18 results on '"H. Fitzsimons"'
Search Results
2. Break Lima
- Author
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A H FITZSIMONS and A H FITZSIMONS
- Subjects
- Human experimentation in medicine--Great Britain, Torture--Government policy--Great Britain, Military interrogation--Government policy--Great Britain
- Abstract
Following the terrorist attacks of September 11, 2001, the CIA contracted two psychologists, James Elmer Mitchell and Bruce Jessen, to develop alternative, harsh interrogation techniques. The psychologists recommended use of the Air Force's Survival Evasion Resistance Escape (SERE) counter-interrogation training, reverse-engineered to obtain intelligence from captives. Their recommendations resulted in the formation of enhanced interrogation techniques which included waterboarding, hypothermia and stress positions. These techniques were employed routinely on terror suspects by the Bush administration. They were subsequently deemed unacceptable, as they were clearly methods of torture, comparisons being made to the Gestapo interrogation method called'Verschärfte Vernehmung'.Eight years prior to the September 11 attacks, with no sign of an end to the troubles in Northern Ireland, British Military Intelligence conducted an experiment designed to obtain information without the use of recognized methods of torture. The objective of the experiment was to subject a military volunteer to prolonged extreme stress, effectively breaking their self-esteem and facilitating the surrender of information. The findings were never published. The sole recommendation was that any experiment of this nature would not be repeated.This is the story of what took place.
- Published
- 2014
3. Soluble adhesion molecules (E-selectin, ICAM-1 and VCAM-1) in breast carcinoma
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D.M O'Hanlon, S. Tormey, H.F. Given, J Lynch, H Fitzsimons, and Carmel Malone
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Cancer Research ,Pathology ,medicine.medical_specialty ,Intercellular Adhesion Molecule-1 ,Vascular Cell Adhesion Molecule-1 ,Breast Neoplasms ,chemistry.chemical_compound ,E-selectin ,Biomarkers, Tumor ,medicine ,Humans ,VCAM-1 ,Cell adhesion ,Neoplasm Staging ,biology ,Cell adhesion molecule ,Adhesion ,Prognosis ,medicine.disease ,Survival Analysis ,Oncology ,chemistry ,Cancer research ,biology.protein ,Female ,Breast disease ,E-Selectin ,Breast carcinoma - Abstract
Adhesion molecules are important in cell-cell and cell-basement membrane interactions. They are intimately involved in inflammatory reactions and a role in tumour progression has been postulated. E-selectin, intercellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-1 (VCAM-1) play a role in cell adhesion to the vascular endothelium, and may have a role in tumour cell dissemination. Soluble forms of these molecules have been described and this study was established to examine these adhesion molecules in patients with breast carcinoma. Serum was obtained from 92 patients with breast carcinoma and 31 age-matched patients with benign breast disease. All samples were obtained prior to surgery. Soluble levels of E-selectin, ICAM-1, and VCAM-1 were significantly elevated in patients with Stage 4 disease compared with controls. (E-selectin 88.6 (47.9) versus 51.4 (18.4) ng/ml; P
- Published
- 2002
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4. Sylvester o’halloran surgical scientific meeting
- Author
