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Spindler L, Etienney I, Abramowitz L, de Parades V, Pigot F, Siproudhis L, Adam J, Balzano V, Bouchard D, Bouta N, Bucau M, Carlo A, Chanal J, Charpentier C, Clifford G, Draullette M, Fathallah N, Ferré V, Fléjou JF, Fouéré S, Higuero T, Kassouri L, Kurt S, Laurain A, Leclerc E, Lepiller Q, Lesage AC, Mège D, Ménard A, Merle P, Mortreux P, Noël C, Péré H, Prétet JL, Roland D, Staumont G, Tracanelli L, Vuitton L, Wylomanski S, Zaegel-Faucher O. Screening for precancerous anal lesions linked to human papillomaviruses: French recommendations for clinical practice. Tech Coloproctol 2024; 28:23. [PMID: 38198036 PMCID: PMC10781838 DOI: 10.1007/s10151-023-02899-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/01/2023] [Indexed: 01/11/2024]
Abstract
In France, about 2000 new cases of anal cancer are diagnosed annually. Squamous cell carcinoma is the most common histological type, mostly occurring secondary to persistent HPV16 infection. Invasive cancer is preceded by precancerous lesions. In addition to patients with a personal history of precancerous lesions and anal cancer, three groups are at very high risk of anal cancer: (i) men who have sex with men and are living with HIV, (ii) women with a history of high-grade squamous intraepithelial lesions (HSILs) or vulvar HPV cancer, and (iii) women who received a solid organ transplant more than 10 years ago. The purpose of screening is to detect HSILs so that they can be treated, thereby reducing the risk of progression to cancer. All patients with symptoms should undergo a proctological examination including standard anoscopy. For asymptomatic patients at risk, an initial HPV16 test makes it possible to target patients at risk of HSILs likely to progress to cancer. Anal cytology is a sensitive test for HSIL detection. Its sensitivity is greater than 80% and exceeds that of proctological examination with standard anoscopy. It is indicated in the event of a positive HPV16 test. In the presence of cytological abnormalities and/or lesions and a suspicion of dysplasia on clinical examination, high-resolution anoscopy is indicated. Performance is superior to that of proctological examination with standard anoscopy. However, this technique is not widely available, which limits its use. If high-resolution anoscopy is not possible, screening by a standard proctological examination is an alternative. There is a need to develop high-resolution anoscopy and triage tests and to evaluate screening strategies.
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Laurain A, Bouchard D, Rouillon JM, Petit P, Liddo A, Vinson Bonnet B, Venara A, Didelot JM, Bonnaud G, Senéjoux A, Higuero T, Delasalle P, Tarrerias AL, Devulder F, Castinel A, Thomas C, Pillant Le Moult H, Favreau-Weltzer C, Abramowitz L. French multicentre prospective evaluation of radiofrequency ablation in the management of haemorrhoidal disease. Tech Coloproctol 2023; 27:873-883. [PMID: 37005961 PMCID: PMC10485119 DOI: 10.1007/s10151-023-02787-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/14/2023] [Indexed: 04/04/2023]
Abstract
PURPOSE The aim of this study was to evaluate the efficacy and safety of radiofrequency ablation (RFA) in the management of haemorrhoidal disease with 1 year's follow-up. METHOD This prospective multicentre study assessed RFA (Rafaelo©) in outpatients with grade II-III haemorrhoids. RFA was performed in the operating room under locoregional or general anaesthesia. Primary endpoint was the evolution of a quality-of-life score adapted to the haemorrhoid pathology (HEMO-FISS-QoL) 3 months after surgery. Secondary endpoints were evolution of symptoms (prolapsus, bleeding, pain, itching, anal discomfort), complications, postoperative pain and medical leave. RESULTS A total of 129 patients (69% men, median age 49 years) were operated on in 16 French centres. Median HEMO-FISS-QoL score dropped significantly from 17.4/100 to 0/100 (p < 0.0001) at 3 months. At 3 months, the rate of patients reporting bleeding (21% vs. 84%, p < 0.001), prolapse (34% vs. 91.3%, p < 0.001) and anal discomfort (0/10 vs. 5/10, p < 0.0001) decreased significantly. Median medical leave was 4 days [1-14]. Postoperative pain was 4/10, 1/10, 0/10 and 0/10 at weeks 1, 2, 3 and 4. Seven patients (5.4%) were reoperated on by haemorrhoidectomy for relapse, and three for complications. Reported complications were haemorrhage (3), dysuria (3), abscess (2), anal fissure (1), external haemorrhoidal thrombosis (10), pain requiring morphine (11). Degree of satisfaction was high (+ 5 at 3 months on a - 5/+ 5 scale). CONCLUSION RFA is associated with an improvement in quality of life and symptoms with a good safety profile. As expected for minimally invasive surgery, postoperative pain is minor with short medical leave. CLINICAL TRIAL REGISTRATION AND DATE Clinical trial NCT04229784 (18/01/2020).
