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Chalak A, Haddad J, Jawad M, Nakkash R, M. N, Khader Y, Mostafa A, Abla R, Salloum R. Estimating the impacts of waterpipe tobacco
taxation on demand: Evidence from a
subgroup analysis in Lebanon. Tob Prev Cessat 2022. [DOI: 10.18332/tpc/150961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Pakhale S, Visentin C, Tariq S, Kaur T, Florence K, Bignell T, Jama S, Huynh N, Boyd R, Haddad J, Alvarez GG. Lung disease burden assessment by oscillometry in a systematically disadvantaged urban population experiencing homelessness or at-risk for homelessness in Ottawa, Canada from a prospective observational study. BMC Pulm Med 2022; 22:235. [PMID: 35710334 PMCID: PMC9202668 DOI: 10.1186/s12890-022-02030-x] [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: 10/28/2021] [Accepted: 06/13/2022] [Indexed: 12/02/2022] Open
Abstract
Rationale Oscillometry is an emerging technique that offers some advantages over spirometry as it does not require forced exhalation and may detect early changes in respiratory pathology. Obstructive lung disease disproportionately impacts people experiencing homelessness with a high symptoms burden, yet oscillometry is not studied in this population. Objectives To assess lung disease and symptom burden using oscillometry in people experiencing homelessness or at-risk of homelessness using a community-based participatory action research approach (The Bridge Model™).
Methods Of 80 recruited, 55 completed baseline oscillometry, 64 completed spirometry, and all completed patient-reported outcomes with demographics, health, and respiratory symptom related questionnaires in the Participatory Research in Ottawa: Management and Point-of-Care for Tobacco Dependence project. Using a two-tail t-test, we compared mean oscillometry values for airway resistance (R5–20), reactance area under the curve (Ax) and reactance at 5 Hz (X5) amongst individuals with fixed-ratio method (FEV1/FVC ratio < 0.70) and LLN (FEV1/FVC ratio ≤ LLN) spirometry diagnosed chronic obstructive pulmonary disease (COPD). We compared mean oscillometry parameters based on participants’ COPD assessment test (CAT) scores using ANOVA test. Results There was no significant difference between the pre- and post- bronchodilator values of R5–20 and Ax for the fixed ratio method (p = 0.63 and 0.43) and the LLN method (p = 0.45 and 0.36). There was a significant difference in all three of the oscillometry parameters, R5–20, Ax and X5, based on CAT score (p = 0.009, 0.007 and 0.05, respectively). There was a significant difference in R5–20 and Ax based on the presence of phlegm (p = 0.03 and 0.02, respectively) and the presence of wheeze (p = 0.05 and 0.01, respectively). Oscillometry data did not correlate with spirometry data, but it was associated with CAT scores and correlated with the presence of self-reported symptoms of phlegm and wheeze in this population. Conclusions Oscillometry is associated with respiratory symptom burden and highlights the need for future studies to generate more robust data regarding the use of oscillometry in systematically disadvantaged populations where disease burden is disproportionately higher than the general population. TrialRegistration: ClinicalTrails.gov—NCT03626064, Retrospective registered: August 2018, https://clinicaltrials.gov/ct2/show/NCT03626064
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Affiliation(s)
- Smita Pakhale
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada. .,The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada. .,University of Ottawa, Ottawa, Canada.
| | - Carly Visentin
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.,University of Ottawa, Ottawa, Canada
| | - Saania Tariq
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Tina Kaur
- University of Toronto, Toronto, Canada
| | - Kelly Florence
- Community (Peer) Researcher, The Bridge Engagement Centre, Ottawa, Canada
| | - Ted Bignell
- Community (Peer) Researcher, The Bridge Engagement Centre, Ottawa, Canada
| | - Sadia Jama
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada.,University of Ottawa, Ottawa, Canada
| | - Nina Huynh
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Robert Boyd
- Oasis, Sandy Hill Community Health Centre, Ottawa, Canada
| | - Joanne Haddad
- Canadian Mental Health Association, The Ottawa Branch, Ottawa, Canada
| | - Gonzalo G Alvarez
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.,The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
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3
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Chaaban J, Haddad J, Ghandour L, Chalak A. Impact of minimum unit pricing on youth alcohol consumption: insights from Lebanon. Health Policy Plan 2022; 37:760-770. [PMID: 35353893 DOI: 10.1093/heapol/czac021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 01/21/2022] [Accepted: 03/10/2022] [Indexed: 11/12/2022] Open
Abstract
This paper analyses the impact of introducing an alcohol minimum unit pricing policy on youth's off-premise alcohol consumption. We rely on price elasticities derived using stated preference alcohol purchase data from a survey of 1024 university students in Lebanon. Selectively targeting drinks with high ethanol concentration by applying a minimum unit pricing (MUP) corresponding to the maximum price that respondents are willing to pay per beverage achieves a reduction in ethanol intake close to 0.23 l/month (∼28% of pre-MUP ethanol intake). Imposing a flat MUP corresponding to the average price respondents are willing to pay for all alcoholic beverages decreases ethanol intake by nearly half the reduction from the previous targeted MUP. This work provides evidence in favour of MUP in conjunction with taxation capable of substantially reducing alcohol consumption. We also document a positive welfare benefit of MUP.
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Affiliation(s)
- Jad Chaaban
- Department of Agriculture, Faculty of Agricultural and Food Sciences, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon
| | - Joanne Haddad
- ECARES, Université Libre de Bruxelles, Ave. F.D. Roosevelt 50, CP114/04, Brussels 1050, Belgium
| | - Lilian Ghandour
- Department of Epidemiology and Population Health, Faculty of Agricultural and Food Sciences, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon
| | - Ali Chalak
- Department of Agriculture, Faculty of Agricultural and Food Sciences, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon
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Béland LP, Brodeur A, Haddad J, Mikola D. Determinants of Family Stress and Domestic Violence: Lessons from the COVID-19 Outbreak. Can Public Policy 2021; 47:439-459. [PMID: 36039353 PMCID: PMC9395152 DOI: 10.3138/cpp.2020-119] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this article, we examine Canadians' concerns regarding the impact of coronavirus disease 2019 (COVID-19) on domestic violence and family stress. Our empirical analysis relies on a unique survey conducted online, the Canadian Perspective Survey Series, which allows us to investigate the determinants of concerns regarding family stress and domestic violence during the first COVID-19 lockdown. We find no evidence that changes in work arrangements are related to concerns regarding family stress and violence in the home. In contrast, we find that the inability to meet financial obligations and concerns about maintaining social ties are significantly related to concerns about family stress and domestic violence.
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Affiliation(s)
| | - Abel Brodeur
- Department of Economics, University of Ottawa, Ottawa, Ontario, Canada
| | - Joanne Haddad
- Department of Economics, University of Ottawa, Ottawa, Ontario, Canada
| | - Derek Mikola
- Department of Economics, Carleton University, Ottawa, Ontario, Canada
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5
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Oliveira-Neto OB, Haddad J, Prado FB, Rossi AC, Monte-Bispo RF, Sousa-Rodrigues CF, Olave E, Freire AR. Presence of Complete or Incomplete Septa in Human Jugular Foramens. INT J MORPHOL 2021. [DOI: 10.4067/s0717-95022021000100045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Pakhale S, Tariq S, Huynh N, Jama S, Kaur T, Charron C, Florence K, Nur F, Bustamante-Bawagan ME, Bignell T, Boyd R, Haddad J, Kendzerska T, Alvarez G. Prevalence and burden of obstructive lung disease in the urban poor population of Ottawa, Canada: a community-based mixed-method, observational study. BMC Public Health 2021; 21:183. [PMID: 33478466 PMCID: PMC7819217 DOI: 10.1186/s12889-021-10209-w] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 01/10/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Globally the burden of Obstructive Lung Diseases (OLD) is growing, however its effect on urban poor populations with the high prevalence of tobacco dependence is virtually unknown. The purpose of this project is to estimate the prevalence and burden of OLD in the urban, low-income populations of Ottawa, Canada. METHODS The study presented in this paper was part of the PROMPT (Management and Point-of-Care for Tobacco Dependence) project; a prospective cohort study in a community-based setting (n = 80) with meaningful Patient Engagement from design to dissemination. Spirometry data, standardized questionnaires and semi-structured interviews from PROMPT were interpreted to understand the lung function, disease burden and social determinants (respectively) in this population. RESULTS The prevalence of OLD among those who completed spirometry (N = 64) was 45-59%. Generic and disease-specific quality of life was generally poor in all PROMPT participants, even those without OLD, highlighting the higher disease burden this vulnerable population faces. Quality of life was impacted by two major themes, including i) socioeconomic status and stress and ii) social networks and related experiences of trauma. CONCLUSION The prevalence and disease burden of OLD is significantly higher in Ottawa's urban poor population than what is observed in the general Canadian population who smoke, suggesting an etiological role of the social determinants of health. This urges the need for comprehensive care programs addressing up-stream factors leading to OLDs, including poor access and utilization of preventive healthcare addressing the social determinants of health. TRIAL REGISTRATION ClinicalTrails.gov - NCT03626064 , Retrospective registered: August 2018.
