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Kim M, Yeo M, Lee K, Park MJ, Han G, Lee C, Park J, Jung B. Extraction and Characterization of Human Adipose Tissue-Derived Collagen: Toward Xeno-Free Tissue Engineering. Tissue Eng Regen Med 2024; 21:97-109. [PMID: 38079100 PMCID: PMC10764687 DOI: 10.1007/s13770-023-00612-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 01/04/2024] Open
Abstract
BACKGROUND Collagen is a key component of connective tissue and has been frequently used in the fabrication of medical devices for tissue regeneration. Human-originated collagen is particularly appealing due to its low immune response as an allograft biomaterial compared to xenografts and its ability to accelerate the regeneration process. Ethically and economically, adipose tissues available from liposuction clinics are a good resource to obtain human collagen. However, studies are still scarce on the extraction and characterization of human collagen, which originates from adipose tissue. The aim of this study is to establish a novel and simple method to extract collagen from human adipose tissue, characterize the collagen, and compare it with commercial-grade porcine collagen for tissue engineering applications. METHODS We developed a method to extract the collagen from human adipose tissue under quasi-Good Manufacturing Practice (GMP) conditions, including freezing the tissue, blood removal, and ethanol-based purification. Various techniques, including protein quantification, decellularization assessment, SDS-PAGE, FTIR, and CD spectroscopy analysis, were used for characterization. Amino acid composition was compared with commercial collagen. Biocompatibility and cell proliferation tests were performed, and in vitro tests using collagen sponge scaffolds were conducted with statistical analysis. RESULTS Our results showed that this human adipose-derived collagen was equivalent in quality to commercially available porcine collagen. In vitro testing demonstrated high cell attachment and the promotion of cell proliferation. CONCLUSION In conclusion, we developed a simple and novel method to extract and characterize collagen and extracellular matrix from human adipose tissue, offering a potential alternative to animal-derived collagen for xeno-free tissue engineering applications.
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Affiliation(s)
- Minseong Kim
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea.
- Medical Device Development Center, KBIO HEALTH OSONG Medical Innovation Foundation, 123, Osongsaengmyeong-ro, Cheongju-si, 28160, Republic of Korea.
| | - MyungGu Yeo
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - KyoungHo Lee
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - Min-Jeong Park
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - Gyeongyeop Han
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - Chansong Lee
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - Jihyo Park
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea
| | - Bongsu Jung
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80, Chembok-ro, Dong-gu, Daegu, 41061, Republic of Korea.
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Grob L, Guensch D, Oeri S, Kuganathan S, Neuenschwander M, Utz C, Jung B, Von Tengg-Kobligk H, Fischer K. USING NOVEL CARDIOVASCULAR MAGNETIC RESONANCE 4D FLOW HEMODYNAMIC IMAGING TO INVESTIGATING VENTRICULAR AORTIC COUPLING. J Cardiothorac Vasc Anesth 2022. [DOI: 10.1053/j.jvca.2022.09.041] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Fischer K, Grob L, Kuganathan S, Utz C, Becker P, Oeri S, Jung B, Gräni C, Huber A, Guensch D. FEASIBILITY OF NEW CMR POST-PROCESSING SOFTWARE PROTOTYPES IN ASSESSING THE RIGHT HEART AND TRICUSPID FUNCTION. J Cardiothorac Vasc Anesth 2022. [DOI: 10.1053/j.jvca.2022.09.017] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Utz C, Fischer K, Jung B, Friess J, Terbeck S, Erdoes G, Eberle B, Huettenmoser S, Huber A, Guensch D. VALIDATING NOVEL FREE-BREATHING CARDIOVASCULAR MAGNETIC RESONANCE SEQUENCES FOR FUTURE APPLICATIONS OF PERI-OPERATIVE IMAGING OF INDUCIBLE MYOCARDIAL DEOXYGENATION. J Cardiothorac Vasc Anesth 2022. [DOI: 10.1053/j.jvca.2022.09.057] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Schorlemmer J, Jung B, Zeller C. Collaboration and health promotion for the health care system – evaluation of the WOL healthcare. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac131.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Health care and social services are industries with special challenges: Constant emotional demands, the shortage of skilled workers is noticeable (in Germany) and special organizational stresses, not only since the Corona pandemic. This study evaluates the Working out Loud (WOL) program for healthcare, which aims to create a learning culture for interdisciplinary collaboration and network-oriented learning and increases growth-oriented thinking at organizational level.
Methods
The sample consists of 51 participants. From 16 persons data could be analyzed in the pre-post-design of the 10-week intervention accompanied by individual coaching. All respondents work in the health care system in Germany. Dependent variables were collected with validated scales for psychological safety, psychological flexibility, cooperative learning, emotional energy, engagement and voice behavior.