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Williams DY, Hall WJ, Dawes HC, Srivastava A, Radtke SR, Ramon M, Bouchard D, Chen WT, Goldbach JT. Relationships between internalized stigma and depression and suicide risk among queer youth in the United States: a systematic review and meta-analysis. Front Psychiatry 2023; 14:1205581. [PMID: 37547195 PMCID: PMC10399219 DOI: 10.3389/fpsyt.2023.1205581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/30/2023] [Indexed: 08/08/2023] Open
Abstract
Background Queer youth experience high rates of depression and suicidality. These disparities stem from stigma-based stressors, including internalized stigma (i.e., negative social views that minoritized individuals internalize about their own identity). Given the importance of this factor in understanding mental health disparities among queer youth, we completed a systematic review and meta-analysis examining the relationships between internalized stigma and outcomes of depression and suicide risk (i.e., suicidal ideation, non-suicidal self-injury, and suicidal behavior). Methods We followed the PRISMA standards. Six bibliographic databases were searched for studies in the United States from September 2008 to March 2022. Dual independent screening of search results was performed based on a priori inclusion criteria. Results A total of 22 studies were included for data extraction and review. Most studies examined general internalized homophobia, with few examining internalized biphobia or transphobia. Many studies examined depression as an outcome, few studies examined suicidal ideation or behavior, and no studies examined non-suicidal self-injury. Meta-analyses model results show the association between general internalized queer stigma and depressive symptoms ranged r = 0.19, 95% CI [0.14, 0.25] to r = 0.24, 95% CI [0.19, 0.29], the latter reflecting more uniform measures of depression. The association between internalized transphobia and depressive outcomes was small and positive (r = 0.21, 95% CI [-0.24, 0.67]). General internalized queer stigma and suicidal ideation had a very weak positive association (r = 0.07, 95% CI [-0.27, 0.41]) and an even smaller, weaker positive association with suicide attempt (r = 0.02, 95% CI [0.01, 0.03]). Conclusion Implications for clinical practice, policy, and future research are discussed.
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Shams M, Mansukhani N, Hersam MC, Bouchard D, Chowdhury I. Environmentally sustainable implementations of two-dimensional nanomaterials. Front Chem 2023; 11:1132233. [PMID: 36936535 PMCID: PMC10020365 DOI: 10.3389/fchem.2023.1132233] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Rapid advancement in nanotechnology has led to the development of a myriad of useful nanomaterials that have novel characteristics resulting from their small size and engineered properties. In particular, two-dimensional (2D) materials have become a major focus in material science and chemistry research worldwide with substantial efforts centered on their synthesis, property characterization, and technological, and environmental applications. Environmental applications of these nanomaterials include but are not limited to adsorbents for wastewater and drinking water treatment, membranes for desalination, and coating materials for filtration. However, it is also important to address the environmental interactions and implications of these nanomaterials in order to develop strategies that minimize their environmental and public health risks. Towards this end, this review covers the most recent literature on the environmental implementations of emerging 2D nanomaterials, thereby providing insights into the future of this fast-evolving field including strategies for ensuring sustainable development of 2D nanomaterials.
