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Wagner L, Mannas R, Traina O. GENERATION TO GENERATION: LESSONS LEARNED FROM AN INTERGENERATIONAL COLLEGE SOCIAL CLUB. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Le Normand L, Cosson M, Cour F, Deffieux X, Donon L, Ferry P, Fatton B, Hermieu JF, Marret H, Meurette G, Cortesse A, Wagner L, Fritel X. Clinical Practice Guidelines: Synthesis of the guidelines for the surgical treatment of primary pelvic organ prolapse in women by the AFU, CNGOF, SIFUD-PP, SNFCP, and SCGP. J Gynecol Obstet Hum Reprod 2017; 46:387-391. [DOI: 10.1016/j.jogoh.2017.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 05/10/2017] [Indexed: 11/26/2022]
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Flórez KR, Richardson AS, Ghosh-Dastidar MB, Beckman R, Huang C, Wagner L, Dubowitz T. Improved parental dietary quality is associated with children's dietary intake through the home environment. Obes Sci Pract 2017; 3:75-82. [PMID: 28392933 PMCID: PMC5358079 DOI: 10.1002/osp4.81] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/30/2016] [Accepted: 10/08/2016] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Improving access to supermarkets has been shown to improve some dietary outcomes, yet there is little evidence for such effects on children. Relatedly, there is a dearth of research assessing the impact of a structural change (i.e. supermarket in a former food desert) on the home environment and its relationship with children's diet. OBJECTIVE Assess the relative impact of the home environment on children's diet after the introduction of a new supermarket in a food desert. METHODS Among a randomly selected cohort of households living in a food desert, parental diet was assessed before and after the opening of a full-service supermarket. The home environment and children's intake of fruits and vegetables was measured at one point - after the store's opening. Structural equation models were used to estimate the pathways between changes in parental dietary quality at follow-up and children's dietary intake through the home environment. RESULTS Parental dietary improvement after the supermarket opened was associated with having a better home environment (β = 0.45, p = 0.001) and with healthier children's dietary intake (β = 0.46, p < 0.001) through higher family nutrition and physical activity scores (β = 0.25, p = 0.02). CONCLUSIONS Policy solutions designed to improve diet among low-resource communities should take into account the importance of the home environment.
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Dieperink K, Johansen C, Hansen S, Wagner L, Andersen K, Minet L, Hansen O. Three year follow-up data after RePCa – a randomised rehabilitation study among radiated prostate cancer patients. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30642-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gyürky G, Csik A, Mátyus Z, Fülöp Z, Halász Z, Kiss G, Szücs T, Wagner L. Target characterizations for a 14N(p, γ) 15O cross section measurement. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201716501027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Leizour B, Chevrot A, Wagner L, Droupy S, Costa P. [Adjustable retropubic suburethral sling Remeex ® in the treatment of male stress urinary incontinence: One-year results]. Prog Urol 2016; 27:238-243. [PMID: 28043779 DOI: 10.1016/j.purol.2016.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/23/2016] [Accepted: 11/28/2016] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate the efficacy and safety of the adjustable suburethral sling Remeex® in the treatment of male stress urinary incontinence (SUI). PATIENTS AND METHODS Single-center prospective study of patients treated for SUI after radical prostatectomy or transurethral resection of prostate. The severity of incontinence was evaluated by the number of pads used per day. Success rate, complications and number of adjustments were studied. RESULTS From February 2011 to May 2015, Remeex® was implanted in 25 patients. The average preoperative number of pads used per day was 3,8 (±1,8). Sling tension has been adjusted the day after surgery in all patients. Mean follow-up was 31 months (±15). During follow-up, 6 patients did not need any readjustment (24%) and 15 patients (60%) had to be readjusted. One Remeex system had to be completely removed because of a sub-occlusive syndrome. Three patients had early infection requiring partial system removal (Varitensor). At the end of follow-up, 9 patients were cured (36%), 9 patients (36%) were significantly improved and 7 patients (28%) were not improved. Five patients are waiting for a new readjustment. CONCLUSION In this short series of patients who had prostatic surgery, at mid-term follow-up, the placement of a BSUA-R was associated with an improvement or cure of urinary incontinence symptoms in two-thirds of cases. LEVEL OF EVIDENCE 4.