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Affiliation(s)
- Smita Pakhale
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada. .,The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada.
| | - Saania Tariq
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Nina Huynh
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Sadia Jama
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada.,University of Ottawa, Ottawa, Canada
| | - Tina Kaur
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Catherine Charron
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada.,University of Ottawa, Ottawa, Canada
| | - Kelly Florence
- Community (peer) Researcher, The Bridge Engagement Centre, Ottawa, Canada
| | - Fozia Nur
- The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | | | - Ted Bignell
- Community (peer) Researcher, The Bridge Engagement Centre, Ottawa, Canada
| | - Robert Boyd
- Oasis, Sandy Hill Community Health Centre, Ottawa, Canada
| | - Joanne Haddad
- Canadian Mental Health Association, The Ottawa Branch, Ottawa, Canada
| | - Tetyana Kendzerska
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada.,The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
| | - Gonzalo Alvarez
- Department of Medicine, The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada.,The Ottawa Hospital Research Institute (OHRI), Ottawa, Canada
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7
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DiSilvestro J, Haddad J, Robison K, Beffa L, Laprise J, Wilbur JS, Raker C, Hofstatter E, Dalela D, Brown A, Bradford L, Toland M, Stuckey A. Barriers to hormone replacement therapy following prophylactic bilateral salpingo-oophorectomy in BRCA1/2 mutation carriers. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Mimoun M, Almadani O, Boccara D, Chaouat M, Al Saud N, Serror K, Haddad J. Reconstruction Of The Burnt Nose Using A Carved Flap In Four Cases. Ann Burns Fire Disasters 2019; 32:64-69. [PMID: 31285737 PMCID: PMC6588326] [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] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 09/26/2018] [Indexed: 06/09/2023]
Abstract
Techniques for reconstructing nasal defects in burns are very limited because the surrounding scar tissue makes it difficult to use local flaps. The authors report their experience using the Converse scalping flap harvested from scarred skin, placed as a mass on the nasal area, then secondarily carved to shape the nose and covered by a skin graft. This is a retrospective study of 4 patients, 3 men and 1 woman, with an average age of 45 years, who were operated on between 1994 and 2013 using this technique for postburn nasal reconstruction. Patients had 45% burns on average. The flap was weaned from its donor site at the third week and the frontalis donor area grafted. Several months later, the flap was sculpted from the outside to the inside in the three dimensions, removing the scarred epidermal areas to restore the aesthetic units of the nose, which were grafted using a full thickness skin graft. The final aesthetic result of the nasal reconstruction was evaluated by the patient and the surgical team. The four nasal reconstructions were carried out to completion. Three were rated as 'very good' (75%) and one was rated as 'good' (25%). The Converse flap modification, referred to as the "carved flap", to reconstruct the burned nose is a reliable technique, possible on a scarred forehead with no additional donor site morbidity.
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Affiliation(s)
- M. Mimoun
- Dr Jonathan Haddad
Service de chirurgie plastique esthétique et reconstructrice unités de traitement des grands brûlés, Hôpital Saint Louis1 avenue Claude Vellefaux, 75010 ParisFrance
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9
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Pakhale S, Kaur T, Charron C, Florence K, Rose T, Jama S, Boyd R, Haddad J, Alvarez G, Tyndall M. Management and Point-of-Care for Tobacco Dependence (PROMPT): a feasibility mixed methods community-based participatory action research project in Ottawa, Canada. BMJ Open 2018; 8:e018416. [PMID: 29371273 PMCID: PMC5786139 DOI: 10.1136/bmjopen-2017-018416] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE To determine the feasibility of a Community-Based Participatory Tobacco Dependence Strategy (PROMPT) in the inner city population of Ottawa (Canada). DESIGN A feasibility mixed methods prospective cohort study following principles of community-based participatory action research. INTERVENTION Recruited 80 people whouse drugs, followed them for 6 months while providing access to counselling, nicotine replacement therapy and peer-support in a community setting. SETTING Community research office in downtown Ottawa, adjacent to low-income housing, shelter services and street-based drug consumption. PRIMARY OUTCOME Retention rate at 6-month follow-up. SECONDARY OUTCOME Biochemically validated 7-day point prevalence smoking abstinence at 26 weeks, self-reported abstinence in the past 7 days with exhaled carbon monoxide ≤10 ppm. RESULTS The average age of participants was 43.8 years. The 6-month follow-up rate was 42.5%. The mean number of smoking years reported was 27.3 years. The participants were 70% male, 33.7% reported less than a high-school education, 21% identified as indigenous and 43.8% reported an income between US$1000 and US$1999 per month. The baseline mean daily cigarette use was 20.5 and 9.3 cigarettes at study end, with mean reduction of 11.2 cigarettes at 6 months (P=0.0001). There was a considerable reduction in self-reported illicit substance use (18.8%), including a reduction in the opioids heroin (6.3%), fentanyl (2.6%) and Oxycontin (3.8%). The study findings also reveal psycho-socioeconomic benefits such as improved health, return to work and greater community engagement. CONCLUSIONS The PROMPT project describes socioeconomic variables associated with tobacco and polysubstance use. A programme focused on tobacco dependence, easily accessible in the community and led by community peers with lived experience is feasible to implement and has the potential to support positive life changes. PROMPT's patient engagement model is an effective harm-reduction strategy for the growing opioid use crisis and can improve the health outcomes of marginalised at-risk populations worldwide.