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G. J. Fulton, M. G. Davies, P. O’Hagen, A. Rasheed, C. Kelly, E. Kay, S. Fitzgerald, D. Bouchier-Hayes, A. Leahy, F. Fennessy, P. Fitzgerald, K. Khosraviani, H. P. Weir, K. Williamson, R. Wilson, R. J. Moorehead, B. J. Rowlands, D. Morrissey, J. O’Connell, D. Lynch, C. O’Sullivan, F. Shanahan, J. K. Collins, J. L. Kelly, C. C. Soberg, A. Lyons, J. A. Mannick, J. A. Lederer, C. Chen, D. J. Bouchier-Hayes, H. Fitzsimons, D. M. O’Hanlon, C. Curran, M. Canney, S. Morris, O. Clinton, H. F. Given, E. Coveney, H. K. Lyerly, F. L. Murphy, C. J. Kelly, D. H. Osborne, P. Kelly, D. S. O’Riordan, P. G. Horgan, F. B. V. Keane, W. A. Tanner, P. Kilmartin, C. P. Delaney, S. M. Johnston, J. M. Fitzpatrick, T. F. Gorey, J. Mehigan, M. G. O/rsRiordan, N. Shines, A. Hill, C. O. McDonnell, F. Murphy, S. M. Javadpour, Y. Alhadi, R. Waldron, R. G. Watson, A. Tarrant, T. K. Neelamekam, J. Mathias, J. Geoghegan, T. Boyle, O. Traynor, S. Hayes, B. O’Donovan, N. Ajmal, J. McCann, N. T. Corrigan, M. G. O’Riordan, P. Ross, M. O’Donohoe, M. Bresnihan, T. M. Feeley, C. Fiuza-Castineira, D. Coleman, H. Fisher, A. Butt, E. Ghumman, P. Grace, P. Burke, S. A. Martin, M. K. Fox-Talbot, P. A. Lipsett, K. D. Lillemoe, H. A. Pitt, D. A. O’Keeffe, A. D. K. Hill, K. Sheahan, F. Ryan, D. Barton, R. Fitzgerald, E. W. McDermott, N. J. O’Higgins, E. Kavanagh, P. Kiely, D. O’Driscoll, M. Ramesh, W. O. Kirwan, D. C. Winter, K. Nally, J. O’Callaghan, J. B. Matthews, B. J. Harvey, G. C. O’Sullivan, L. S. Young, M. C. Regan, P. Sweeney, D. M. Bouchier-Hayes, R. Dardis, P. Broe, M. G. O’Brien, P. Neary, P. Ridgeway, C. Condron, J. H. Wang, H. P. Redmond, D. R. M. Redfern, R. K. S. Strachan, J. M. Hollingdale, P. A. Grace, A. Acheson, A. Graham, C. Weir, B. Lee, C. O’Donnell, D. Buckley, J. A. O’Donnell, E. Purcell, M. O’Donoghue, S. Sultan, M. Colgan, M. Molloy, D. Moore, G. Shanik, P. T. McCollum, Z. Raza, S. Naidu, P. A. Stonebridge, M. P. Colgan, D. J. Moore, D. G. Shanik, J. Dowdall, C. Williams, S. G. Shering, G. Duffy, R. Greengrass, D. Iglehart, G. Little, H. Kim Lyerly, M. Fynes, A. Cahill, C. O’Herlihy, P. R. O’Connell, I. Ahmad, M. Etisham, J. Drumm, H. Flood, K. Mulhall, K. Murray, S. O’Rian, N. Garvey, J. Johnston, G. T. McGreal, M. P. Brady, M. M. Duffy, M. Regan, M. G. Harrington, M. Javadpour, C. McDonnell, E. Eguare, M. C. Barry, G. C. O’Toole, N. O’Higgins, E. McDermott, C. M. Brady, S. A. Sultan, M. K. O’Donoghue, M. P. Molloy, G. D. Shanik, R. J. Holdsworth, M. Fehily, C. Doran, F. Keane, J. F. Rothwell, M. J. Staunton, L. O’Mahony, E. F. Gaffney, K. Mealy, T. P. J. Hennessy, and J. Geibel
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business.industry ,Art history ,Medicine ,General Medicine ,business - Published
- 1998
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5. Correlates of Staff Acceptability of a Novel Telemedicine-Delivered Medications for Opioid Use Disorder Program in a Rural Detention Center.
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Belcher AM, Kearley B, Kruis N, Rowland N, Spicyn N, Cole TO, Welsh C, Fitzsimons H, McLean K, and Weintraub E
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- Humans, Male, Female, Adult, Rural Population, Opiate Substitution Treatment methods, Narcotic Antagonists administration & dosage, Narcotic Antagonists therapeutic use, Attitude of Health Personnel, Jails, Middle Aged, Prisons organization & administration, Opioid-Related Disorders drug therapy, Telemedicine
- Abstract
Opioid overdose death is significantly increased immediately following incarceration. Evidence-based medications are underutilized in rural jails and detention centers. We have reported our efforts to address this gap through telemedicine-based medications for opioid use disorder treatment (tele-MOUD) for incarcerated patients. Staff acceptance and perceptions are critically important factors in the assurance of program validation. We assessed tele-MOUD acceptability and perceptions of effectiveness and stigma in one detention center. Overall, we found that jail staff's general acceptability of the program was rather low, as was perceived effectiveness of MOUD, while stigmatizing beliefs were present. Furthermore, tele-MOUD acceptability was positively correlated with perceptions of MOUD effectiveness and negatively correlated with stigmatizing notions of MOUD ( p ' s < 0.001). Findings suggest the need for educational interventions. Future research investigating the potential moderating effects of training on staff acceptability of jail-based tele-MOUD will support the implementation and sustainability of these life-saving programs.