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Le Normand L, Cosson M, Cour F, Deffieux X, Donon L, Ferry P, Fatton B, Hermieu JF, Marret H, Meurette G, Cortesse A, Wagner L, Fritel X. Recommandations pour la pratique clinique : synthèse des recommandations pour le traitement chirurgical du prolapsus génital non récidivé de la femme par l’AFU, le CNGOF, la SIFUD-PP, la SNFCP, et la SCGP. ACTA ACUST UNITED AC 2016; 45:1606-1613. [DOI: 10.1016/j.jgyn.2016.09.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 09/19/2016] [Indexed: 11/17/2022]
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Leizour B, Chevrot A, Wagner L, Boukaram M, Ben Naoum K, Abdo N, Martin L, Lam van Ba O, Gres P, Girier D, Siegler N, Soustelle L, Droupy S, Costa P. Bandelette sous-urétrale rétropubienne ajustable Remeex® dans le traitement de l’incontinence urinaire d’effort masculine : résultats à un an. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Schaper F, Zhao Y, Wagner L, Colon A, van Kranen-Mastenbroek V, Gommer E, Janssen M, Ackermans L, van Wezel R, Temel Y, Heida T, Rouhl R. EP 71. Single cell firing patterns in the anterior nucleus of the thalamus relate to therapy response in deep brain stimulation for refractory epilepsy. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cheng K, Wagner L, Pickova J, Moazzami A. NMR-based metabolomics reveals compartmental metabolic heterogeneity in liver of Arctic char (Salvelinus alpinus). CAN J ZOOL 2016. [DOI: 10.1139/cjz-2016-0051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Metabolomics involves systematic study of low-molecular-mass metabolites in cells, tissues, or biofluids and is nowadays widely applied to characterize the physiological status of aquatic organisms under a set of conditions, such as disease and toxin exposure. Liver, an important metabolic center in the fish body, is often used for metabolomics analysis. Compared with the whole fish liver, the proportion of liver sample needed for metabolomics analysis is relatively small. The homogeneity of metabolites in liver is thus an important issue, especially for comparative studies and biomarker discovery. This study examined the homogeneity of the metabolic profile in liver of Arctic char (Salvelinus alpinus (L., 1758)) using a NMR-based metabolomics approach. For the analysis, whole liver samples were cut into four parts along the direction of gall bladder and at right angles to this, and metabolites in each part of the liver were extracted and analyzed by multivariate and univariate data analyses. Although the multivariate model was not significant due to variation within the data, the metabolic differences in polar portion of liver extract between the parts were seen, indicating non-homogeneity of Arctic char liver. Therefore, when sampling fish liver for further metabolomics studies, this heterogeneity should be taken into consideration.
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Chevrot A, Droupy S, Linares E, de Tayrac R, Costa P, Wagner L. Impact de la promontofixation cœlioscopique sur les symptômes pelviens, la qualité de vie et la sexualité : résultats à 3ans d’une étude prospective. Prog Urol 2016; 26:558-65. [DOI: 10.1016/j.purol.2016.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 02/21/2016] [Accepted: 02/23/2016] [Indexed: 11/26/2022]
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Chevrot A, Jaffard A, Medici M, Costa P, Wagner L, Moreau-Gaudry A, Droupy S, Voros S. [Rigid cystoscopy versus retrovision for adjustable peri-urethral balloons guidance: Comparison of precision thanks to a surgical navigation system]. Prog Urol 2016; 26:566-72. [PMID: 27473788 DOI: 10.1016/j.purol.2016.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/05/2016] [Accepted: 06/27/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The main goal of our phantom study was to compare the precision of adjustable periurethral balloons positioning depending whether the guidance was obtained by retrovision or rigid cystoscopy. MATERIAL AND METHODS A navigation guidance system was used to localize the introduction mandrel which was equipped with tracking targets. Two ideal sites of implantation were predefined and recorded into the navigation system. The two points were placed symmetrically to the phantom reproducing the urethra. Four different users were asked to position the tip of the introduction mandrel as close as possible to the ideal site of implantation with the help of each method of guidance. For each attempt, the distance (mm) between the tip of the introduction mandrel and the ideal position was recorded by the navigation system. RESULTS For each method of guidance, a total of 20 attempts on each side were made by direct puncture on one side and a symmetrical contralateral puncture. For direct puncture, the median distances were 5.20 (±3.96) and 4.38 (±1.55) mm with rigid cystoscopy and retrovision respectively (P=0.29). For symmetrical contralateral puncture, the median distance were 7,19 (±3,78) and 6,86 (±2,76) mm with rigid cystoscopy and retrovision respectively (P=0,32) CONCLUSION: This study could not demonstrate any significant difference between the two guidance systems. Nevertheless, it showed that navigation guidance system could be used to compare the precision of surgical interventions. LEVEL OF EVIDENCE 4.