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Bouchard D, Pigot F, de Parades V, Staumont G, Abramowitz L, Siproudhis L, Bouchard D, Pigot F, de Parades V, Staumont G, Abramowitz L, Siproudhis L, Tracanelli L, Fathallah N, Babin-Pigot E, Ferry M, Bouguen G, Laharie D, Cotte E, Panis Y, Peyrin-Biroulet L, Roblin X, Zerbib P. Management of perianal fistulas in Crohn’s disease: a 2021 update of the French National Society of Coloproctology consensus. Tech Coloproctol 2022; 26:805-811. [DOI: 10.1007/s10151-022-02678-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 07/29/2022] [Indexed: 11/28/2022]
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Boudiaf R, Bouchard D, Rivière P, Brochard C, Laharie D, Abramowitz L, Pigot F. Assessment of sexual dysfunction in patients with perianal Crohn's disease. Colorectal Dis 2021; 23:114-122. [PMID: 32961618 DOI: 10.1111/codi.15375] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 08/02/2020] [Accepted: 08/22/2020] [Indexed: 12/14/2022]
Abstract
AIM Over the past 10 years, several studies have focused on sexuality in patients with Crohn's disease. Very few of them specifically focused on perianal disease (PD). This study aimed to compare the prevalence of sexual dysfunction (SD) in Crohn's disease patients with active PD versus controls without active PD. METHOD Patients from 14 French centres with active PD, defined by the presence of symptomatic ulceration, fistula or stenosis, were arbitrarily included. They were compared with controls from the existing SEXIA cohort. Men completed the International Index of Erectile Function (IIEF) and women the Female Sexual Function Index (FSFI). The primary end-point was SD defined by FSFI < 26.55 in women and IIEF < 42.9 in men. RESULTS Ninety-seven patients (64 women, 33 men) and 238 controls (131 women, 107 men) were included. SD was found in 66% of the female patients versus 50% of the controls (P = 0.04). In the male population, SD was found in 30% of the cases versus 16% of the controls (P = 0.06). Erectile dysfunction affected 46% of the male patients and 43% of the controls (P = 0.8). On multivariate analysis, the predictive factor most strongly associated with SD in women was severely active anal PD defined by a perineal disease activity index > 4 [OR = 13.05 (2.32-73.44)]. CONCLUSION Women with active PD had an increased prevalence of SD compared with controls without active PD. In the male population, the study was unable to determine whether there was a difference as it was underpowered.
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Chan V, Mazer C, Mesana T, De Varennes B, Gregory A, Bouchard D, Zuo F, Mohamad Ali F, Tsang W, Latter D, Juni P, Teoh H, Quan A, Leong-Poi H, Verma S. A randomized surgical trial of mitral valve repair with leaflet resection versus leaflet preservation on functional mitral stenosis – primary results of the CAMRA CardioLink-2 trial. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The gold standard treatment for mitral valve regurgitation due to prolapse involves surgery with annuloplasty and either leaflet resection or leaflet preservation, with placement of artificial neochordae. It has been suggested that leaflet resection may be prone to functional mitral stenosis, whereby a patient may have a higher mitral gradient at peak exercise compared to a leaflet preservation strategy. Although both techniques are widely used, there has been no prospective randomized study conducted to compare these two techniques, particularly in regard to functional mitral stenosis.
Methods
A total of 104 patients with posterior leaflet prolapse were randomized to undergo mitral repair with either leaflet resection (N=54) or leaflet preservation (N=50) at 7 specialized Canadian cardiac centers. Patient age, proportion of female patients, and mean Society of Thoracic Surgeons risk score was 63.9±10.4 years, 19%, and 1.4% for those who underwent leaflet resection, and 66.3±10.8 years, 16%, and 1.9% for those who underwent leaflet preservation, respectively. The primary endpoint was the mean trans-mitral repair gradient at peak exercise 12-months after repair.