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- 2024
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6. The impact of chronic pain and depression on medication for opioid use disorder treatment: A mixed-methods analysis.
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Kacmarek CN, Smith HC, Kuehn M, Bennett ME, Belcher A, Fitzsimons H, Hall W, Greenblatt A, Li L, and Travaglini LE
- Abstract
Background: Opioid use disorder (OUD) is associated with significant morbidity and mortality. Medication for opioid use disorder (MOUD) is a cost-effective treatment, but retention rates vary widely., Aim: Mixed methods studies are needed to better understand how depression and pain impact the experience of OUD and MOUD treatment experiences., Methods: Participants were recruited from an urban addiction treatment center in the United States. Along with demographic characteristics, current pain severity, pain interference, pain catastrophizing, and depression were assessed via self-report. Correlational analyses, multivariable logistic regression models, Fisher exact tests, and Wilcoxon signed rank tests were used to examine the impact of demographic characteristics, physical pain, and depression on multiple treatment outcomes: 90-day treatment engagement (total number of dispensed MOUD doses), retention (yes/no still in treatment at 90 days), and opioid use (positive/negative urinalysis for opioids at 90 days). Ten participants were interviewed about their history with physical pain, depression, opioid use, and OUD treatment experiences. Themes were identified using a rapid analysis, top-down approach., Results: Fifty participants enrolled in the study and received buprenorphine (12%) or methadone (88%). Older age was associated with 90-day treatment engagement. Higher depression scores were associated with a positive opioid urinalysis at 90-day follow-up. In interviews, participants reported experiencing chronic physical pain and depression before and during their OUD and an interest in addressing mental and physical health in addiction treatment., Conclusions: Addressing co-occurring physical and mental health concerns during MOUD treatment has the potential to improve the treatment experience and abstinence from opioids., Competing Interests: Conflict of interest All authors do not have any financial relationships with commercial interests to report.
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- 2024
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7. The Impact of Early Substance Use Disorder Treatment Response on Treatment Outcomes Among Pregnant Women With Primary Opioid Use.
- Author
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Tuten M, Fitzsimons H, Hochheimer M, Jones HE, and Chisolm MS
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- Adolescent, Adult, Cocaine-Related Disorders therapy, Educational Status, Female, Gestational Age, Humans, Middle Aged, Opioid-Related Disorders therapy, Pregnancy, Pregnancy Complications therapy, Young Adult, Outcome Assessment, Health Care statistics & numerical data, Patient Acceptance of Health Care statistics & numerical data, Substance-Related Disorders therapy
- Abstract
Objectives: This study examined the impact of early patient response on treatment utilization and substance use among pregnant participants enrolled in substance use disorder (SUD) treatment., Methods: Treatment responders (TRs) and treatment nonresponders (TNRs) were compared on pretreatment and treatment measures. Regression models predicted treatment utilization and substance use., Results: TR participants attended more treatment and had lower rates of substance use relative to TNR participants. Regression models for treatment utilization and substance use were significant. Maternal estimated gestational age (EGA) and baseline cocaine use were negatively associated with treatment attendance. Medication-assisted treatment, early treatment response, and baseline SUD treatment were positively associated with treatment attendance. Maternal EGA was negatively associated with counseling attendance; early treatment response was positively associated with counseling attendance. Predictors of any substance use at 1 month were maternal education, EGA, early treatment nonresponse, and baseline cocaine use. The single predictor of any substance use at 2 months was early treatment nonresponse. Predictors of opioid use at 1 month were maternal education, EGA, early treatment nonresponse, and baseline SUD treatment. Predictors of opioid use at 2 months were early treatment nonresponse, and baseline cocaine and marijuana use. Predictors of cocaine use at 1 month were early treatment nonresponse, baseline cocaine use, and baseline SUD treatment. Predictors of cocaine use at 2 months were early treatment nonresponse and baseline cocaine use., Conclusions: Early treatment response predicts more favorable maternal treatment utilization and substance use outcomes. Treatment providers should implement interventions to maximize patient early response to treatment.
- Published
- 2018
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8. Enhancing patient navigation to improve intervention session attendance and viral load suppression of persons with HIV and substance use: a secondary post hoc analysis of the Project HOPE study.