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Affiliation(s)
- Smita Pakhale
- Ottawa Hospital, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
| | - Tina Kaur
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Catherine Charron
- Ottawa Hospital, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
| | | | - Tiffany Rose
- The Bridge Engagement Centre, Ottawa, Ontario, Canada
| | - Sadia Jama
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Robert Boyd
- Oasis, Sandy Hill Community Health Centre, Ottawa, Ontario, Canada
| | - Joanne Haddad
- Canadian Mental Health Association, Ottawa, Ontario, Canada
| | - Gonzalo Alvarez
- Ottawa Hospital, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
| | - Mark Tyndall
- British Columbia Centre for Disease Control, Vancouver, Canada
- University of British Columbia, Vancouver, Canada
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10
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Nasir A, Bissonnette R, Maari C, DuBois J, Pene Dumitrescu T, Haddad J, Yamaguchi Y, Dalessandro M. A phase 2a randomized controlled study to evaluate the pharmacokinetic, safety, tolerability and clinical effect of topically applied Umeclidinium in subjects with primary axillary hyperhidrosis. J Eur Acad Dermatol Venereol 2017; 32:145-151. [DOI: 10.1111/jdv.14651] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/02/2017] [Indexed: 11/29/2022]
Affiliation(s)
- A. Nasir
- Wake Research Institute; Raleigh NC USA
| | | | - C. Maari
- Innovaderm Research Inc.; Montreal QC Canada
| | | | - T. Pene Dumitrescu
- Clinical Pharmacology Modeling and Simulation; GlaxoSmithKline Upper Merion PA USA
| | - J. Haddad
- Dermatology Therapeutic Area Unit; GlaxoSmithKline; Collegeville PA USA
| | - Y. Yamaguchi
- Dermatology Therapeutic Area Unit; GlaxoSmithKline; Collegeville PA USA
| | - M. Dalessandro
- Dermatology Therapeutic Area Unit; GlaxoSmithKline; Collegeville PA USA
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11
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Serror K, Chaouat M, Legrand MM, Depret F, Haddad J, Malca N, Mimoun M, Boccara D. Burns caused by electronic vaping devices (e-cigarettes): A new classification proposal based on mechanisms. Burns 2017; 44:544-548. [PMID: 29056367 DOI: 10.1016/j.burns.2017.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/02/2017] [Accepted: 09/18/2017] [Indexed: 10/18/2022]
Abstract
Introduction With more than 10 million of daily users, e-cigarettes encountered a great success. But in the past few years, the number of medical reports of injuries caused by the explosion of e-cigarettes has significantly increased. This article aims at reporting our series and reviewing the literature to propose a new classification based on the mechanisms of injuries related to e-cigarettes that can guide non-specialists and specialists in the management of these patients. Method We performed a retrospective review of our institutional burn database from June 2016 to July 2017 for injuries caused by or in the context of using an e-cigarette. The patients' demographics (age, gender), burn injury mechanisms, depth, localization, surface and interventions were described. Results Ten patients suffered from burns related to the use of e-cigarettes. The burns were located at the thigh (80%) and the hand (50%) with a mean surface of 3% of TBSA. Four different mechanisms could be described: Type A: thermal burns with flames due to the phenomenon of "thermal runaway", Type B: blasts lesions secondary to the explosion, Type C: chemical alkali burns caused by spreading of the electrolyte solution and Type D: thermal burns without flames due to overheating. These different mechanisms suggest specific surgical and non-surgical management. Conclusion Management of injuries sustained from e-cigarettes' explosions should be approached from the standpoint of mechanisms. Different mechanisms could be associated and should be considered in specific management.
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Affiliation(s)
- K Serror
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France.
| | - M Chaouat
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - Matthieu M Legrand
- Departement of Anesthesiology and Intensive Care Unit, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - F Depret
- Departement of Anesthesiology and Intensive Care Unit, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - J Haddad
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - N Malca
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - M Mimoun
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - D Boccara
- Department of Plastic Reconstructive Surgery, Burn Center, Hôpital Saint Louis, AP-HP 1 Avenue Claude Vellefaux, 75010 Paris, France
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12
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Badia-Boungou F, Sane F, Alidjinou EK, Ternois M, Opoko PA, Haddad J, Stukens C, Lefevre C, Gueorguieva I, Hamze M, Ismail M, Weill J, Monabéka HG, Bouenizabila E, Moukassa D, Abena AA, Hober D. Marker of coxsackievirus-B4 infection in saliva of patients with type 1 diabetes. Diabetes Metab Res Rev 2017; 33. [PMID: 28719027 DOI: 10.1002/dmrr.2916] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 06/20/2017] [Accepted: 07/03/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND Coxsackieviruses B (CV-B) are enteroviruses that have been reported to play a role in the pathogenesis of type 1 diabetes. Enteroviral RNA was detected in the gut mucosa of patients. The mucosal immunity is an interconnected network; therefore, the response to enteroviruses possibly present in the gastrointestinal mucosa can be reflected by specific antibodies in the saliva. In the present study, the anti-CV-B neutralizing activity of saliva samples from patients with type 1 diabetes was investigated. METHODS Saliva samples were collected from patients and controls of 3 countries, and plasma was obtained from some of them. The anti-CV-B activity of clinical samples was determined by neutralization of the cytopathic effect induced by challenging viruses in vitro and expressed as titre value. RESULTS Overall prevalence and levels of anti-CV-B4 activity of saliva were higher in patients (n = 181) than in controls (n = 135; P = .0002; titre values ≥ 16: odds ratio = 4.22 95% CI: 1.90-9.38 P = .0002). It has been shown that IgA1 played a role in this activity. There was no correlation between the saliva and the plasma anti-CV-B4 neutralizing activity. The neutralizing activity of saliva against CV-B1, CV-B2, CV-B3, and CV-B5 existed rarely, if at all. Increased levels of anti-CV-B4 activity were observed all along a 4 year follow-up period in patients but not in matched controls (P = .01). CONCLUSION There is an anti-CV-B4 activity in saliva of patients with type 1 diabetes that may be a useful marker to study the role of CV-B in the pathogenesis of the disease.
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Affiliation(s)
- F Badia-Boungou
- Univ. Lille, Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, France
- Hôpital Général de Loandjili, Pointe Noire, Republic of Congo
| | - F Sane
- Univ. Lille, Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, France
| | - E K Alidjinou
- Univ. Lille, Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, France
| | - M Ternois
- Univ. Lille, Faculté d'odontologie et de chirurgie dentaire, Lille, France
| | - P A Opoko
- Hôpital Général de Loandjili, Pointe Noire, Republic of Congo
| | - J Haddad
- Lebanese University Faculty of Public Health, Health and Environment Microbiology Laboratory, Tripoli, Lebanon
| | - C Stukens
- CHU Hôpital Jeanne de Flandres, Lille, France
| | - C Lefevre
- CHU Hôpital Jeanne de Flandres, Lille, France
| | | | - M Hamze
- Lebanese University Faculty of Public Health, Health and Environment Microbiology Laboratory, Tripoli, Lebanon
| | - M Ismail
- Lebanese University Faculty of Public Health, Health and Environment Microbiology Laboratory, Tripoli, Lebanon
| | - J Weill
- CHU Hôpital Jeanne de Flandres, Lille, France
| | - H G Monabéka
- Université Marien Ngouabi, Faculté des sciences et de la santé, Brazzaville, République du Congo
- CHU de Brazzaville, Brazzaville, Republic of Congo
| | | | - D Moukassa
- Hôpital Général de Loandjili, Pointe Noire, Republic of Congo
- Université Marien Ngouabi, Faculté des sciences et de la santé, Brazzaville, République du Congo
| | - A A Abena
- Université Marien Ngouabi, Faculté des sciences et de la santé, Brazzaville, République du Congo
| | - D Hober
- Univ. Lille, Faculté de Médecine, CHU Lille, Laboratoire de Virologie EA3610, Lille, France
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13
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Abstract
Two new amide functionalised metal–organic frameworks, In(OH)CSA and In(OH)PDG, were synthesized using two flexible linkers, N-(4-carboxyphenyl)succinamic acid (CSA) and N,N′-(1,4-phenylenedicarbonyl)diglycine (PDG), respectively. Both structures consist of corner-sharing {InO4(OH)2} octahedra in the form of trans indium hydroxide chains, which are interconnected by the dicarboxylate linkers to form stacked 2-dimensional layers. The different symmetries and configurations of the flexible and rigid features on the linkers results in different supramolecular interactions dominating between linkers, resulting in different shaped pores and functional group orientation. In(OH)CSA lacks hydrogen bonding between linkers, which results in close packing between the layers and very small solvent accessible pores running perpendicular to the plane of the layers. In(OH)PDG exhibits strong intra- and interlayer hydrogen bonding, which prevents the layers from close packing and results in larger cylindrical pores running parallel to the indium hydroxide chains, producing a total accessible volume of 25% of the unit cell volume.
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Affiliation(s)
- J. Haddad
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
| | | | | | - M. J. Rosseinsky
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
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Fukuto M, Ocko BM, Bonthuis DJ, Netz RR, Steinrück HG, Pontoni D, Kuzmenko I, Haddad J, Deutsch M. Nanoscale Structure of the Oil-Water Interface. Phys Rev Lett 2016; 117:256102. [PMID: 28036213 DOI: 10.1103/physrevlett.117.256102] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Indexed: 06/06/2023]
Abstract
X-ray reflectivity (XR) and atomistic molecular dynamics (MD) simulations, carried out to determine the structure of the oil-water interface, provide new insight into the simplest liquid-liquid interface. For several oils (hexane, dodecane, and hexadecane) the XR shows very good agreement with a monotonic interface-normal electron density profile (EDP) broadened only by capillary waves. Similar agreement is also found for an EDP including a sub-Å thick electron depletion layer separating the oil and the water. The XR and MD derived depletions are much smaller than reported for the interface between solid-supported hydrophobic monolayers and water.
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Affiliation(s)
- M Fukuto
- Condensed Matter Physics and Materials Sciences Department and NSLS II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B M Ocko
- Condensed Matter Physics and Materials Sciences Department and NSLS II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D J Bonthuis
- Rudolf Peierls Centre for Theoretical Physics, Oxford University, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - R R Netz
- Department of Physics, Free University Berlin, D-14195 Berlin, Germany
| | - H-G Steinrück
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D Pontoni
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - I Kuzmenko
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J Haddad
- Physics Department and Institute of Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - M Deutsch
- Physics Department and Institute of Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel
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Haddad J, Kalbacher E, Piccard M, Aubry S, Chaigneau L, Pauchot J. [Evaluation of the management of soft tissue sarcomas in Franche-Comté since the establishment of a multidisciplinary meeting at University Hospital. About 47 cases]. ANN CHIR PLAST ESTH 2016; 62:15-22. [PMID: 27777135 DOI: 10.1016/j.anplas.2016.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/19/2016] [Indexed: 01/22/2023]
Abstract
GOALS OF STUDY A multidisciplinary meeting (RCP) dedicated to the treatment of sarcoma was established in Franche-Comte in 2010. The goals of the study are: (a) To evaluate the treatment of sarcomas by confrontation with the existing literature; (b) To evaluate the influence of the multidisciplinary meeting on the management of sarcomas by hospitals at the regional level. MATERIALS AND METHODS This is a retrospective single center study from 2010 to 2015 on patients with sarcoma and peripheral soft tissue drawn from a Netsarc database (National Network of sarcomas) and communicating cancer record. A database Cleanweb especially dedicated is created. RESULTS Forty-seven patients were included: ten sarcomas at the upper member 26 to the lower limbs, 11 on the trunk. Forty patients were operated on: ten out of the university hospital, 28 at the university hospital and two in a coordinating center. Ninety percent of patients treated at the university hospital were in accordance with the recommandations. None of the patients operated out of the university hospital benefited from medical care in accordance to the recommendations. There is an increase in the number of files sent by the hospitals out of the university hospital discussed in multidisciplinary meeting, before treatment. CONCLUSION The creation of a dedicated multidisciplinary meeting sarcoma improves the medical management of these tumors and decreases inappropriate medical managements thanks to a better education of the regional physicians.
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Affiliation(s)
- J Haddad
- Service de chirurgie orthopédique, traumatologique et plastique, chirurgie de la main, CHU Jean-Minjoz, 1, boulevard Flemming, 25030 Besançon, France
| | - E Kalbacher
- Service d'oncologie médicale, CHU Jean-Minjoz, 1, boulevard Flemming, 25030 Besançon, France
| | - M Piccard
- Service d'épidémiologie et d'hygiène hospitalière, CHU de Dijon, 21079 Dijon cedex, France
| | - S Aubry
- Service de radiologie A, CHU Jean-Minjoz, 1, boulevard Flemming, 25030 Besançon, France
| | - L Chaigneau
- Service d'oncologie médicale, CHU Jean-Minjoz, 1, boulevard Flemming, 25030 Besançon, France
| | - J Pauchot
- Service de chirurgie orthopédique, traumatologique et plastique, chirurgie de la main, CHU Jean-Minjoz, 1, boulevard Flemming, 25030 Besançon, France.
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Haddad J, Muzquiz M, Allaf K. Treatment of Lupin Seed Using the Instantaneous Controlled Pressure Drop Technology to Reduce Alkaloid Content. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013206070160] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Despite their high protein content, lupin seeds are not as fully utilised as some other grain legumes. The drawback in their utilisation is mainly due to the presence of water soluble, poisonous alkaloids. In this study, an instantaneous controlled pressure drop (DIC) treatment followed by an aqueous extraction was performed on lupin seeds. Two species Lupinus albus and Lupinus mutabilis with different initial total alkaloid content of 0.025% and 5.5% (d.b.), respectively have been studied. Lupanine was the major alkaloid found in both lupin species. Experimental results proved the feasibility of using DIC treatment to reduce the alkaloid content of lupin seeds. Optimised DIC treatment combined with an adequate 2h soaking in water reduced the alkaloid content from 5.5% to 2.2% of L. mutabilis and from 0.025% to 0.0075% of L. albus.
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Affiliation(s)
- J. Haddad
- Laboratoire Maîtrise des Technologies Agro-Industrielles (LMTAI), Pôle Sciences et Technologies, Université de La Rochelle, Avenue Michel CREPEAU 17042 La Rochelle Cedex 01, France,
| | - M. Muzquiz
- Area Tecnologia de Alimentos, CIT-INIA, Aptdo. 811, 28080, Madrid Spain
| | - K. Allaf
- Laboratoire Maîtrise des Technologies Agro-Industrielles (LMTAI), Pôle Sciences et Technologies, Université de La Rochelle, Avenue Michel CREPEAU 17042 La Rochelle Cedex 01, France
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Pakhale S, Kaur T, Florence K, Rose T, Boyd R, Haddad J, Pettey D, Muckle W, Tyndall M. The Ottawa Citizen Engagement and Action Model (OCEAM): A Citizen engagement Strategy Operationalized Through The Participatory Research in Ottawa, Management and Point-of-care of Tobacco (PROMPT) Study: A Community Based Participatory Action Research Project in Inner City Ottawa. Res Involv Engagem 2016; 2:20. [PMID: 29507759 PMCID: PMC5831885 DOI: 10.1186/s40900-016-0034-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/11/2016] [Indexed: 06/01/2023]
Abstract
PLAIN LANGUAGE SUMMARY The PROMPT study is a community-based research project designed to understand the factors which affect smoking as well as ways to manage, reduce and quit smoking among people who use drugs in Ottawa. There is strong medical evidence that smoking tobacco is related to more than two dozen diseases and conditions. Smoking tobacco remains the leading cause of preventable death and has negative health impacts on people of all ages. Although Ottawa has one of the lowest smoking rates in Ontario (12 %), major differences exist, with approximately a 96 % smoking rate among those who use drugs in the city of Ottawa. To address this inequity, we recruited and trained four community research peers who were representative of the study target population (ex- or currently homeless, insecurely housed or multi-drug users). We designed the ten-step Ottawa Citizen Engagement and Action Model (OCEAM) for the PROMPT study. In this paper we have described this process in a step-by-step fashion, as used in the PROMPT study. The eighty PROMPT participants are being followed for six months and are being provided with free and off-label Nicotine Replacement Therapy (NRT). ABSTRACT Objectives The PROMPT study, Participatory Research in Ottawa, Management and Point-of-care of Tobacco, is a prospective cohort study which utilizes community-based participation and social network-based approaches to address tobacco dependence in inner city Ottawa. The project was designed to: facilitate retention of participants; to understand the barriers and facilitators of smoking; optimize ways to manage, reduce, and quit tobacco use among people who use drugs in Ottawa, Canada. The purpose of this paper is to describe the processes utilized in citizen or patient engagement in academic research, through our tobacco dependence management project in the inner city population in Ottawa, Canada.Background Tobacco smoking is inequitably distributed in Canada with rates at 12 % in Ottawa, as compared to 18 % in rest of Canada. However, the PROUD Study (Participatory Research in Ottawa: Understanding Drugs) demonstrated that 96 % of the inner city population, of Ottawa currently smoke tobacco. This distinct inequity in tobacco use translates into inequitable distribution of health outcomes, such morbidity and mortality in this population. Consequently, a community-based participatory, peer-led research project was conducted in the inner city population of Ottawa.Methods We recruited and trained four community research peers who were representative of the study target population. We conceived, designed and operationalized the ten-step Ottawa Citizen Engagement and Action Model (OCEAM) for the PROMPT study. The peers have co-led all aspects of the project from conceptualizing the study question to participating in knowledge translation. Each step of the project had defined objectives and outcome measures.Discussion The involvement of peers in recruitment ensured representation of tobacco and drug users-individuals truly representative of the intended target population. Peer, participant engagement and trust was established from the conception of the project. For historical and self-evident reasons, trust and engagement is rarely found in this population. Peers successfully participated in all ten steps of the Citizen Engagement and Action model. The PROMPT study utilized the CBPR (Community Based Participatory research) approach to encourage engagement and build trust in a difficult to reach and hard to treat, inner city population. The ten-step OCEAM model was conceived, designed and operationalized and the PROMPT study will continue to follow the eighty PROMPT participants for six months to understand the optimal ways to manage, reduce, and quit smoking within an inner city population.
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Affiliation(s)
- Smita Pakhale
- The Ottawa Hospital, University of Ottawa, Ottawa, Canada
- The Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, Canada
- University of Ottawa, Ottawa, Canada
| | - Tina Kaur
- The Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, Canada
| | - Kelly Florence
- The Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, Canada
- Community research peers, Oasis, Sandy Hill Community Health Centre, Ottawa, Canada
| | - Tiffany Rose
- The Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, Canada
- Community research peers, Oasis, Sandy Hill Community Health Centre, Ottawa, Canada
| | - Robert Boyd
- Oasis, Sandy Hill Community Health Centre, Ottawa, Canada
| | - Joanne Haddad
- Canadian Mental Health Association, Ottawa Branch, Ottawa, Canada
| | - Donna Pettey
- Canadian Mental Health Association, Ottawa Branch, Ottawa, Canada
| | | | - Mark Tyndall
- British Columbia CDC, University of British Columbia, Vancouver, BC Canada
- University of British Columbia, Vancouver, BC Canada
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Grundner M, Khamesh M, Haddad J, Jain A, Home P. Prädiktive und erklärende Faktoren für eine Veränderung des Körpergewichts nach Beginn einer Behandlung mit Insulinanaloga. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Steinhaus J, Berent A, Weisse C, Eatroff A, Donovan T, Haddad J, Bagley D. Clinical presentation and outcome of cats with circumcaval ureters associated with a ureteral obstruction. J Vet Intern Med 2015; 29:63-70. [PMID: 25270055 PMCID: PMC4858092 DOI: 10.1111/jvim.12465] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 07/24/2014] [Accepted: 08/25/2014] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Circumcaval ureters (CU) are a rare embryological malformation resulting in ventral displacement of the caudal vena cava, which crosses the ureter, potentially causing a ureteral stricture. OBJECTIVES To evaluate cats with obstructed CU(s) and report the presenting signs, diagnostics, treatment(s), and outcomes. Cats with obstructed CU(s) were compared to ureterally obstructed cats without CU(s). ANIMALS 193 cats; 22 circumcaval obstructed (Group 1); 106 non-circumcaval obstructed (Group 2); 65 non-obstructed necropsy cases (Group 3). METHODS Retrospective study, review of medical records for cats treated for benign ureteral obstructions from AMC and University of Pennsylvania between 2009 and 2013. INCLUSION CRITERIA surgical treatment of benign ureteral obstruction, complete medical record including radiographic, ultrasonographic, biochemistry, and surgical findings. RESULTS Seventeen percent (22/128) of obstructed cats had a CU (80% right-sided) compared to 14% (9/65) non-obstructed necropsy cats (89% right-sided). Clinical presentation, radiographic findings, and creatinine were not statistically different between Groups 1 and 2. Strictures were a statistically more common (40%) cause of ureteral obstruction in Group 1 compared to Group 2 (17%) (P = .01). The MST for Groups 1 and 2 after ureteral decompression was 923 and 762 days, respectively (P = .62), with the MST for death secondary to kidney disease in both groups being >1,442 days. Re-obstruction was the most common complication in Group 1 (24%) occurring more commonly in ureters of cats treated with a ureteral stent(s) (44%) compared to the subcutaneous ureteral bypass (SUB) device (8%) (P = .01). CONCLUSIONS AND CLINICAL IMPORTANCE Ureteral obstructions in cats with a CU(s) have a similar outcome to those cats with a ureteral obstruction and normal ureteral anatomy. Long-term prognosis is good for benign ureteral obstructions treated with a double pigtail stent or a SUB device. The SUB device re-obstructed less commonly than the ureteral stent, especially when a ureteral stricture was present.
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Affiliation(s)
- J. Steinhaus
- Department of Interventional Radiology and EndoscopyThe AMCNew YorkNY
| | - A.C. Berent
- Department of Interventional Radiology and EndoscopyThe AMCNew YorkNY
| | - C. Weisse
- Department of Interventional Radiology and EndoscopyThe AMCNew YorkNY
| | - A. Eatroff
- Department of Internal MedicineBluePearl Veterinary PartnersNew YorkNY
| | - T. Donovan
- Department of Anatomic PathologyThe AMCNew YorkNY
| | - J. Haddad
- Department of Anatomic and Clinical PathologyIdexx LaboratoriesNew YorkNY
| | - D. Bagley
- Thomas Jefferson UniversityPhiladelphiaPA
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Saso S, Haddad J, Ellis P, Lindsay I, Sebire NJ, McIndoe A, Seckl MJ, Smith JR. Placental site trophoblastic tumours and the concept of fertility preservation. BJOG 2011; 119:369-74; discussion 374. [DOI: 10.1111/j.1471-0528.2011.03230.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Haddad J, Mokline A, Rahmani I, Oueslati H, El Jami I, Brini K, Bousselmi K, Messadi A. Non-invasive positive pressure ventilation in burns. Crit Care 2010. [PMCID: PMC2934565 DOI: 10.1186/cc8472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Jurney C, Haddad J, Crawford N, Miller AD, Van Winkle TJ, Vite CH, Sponenberg P, Inzana KD, Cook CR, Britt L, O'Brien DP. Polymicrogyria in standard poodles. J Vet Intern Med 2009; 23:871-4. [PMID: 19566852 DOI: 10.1111/j.1939-1676.2009.0338.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Polymicrogyria is a disorder of cerebrocortical migration resulting in increased numbers of small, disorganized gyri. This disorder occurs in Standard Poodles and in cattle. OBJECTIVES To describe the clinical, electroencephalographic, imaging, and histopathologic features in poodles with polymicrogyria. ANIMALS Five Standard Poodles with histologically confirmed polymicrogyria. METHODS Retrospective case series. Cases were obtained by personal communication with 1 of 2 authors (TJVW, DPO). RESULTS All dogs had cortical blindness and other neurologic abnormalities including gait and behavioral changes. Magnetic resonance imaging of 3 dogs showed multiple disorganized gyri, which were especially apparent on T2-weighted dorsal plane images. Electroencephalogram (EEG) of 1 dog revealed epileptiform discharges, including both spike and spike and wave discharges with voltage maximum potentials over the parietal/occipital region. The EEG supported that the repetitive behavior displayed by the dog was a complex partial motor seizure. One dog had concurrent hydrocephalus. All dogs had occipital lobe involvement and 2 dogs had involvement of other lobes. CLINICAL IMPORTANCE The cases presented here demonstrate a larger age range (7 weeks to 5 years) and a decreased frequency of associated hydrocephalus when compared with the previous report.
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Affiliation(s)
- C Jurney
- Neurology Department, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Haddad J. L’approche sociale du handicap. Arch Pediatr 2009; 16:918-20. [DOI: 10.1016/s0929-693x(09)74203-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Congenital heart diseases are one of the most common structural defects present at birth, with an approximate incidence of 8 per 1000 live births. As most countries in South America have a high birth rate, they are a significant public health concern. This paper provides a brief overview of the burden of congenital heart disease in South America, focusing on its local prevalence, facilities for treatment and outcomes after medical, surgical or catheter intervention for the most common diseases.
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Affiliation(s)
- C A C Pedra
- Catheterisation Laboratory for Congenital Heart Disease, Instituto Dante Pazzanese de Cardiologia, Av Dr Dante Pazzanese 500, 14 andar, CEP 04012-180, São Paulo, SP, Brazil.
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Oskoui M, Jacobson L, Chung WK, Haddad J, Vincent A, Kaufmann P, De Vivo DC. Fetal acetylcholine receptor inactivation syndrome and maternal myasthenia gravis. Neurology 2009; 71:2010-2. [PMID: 19064884 DOI: 10.1212/01.wnl.0000336929.38733.7a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- M Oskoui
- Department of Neurology, McGill University, Montreal, Quebec, Canada
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Reisfield GM, Haddad J, Wilson GR, Johannsen LM, Voorhees KL, Chronister CW, Goldberger BA, Peele JD, Bertholf RL. Failure of Amoxicillin to Produce False-Positive Urine Screens for Cocaine Metabolite. J Anal Toxicol 2008; 32:315-8. [DOI: 10.1093/jat/32.4.315] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [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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Hammoudeh AJ, Izraiq M, Al-Mousa E, Al-Tarawneh H, Elharassis A, Mahadeen Z, Badran N, Haddad J. Serum lipid profiles with and without CAD: Jordan Hyperlipidaemia and Related Targets Study (JoHARTS-1). East Mediterr Health J 2008; 14:24-32. [PMID: 18557449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We measured fasting serum total cholesterol (TC), triglycerides (TG), and low- and high-density lipoprotein cholesterol (LDL-C and HDL-C) levels in 5000 individuals. Coronary artery disease (CAD) was present in 31%. Compared with women, men had lower mean TC, LDL-C and HDL-C and higher mean TG. Optimal TC level was observed in only 46% of men and 41% of women, and optimal TG in 42% of men and 50% of women. Only 3% of men and 12% of women had HDL-C > 60 mg/dL. Mean TC was not different in CAD patients and those without CAD, but mean TG was significantly higher and mean HDL-C was lower. In all age groups, low HDL-C was more prevalent among men and women who had CAD.
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Affiliation(s)
- A J Hammoudeh
- Cardiology Department, Al-Essra Hospital, Amman, Jordan.
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Bell RG, Beauséjour P, Haddad J. Échantillon d’instruments de mesure de la qualité de vie et de théories pour évaluer des services de psychiatrie. SMQ 2007. [DOI: 10.7202/032273ar] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
RÉSUMÉ
Un échantillon d'instruments de mesure de la qualité de vie est passé en revue pour les lecteurs qui veulent en déterminer la pertinence dans l'évaluation de services de psychiatrie. Tous les instruments sont explorés selon la manière d'y traiter amis et membres de la famille. Les instruments sont aussi évalués suivant leur position sur trois questions théoriques: l'utilisation des indicateurs objectifs et subjectifs de la qualité de vie; l'inclusion des états positifs de bien-être dans l'instrument de mesure; et le point de vue de l'instrument mesurant la qualité de vie. Chacune de ces questions est présentée. Position des auteurs: les indicateurs objectifs et subjectifs se complètent; il y a de grands avantages à mesurer les états positifs de bien-être tout comme les états négatifs; tous les points de vue sont valables, et il y a un risque à accepter un point de vue particulier, surtout d'une autre personne, comme standard de définition.
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O'Day S, Gonzalez R, Lawson D, Weber R, Hutchins L, Anderson C, McLeod M, Hurwitz C, Haddad J, Jacobson E. Subgroup analysis of efficacy and safety analysis of a randomized, double-blinded controlled phase II study of STA-4783 in combination with paclitaxel in patients with metastatic melanoma. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.8528] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
8528 Background: STA-4783 (S), an inducer of heat shock protein 70 (hsp70) is a bis-thiobenzoylhydrazide compound. S leads to up-regulation of hsp70 in tumor cell lines. Xenograft models of solid tumors showed synergistic anti-tumor activity in combination with paclitaxel (P). The combination P + S, in phase I and II studies, showed dose-related hsp70 induction (evidence of biological activity) and tolerability. Methods: Eligibility was based on a diagnosis of metastatic cutaneous melanoma, ECOG <=2, and prior treatment with 1 or no chemotherapy regimens. A total of 81 patients (pts) were randomized 2:1 (P 80 mg/m2 + S 213 mg/m2:P 80 mg/m2) 3 weeks out of 4 at 21 US clinical sites. The primary endpoint was progression free survival (PFS); secondary endpoints were response rate (RR), and adverse events (AEs). Results: Based on intent-to-treat analysis, the median PFS was 3.68 months (m) for P + S vs. 1.84 m in the P only arm (p=.035). RR was 15.1% in the P + S arm and 3.6% in the P arm. Subgroup analysis showed chemo- naive pts (n=23) with P + S showed a median PFS of 8.28 m vs. 2.40 in the P arm (n=9). For pts with 1 prior chemotherapy, (n=29), PFS on P + S was 3.12 m vs. 1.77 m on P (n=19). Of 19 pts who crossed over at progression, data are available for 14. PFS ranged from 0.72 to 5.5 m. Three of the 14 evaluable pts treated with P alone had rapid progression (0.95, 1.6, and 1.7 m) then significant inversion of the time to progression with the addition of S to P (2.3, 5.5, and 4.2 m) suggesting study drug effect. Scans were done at identical intervals (8 weeks). The proportion of pts with AEs of grade 3 or higher was 54% (n=52) in the P + S group and 57% in the P group (n=28); pts on P received a median of 2 cycles, while pts in the P + S group received a median of 4. Adverse events leading to discontinuation were low in both groups: 10% for the P + S, and 14% for P. Conclusions: The addition of S to P showed an increase in PFS vs. P alone particularly in chemo-naïve pts. A few pts failing single agent P appeared to benefit from P + S. Despite the additional treatment duration in the P + S group the drugs were well- tolerated, and showed mainly P related adverse events. A phase III study is planned to confirm a role for P + S in metastatic melanoma. [Table: see text]
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Affiliation(s)
- S. O'Day
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - R. Gonzalez
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - D. Lawson
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - R. Weber
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - L. Hutchins
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - C. Anderson
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - M. McLeod
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - C. Hurwitz
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - J. Haddad
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
| | - E. Jacobson
- The Angeles Clinic and Research Institute, Santa Monica, CA; University of Colorado Health Sciences Center, Aurora, CO; Emory Winship Cancer Institute, Atlanta, GA; St. Francis Memorial Hospital, San Francisco, CA; University of Arkansas for Medical Sciences, Little Rock, AR; Ellis Fischel Cancer Center, Columbia, MO; Synta Pharmaceuticals, Lexington, MA
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Wheat J, Scaife R, Haddad J. Reliability of time-to-contact measures to assess postural stability. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)85293-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Haddad J, Gagnon J, Hasson C, van Emmerik R, Hamill J. The use of time-to-contact measures in assessing postural stability. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)85297-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Haddad J, Safi F, Dargham L, Najm R. Créativité et handicap : l'exemple d'une institution spécialisée au Liban. Arch Pediatr 2005; 12:861-2. [PMID: 15904830 DOI: 10.1016/j.arcped.2005.03.027] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- J Haddad
- Sesobel, Ain-El-Rihani, BP 551 Zouk-Mikael, Liban.
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Haddad J, Najm R, Dargham L, Bakhos M, Rached E, Safi F. La prise en charge précoce améliore-t-elle le pronostic de l'handicap ? À propos de 1700 familles. Arch Pediatr 2004; 11:619-20. [PMID: 15158857 DOI: 10.1016/j.arcped.2004.03.056] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- J Haddad
- Département de pédiatrie, CHU Saint-Georges, 166378 Beyrouth, Liban.
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36
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Oster L, Horowitz YS, Biderman S, Haddad J. The concept of quasi-tissue-equivalent nanodosimeter based on the glow peak 5a/5 in LiF:Mg,Ti (TLD-100). Australas Phys Eng Sci Med 2004; 26:173-8. [PMID: 14995062 DOI: 10.1007/bf03179178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We demonstrate the viability of the concept of using existing molecular nanostructures in thermoluminescent solid-state materials as solid-state nanodosimeters. The concept is based on mimicking radiobiology (specifically the ionization density dependence of double strand breaks in DNA) by using the similar ionization density dependence of simultaneous electron-hole capture in spatially correlated trapping and luminescent centres pairs in the thermoluminescence of LiF:Mg,Ti. This simultaneous electron-hole capture has been shown to lead to ionization density dependence in the relative intensity of peak 5a to peak 5 similar to the ratio of double-strand breaks to single-strand breaks for low energy He ions.
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Affiliation(s)
- L Oster
- Physics Department, Negev Academic College of Engineering, Beer-Sheva, Israel.
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Karam SE, Haddad J, Abou Charaf C, Saliba Z, Chehab G, Hatem J. [Pericardial effusion in the neonate: a complication of umbilical catheters]. Arch Pediatr 2003; 10:550-1. [PMID: 12915024 DOI: 10.1016/s0929-693x(03)00177-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
Propagation of acoustic waves in thin-walled elastic tube with coaxial internal rigid rod is investigated in conjugated quasi-one-dimensional formulation. The cylindrical gap between the tube's wall and the central rod is filled by polymeric liquid, described by hereditary model with a discrete spectrum. Dynamics of the tube is treated within Kirchhoff-Love approximation. The dispersion equation accounting for viscoelastic effects in the fluid in coupling with inertia, radial and longitudinal deformations of the tube's wall has been obtained. Its analysis has showed strong influence of the liquid's rheological properties and geometrical parameters of the system on pressure signals dispersion and attenuation. The results can be used for rheological characterization of polymeric liquids by acoustic means.
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Affiliation(s)
- S Levitsky
- Negev Academic College of Engineering, Beer-Sheva, Israel.
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41
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Braga FJ, De Miranda JR, Arbex MA, Haddad J, Zuolo Ferro S, de Oliveira RB, Ferriolli E. A physiological manoeuvre to improve the positivity of the gastro-oesophageal reflux scintigraphic test. Nucl Med Commun 2001; 22:521-4. [PMID: 11388573 DOI: 10.1097/00006231-200105000-00009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 12/25/2022]
Abstract
One of the best examinations used routinely to detect gastro-oesophageal reflux (GOR) is scintigraphy and attempts are continuously being made to improve the performance of the test. We have tested a new manoeuvre to improve the results. Three hundred and twenty eight patients (190 males and 138 females, aged 1 month to 84 years, average 4.47 years) were studied after a 12 h fast period with 100 MBq of 99Tcm-phytate, 50 ml volume, directly delivered into the stomach in a mixture of orange juice. All patients were strongly suspected of having GOR. Conventional acquisition was done for 20 min, at a rate of one frame every 20 s. In the middle of the examination, small children were put in the upright position and held there for a few seconds or released in a way that allowed movement; adults were asked to stand up and walk a few metres. The test was then continued for the remaining 10 min. The global index of positivity was 64.6% (76 positive cases in the first half of the examination and 134 positive cases only after the manoeuvre). The mean of GOR episodes observed in the positive cases without the manoeuvre was 0.5 per patient, significantly different from the mean of 1.59 noted after the manoeuvre (P<0.01). In 28 cases the manoeuvre increased either the intensity or the frequency of reflux previously detected without it. We believe that this manoeuvre should be performed in all scintigraphic tests aiming to detect GOR. In the present series, the manoeuvre increased the frequency of GOR episodes.
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Affiliation(s)
- F J Braga
- Departamento de Física e Biofísica, Instituto de Biociências, UNESP, Botucatu, Brazil.
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Abstract
OBJECTIVES Oxygen free radicals are implicated in the pathogenesis of otitis media Recent investigations with animal models have demonstrated that free radical-mediated damage of the middle ear mucosa, measured as lipid hydroperoxide, occurs when the middle ear cavity is inoculated with Streptococcus pneumoniae. The present study was conducted to examine the effect of antibiotics on free radical-mediated damage in pneumococcal acute otitis media. STUDY DESIGN Animal model of acute otitis media. METHODS Seventy-eight guinea pigs underwent bilateral middle ear inoculation with 100 microl of 1) sterile saline as a control, 2) 50 microg/mL amoxicillin, 3) 10(7) colony forming units (CFU)/mL Streptococcus pneumoniae killed with 50 microg/mL amoxicillin, or 4) 10(7) CFU/mL S. pneumoniae. Animals were killed on postoperative day 1 or 5, and the middle ear mucosa was examined for lipid peroxidation as evidence of free radical damage. RESULTS Mucosal lipid hydroperoxide was significantly elevated compared with control subjects on day 1 in both the antibiotic-killed S. pneumoniae group and the S. pneumoniae-infected group. On day 5, the S. pneumoniae-infected mucosa had significantly higher lipid hydroperoxide levels compared with the antibiotic-killed group and the control subjects. Histological studies confirmed mucosal edema and the presence of inflammatory cells in the infected groups. CONCLUSIONS Antibiotic-killed bacteria seem to produce free radical-mediated damage to the middle ear mucosa in the early phase of acute otitis media. The clinical implication of this study is that free radical damage to the middle ear mucosa may occur in otitis media despite appropriate antibiotic therapy.
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Affiliation(s)
- T G Takoudes
- Department of Otolaryngology--Head and Neck Surgery, Columbia University, College of Physicians and Surgeons, New York, New York, USA
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Abstract
OBJECTIVE To describe the spectrum of pediatric tongue lesions treated surgically at Columbia-Presbyterian Medical Center from January 1990 to December 1999. STUDY DESIGN AND SETTING Retrospective case-series at the pediatric hospital of a tertiary care, academic medical center. RESULTS Seventeen patients were identified. Their ages ranged from 1 to 132 months (median, 7 months). Eight lesions were located anteriorly: mucous cyst (1), polyp (1), chronic inflammatory mass (1), hamartoma (1), squamous papilloma (2), cavernous hemangioma (1), and vascular malformation (1). Four lesions were located posteriorly: teratoma (1), glial choristoma (1), osseous choristoma (1), and benign epithelial cyst (1). Finally, there were 5 diffuse lesions including macroglossia (4) and massively infiltrating congenital lymphatic malformation (1). Symptoms included respiratory distress (3) and dysarthria (3); all other children were asymptomatic. CONCLUSIONS This series revealed an interesting spectrum of rare solid tumors; compared with other large series, fewer lymphatic and vascular malformations were seen. Presenting symptoms, differential diagnosis, and surgical approach were differentiated according to lesion location.
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Affiliation(s)
- C Horn
- Department of Otolaryngology, Columbia-Presbyterian Medical Center, New York, NY, USA
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Abstract
PURPOSE Testicular tumors do not occur frequently. Primary treatment is surgical, and radiotherapy and chemotherapy can play important roles in cases of metastatic disease. Bone scintigraphy is used largely for early detection of skeletal metastases from several tumors, and conventional radiographic studies are less sensitive than the nuclear technique for such a purpose. The aim of this study was to identify the role of bone scintigraphy in cases of testicular tumors, regardless of the grade. MATERIALS AND METHODS The authors examined 28 patients (8 to 52 years old) with proved testicular tumors using Tc-99m MDP (750 MBq; 20 mCi) injected intravenously. Whole-body images were obtained 2 hours later, at 500,000 counts per image. Radiographic studies were obtained to investigate abnormal areas noted on scintigraphy. RESULTS The results of bone scintigraphy were abnormal in seven cases, consisting of variable but diffuse uptake in the iliac bone on the same side as the affected testicle. MDP uptake was substantial in five of these patients (four seminomas, one nonseminoma; only two radiographic studies were abnormal), and the two other patients had moderate uptake of the radiopharmaceutical (two seminomas; radiographic studies were normal). Metastases were confirmed by biopsy in three cases. DISCUSSION Early metastases from seminomas can occur through the lymphatic drainage toward the iliac lymph node chain. This could explain these findings. The scintigraphic aspects of the affected iliac bones seem characteristic. CONCLUSIONS Early detection of metastases is very important to ensure the efficacy of radiotherapy and chemotherapy. Bone scintigraphy may play an important role in such cases and seems to be more sensitive than conventional radiography. Testicular tumor metastases should be considered when iliac involvement is observed. Paget's disease should be included in a differential diagnosis.
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Affiliation(s)
- F J Braga
- Department of Physics and Biophysics, the Bio-Science Institute, UNESP, Botucatu, Brazil.
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Kotra LP, Haddad J, Mobashery S. Aminoglycosides: perspectives on mechanisms of action and resistance and strategies to counter resistance. Antimicrob Agents Chemother 2000; 44:3249-56. [PMID: 11083623 PMCID: PMC90188 DOI: 10.1128/aac.44.12.3249-3256.2000] [Citation(s) in RCA: 308] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- L P Kotra
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA
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Liu M, Haddad J, Azucena E, Kotra LP, Kirzhner M, Mobashery S. Tethered bisubstrate derivatives as probes for mechanism and as inhibitors of aminoglycoside 3'-phosphotransferases. J Org Chem 2000; 65:7422-31. [PMID: 11076599 DOI: 10.1021/jo000589k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [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: 11/27/2022]
Abstract
Aminoglycoside 3'-phosphotransferases [APH(3')s] phosphorylate aminoglycoside antibiotics, a reaction that inactivates the antibiotics. These enzymes are the primary cause of resistance to aminoglycosides in bacteria. APH(3')-Ia operates by a random-equilibrium BiBi mechanism, whereas APH(3')-IIIa catalyzes its reaction by the Theorell-Chance mechanism, a form of ordered BiBi mechanism. Hence, both substrates have to be present in the active site prior to the transfer of phosphate by both mechanisms. Four bisubstrate analogues, compounds 1-4, were designed and synthesized as inhibitors for APH(3')s. These compounds are made of adenosine linked covalently to the 3'-hydroxyl of neamine (an aminoglycoside) via all-methylene tethers of 5-8 carbons. The K(i) values measured for these compounds indicated that affinities of APH(3')-Ia and APH(3')-IIa for compounds 2 and 3 (six- and seven-carbon tethers, respectively) were the best, and the inhibition constants for the two were comparable.
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Affiliation(s)
- M Liu
- Department of Chemistry and the Institute for Drug Design, Wayne State University, Detroit, Michigan 48202, USA
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Rao PS, Berger F, Rey C, Haddad J, Meier B, Walsh KP, Chandar JS, Lloyd TR, de Lezo JS, Zamora R, Sideris EB. Results of transvenous occlusion of secundum atrial septal defects with the fourth generation buttoned device: comparison with first, second and third generation devices. International Buttoned Device Trial Group. J Am Coll Cardiol 2000; 36:583-92. [PMID: 10933375 DOI: 10.1016/s0735-1097(00)00725-7] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [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: 10/17/2022]
Abstract
OBJECTIVES The purpose of this study was to assess safety and effectiveness of the fourth generation buttoned device in dosing atrial septal defects (ASDs) and to test the hypothesis that introduction of double button reduces unbuttoning rate without reducing effectiveness. BACKGROUND Because of the high unbuttoning rate (7.2%) with first, second and third generation buttoned devices, the device was modified (fourth generation) so that there were two radiopaque spring buttons 4 mm apart on the button loop attached to the occluder. METHODS During a four-year period ending in September 1997, 423 patients, ages 1.5 to 80 years (median 16 years), underwent closure of ASD at 40 medical centers around the world. RESULTS The ASD size varied between 5 and 30 mm (median 17 mm). The device size varied between 25 and 60 mm. Unbuttoning occurred in 4 (0.9%) of 423 patients. Effective occlusion, defined as no (n = 343) or trivial (n = 34) residual shunt on echo-Doppler studies performed within 24 h of the procedure, was demonstrated in 377 patients (90%). Thus, the unbuttoning rate (0.9 vs. 7.2%) decreased (p<0.01) while effective occlusion rate (90 vs. 92%) remained unchanged (p>0.1) with this device, compared with earlier generation devices. During follow-up from one month to five years (23+/-15 months), 21 (5%) of 417 patients required surgical (n = 12) or transcatheter (n = 9) reintervention, mostly to treat significant residual shunt. In the remaining patients there was gradual reduction and disappearance of the residual shunt. No wire integrity problems were observed. CONCLUSIONS These data suggest that the fourth generation buttoned device is as effective as earlier generation devices, but without significant unbuttoning. Follow-up results remained good, with a reintervention-free rate of 89% at five years.
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Affiliation(s)
- P S Rao
- Division of Pediatric Cardiology, Saint Louis University School of Medicine, Missouri 63104-1095, USA.
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Haddad J. [Therapeutic alternatives in neonatology: towards a reduction of the cost of prematurity]. Arch Pediatr 2000; 6 Suppl 2:278s-280s. [PMID: 10370507 DOI: 10.1016/s0929-693x(99)80439-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Haddad
- Service de néonatologie, Hôpital Saint-Georges, Université libanaise, Liban
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Haddad J, Saiman L, San Gabriel P, Chin NX, Whittier S, Deeter RG, Takoudes TG, Keller JL, Della-Latta P. Nonsusceptible Streptococcus pneumoniae in children with chronic otitis media with effusion and recurrent otitis media undergoing ventilating tube placement. Pediatr Infect Dis J 2000; 19:432-7. [PMID: 10819339 DOI: 10.1097/00006454-200005000-00008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
CONTEXT Children with chronic otitis media are at risk for nonsusceptible Streptococcus pneumoniae (NSP) infection. If these children undergo ventilating tube placement, there is an opportunity to culture middle ear fluid and the nasopharynx to determine carriage of NSP. OBJECTIVE To determine the incidence of NSP carriage, NSP antibiotic susceptibility and risk factors for NSP carriage in children with chronic otitis media undergoing tube placement. DESIGN AND SETTING Prospective cohort study in an academic medical center with recruitment of patients from an otolaryngology private practice and clinic. PATIENTS Children < 18 years of age undergoing tube placement for chronic otitis media. INTERVENTIONS Myringotomy and tube placement, with culture of middle ear fluid and nasopharynx. MAIN OUTCOME MEASURES The incidence of NSP cultured from the middle ears and nasopharynx of recruited subjects with the use of the minimum inhibitory concentration break points for penicillin susceptibility recommended by the National Committee for Clinical Laboratory Standards. RESULTS S. pneumoniae was identified in at least 1 site from 23 of 300 study subjects (7.6%); of these 23, 12 case subjects (52.2%) harbored NSP. Of the risk factors assessed by preoperative questionnaire, only younger age was associated with NSP colonization (P < 0.0001). Of the six oral cephalosporins studied, cefpodoxime and cefuroxime showed good in vitro activity against S. pneumoniae isolates with intermediate penicillin resistance. CONCLUSIONS Children with chronic otitis media undergoing tube placement may carry NSP and provide a means of monitoring the incidence of NSP and antibiotic susceptibilities for children with ear infections in their communities. Younger age is a risk factor for NSP carriage in this population.
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Affiliation(s)
- J Haddad
- Division of Pediatric Otolaryngology/Head and Neck Surgery, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
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Abstract
Acoustic waves in a pipe with polymeric liquid are investigated within a quasi-one-dimensional approach. Analysis of the dispersion equation has shown that rheological features lead to essential changes in both attenuation and speed of the sound. The results may find application in acoustic rheometry of polymeric liquids and for modeling of fast dynamic processes in polymer production technology.
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Affiliation(s)
- S Levitsky
- Negev Academic College of Engineering, Beer-Sheva, Israel.
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