Results
Baseline characteristics were similar between the groups. At 12-months, the mean trans-mitral repair gradient at peak exercise in patients who underwent leaflet resection and preservation was 9.1±5.2 and 8.3±3.3 mmHg (P=0.4), respectively. The two groups had similar mean mitral valve gradient at rest (3.2±1.9 mmHg following resection and 3.1±1.1 mmHg following leaflet preservation, P=0.7). There was no between-group difference for the 6-minute walk distance (451±147 m and 481±95 m for the resection and preservation groups, respectively, P=0.3).
Conclusion
We report the first prospective surgical randomized trial to evaluate commonly used mitral valve repair strategies for posterior leaflet prolapse. Leaflet resection and leaflet preservation both yield acceptable results with no difference in postoperative valve gradient and functional status 12-months after surgical mitral valve repair.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Heart and Stroke Foundation of Canada
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Molina-Romo A, Bouchard D, Pellerin M. ROBOTIC MITRAL VALVE REPAIR: SINGLE INSTITUTION EXPERIENCE. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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St-Onge S, Bouhout I, Bouchard D, Carrier M, Cartier R, El-Hamamsy I, Jeanmart H, Lamarche Y, Pellerin M, Perrault L, Demers P. RE-EXPLORATION AND ECONOMIC JUSTIFICATION OF A CHEST DRAINAGE PROTOCOL IMPLEMENTING ACTIVE TUBE CLEARANCE AFTER CARDIAC SURGERY. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Mazine A, Arias-Vézina G, Bouhout I, Maftoon S, Stevens L, Demers P, Pellerin M, Bouchard D. MINIMALLY INVASIVE MITRAL VALVE SURGERY IS ASSOCIATED WITH A LOWER INCIDENCE OF ACUTE KIDNEY INJURY. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Revelli L, Bouchard D, Bouhout I, Pellerin M. LEFT VENTRICULAR APEX FIBROELASTOMA. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Mazine A, Tamirat S, Agwar F, Dejene K, Bedru M, Demisie A, Lebon J, Bouchard D. CONTEMPORARY OUTCOMES OF AORTIC AND MITRAL VALVE SURGERY FOR RHEUMATIC HEART DISEASE IN SUB-SAHARAN AFRICA. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Chauvette V, Accad AJ, Georges G, Bouhout I, Garceau P, L'Allier P, Bouchard D. WHAT DOES GENETIC TESTING TELL US ABOUT OUTCOMES IN PATIENTS UNDERGOING SEPTAL MYECTOMY FOR HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHY? Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Geffrier C, de Parades V, Abramowitz L, Benfredj P, Bonnaud G, Bord C, Bouchard D, Bouguen G, Devulder F, Didelot JM, Fathallah N, Higuero T, Lesage X, Nouts A, Petit P, Pigot F, Pommaret E, Roumeguere P, Siproudhis L, Staumont G, Zeitoun JD, Marteau P. Online training on how to diagnose anoperineal lesions of Crohn's disease: Do pictures matter? A nationwide randomized study. Clin Res Hepatol Gastroenterol 2019; 43:483-496. [PMID: 30935906 DOI: 10.1016/j.clinre.2018.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 12/03/2018] [Indexed: 02/04/2023]
Abstract
UNLABELLED Any gastroenterologist must be trained to properly diagnose anoperineal lesions in patients with Crohn's disease (APLOC). The aim of this study was to establish whether adding pictures would improve teaching effectiveness of the diagnosis of APLOC to French gastroenterology trainees. METHOD Trainees were asked to answer a first web-based survey consisting of evaluating 12 pictures of APLOC with a closed answer questionnaire. They were then randomized in 2 groups. Group A received an online teaching with typical pictures and APLOC definitions and group B definitions only. Trainees were asked again seven days later to answer a second survey with 12 other pictures of APLOC and 14 experts also answered this survey. Diagnostic scores were expressed in %. The primary endpoint was the comparison of the score of survey 2 between the two groups of trainees. Secondary endpoints were to compare results of survey 2 between trainees of both groups and experts, and assess diagnosis of each lesion. RESULTS Two hundred fourty eight trainees among 465 answered survey 1, and 195 survey 2. The diagnostic score was 71.9% for groups A and B and 74.6% for experts (differences NS). After training diagnosis of ulceration was 72% for group A and 72.9% for group B, fistulae 85.2% versus 85.8%, erythema 44.1% vs. 55.6%, anoperineal scars 67.5% vs. 65.6%, and abscess 100% (differences NS). CONCLUSION There was no difference between the two teaching methods. Further research should be performed aiming at improving teaching material and quotation baremes.