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Stitzer M, Matheson T, Cunningham C, Sorensen JL, Feaster DJ, Gooden L, Hammond AS, Fitzsimons H, and Metsch LR
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- Humans, HIV Infections epidemiology, Motivation, Patient Navigation organization & administration, Substance-Related Disorders epidemiology, Viral Load
- Abstract
Background: Interventions are needed to improve viral suppression rates among persons with HIV and substance use. A 3-arm randomized multi-site study (Metsch et al. in JAMA 316:156-70, 2016) was conducted to evaluate the effect on HIV outcomes of usual care referral to HIV and substance use services (N = 253) versus patient navigation delivered alone (PN: N = 266) or together with contingency management (PN + CM; N = 271) that provided financial incentives targeting potential behavioral mediators of viral load suppression., Aims: This secondary analysis evaluates the effects of financial incentives on attendance at PN sessions and the relationship between session attendance and viral load suppression at end of the intervention., Methods: Frequency of sessions attended was analyzed over time and by distribution of individual session attendance frequency (PN vs PN + CM). Percent virally suppressed (≤200 copies/mL) at 6 months was compared for low, medium and high rate attenders. In PN + CM a total of $220 could be earned for attendance at 11 PN sessions over the 6-month intervention with payments ranging from $10 to $30 under an escalating schedule., Results: The majority (74%) of PN-only participants attended 6 or more sessions but only 28% attended 10 or more and 16% attended all eleven sessions. In contrast, 90% of PN + CM attended 6 or more visits, 69% attended 10 or more and 57% attended all eleven sessions (attendance distribution χ
2 [11] = 105.81; p < .0001). Overall (PN and PN + CM participants combined) percent with viral load suppression at 6-months was 15, 38 and 54% among those who attended 0-5, 6-9 and 10-11 visits, respectively (χ2 (2) = 39.07, p < .001)., Conclusion: In this secondary post hoc analysis, contact with patient navigators was increased by attendance incentives. Higher rates of attendance at patient navigation sessions was associated with viral suppression at the 6-month follow-up assessment. Study results support use of attendance incentives to improve rates of contact between service providers and patients, particularly patients who are difficult to engage in care. Trial Registration clinicaltrials.govIdentifier: NCT01612169.- Published
- 2017
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9. Clinician-delivered contingency management increases engagement and attendance in drug and alcohol treatment.
- Author
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Fitzsimons H, Tuten M, Borsuk C, Lookatch S, and Hanks L
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- Adult, Female, Humans, Male, Middle Aged, Motivation, Reinforcement, Psychology, Treatment Outcome, Behavior Therapy methods, Patient Compliance psychology, Substance-Related Disorders psychology, Substance-Related Disorders therapy
- Abstract
Objective: This study examined the impact of a low-cost contingency management (CM) delivered by program clinicians on treatment attendance and utilization for patients enrolled in outpatient psychosocial substance abuse treatment., Methods: The study used a pre-posttest design to compare substance abuse patients who received Reinforcement-Based Treatment (RBT) plus low cost CM (n=130; RBT+CM) to patients who received RBT only (n=132, RBT). RBT+CM participants received a $10 incentive for returning to treatment the day following intake assessment (day one), and a $15 incentive for attending treatment on day five following admission. RBT clients received standard care intervention without the addition of the CM procedures. Groups were compared on proportion of participants who returned to treatment on day one, mean days of treatment attendance, individual sessions attended, and treatment utilization during the first week and the first month following treatment admission., Results: Both the RBT+CM and RBT group participants returned to the clinic on day one at high rates (95% versus 89%, respectively). However, the RBT group participants were more likely to attend the intake assessment only (i.e., never return to treatment) compared to the RBT+CM participants. Additionally, the RBT+CM participants attended significantly more treatment days, attended more individual counseling sessions, and had higher rates of overall treatment utilization compared to the RBT participants during the one week and one month following treatment admission., Conclusions: Findings support the feasibility and effectiveness of a CM intervention delivered by clinicians for increasing treatment attendance and utilization in a community substance abuse program., (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)
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- 2015
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10. A comparison of cigarette smoking profiles in opioid-dependent pregnant patients receiving methadone or buprenorphine.