Results
Effects of moderate strength were shown for all variables: psychological safety (Mt1= 4.86, Mt2 = 5.45 t(15) =-1.86, p =.083, d = 0.46), psychological flexibility (Mt1= 3.57, Mt2 = 3.82 t(15) = -2.12, p = .051, d = 0.53), cooperative learning (Mt1= 4.63, Mt2 = 4.81 t(15) = -2.18, p =. 045, d = 0.54), emotional energy (Mt1= 2.70, Mt2 = 2.75 t(15) = -0.82, p = .423, d = 0.20), engagement (Mt1= 2.87, Mt2 = 3.05 t(15) = -1.65, p = .119, d = 0.41)and voice behavior (Mt1= 3.84, Mt2 = 4.05 t(15) = -1.64, p = .120, d = 0.41). Correlations are shown for psychological safety with emotional energy (r = .426, p = .012) and job satisfaction (r = .612, p = .000).
Conclusions
The 10-week WOL Healthcare program can strengthen employees in the important area of health promotion and care. The program serves as behavioral prevention and, by empowering individuals, brings about job crafting structural prevention in the workplace. The intervention follows a bottom-up principle, it is an approach for health promotion in the healthcare sector, that can strengthen patient's safety.
Key messages
• Evidence for the effectiveness of a health promotion intervention for health care workers.
• Organizational learning promotes workers health.
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Affiliation(s)
- J Schorlemmer
- Institute for Health, FOM Hochschule fuer Oekonomie und Management , Berlin, Germany
| | | | - C Zeller
- Zukunftsherz, Frankfurt, Germany
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Mirouse A, Friol A, Moreau A, Jung B, Jullien E, Bureau C, Djibre M, De Prost N, Zafrani L, Argaud L, Reuter D, Calvet L, De Montmollin E, Benghanem S, Pichereau C, Pham T, Cacoub P, Biard L, Saadoun D. Pneumonie grave à SARS-Cov2 chez les patients vaccinés : une étude multicentrique. Rev Med Interne 2022. [PMCID: PMC9212737 DOI: 10.1016/j.revmed.2022.03.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Introduction La vaccination contre le SARS-Cov2 réduit le risque d’infection, d’hospitalisation et de décès liés à l’infection. Cependant, certains patients peuvent développer une infection après une vaccination. L’objectif était de décrire les caractéristiques des patients vaccinés et qui développaient une infection grave à SARS-Cov2 nécessitant une admission en réanimation. Patients et méthodes Nous avons réalisé une étude de cohorte multicentrique incluant les patients vaccinés avec une infection grave à SARS-CoV2 et admis dans 15 réanimations françaises entre janvier et septembre 2021. Nous avons comparé ces patients à une cohorte publiée de patients non vaccinés avec une pneumonie grave à SARS-Cov2. Résultats Cent patients dont 68 (68 %) hommes avec un âge médian de 64 [57–71] ans ont été inclus. Une immunodépression était présente chez 3838 %) des patients. Parmi les patients ayant eu une sérologie à leur admission, 64 % avait un niveau d’anticorps anti-SARS-Cov2 efficace. À l’admission en réanimation, le score SOFA médian était de 4 [4–6,3] et le rapport PaO2/FiO2 médian de 84 [69–128]mmHg. Une oxygénothérapie humidifiée à haut débit a été initiée chez 79 (79 %) patients et une ventilation non invasive chez 18 (18 %) patients. Au cours de la prise en charge, 48 (48 %) patients ont nécessité le recours à l’intubation oro-trachéale avec une durée de ventilation de 11 [5–19] jours. Sur une durée de séjout médiane de 8 [4–20] jours, 31 patients sont décédés. L’âge (OR pour 5 années supplémentaires 1,38 [1,02–1,85], p = 0,035) et le score SOFA à l’admission (OR 1,40 [1,14–1,72] par point, p = 0,002) étaient indépendamment associés à la mortalité. En comparaison avec les patients non vaccinés, les patients vaccinés présentaient moins souvent du diabète (16 [16 %] vs. 351 [27 %], p = 0,029), étaient plus souvent immunodéprimés (38 [38 %] vs. 109 (8,3 %), p < 0,0001), insuffisants rénaux chroniques (24 [24 %] vs. 89 (6,8 %), p < 0,0001), insuffisants cardiaques chroniques (16 [16 %] vs. 58 [4,4 %], p < 0,0001), and insuffisants hépatiques chroniques chronic liver disease(3 [3 %] vs. 8 [0,6 %], p = 0,037). Malgré une gravit similaire à l’admission, les patients vaccinés nécessitaient moins souvent le recours à la ventilation invasive, que ce soit à l’admission ou au cours de la prise en charge en réanimation (23 [23 %] vs. 785 [59,7 %], p < 0,0001, et 48 [48 %] vs. 930 [70,7 %], p < 0,0001, respectivement). Il n’y avait pas de différence en terme de mortalité (31 [31 %] vs. 379 [28,8 %], p = 0,64). Conclusion Les infections sévères à SARS-Cov2 peuvent survenir chez des patients vaccinés, principalement ceux immunodéprimés ou avec des insuffisances rénale, hépatique ou cardiaque. L’âge et la gravité à l’admission sont associés à la mortalité.