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Bouchard D, Brochard C, Vinson-Bonnet B, Staumont G, Abramowitz L, Benfredj P, Fathallah N, Faucheron JL, Higuero T, Panis Y, de Parades V, Siproudhis L, Laharie D, Pigot F. How to manage anal ulcerations and anorectal stenosis in Crohn's disease: algorithm-based decision making : French National Working Group Consensus 2018. Tech Coloproctol 2019; 23:353-360. [PMID: 30937646 DOI: 10.1007/s10151-019-01971-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 03/14/2019] [Indexed: 12/24/2022]
Abstract
The French National Society of Coloproctology established national recommendations for the treatment of anoperineal lesions associated with Crohn's disease. Treatment strategies for anal ulcerations and anorectal stenosis are suggested. Recommendations have been graded following international recommendations, and when absent professional agreement was established. For each situation, practical algorithms have been drawn.
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Bouchard D, Pigot F, Staumont G, Siproudhis L, Abramowitz L, Benfredj P, Brochard C, Fathallah N, Faucheron JL, Higuero T, Panis Y, de Parades V, Vinson-Bonnet B, Laharie D. Management of anoperineal lesions in Crohn's disease: a French National Society of Coloproctology national consensus. Tech Coloproctol 2019; 22:905-917. [PMID: 30604249 DOI: 10.1007/s10151-018-1906-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 12/07/2018] [Indexed: 12/11/2022]
Abstract
The French National Society of Coloproctology established national recommendations for the treatment of anoperineal lesions associated with Crohn's disease. Treatment strategies for acute abscesses, active fistulas (active denovo and still active under treatment), fistulas in remission, and rectovaginal fistulas are suggested. Recommendations have been graded following the international recommendations, and when absent, professional agreement has been established. For each situation, practical algorithms have been drawn.
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Han Y, Knightes CD, Bouchard D, Zepp R, Avant B, Hsieh HS, Chang X, Acrey B, Henderson WM, Spear J. Simulating graphene oxide nanomaterial phototransformation and transport in surface water. ENVIRONMENTAL SCIENCE. NANO 2019; 6:180-194. [PMID: 31297195 PMCID: PMC6621605 DOI: 10.1039/c8en01088a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The production of graphene-family nanomaterials (GFNs) has increased appreciably in recent years. Graphene oxide (GO) has been found to be the most toxic nanomaterial among GFNs and, to our knowledge, no studies have been conducted to model its fate and transport in the environment. Lab studies show that GO undergoes phototransformation in surface waters under sunlight radiation resulting in formation of photoreduced GO (rGO). In this study, the recently updated Water Quality Analysis Simulation Program (WASP8) is used to simulate time-dependent environmental exposure concentrations of GO and its major phototransformation product, rGO, for Brier Creek, GA, USA at two flow scenarios under a constant loading of GO to the river for a period of 20 years. Analysis shows that the degree of phototransformation is closely associated with river flow condition: up to of 40% of GO undergoes phototransformation at low flow condition, whereas only 2.5% of GO phototransformation occurs at mean flow condition. River flow and heteroaggregation exhibit a 'competing' effect in determining the formation of rGO heteroagglomerates. Mass fraction analysis indicates that the vast majority of rGO heteroagglomerates settle to the sediment layers due to the settling of suspended solids. Simulation of natural recovery after removal of the GO source suggests that free GO and rGO are the immediate contaminants of concern in the studied surface water system, while rGO heteroaggregated with suspended solids can have a long-term ecological impact on both the water column and sediments.