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Chisolm MS, Fitzsimons H, Leoutsakos JM, Acquavita SP, Heil SH, Wilson-Murphy M, Tuten M, Kaltenbach K, Martin PR, Winklbaur B, Jansson LM, and Jones HE
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- Adolescent, Adult, Female, Humans, Opiate Substitution Treatment methods, Opioid-Related Disorders psychology, Pregnancy, Smoking adverse effects, Young Adult, Buprenorphine therapeutic use, Methadone therapeutic use, Opioid-Related Disorders drug therapy, Smoking psychology
- Abstract
Introduction: Little is known about the relationship between cigarette smoking and agonist treatment in opioid-dependent pregnant patients. The objective of this study is to examine the extent to which cigarette smoking profiles differentially changed during the course of pregnancy in opioid-dependent patients receiving either double-blind methadone or buprenorphine. Patients were participants in the international, randomized controlled Maternal Opioid Treatment: Human Experimental Research (MOTHER) study., Methods: A sample of opioid-maintained pregnant patients (18-41 years old) with available smoking data who completed a multisite, double-blind, double-dummy, randomized controlled trial of methadone (n = 67) and buprenorphine (n = 57) between 2005 and 2008. Participants were compared on smoking variables based on opioid agonist treatment condition., Results: Overall, 95% of the sample reported cigarette smoking at treatment entry. Participants in the two medication conditions were similar on pretreatment characteristics including smoking rates and daily cigarette amounts. Over the course of the pregnancy, no meaningful changes in cigarette smoking were observed for either medication condition. The fitted difference in change in adjusted cigarettes per day between the two conditions was small and nonsignificant (β = -0.08, SE = 0.05, p = .132)., Conclusions: Results support high rates of smoking with little change during pregnancy among opioid-dependent patients, regardless of the type of agonist medication received. These findings are consistent with evidence that suggests nicotine effects, and interactions may be similar for buprenorphine compared with methadone. The outcomes further highlight that aggressive efforts are needed to reduce/eliminate smoking in opioid-dependent pregnant women.
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- 2013
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11. Contingent incentives reduce cigarette smoking among pregnant, methadone-maintained women: results of an initial feasibility and efficacy randomized clinical trial.
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Tuten M, Fitzsimons H, Chisolm MS, Nuzzo PA, and Jones HE
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- Adult, Behavior Therapy methods, Carbon Monoxide blood, Feasibility Studies, Female, Humans, Methadone therapeutic use, Narcotics therapeutic use, Pilot Projects, Pregnancy, Pregnancy Complications psychology, Secondary Prevention, Smoking psychology, Smoking Cessation psychology, Treatment Outcome, Motivation, Pregnancy Complications prevention & control, Smoking Cessation methods, Smoking Prevention, Substance-Related Disorders rehabilitation
- Abstract
Aims: This study examined the feasibility and efficacy of behavioral incentives for reducing cigarette smoking among pregnant methadone-maintained patients., Design: Participants (n = 102) were assigned randomly to: (i) contingent behavioral incentives (CBI: n = 42); (ii) non-contingent behavioral incentives (NCBI: n = 28); or (iii) treatment as usual (TAU: n = 32)., Setting: Study procedures were implemented at the Center for Addiction and Pregnancy in Baltimore, MD., Participants: Study participants were pregnant, methadone-maintained women enrolled in substance use disorder treatment., Measurements: Baseline carbon monoxide (CO) levels were calculated for each participant. Subsequently, breath samples were tested three times weekly to measure changes in smoking behavior. CBI participants received incentives for target reductions from baseline: any reduction (week 1); 10% reduction (weeks 2-4), 25% reduction (weeks 5-7), 50% reduction (weeks 8-9), 75% reduction (week 10-11); and abstinence [CO < 4 parts per million (p.p.m.)] (week 12 until delivery). NCBI participants received incentives independent of smoking CO measurement results. TAU participants received no incentives, the standard treatment at the program., Findings: CBI condition participants submitted significantly lower mean CO values than the NCBI and TAU conditions over the course of the intervention (P < 0.0001). Nearly half (48%) of the CBI participants met the 75% smoking reduction target and one-third (31%) met the abstinence target at week 12. In contrast, none of the NCBI met either the 75% or abstinence targets. Only 2% of the TAU participants met the 75% reduction and none of the TAU participants met the abstinence targets. These smoking behavior reductions did not yield significant differences in birth outcomes., Conclusions: Cigarette smoking may be reduced significantly among pregnant, methadone-maintained women through the use of contingent reinforcement for gradual reductions in breath carbon monoxide levels., (Published 2012. This article is a U.S. Government work and is in the public domain in the USA.)