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Staudacher JJ, Bauer J, Atkinson SR, Thursz M, Lang S, Schnabl B, Wiley MB, Carr R, Jung B. Systemic Activin Is Elevated in Patients With Severe Alcoholic Hepatitis. Gastro Hep Adv 2022; 1:147-149. [PMID: 35602917 PMCID: PMC9119346 DOI: 10.1016/j.gastha.2021.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- J J Staudacher
- Department of Gastroenterology, Infectious Disease and Rheumatology, Charite-University Medicine, Berlin, Germany
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J Bauer
- Department of Medicine, University of Washington, Seattle, Washington
| | - S R Atkinson
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - M Thursz
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - S Lang
- Department of Medicine, University of California San Diego, La Jolla, California
| | - B Schnabl
- Department of Medicine, University of California San Diego, La Jolla, California
- Department of Medicine, VA San Diego Healthcare System, San Diego, California
| | - M B Wiley
- Department of Medicine, University of Washington, Seattle, Washington
| | - R Carr
- Department of Medicine, University of Washington, Seattle, Washington
| | - B Jung
- Department of Medicine, University of Washington, Seattle, Washington
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Park J, Jung B. Performance evaluation study of a commercially available smart patient-controlled analgesia pump with the microbalance method and an infusion analyzer. J Dent Anesth Pain Med 2022; 22:129-143. [PMID: 35449784 PMCID: PMC8995673 DOI: 10.17245/jdapm.2022.22.2.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 11/20/2022] Open
Abstract
Background Patient-controlled analgesia (PCA) has been widely used as an effective medical treatment for pain and for postoperative analgesia. However, improper dose errors in intravenous (IV) administration of narcotic analgesics from a PCA infusion pump can cause patient harm. Furthermore, opioid overdose is considered one of the highest risk factors for patients receiving pain medications. Therefore, accurate delivery of opioid analgesics is a critical function of PCA infusion pumps. Methods We designed a microbalance method that consisted of a closed acrylic chamber containing a layer and an oil layer with an electronic balance. A commercially available infusion analyzer (IDA-5, Fluke Co., Everett, WA, USA) was used to measure the accuracy of the infusion flow rate from a commercially available smart PCA infusion pump (PS-1000, UNIMEDICS, Co., Ltd., Seoul, Korea) and compared with the results of the microbalance method. We evaluated the uncertainty of the flow rate measurement using the ISO guide (GUM:1995 part3). The battery life, delay time of the occlusion alarm, and bolus function of the PCA pump were also tested. Results The microbalance method was good in the short-term 2 h measurement, and IDA-5 was good in the long-term 24 h measurement. The two measurement systems can complement each other in the case of the measurement time. Regarding battery performance, PS-1000 lasted approximately 5 days in a 1 ml/hr flow rate condition without recharging the battery. The occlusion pressure alarm delays of PS-1000 satisfied the conventional alarm threshold of occlusion pressure (300-800 mmHg). Average accuracy bolus volume was measured as 63%, 95%, and 98.5% with 0.1 ml, 1 ml, and 2 ml bolus volume presets, respectively. A 1 ml/hr flow rate measurement was evaluated as 2.08% of expanded uncertainty, with a 95% confidence level. Conclusion PS-1000 showed a flow accuracy to be within the infusion pump standard, which is ± 5% of flow accuracy. Occlusion alarm of PS-1000 was quickly transmitted, resulting in better safety for patients receiving IV infusion of opioids. PS-1000 is sufficient for a portable smart PCA infusion pump.
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Affiliation(s)
| | - Bongsu Jung
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Korea
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Choi E, Kim D, Kang D, Yang GH, Jung B, Yeo M, Park MJ, An S, Lee K, Kim JS, Kim JC, Jeong W, Yoo HH, Jeon H. 3D-printed gelatin methacrylate (GelMA)/silanated silica scaffold assisted by two-stage cooling system for hard tissue regeneration. Regen Biomater 2021; 8:rbab001. [PMID: 33738115 PMCID: PMC7955716 DOI: 10.1093/rb/rbab001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 09/23/2020] [Revised: 12/23/2020] [Accepted: 01/01/2021] [Indexed: 12/12/2022] Open
Abstract
Among many biomaterials, gelatin methacrylate (GelMA), a photocurable protein, has been widely used in 3D bioprinting process owing to its excellent cellular responses, biocompatibility and biodegradability. However, GelMA still shows a low processability due to the severe temperature dependence of viscosity. To overcome this obstacle, we propose a two-stage temperature control system to effectively control the viscosity of GelMA. To optimize the process conditions, we evaluated the temperature of the cooling system (jacket and stage). Using the established system, three GelMA scaffolds were fabricated in which different concentrations (0, 3 and 10 wt%) of silanated silica particles were embedded. To evaluate the performances of the prepared scaffolds suitable for hard tissue regeneration, we analyzed the physical (viscoelasticity, surface roughness, compressive modulus and wettability) and biological (human mesenchymal stem cells growth, western blotting and osteogenic differentiation) properties. Consequently, the composite scaffold with greater silica contents (10 wt%) showed enhanced physical and biological performances including mechanical strength, cell initial attachment, cell proliferation and osteogenic differentiation compared with those of the controls. Our results indicate that the GelMA/silanated silica composite scaffold can be potentially used for hard tissue regeneration.
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Affiliation(s)
- Eunjeong Choi
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc, 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-do 15588, South Korea
| | - Dongyun Kim
- Department of Mechanical Engineering, Korea Polytechnic University, Sangidaehak-ro, Siheung, Gyeonggi-do 15073, South Korea
| | - Donggu Kang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc, 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-do 15588, South Korea
| | - Gi Hoon Yang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc, 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-do 15588, South Korea
| | - Bongsu Jung
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80, Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - MyungGu Yeo
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80, Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - Min-Jeong Park
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80, Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - SangHyun An
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - KyoungHo Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - Jun Sik Kim
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - Jong Chul Kim
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - Woonhyeok Jeong
- Department of Plastic and Reconstructive Surgery, Dongsan Medical Center, Keimyung University College of Medicine, 1035 Dalgubeol-daero, Dalseo-gu, Daegu 42601, South Korea
| | - Hye Hyun Yoo
- Institute of Pharmaceutical Science and Technology, College of Pharmacy, Hanyang University, 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-Do 15588, South Korea
| | - Hojun Jeon
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc, 55 Hanyangdaehak-Ro, Ansan, Gyeonggi-do 15588, South Korea
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Fischer K, Riecker C, Overney S, Stucki M, Tanner H, Jung B, Von Tengg-Kobligk H, Eberle B, Guensch DP. Visualizing myocardial injury from elective cardioversion with CMR. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – EU funding. Main funding source(s): European Association of Cardiothoracic Anaesthesiologists Research Grant
Background
Despite everyday use of electrical interventions in cardiovascular care, the extent and type of concomitant myocardial injury is not fully understood. Current literature disagrees about the question whether and how cardioversion or defibrillation damage the myocardium, especially when serologic markers are used. Such markers are not always cardiac-specific, nor diagnostic for type and region of myocardial injury. These limitations may be overcome by parametric T1 and T2 mapping. We aimed to investigate whether the acute and long-term impact of electrical cardioversion on myocardial structure and function is detectable using CMR imaging.
Methods
Patients scheduled for elective cardioversion were enrolled to undergo three CMR exams (3 Tesla): on the morning prior to cardioversion to assess pre-existing injury; two to five hours after cardioversion to assess the acute response; and six to ten weeks later to investigate chronic injury. The CMR exam studied left ventricular (LV) function, T2 mapping to measure edema, and extracellular volume (ECV) from T1 maps to measure diffuse fibrosis. Both the degree of injury and proportion (%) of myocardial area affected were analysed.
Results
Eight patients completed the study, requiring 1-2 shocks (totalling 120-300 J biphasic energy) to achieve sinus rhythm. LV ejection fraction increased after cardioversion from 47 ± 13% to 55 ± 15% (p = 0.020), and was 52 ± 16% at the third exam (p = 0.199). Even prior to intervention, some patients showed edema (baseline T2 > 40ms) afflicting 49 ± 23% of their LV myocardium. Area affected by edema expanded to 72 ± 18% after cardioversion (p = 0.002) and returned to 54 ± 24% by the third exam. T2 rose from baseline (40.4 ± 1.8ms) after cardioversion acutely to 44.1 ± 5.2ms (p = 0.028) and normalized until the late exam (40.8 ± 3.1ms). Myocardial area affected by diffuse fibrosis (ECV > 30%) was 28.3 ± 9.4% at baseline and 38.8 ± 18.9% late after cardioversion (p = 0.018). Pathologic T2 increases (indicative of edema) were not observed in all patients, but individuals with higher baseline ECV also experienced greater T2 increase after cardioversion (r = 0.840, p = 0.036).
Conclusion
Elective cardioversion improves LV systolic function, but also aggravates myocardial edema and possibly adds to diffuse fibrosis during several weeks thereafter. Such sequelae of cardioversion were observed mainly in patients with a greater burden of pre-existing myocardial injury. More data is needed to corroborate these preliminary findings and to study whether this type of myocardial injury predicts worse outcome. Moreover, changes in CMR markers caused by electrical interventions including defibrillation, may have the potential to confound diagnostic assessments of the underlying cardiac injury.
Abstract Figure
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Affiliation(s)
- K Fischer
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - C Riecker
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - S Overney
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - M Stucki
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - H Tanner
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - B Jung
- Bern University Hospital, Inselspital, Department of Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - H Von Tengg-Kobligk
- Bern University Hospital, Inselspital, Department of Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - B Eberle
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - DP Guensch
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
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Sutter CD, Fischer K, Yamaji K, Ueki Y, Jung B, Raeber L, Von Tengg-Kobligk H, Eberle B, Guensch DP. Changes in right ventricular deformation during hyperoxia versus normoxaemia in patients with stable coronary artery disease and healthy controls. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public hospital(s). Main funding source(s): Local research funds of the Department of Anaesthesiology and Pain medicine, Bern University Hospital, Inselspital
Background
During anaesthesia, emergency and critical care treatment, patients with coronary artery disease (CAD) are often exposed to supraphysiologic arterial oxygen tensions. The balance between benefits and risks of hyperoxia (HO) in patients with stable CAD is controversial, with reports about reduced left ventricular contractility or increased morbidity and mortality. Effects of HO on right ventricular (RV) function in CAD are less well described. Advanced cardiovascular magnetic resonance (CMR) feature tracking software allows assessment of myocardial deformation, which may serve as early marker of ventricular dysfunction. In a CMR study we quantified the effect of HO on RV function and deformation in awake healthy participants and CAD patients.
Methods
Ten healthy participants and 26 patients with stable one- or two-vessel obstructive CAD were included. In a CMR study, a short-axis function stack of both ventricles was obtained first at room air (RA), then during HO induced by breathing oxygen at 10L/min for 5 minutes via a non-rebreathing facemask. RV strain was analysed by a blinded reader who manually traced epicardial and endocardial contours of the RV for determining peak global circumferential strain (RVGCS), time to peak strain, systolic and diastolic strain rate parameters.
Results
RV ejection fraction did not change with O2 breathing in the healthy control group (RA, 56 ± 12% vs. HO, 55 ± 10%, p = 0.999) nor in the CAD group (RA, 60 ± 8% vs. HO, 60 ± 9%, p = 0.609). RV cardiac index decreased significantly in CAD patients from RA (2.62 ± 0.88 L/min/m2) to HO (2.42 ± 0.77L/min/m2, p = 0.002). The decrease in the control group was not significant (RVCI: RA 3.28 ± 1.29 vs HO 3.04 ± 1.27L/min/m2 p = 0.068).
In the healthy control group, RVGCS, time to peak strain, and systolic strain rate did not change significantly with HO (RVGCS: RA, -14.6 ± 3.9% vs. HO, -13.1 ± 4.5%, p = 0.353; time to peak strain: 282 ± 45ms vs. 286 ± 29ms, p = 0.540; and systolic strain rate: -0.85 ± 0.27/s vs. -0.67 ± 0.28, p = 0.055).
In CAD patients RVGCS worsened from -14.8 ± 3.3% on RA to -13.9 ± 3.6% at HO (p = 0.040). Time to peak strain became significantly prolonged from 319 ± 40ms on RA to 329 ± 49ms at HO (p = 0.046). This was accompanied by a reduction of systolic strain rate from -0.79 ± 0.27/s to -0.75 ± 0.22/s (p = 0.037). Diastolic strain parameters did not differ significantly between RA and HO in either group.
Conclusion
In our cohort of CAD patients HO significantly reduced RV cardiac index and impaired systolic deformation as determined by CMR feature tracking. Studies are required in a larger patient cohort with regional analysis and assessment of longitudinal and radial deformation to assess the role of hyperoxia in CAD.
Abstract Figure. Change in RV Peak Circumferential Strain
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Affiliation(s)
- CD Sutter
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - K Fischer
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - K Yamaji
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - Y Ueki
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - B Jung
- Bern University Hospital, Inselspital, Department of Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - L Raeber
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - H Von Tengg-Kobligk
- Bern University Hospital, Inselspital, Department of Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - B Eberle
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - DP Guensch
- Bern University Hospital, Inselspital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
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12
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Fischer K, Riecker C, Overney S, Stucki M, Tanner H, Jung B, von Tengg-Kobligk H, Eberle B, Guensch D. VIsualizing myocardial injury from elective cardioversion. J Cardiothorac Vasc Anesth 2020. [DOI: 10.1053/j.jvca.2020.09.026] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Huelsenitz S, Fischer K, Yamaji K, Stucki M, Ueki Y, Jung B, Räber L, von Tengg-Kobligk H, Eberle B, Guensch D. Effects of normoxic versus hyperoxic hyperventilation followed by apnea on right ventricular strain in patients with multi-vessel coronary artery disease. J Cardiothorac Vasc Anesth 2020. [DOI: 10.1053/j.jvca.2020.09.016] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Neuenschwander M, Fischer K, Jung C, Hurni S, Winkler B, Jung B, Vogt A, Eberle B, Guensch D. Ventricular strain is compromised outside of the coronary autoregulatory range – assessment by cardiovascular magnetic resonance. J Cardiothorac Vasc Anesth 2020. [DOI: 10.1053/j.jvca.2020.09.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Chittka D, Lennartz L, Jung B, Banas B, Bergler T. [Successful rituximab treatment of recurrent glomerulonephritis associated with antibodies against the glomerular basement membrane]. Internist (Berl) 2020; 61:416-423. [PMID: 32179970 DOI: 10.1007/s00108-020-00773-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This article presents a case of recurrent anti-GBM disease (with antibodies against the glomerular basement membrane [GBM]) in a 17-year-old patient successfully treated with rituximab. Kidney biopsy with detection of linear deposition of immunoglobulin G (IgG) along the basement membrane is the diagnostic gold standard, which should be accompanied by serological testing. However, standard assays for the detection of anti-GBM antibodies have a high rate of false-negative results. In this particular case, an increase in proteinuria despite standard therapy (plasmapheresis, steroids, cyclophosphamide) was the clinical correlate of relapsing disease. The use of rituximab completely resolved the recurrent anti-GBM disease.
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Affiliation(s)
- D Chittka
- Abteilung Nephrologie, Universitätsklinikum Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland.
| | - L Lennartz
- Abteilung Nephrologie, Universitätsklinikum Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland
| | - B Jung
- Abteilung Nephrologie, Universitätsklinikum Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland
| | - B Banas
- Abteilung Nephrologie, Universitätsklinikum Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland
| | - T Bergler
- Abteilung Nephrologie, Universitätsklinikum Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland
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16
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Boontiam W, Hyun YK, Jung B, Kim YY. Effects of lysophospholipid supplementation to reduced energy, crude protein, and amino acid diets on growth performance, nutrient digestibility, and blood profiles in broiler chickens. Poult Sci 2020; 98:6693-6701. [PMID: 31801309 PMCID: PMC6869753 DOI: 10.3382/ps/pex005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 05/31/2016] [Accepted: 01/04/2017] [Indexed: 01/13/2023] Open
Abstract
Two experiments investigated the effects of lysophospholipid (LPL) supplementation on low-energy and low-nitrogenous diets for broilers. A total of 300 one-day-old male chicks (Ross 308) was allotted to 5 treatments in a completely randomized design. Each group consisted of 6 replicates with 10 birds each. Experimental diet I included positive control (PC) having 3,025 (starter), 3,150 (grower), and 3,200 kcal/kg (finisher) of ME; negative control (NC) was 150 kcal/kg of ME lower than PC, and LPL-05, LPL-10, and LPL-15 treatments were NC + 0.05%, 0.10%, and 0.15% of LPL supplementation, respectively. Experimental diet II included positive control (PC) having a formulated amount of crude protein including Lys and Met + Cys that met the Ross 308 standards; negative control (NC) was 4% lower CP and AA than PC; other treatments were supplemented with LPL at 0.05% (LPL-05), 0.10% (LPL-10), and 0.15% (LPL-15) into the NC, respectively. Experiment I showed that growth performance linearly increased as the LPL inclusion increased (P < 0.001). Broilers fed LPL-10 and LPL-15 increased digestibility of DM (P < 0.05), crude protein (P < 0.01), and total amino acids (P < 0.01) compared to NC. Serum glucose (P < 0.01) and high-density lipoprotein (P < 0.05) concentrations were greater in groups fed LPL-10 than those fed PC. Furthermore, leg muscle increased in birds fed LPL-10 compared with NC (P < 0.05). Experiment II observed a linear response to LPL supplementation in the whole period, in terms of body weight gain (P = 0.015) and feed conversion ratio (P = 0.027). Feeding of 0.15% LPL had promising effects on digestibility of crude protein and ether extract compared with NC (P < 0.01 and P < 0.05, respectively). Overall, LPL could be considered as a feed additive to reduced energy (−150 kcal/kg) or nitrogenous diets (−5%) in order to improve growth performance and nutrient digestibility without adverse effects on lymphoid organs and hepatic enzyme of broilers.
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Affiliation(s)
- W Boontiam
- School of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-921, South Korea.,Faculty of Agriculture, Department of Animal Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Y K Hyun
- School of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-921, South Korea.,Easy Bio Inc., 310 Gangnam-daero, Gangnam-gu, Seoul 135-754, South Korea
| | - B Jung
- Easy Bio Inc., 310 Gangnam-daero, Gangnam-gu, Seoul 135-754, South Korea
| | - Y Y Kim
- School of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-921, South Korea
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Ait-Belkacem R, Hochart G, Marini J, Tomezyk A, Mantefeul P, Jung B, Bonnel D, Kenzie DM, Stauber J. Abstract A114: Quantitative mass spectrometry imaging: A game changer in the pharmaceutical industry. Mol Cancer Ther 2019. [DOI: 10.1158/1535-7163.targ-19-a114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
Abstract
Developing a drug requires to demonstrate its efficacy in preclinical and clinical studies but also to characterize its pharmacokinetics properties. If Quantitative Whole-Body Autoradiography (QWBA) is still a gold standard to support the design of radiolabelled clinical studies, its lack of molecular specificity limits the understanding of the distribution of the drug and its metabolites, with no establishing of separate quantitative results for each target tissue of interest. On the contrary, the use of high resolution mass spectrometers such as FT-ICR MS allows a quantitative characterization of the metabolic profile of the drug at the tissue level in order to further understand its behaviour in the organism. A comparative analysis between QWBA and QMSI was applied as a complementary approach to follow chloroquine and one of its metabolites (desethyl-chloroquine) at different time-points after a single administration of a radiolabeled dose to Long-Evans male rats (30 mg/kg). 1H-Chloroquine and 1H-desethyl chloroquine were well detected by MALDI-FTICR in the eye including; the uveal tract, the vitreous humor, the lens and the Harderian gland. In the mid whole-body region, both compounds were also detected in various organs from the unique prepared T4h sections. Interestingly the two compounds were co-localized into the tissue sections and their distributions matched the zones obtained by QWBA. In QWBA additional regions containing the radiolabeled moiety could be clearly identified because of the high sensitivity of the technique. The advantage brought by MALDI QMSI was the ability to discriminate between parent drug 1H-choloroquine and its metabolite 1H-desethyl chloroquine so that each compound had its own distribution image and thus its own quantification data directly in one tissue section. The used labeled forms of both compounds during the matrix deposit allowed normalizing the data for each position targeted with the MALDI onto the section of interest and the calibration range of both 1H-choloroquine and 1H-desethyl chloroquine and quantifying each compound into the organs of interest with the ILC approach. Finally the QMSI was able to demonstrate the disappearance of the drug and its metabolite with time to better understand differential pharmacokinetics analysis demonstrating the additional input of the technology compared to QWBA.
Citation Format: Rima Ait-Belkacem, Guillaume Hochart, Joseph Marini, Aurore Tomezyk, p Mantefeul, B. Jung, David Bonnel, Don Mc Kenzie, Jonathan Stauber. Quantitative mass spectrometry imaging: A game changer in the pharmaceutical industry [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics; 2019 Oct 26-30; Boston, MA. Philadelphia (PA): AACR; Mol Cancer Ther 2019;18(12 Suppl):Abstract nr A114. doi:10.1158/1535-7163.TARG-19-A114
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Affiliation(s)
| | | | | | | | | | - B. Jung
- 3Covance Laboratories, Wiscousin, WI
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Chen C, Jung B, Kim WK. Effects of lysophospholipid on growth performance, carcass yield, intestinal development, and bone quality in broilers. Poult Sci 2019; 98:3902-3913. [PMID: 31329958 DOI: 10.3382/ps/pez111] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A study was conducted to evaluate the effects of supplementing different levels of lysophospholipid (LPL) to normal or reduced energy diets on growth performance, carcass yield, intestinal morphology, and skeletal development in broilers. A total of 960 one-day-old Cobb 500 male birds were allocated using a 2 × 4 factorial arrangement with 2 energy levels (NE: normal and RE: 100 kcal/kg metabolizable energy reduction) and 4 LPL supplement levels (0, 0.025, 0.050, and 0.075%). Three diet phases were fed throughout the trial: starter (days 0 to 7), grower (days 8 to 21), and finisher (days 22 to 42) phases. Body weight (BW), feed intake (FI), and feed conversion ratio were calculated at the end of each phase. At day 7 and 21, duodenum and jejunum samples were collected for intestinal morphology and claudin-3 expression analyses, and tibia were sampled for bone quality analyses. At day 42, 4 birds per replicate were selected to measure carcass yield. The results showed low metabolizable energy diets impaired bird's growth performance, intestine development, and bone quality. The 0.075% LPL supplement in NE improved BW, BW gain, and FI in the finisher and overall period compared with no LPL supplement in NE (P < 0.05). In RE, the 0.025% LPL supplement significantly improved growth performance compared to the other treatments in RE (P < 0.05). The interactions on processing parameters were detected with LPL supplement in NE diets; 0.025, 0.05, and 0.075% LPL supplements significantly increased pectoral major percentages compared to the one without LPL supplement in NE (P < 0.05). The 0.075% LPL supplement increased dressing percentage (cold carcass weight/live BW) compared with the others (P < 0.05). The intestine morphology results showed LPL had positive effects on intestine development mainly during the early age (day 7) and claudin-3 expression at both day 7 and 21. Furthermore, LPL supplement significantly increased the total Ca and P deposition and positively affected the bone structure development. In summary, dietary LPL supplementation promoted growth performance, carcass yield, intestinal development, intestinal health, and bone quality.
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Affiliation(s)
- C Chen
- Department of Poultry Science, University of Georgia, Athens, GA 30602
| | - B Jung
- Easy Bio Inc., 310 Gangnam-daero, Gangnam-gu, Seoul 135-754, South Korea
| | - W K Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602
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Jung B, Martinez M, Claessens YE, Darmon M, Klouche K, Lautrette A, Levraut J, Maury E, Oberlin M, Terzi N, Viglino D, Yordanov Y, Claret PG, Bigé N. Diagnostic et Prise en Charge de l’Acidose Métabolique Recommandations formalisées d’experts communes Société de réanimation de langue française (SRLF) – Société française de médecine d’urgence (SFMU). Ann Fr Med Urgence 2019. [DOI: 10.3166/afmu-2019-0162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
L’acidose métabolique est un trouble fréquemment rencontré en médecine d’urgence et en médecine intensive réanimation. La littérature s’étant enrichie de nouvelles données concernant la prise en charge de l’acidose métabolique, la Société de Réanimation de Langue Française (SRLF) et la Société Française de Médecine d’Urgence (SFMU) ont élaboré des recommandations formalisées d’experts selon la méthodologie GRADE. Les champs de la stratégie diagnostique, de l’orientation et de la prise en charge thérapeutique ont été traités et vingt-neuf recommandations ont été formulées : quatre recommandations fortes (Grade 1), dix recommandations faibles (Grade 2) et quinze avis d’experts. Toutes ont obtenu un accord fort. L’application des méthodes d’Henderson-Hasselbalch et de Stewart pour le diagnostic du mécanisme de l’acidose métabolique est discutée et un algorithme diagnostique est proposé. L’utilisation de la cétonémie et des lactatémies veineuse et capillaire est également traitée. L’intérêt du pH, de la lactatémie et de sa cinétique pour l’orientation des patients en pré-hospitalier et aux urgences est envisagé. Enfin, les modalités de l’insulinothérapie au cours de l’acidocétose diabétique, les indications de la perfusion de bicarbonate de sodium et de l’épuration extra-rénale ainsi que les modalités de la ventilation mécanique au cours des acidoses métaboliques sévères sont traitées dans la prise en charge thérapeutique.
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20
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Fischer K, Jung B, Eberle B, Guensch D. Intraventricular 4D blood flow: adding a fourth dimension to cardiovascular functional analysis by magnetic resonance imaging. J Cardiothorac Vasc Anesth 2019. [DOI: 10.1053/j.jvca.2019.07.078] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Chun SY, Lim JO, Lee EH, Han MH, Ha YS, Lee JN, Kim BS, Park MJ, Yeo M, Jung B, Kwon TG. Preparation and Characterization of Human Adipose Tissue-Derived Extracellular Matrix, Growth Factors, and Stem Cells: A Concise Review. Tissue Eng Regen Med 2019; 16:385-393. [PMID: 31413942 DOI: 10.1007/s13770-019-00199-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 06/06/2019] [Indexed: 01/19/2023] Open
Abstract
Background Human adipose tissue is routinely discarded as medical waste. However, this tissue may have valuable clinical applications since methods have been devised to effectively isolate adipose-derived extracellular matrix (ECM), growth factors (GFs), and stem cells. In this review, we analyze the literature that devised these methods and then suggest an optimal method based on their characterization results. Methods Methods that we analyze in this article include: extraction of adipose tissue, decellularization, confirmation of decellularization, identification of residual active ingredients (ECM, GFs, and cells), removal of immunogens, and comparing structural/physiological/biochemical characteristics of active ingredients. Results Human adipose ECMs are composed of collagen type I-VII, laminin, fibronectin, elastin, and glycosaminoglycan (GAG). GFs immobilized in GAG include basic fibroblast growth factor (bFGF), transforming growth factor beta 1(TGF-b1), insulin like growth factor 1 (IGF-1), vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), BMP4 (bone morphogenetic protein 4), nerve growth factor (NGF), hepatocyte growth factor (HGF), and epithermal growth factor (EGF). Stem cells in the stromal-vascular fraction display mesenchymal markers, self-renewal gene expression, and multi-differentiation potential. Conclusion Depending on the preparation method, the volume, biological activity, and physical properties of ECM, GFs, and adipose tissue-derived cells can vary. Thus, the optimal preparation method is dependent on the intended application of the adipose tissue-derived products.
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Affiliation(s)
- So Young Chun
- 1BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, 41940 Republic of Korea
| | - Jeong Ok Lim
- 1BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, 41940 Republic of Korea
| | - Eun Hye Lee
- 2Department of Pathology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
| | - Man-Hoon Han
- 2Department of Pathology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
| | - Yun-Sok Ha
- 3Department of Urology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
| | - Jun Nyung Lee
- 3Department of Urology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
| | - