of pentylenetetrazole (PTZ) and picrotoxin, which act on the picrotoxin binding site of the gamma-aminobutyric acid-benzodiazepine (GABA-BZ) receptor complex, by N-methyl-D-aspartate (NMDA) and kainic acid, agonists of different classes of glutamate receptors and by caffeine, an antagonist of adenosine receptors. The actions of PTZ and picrotoxin but not that of NMDA were blocked by ethanol and the NMDA-receptor antagonist, MK-801. Ro 15-4513 partially reversed the inhibitory effect of ethanol on PTZ-induced c-fos mRNA synthesis. Acute ethanol administration blocked the actions of PTZ and NMDA without affecting the response to kainic acid or caffeine. Taken together, these data suggest that ethanol blocks c-fos gene activation by noncompetitive antagonists of the GABA-BZ receptor via actions on both the NMDA and GABA receptors.
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Affiliation(s)
- F Le
- Department of Biochemistry, University of Queensland, Australia
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Fouchard J, Le F, Py A, Guérin F. [Isolated atrial fibrillation. The risk of embolism and its prevention]. Presse Med 1992; 21:1117-22. [PMID: 1387952] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Whether or not atrial fibrillation is alone, if not idiopathic, is difficult to determine. The risk of embolization in lone atrial fibrillation is distinctly higher in healthy subjects over 60 years of age when the left atrium is dilated. In chronic atrial fibrillation this risk is higher than in paroxysmal fibrillation, especially within the year following the onset of the arrhythmia. In most patients anticoagulant therapy is effective in the primary or secondary prevention of embolic accidents. In subjects older than 75 aspirin given in daily doses of 325 mg seems to give similar results. The risk of antithrombosis therapy must not be underevaluated. The alternative is to maintain or restore the sinus rhythm, even at an advanced age, if the arrhythmia is recent and the left atrium is moderately dilated.
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Affiliation(s)
- J Fouchard
- Service des Maladies cardiovasculaires, Hôpital Cochin, Paris
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Abstract
The effect of acute ethanol administration on pentylenetetrazole-induced c-fos expression in rat brain was studied. Pentylenetetrazole induced the rapid and transient expression of c-fos mRNA in rat brain. Maximal induction at a dose of 30 mg/kg was detected within 30 min and persisted for 60 min. Thereafter c-fos gene expression decreased to control levels by 180 min. No increase in c-fos mRNA was evident at doses of pentylenetetrazole less than or equal to 20 mg/kg, whereas maximal elevation was seen at 30 to 40 mg/kg. This action was inhibited by acute ethanol treatment (blood alcohol level greater than or equal to 100 mg/dl). Acute ethanol treatment alone had no effect on c-fos gene expression.
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Affiliation(s)
- F Le
- Department of Biochemistry, University of Queensland, Australia
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Le F, Zhou TC. [Epidermal growth factor receptor and its mutant properties]. Sheng Li Ke Xue Jin Zhan 1989; 20:206-9. [PMID: 2692159] [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: 01/02/2023]
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Le F, Zhang ZG, Zhou TC. [Chemical modification showing the difference between central- and peripheral-type benzodiazepine receptors]. Zhongguo Yao Li Xue Bao 1988; 9:289-92. [PMID: 2848392] [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: 01/02/2023]
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Le F, Zhang ZG, Zhou TC. [Study on the binding area of benzodiazepine receptors by chemical modification]. Zhongguo Yao Li Xue Bao 1987; 8:293-7. [PMID: 2833066] [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: 01/02/2023]
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