- Published
- 2012
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12. Comparing methadone and buprenorphine maintenance with methadone-assisted withdrawal for the treatment of opioid dependence during pregnancy: maternal and neonatal outcomes.
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Lund IO, Fitzsimons H, Tuten M, Chisolm MS, O'Grady KE, and Jones HE
- Abstract
Pregnancy can motivate opioid-dependent women to seek substance abuse treatment. Research has demonstrated that although prenatal exposure to buprenorphine results in less severe neonatal abstinence syndrome (NAS) relative to prenatal methadone exposure, the maternal and other neonatal outcomes are similar for the two medications. Maternal and neonatal outcomes for opioid-dependent pregnant women receiving these medications have not been systematically ompared with methadone-assisted withdrawal. The present study provides an initial assessment of the relative efficacy of both methadone and buprenorphine maintenance versus methadone-assisted withdrawal in terms of neonatal and maternal delivery outcomes. Data were derived from (1) the MOTHER (Maternal Opioid Treatment: Human Experimental Research) study at the Johns Hopkins University Bayview Medical Center (JHBMC), or (2) retrospective records review of women who underwent methadone-assisted withdrawal at the JHBMC during the time period in which participants were enrolled in the MOTHER study. Compared with the methadone maintenance group, the methadone-assisted withdrawal group had a significantly lower mean NAS peak score (Means = 13.7 vs 7.0; P = 0.002), required a significantly lower mean amount of morphine to treat NAS (Means = 82.8 vs 0.2; P < 0.001), had significantly fewer days medicated for NAS (Means = 31.5 vs 3.9; P < 0.001), and remained in the hospital for a significantly fewer number of days, on average (Means = 24.2 vs 7.0; P < 0.019). Compared with the buprenorphine maintenance group, the methadone-assisted withdrawal group required a significantly lower mean amount of morphine to treat NAS (Means = 8.2 vs 0.2; P < 0.001) and significantly fewer days medicated for NAS (Means = 12.0 vs 3.9; P = 0.008). Findings suggest that it is possible for some opioid-dependent pregnant women to succeed with methadone-assisted withdrawal. Future research needs to more fully evaluate the potential benefits and risks of methadone-assisted withdrawal for the maternal-fetal dyad.
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- 2012
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13. Anticonvulsant effects and behavioural outcomes of rAAV serotype 1 vector-mediated neuropeptide Y overexpression in rat hippocampus.
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Noe F, Vaghi V, Balducci C, Fitzsimons H, Bland R, Zardoni D, Sperk G, Carli M, During MJ, and Vezzani A
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- Actins genetics, Animals, Dependovirus, Epilepsy, Temporal Lobe physiopathology, Genetic Vectors, Immunity, Humoral, Kainic Acid adverse effects, Learning, Male, Memory, Motor Activity, Promoter Regions, Genetic, Rats, Rats, Sprague-Dawley, Seizures physiopathology, Epilepsy, Temporal Lobe therapy, Genetic Therapy methods, Hippocampus metabolism, Neuropeptide Y genetics, Seizures therapy, Transduction, Genetic methods
- Abstract
Neuropeptide Y (NPY) is an endogenous peptide with powerful anticonvulsant properties. Its overexpression in the rat hippocampus, mediated by the local application of recombinant adeno-associated viral (rAAV) vectors carrying the human NPY gene, results in significant reduction of seizures in acute and chronic seizure models. In this study, we characterized a more efficient rAAV-NPY vector to improve cell transfection in the injected area. The changes included pseudotyping with the AAV vector serotype 1 (rAAV1), and using the strong constitutive hybrid CBA promoter, which contains a cytomegalovirus enhancer and chicken beta-actin promoter sequences. We compared NPY expression and the associated anticonvulsant effects of this new vector, with those mediated by the former rAAV vector with chimeric serotype 1/2 (rAAV1/2). In addition, we investigated whether rAAV serotype 1 vector-mediated chronic NPY overexpression causes behavioural deficits that may detract from the clinical utility of this therapeutic approach. We report that rAAV-NPY serotype 1 vector has significantly improved anticonvulsant activity when compared with serotype 1/2 vector, as assessed by measuring EEG seizure activity in kainic acid treated rats. rAAV1-mediated NPY overexpression in naive rats did not result in alterations of physiological functions such as learning and memory, anxiety and locomotor activity. In addition, we did not observe glia activation, or humoral immune responses against serotype 1 vector, which could inactivate gene expression. Our findings show that rAAV1-NPY vector with the CBA promoter mediates powerful anticonvulsant effects and seems to be safe in rodents, thus it may be considered a vector of choice for possible clinical applications.