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Le Normand L, Cosson M, Cour F, Deffieux X, Donon L, Ferry P, Fatton B, Hermieu JF, Marret H, Meurette G, Cortesse A, Wagner L, Fritel X. Recommandations pour la pratique clinique : Synthèse des recommandations pour le traitement chirurgical du prolapsus génital non récidivé de la femme par l´AFU, le CNGOF, la SIFUD-PP, la SNFCP et la SCGP. Prog Urol 2016; 26 Suppl 1:S1-7. [DOI: 10.1016/s1166-7087(16)30424-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Feng C, Ozus B, Thai L, Wagner L. SU-D-209-01: Can Fluoroscopic Air-Kerma Rates Be Reliably Measured with Solid-State Meters? Med Phys 2016. [DOI: 10.1118/1.4955662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Salerno J, de Tayrac R, Droupy S, Costa P, Llinares E, Fatton B, Wagner L. Impact de la promonto-fixation cœlioscopique, avec ou sans bandelette sous-urétrale, sur les symptômes du bas appareil urinaire. Prog Urol 2016; 26:401-8. [DOI: 10.1016/j.purol.2016.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 03/08/2016] [Accepted: 03/10/2016] [Indexed: 11/27/2022]
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Jones A, Pasciak A, Wagner L. SU-D-209-05: Sensitivity of the Diagnostic Radiological Index of Protection (DRIP) to Procedural Factors in Fluoroscopy. Med Phys 2016. [DOI: 10.1118/1.4955666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Klemann C, Wagner L, Stephan M, von Hörsten S. Cut to the chase: a review of CD26/dipeptidyl peptidase-4's (DPP4) entanglement in the immune system. Clin Exp Immunol 2016; 185:1-21. [PMID: 26919392 DOI: 10.1111/cei.12781] [Citation(s) in RCA: 283] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/14/2016] [Accepted: 02/21/2016] [Indexed: 12/11/2022] Open
Abstract
CD26/DPP4 (dipeptidyl peptidase 4/DP4/DPPIV) is a surface T cell activation antigen and has been shown to have DPP4 enzymatic activity, cleaving-off amino-terminal dipeptides with either L-proline or L-alanine at the penultimate position. It plays a major role in glucose metabolism by N-terminal truncation and inactivation of the incretins glucagon-like peptide-1 (GLP) and gastric inhibitory protein (GIP). In 2006, DPP4 inhibitors have been introduced to clinics and have been demonstrated to efficiently enhance the endogenous insulin secretion via prolongation of the half-life of GLP-1 and GIP in patients. However, a large number of studies demonstrate clearly that CD26/DPP4 also plays an integral role in the immune system, particularly in T cell activation. Therefore, inhibition of DPP4 might represent a double-edged sword. Apart from the metabolic benefit, the associated immunological effects of long term DPP4 inhibition on regulatory processes such as T cell homeostasis, maturation and activation are not understood fully at this stage. The current data point to an important role for CD26/DPP4 in maintaining lymphocyte composition and function, T cell activation and co-stimulation, memory T cell generation and thymic emigration patterns during immune-senescence. In rodents, critical immune changes occur at baseline levels as well as after in-vitro and in-vivo challenge. In patients receiving DPP4 inhibitors, evidence of immunological side effects also became apparent. The scope of this review is to recapitulate the role of CD26/DPP4 in the immune system regarding its pharmacological inhibition and T cell-dependent immune regulation.
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Abd El Fattah V, Chevrot A, Meusy A, Mercier G, Wagner L, Soustelle L, Boukaram M, Thuret R, Costa P, Droupy S. [Cost comparison of open and robot-assisted partial nephrectomy in treatment of renal tumor]. Prog Urol 2016; 26:295-303. [PMID: 26971674 DOI: 10.1016/j.purol.2016.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 01/18/2016] [Accepted: 02/05/2016] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Robot-assisted partial nephrectomy rapidly took on among urologists, even though studies showing its superiority over other techniques are still scarce and its costs hard to evaluate, especially in the French medical system. OBJECTIVE To evaluate the cost overrun of robot-assisted partial nephrectomy compared to that of open partial nephrectomy. EQUIPMENT AND METHODS From January 2010 to December 2013, 77 patients underwent a partial nephrectomy, 46 of which by robot-assisted laparoscopy and the remaining 31 by lombotomy. The two groups were similar in composition. Economic data regarding the staff, the consumables and the premises involved have been analyzed. RESULTS Costs are significantly higher in the NPR group (9253.21 euros vs. 7448.42 euros) due to higher consumable expenses as well as the costs pertaining to the amortization and maintenance of the robot. Yet, that difference tends to diminish as the duration of the experiment increases. No significant difference was found in warm ischemia times, operation duration and renal function a month after the operation. On the other hand, patients from the NPR group spent a significantly smaller amount of time in recovery room (159 minutes vs. 205 minutes, P=0.004), presented fewer complications and were discharged faster (6.1 days vs. 8.1 days, P=0.04). CONCLUSIONS To be profitable for the hospital in the French GHS system, robot-assisted partial nephrectomy must take place in a complex where at least 300 robot-assisted interventions are performed annually, in the framework of a hospitalization lasting four days or less, the use of a single needle holder and no systematic use of a haemostatic agent. LEVEL OF EVIDENCE 4.
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Wagner L, Klemann C, Stephan M, von Hörsten S. Unravelling the immunological roles of dipeptidyl peptidase 4 (DPP4) activity and/or structure homologue (DASH) proteins. Clin Exp Immunol 2016; 184:265-83. [PMID: 26671446 DOI: 10.1111/cei.12757] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/01/2015] [Accepted: 12/14/2015] [Indexed: 12/31/2022] Open
Abstract
Dipeptidyl peptidase (DPP) 4 (CD26, DPP4) is a multi-functional protein involved in T cell activation by co-stimulation via its association with adenosine deaminase (ADA), caveolin-1, CARMA-1, CD45, mannose-6-phosphate/insulin growth factor-II receptor (M6P/IGFII-R) and C-X-C motif receptor 4 (CXC-R4). The proline-specific dipeptidyl peptidase also modulates the bioactivity of several chemokines. However, a number of enzymes displaying either DPP4-like activities or representing structural homologues have been discovered in the past two decades and are referred to as DPP4 activity and/or structure homologue (DASH) proteins. Apart from DPP4, DASH proteins include fibroblast activation protein alpha (FAP), DPP8, DPP9, DPP4-like protein 1 (DPL1, DPP6, DPPX L, DPPX S), DPP4-like protein 2 (DPL2, DPP10) from the DPP4-gene family S9b and structurally unrelated enzyme DPP2, displaying DPP4-like activity. In contrast, DPP6 and DPP10 lack enzymatic DPP4-like activity. These DASH proteins play important roles in the immune system involving quiescence (DPP2), proliferation (DPP8/DPP9), antigen-presenting (DPP9), co-stimulation (DPP4), T cell activation (DPP4), signal transduction (DPP4, DPP8 and DPP9), differentiation (DPP4, DPP8) and tissue remodelling (DPP4, FAP). Thus, they are involved in many pathophysiological processes and have therefore been proposed for potential biomarkers or even drug targets in various cancers (DPP4 and FAP) and inflammatory diseases (DPP4, DPP8/DPP9). However, they also pose the challenge of drug selectivity concerning other DASH members for better efficacy and/or avoidance of unwanted side effects. Therefore, this review unravels the complex roles of DASH proteins in immunology.
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de Tayrac R, Haylen B, Deffieux X, Hermieu J, Wagner L, Amarenco G, Labat J, Leroi A, Billecocq S, Letouzey V, Fatton B. Traduction française de la terminologie commune International Urogynecological Association (IUGA)/International Continence Society (ICS) sur les troubles de la statique pelvienne chez la femme initialement publiée dans Int Urogynecol J 2010;21(1):5–26. Prog Urol 2016; 26:197-225. [DOI: 10.1016/j.purol.2016.01.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 01/04/2016] [Indexed: 11/24/2022]
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Connolly R, Zhao F, Miller K, Tevaarwerk A, Wagner L, Lee M, Murray J, Gray R, Piekarz R, Zujewski JA, Sparano J. Abstract OT2-01-04: E2112: Randomized phase III trial of endocrine therapy plus entinostat/placebo in patients with hormone receptor-positive advanced breast cancer. A trial of the ECOG-ACRIN cancer research group. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-ot2-01-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
A potential mechanism of resistance to endocrine therapy in breast cancer involves changes in gene expression secondary to epigenetic modifications, which might be modulated with the use of histone deacetylase (HDAC) inhibitors such as entinostat. ENCORE 301, a phase II study evaluating the addition of entinostat to the steroidal aromatase inhibitor (AI) exemestane in patients with hormone receptor (HR)-positive advanced breast cancer who had experienced disease progression after a non-steroidal AI (NSAI), showed a significant improvement in progression-free survival (PFS), and overall survival (OS). Entinostat has been designated a Breakthrough Therapy by the FDA.
Methods:
E2112 is a multicenter randomized double-blind placebo-controlled phase III study (NCT02115282) enrolling patients with advanced HR-positive, HER2-negative breast cancer with prior disease progression on a NSAI (n=600). Patients receive exemestane 25mg po daily and entinostat/placebo 5mg po every week. Eligibility: Postmenopausal women and men, ECOG 0-1, locally advanced/metastatic invasive adenocarcinoma of the breast: ER/PR-positive, HER2-negative, measurable or non-measurable (20% cap) disease. Disease progression after NSAI use in the metastatic setting OR relapse while on or within ≤ 12 months of end of adjuvant NSAI therapy.
Statistics: Both PFS (central review) and OS are primary endpoints, and the study is designed to show an improvement in either PFS or OS. Secondary endpoints include: Safety and tolerability, objective response rate, changes in lysine acetylation status in peripheral blood mononuclear cells, patient-reported symptom burden and treatment toxicities, adherence. One-sided type 1 error 0.025 split between two hypotheses tests: 0.001 for PFS test and 0.024 for OS. PFS is tested in the first 360 pts, 88.5% power to detect 42% reduction in the hazard of PFS failure (median PFS 4.1 to 7.1 months); OS is tested in all 600 pts, 80% power to detect 25% reduction in the hazard of death (median OS 22 to 29.3 months).
E2112 was activated in March 2014 and accrual is anticipated to complete in 40 months.
Citation Format: Connolly R, Zhao F, Miller K, Tevaarwerk A, Wagner L, Lee M, Murray J, Gray R, Piekarz R, Zujewski JA, Sparano J. E2112: Randomized phase III trial of endocrine therapy plus entinostat/placebo in patients with hormone receptor-positive advanced breast cancer. A trial of the ECOG-ACRIN cancer research group. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr OT2-01-04.
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Schumann-Stoiber K, Schmölz M, Wagner L, Miksch T, Dockhorn-Dworniczak B, Kaiser R, Schnitzer E, Schumann C. Pneumonektomie bei invasiv pulmonaler Aspergillose unter Steroiddauertherapie aufgrund fehlender Prophylaxe. Pneumologie 2016. [DOI: 10.1055/s-0036-1572104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Arciniega J, Wagner L, Prymula R, Sebo P, Isbrucker R, Descampe B, Chapsal JM, Costanzo A, Hendriksen C, Hoonaker M, Nelson S, Lidster K, Casey W, Allen D. Alternatives to HIST for acellular pertussis vaccines: progress and challenges in replacement. PHARMEUROPA BIO & SCIENTIFIC NOTES 2016; 2015:82-96. [PMID: 27506225 PMCID: PMC4980995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The 'International Workshop on Alternatives to the Murine Histamine Sensitization Test for Acellular Pertussis Vaccines: Progress and Challenges in the Replacement of HIST' was held on 24 August 2014, in Prague, Czech Republic, as a satellite meeting to the 9th World Congress on Alternatives and Animal Use in the Life Sciences. Participants discussed the progress and challenges associated with the development, validation, and implementation of in vitro assays as replacements for the histamine sensitisation test (HIST) for acellular pertussis vaccines. Discussions focused on the consistency approach, the necessary framework for regulatory acceptance of a harmonised method, and recent international efforts towards the development of in vitro assays to replace the HIST. Workshop participants agreed that acceptable alternatives to the HIST should be based on ADP ribosylation-mediated cell intoxication and therefore that the CHO cell clustering assay, which measures cell intoxication, should be further pursued and developed as a possible replacement for the HIST. Participants also agreed to continue ongoing multinational discussions involving national and international standardisation authorities to reach consensus and to organise collaborative studies in this context for assay characterisation and calibration of reference materials.
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Wagner L, Isbrucker R, Locht C, Arciniega J, Costanzo A, McFarland R, Oh H, Hoonakker M, Descamps J, Andersen SR, Gupta RK, Markey K, Chapsal JM, Lidster K, Casey W, Allen D. In search of acceptable alternatives to the murine histamine sensitisation test (HIST): what is possible and practical? PHARMEUROPA BIO & SCIENTIFIC NOTES 2016; 2016:151-170. [PMID: 28279256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The 'International Workshop on Alternatives to the Murine Histamine Sensitization Test for Acellular Pertussis Vaccines: In Search of Acceptable Alternatives to the Murine Histamine Sensitization Test (HIST): What is Possible and Practical?' was held on 4 and 5 March 2015 in London, United Kingdom. Participants discussed the results of the data generated from an international collaborative study (BSP114 Phase 2) sponsored by the European Directorate for the Quality of Medicines & Health Care (EDQM) to determine if a modified Chinese hamster ovary (CHO) cell-based clustering assay is a suitable alternative to replace HIST. Workshop participants agreed that protocol transferability demonstrated in the collaborative study indicates that a standardised CHO cell assay is adequate for measuring pure PTx in reference preparations. However, vaccine manufacturers would still need to demonstrate that the method is valid to detect or measure residual PTx in their specific adjuvanted products. The 2 modified CHO cell protocols included in the study (the Direct and the Indirect Methods) deserve further consideration as alternatives to HIST. Using the CHO cell assay, an in vitro alternative, for acellular pertussis (aP) vaccine batch release testing would reduce the number of animals used for aP vaccine safety testing. A strategic, stepwise adoption plan was proposed, in which the alternative test would be used for release purposes first, and then, once sufficient confidence in its suitable performance has been gained, its use would be extended to stability testing.
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Isbrucker R, Daas A, Wagner L, Costanzo A. Transferability study of CHO cell clustering assays for monitoring of pertussis toxin activity in acellular pertussis vaccines. PHARMEUROPA BIO & SCIENTIFIC NOTES 2016; 2015:97-114. [PMID: 27506252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Current regulations for acellular pertussis (aP) vaccines require that they are tested for the presence of residual or reversion-derived pertussis toxin (PTx) activity using the mouse histamine sensitisation test (HIST). Although a CHO cell clustering assay can be used by manufacturers to verify if sufficient inactivation of the substance has occurred in-process, this assay cannot be used at present for the final product due to the presence of aluminium adjuvants which interfere with mammalian cell cultures. Recently, 2 modified CHO cell clustering assays which accommodate for the adjuvant effects have been proposed as alternatives to the HIST. These modified assays eliminate the adjuvant-induced cytotoxicity either through dilution of the vaccine (called the Direct Method) or by introducing a porous barrier between the adjuvant and the cells (the Indirect Method). Transferability and suitability of these methods for testing of products present on the European market were investigated during a collaborative study organised by the European Directorate for the Quality of Medicines & HealthCare (EDQM). Thirteen laboratories participated in this study which included 4 aP-containing vaccines spiked by addition of PTx. This study also assessed the transferability of a standardised CHO cell clustering assay protocol for use with non-adjuvanted PTx preparations. Results showed that the majority of laboratories were able to detect the PTx spike in all 4 vaccines at concentrations of 4 IU/mL or lower using the Indirect Method. This sensitivity is in the range of the theoretical sensitivity of the HIST. The Direct Method however did not show the expected results and would need additional development work.
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