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Abramowitz L, Bouchard D, Siproudhis L, Trompette M, Pillant H, Bord C, Senejoux CA, Favreau‐Weltzer C, Berdeaux G, Zkik A. Psychometric properties of a questionnaire (HEMO-FISS-QoL) to evaluate the burden associated with haemorrhoidal disease and anal fissures. Colorectal Dis 2019; 21:48-58. [PMID: 30171745 PMCID: PMC7379620 DOI: 10.1111/codi.14393] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 07/16/2018] [Indexed: 12/13/2022]
Abstract
AIM Current questionnaires designed to evaluate the burden of haemorrhoidal disease ignore symptoms such as bleeding, pain and itching. A specific questionnaire is needed to evaluate the global impact of anal disorders on patients' daily lives. METHOD We developed a questionnaire (HEMO-FISS-QoL) to assess the symptom burden of anal disorders and administered it to 256 patients (mean age 46.2 years; men 60.4%) with haemorrhoidal disease (67.2%), anal fissure (29.3%) or both (3.5%). Psychometric properties were evaluated by testing the acceptability, construct validity and reliability of the questionnaire. Principal components and multi-trait analyses were used to identify dimensions and to assess construct validity. Backward Cronbach alpha curves and a graded response model were used to reduce the number of items and modalities. External validity was evaluated against SF-12 and the Psychological Global Well-Being Index (PGWBI) using Spearman's correlation coefficient. RESULTS Principal component analysis defined four dimensions: physical disorders, psychology, defaecation and sexuality. The number of questions was reduced from 38 to 23. The HEMO-FISS-QoL scores correlated well with those of the SF-12 and PGWBI (P < 0.001). Cronbach's coefficients (all > 0.7) reflected good internal reliability of the different dimensions. The total score increased with the severity of the anal disorders and with their consequences (days off work and personal spending related to the disease). CONCLUSION The HEMO-FISS-QoL questionnaire reliably evaluates the global impact of haemorrhoids and anal fissures on patients' daily lives. This simple tool may prove useful for treatment evaluation in clinical trials and daily practice.
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Avant B, Bouchard D, Chang X, Hsieh HS, Acrey B, Han Y, Spear J, Zepp R, Knightes CD. Environmental fate of multiwalled carbon nanotubes and graphene oxide across different aquatic ecosystems. NANOIMPACT 2019; 13:1-12. [PMID: 31297468 PMCID: PMC6621604 DOI: 10.1016/j.impact.2018.11.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The industrial use and widespread application of carbon-based nanomaterials have caused a rapid increase in their production over the last decades. However, toxicity of these materials is not fully known and is still being investigated for potential human and ecological health risks. Detecting carbon-based nanomaterials in the environment using current analytical methods is problematic, making environmental fate and transport modeling a practical way to estimate environmental concentrations and assess potential ecological risks. The Water Quality Analysis Simulation Program 8 (WASP8) is a dynamic, spatially resolved fate and transport model for simulating exposure concentrations in surface waters and sediments. Recently, WASP has been updated to incorporate processes for simulating the fate and transport of nanomaterials including heteroaggregation and phototransformation. This study examines the fate and transport of multiwalled carbon nanotubes (MWCNT), graphene oxide (GO) and reduced graphene oxide (rGO) in four aquatic ecosystems in the southeastern United States. Sites include a seepage lake, a coastal plains river, a piedmont river and an unstratified, wetland lake. A hypothetical 50-year release is simulated for each site-nanomaterial pair to analyze nanomaterial distribution between the water column and sediments. For all nanomaterials, 99% of the mass loaded moves though systems of high and low residence times without being heteroaggregated and deposited in the sediments. However, significant accumulation in the sediments does occur over longer periods of time. Results show that GO and rGO had the highest mass fraction in the water column of all four sites. MWCNT were found predominantly in the sediments of the piedmont river and seepage lake but were almost entirely contained in the water column of the coastal plains river and wetland lake. Simulated recovery periods following the release estimate 37+ years for lakes and 1-4 years for rivers to reduce sediment nanomaterial concentrations by 50% suggesting that carbon-based nanomaterials have the potential for long-term ecological effects.