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- 2010
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14. Neuropeptide Y overexpression using recombinant adeno-associated viral vectors.
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Noé F, Frasca A, Balducci C, Carli M, Sperk G, Ferraguti F, Pitkänen A, Bland R, Fitzsimons H, During M, and Vezzani A
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- Animals, DNA, Recombinant, Humans, Neuropeptide Y genetics, Adenoviridae genetics, Epilepsy therapy, Genetic Therapy methods, Genetic Vectors, Neuropeptide Y metabolism
- Abstract
Gene therapy may represent a promising alternative treatment of epileptic patients who are resistant to conventional anti-epileptic drugs. Among the various approaches for the application of gene therapy in the treatment of CNS disorders, recombinant adeno-associated viral (AAV) vectors have been most widely used. Preclinical studies using a selection of "therapeutic" genes injected into the rodent brain to correct the compromised balance between inhibitory and excitatory transmission in epilepsy, showed significant reduction of seizures and inhibition of epileptogenesis. In particular, transduction of neuropeptide genes, such as galanin and neuropeptide Y (NPY) in specific brain areas in experimental models of seizures resulted in significant anticonvulsant effects. Recent findings showed a long-lasting NPY over-expression in the rat hippocampus by local application of recombinant AAV vectors associated with reduced generalization of seizures, delayed kindling epileptogenesis, and strong reduction of chronic spontaneous seizures. These results establish a proof-of-principle evidence of the efficacy of gene therapy as anticonvulsant treatment. Additional investigations are required to address safety concerns and possible side effects in more detail.
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- 2009
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15. The impact of mood disorders on the delivery and neonatal outcomes of methadone-maintained pregnant patients.
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Tuten M, Heil SH, O'Grady KE, Fitzsimons H, Chisolm MS, and Jones HE
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- Adult, Analysis of Variance, Chi-Square Distribution, Diagnosis, Dual (Psychiatry), Female, Genital Diseases, Female, Humans, Infant, Newborn, Length of Stay, Maternal-Fetal Exchange, Narcotics therapeutic use, Patient Selection, Pregnancy, Treatment Outcome, Methadone therapeutic use, Mood Disorders complications, Opioid-Related Disorders complications, Opioid-Related Disorders drug therapy, Pregnancy Outcome
- Abstract
Methadone-maintained pregnant patients with mood disorders have compromised treatment outcomes ( [1] ). This study examined the relationship between the presence of mood disorders and delivery and neonatal outcomes. Participants were categorized into two groups: no current mood disorder (n = 30) or primary mood disorder (n = 38). The mood disorder group reported more serious lifetime and current depression than did the no current mood disorder group. Neonates from mothers with mood disorders had a longer length of stay in the neonatal intensive care unit than the no current mood disorder group. Findings emphasize the need to treat mood disorders in methadone-maintained pregnant patients.
- Published
- 2009
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16. Subthalamic glutamic acid decarboxylase gene therapy: changes in motor function and cortical metabolism.
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Emborg ME, Carbon M, Holden JE, During MJ, Ma Y, Tang C, Moirano J, Fitzsimons H, Roitberg BZ, Tuccar E, Roberts A, Kaplitt MG, and Eidelberg D
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- Animals, Dependovirus genetics, Female, Genetic Vectors, Macaca mulatta, Motor Activity physiology, Positron-Emission Tomography, Subthalamic Nucleus metabolism, Transfection, Genetic Therapy, Glutamate Decarboxylase genetics, Parkinsonian Disorders therapy, Subthalamic Nucleus pathology
- Abstract
Parkinson's disease (PD) is associated with increased excitatory activity within the subthalamic nucleus (STN). We sought to inhibit STN output in hemiparkinsonian macaques by transfection with adeno-associated virus (AAV) containing the gene for glutamic acid decarboxylase (GAD). In total, 13 macaques were rendered hemiparkinsonian by right intracarotid 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine injection. Seven animals were injected with AAV-GAD into the right STN, and six received an AAV gene for green fluorescent protein (GFP). Videotaped motor ratings were performed in a masked fashion on a weekly basis over a 55-week period. At 56 weeks, the animals were scanned with (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET). Histological examination was performed at the end of the study. No adverse events were observed after STN gene therapy. We found that the clinical rating scores for the two treatment groups had different patterns of change over time (group x time interaction, P<0.001). On FDG PET, the GAD animals exhibited an increase in glucose utilization in the right motor cortex relative to GFP controls (P<0.001). Metabolism in this region correlated with clinical ratings at end point (P<0.01). Histology confirmed GAD expression in treated animals. These findings suggest that STN AAV-GAD is well tolerated and potentially effective in a primate model of PD. The changes in motor cortical glucose utilization observed after gene therapy are consistent with the modulation of metabolic brain networks associated with this disorder.
- Published
- 2007
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17. Quantitative comparison of expression with adeno-associated virus (AAV-2) brain-specific gene cassettes.
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Xu R, Janson CG, Mastakov M, Lawlor P, Young D, Mouravlev A, Fitzsimons H, Choi KL, Ma H, Dragunow M, Leone P, Chen Q, Dicker B, and During MJ
- Subjects
- Animals, Blotting, Southern methods, Blotting, Western methods, Cells, Cultured, Gene Expression, Genetic Vectors administration & dosage, Injections, Rats, Rats, Wistar, Brain enzymology, Dependovirus genetics, Genetic Therapy methods, Genetic Vectors genetics, Luciferases genetics
- Abstract
This study compared a range of mammalian CNS expression cassettes in recombinant adeno-associated virus (AAV-2) vectors using strong endogenous promoter sequences, with or without a strong post-regulatory element and polyadenylation signal. Changes in these elements led to transgene expression varying by over three orders of magnitude. In experiments conducted in primary cell culture and in >100 stereotactically injected rats, we observed highly efficient and stable (>15 months) gene expression in neurons and limited expression in glia; the highest expression occurred with endogenous, nonviral promoters such as neuron-specific enolase and beta-actin. The packaging size of AAV-2 was maximized at 5.7 kb without impairing gene expression, as judged by direct comparison with a number of smaller AAV-2 constructs. The genomic insert size and titer were confirmed by Southern blot and quantitative PCR, and infectivity was tested by particle titer using ELISA with a conformation-dependent epitope that requires the full intact capsid. A packaging and purification protocol we describe allows for high-titer, high-capacity AAV-2 vectors that can transduce over 2 x 10(5) neurons in vivo per microliter of vector, using the strongest expression cassette.
- Published
- 2001
- Full Text
- View/download PDF
18. Combined injection of rAAV with mannitol enhances gene expression in the rat brain.
- Author
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Mastakov MY, Baer K, Xu R, Fitzsimons H, and During MJ
- Subjects
- Animals, CD4 Antigens metabolism, CD8 Antigens metabolism, Enzyme-Linked Immunosorbent Assay, Immunohistochemistry, Lectins metabolism, Luciferases metabolism, Male, Models, Genetic, Perfusion, Plasmids metabolism, Rats, Rats, Wistar, Transduction, Genetic, Brain metabolism, Dependovirus genetics, Diuretics, Osmotic therapeutic use, Gene Expression, Gene Transfer Techniques, Genetic Therapy methods, Mannitol therapeutic use
- Abstract
Recombinant adeno-associated viruses (rAAV) are highly efficient vectors for gene transfer into the central nervous system (CNS). However, a major hurdle for gene delivery to the mammalian brain is to achieve high-level transduction in target cells beyond the immediate injection site. Therefore, in addition to improvements in expression cassettes and viral titers, optimal injection parameters need to be defined. Here, we show that previous studies of somatic cell gene transfer to the mammalian brain have used suboptimal injection parameters, with even the lowest reported perfusion rates still excessively fast. Moreover, we evaluated the effect of local administration of mannitol to further enhance transgene expression and vector spread. Ultraslow microperfusion of rAAV, i.e., <33 nl/min, resulted in significantly higher gene expression and less injury of surrounding tissue than the previously reported rates of 100 nl/min or faster. Co-infusion of mannitol facilitated gene transfer to neurons, increasing both the total number and the distribution of transduced cells by 200-300%. Gene transfer studies in the CNS using rAAV should use very slow infusion rates and combined injection with mannitol to maximize transduction efficiency and spread.
- Published
- 2001
- Full Text
- View/download PDF
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