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Marín SL, Mancilla J, Hausdorf MA, Bouchard D, Tudor MS, Kane F. Sensitivity assessment of sea lice to chemotherapeutants: Current bioassays and best practices. JOURNAL OF FISH DISEASES 2018; 41:995-1003. [PMID: 29251354 DOI: 10.1111/jfd.12768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/27/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
Traditional bioassays are still necessary to test sensitivity of sea lice species to chemotherapeutants, but the methodology applied by the different scientists has varied over time in respect to that proposed in "Sea lice resistance to chemotherapeutants: A handbook in resistance management" (2006). These divergences motivated the organization of a workshop during the Sea Lice 2016 conference "Standardization of traditional bioassay process by sharing best practices." There was an agreement by the attendants to update the handbook. The objective of this article is to provide a baseline analysis of the methodology for traditional bioassays and to identify procedures that need to be addressed to standardize the protocol. The methodology was divided into the following steps: bioassay design; material and equipment; sea lice collection, transportation and laboratory reception; preparation of dilution; parasite exposure; response evaluation; data analysis; and reporting. Information from the presentations of the workshop, and also from other studies, allowed for the identification of procedures inside a given step that need to be standardized as they were reported to be performed differently by the different working groups. Bioassay design and response evaluation were the targeted steps where more procedures need to be analysed and agreed upon.
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Bouchard D, Knightes C, Chang X, Avant B. Simulating Multiwalled Carbon Nanotube Transport in Surface Water Systems Using the Water Quality Analysis Simulation Program (WASP). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:11174-11184. [PMID: 28876918 DOI: 10.1021/acs.est.7b01477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Under the Toxic Substances Control Act (TSCA), the Environmental Protection Agency (EPA) is required to perform new chemical reviews of nanomaterials identified in premanufacture notices. However, environmental fate models developed for traditional contaminants are limited in their ability to simulate nanomaterials' environmental behavior by incomplete understanding and representation of the processes governing nanomaterial distribution in the environment and by scarce empirical data quantifying the interaction of nanomaterials with environmental surfaces. In this study, the well-known Water Quality Analysis Simulation Program (WASP) was updated to incorporate particle collision rate and particle attachment efficiency to simulate multiwalled carbon nanotube (MWCNT) fate and transport in surface waters. Heteroaggregation attachment efficiencies (αhet) values derived from sediment attachment studies are used to parametrize WASP for simulation of MWCNTs transport in Brier Creek, a coastal plain river located in central eastern Georgia, and a tributary to the Savannah River. Simulations using a constant MWCNT load of 0.1 kg d-1 in the uppermost Brier Creek water segment showed that MWCNTs were present predominantly in the Brier Creek water column, while downstream MWCNT surface and deep sediment concentrations exhibited a general increase with time and distance from the source, suggesting that MWCNT releases could have increasing ecological impacts in the benthic region over long time frames.
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Hamad R, Noly P, Bouchard D, Carrier M, El Hamamsy I, Lamarche Y, Pellerin M, Perrault L, Demers P. MODELING THE CARDIAC SURGERY WORKFORCE AND DEMAND IN QUÉBEC. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Ben-ali W, Bouhout I, Lambert J, Bouchard D, Carrier M. PREVALENCE AND IMPACT OF DE NOVO AORTIC INSUFFICIENCY DURING LONG-TERM SUPPORT ON A LEFT VENTRICULAR ASSIST DEVICE: A SYSTEMATIC REVIEW AND META-ANALYSIS. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Ben-ali W, Bouhout I, Khairy P, Bouchard D, Poirier N. EXTRACARDIAC VERSUS LATERAL TUNNEL FONTAN: A META-ANALYSIS OF LONG-TERM RESULTS WITH SPECIAL FOCUS ON ARRHYTHMIAS. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Mazine A, Bouhout I, Saydy N, Stevens L, Gagné-Loranger M, Lamarche Y, Bouchard D. RELATIVE ADRENAL INSUFFICIENCY IS ASSOCIATED WITH PROLONGED POSTOPERATIVE HEMODYNAMIC INSTABILITY IN PATIENTS UNDERGOING CARDIAC SURGERY. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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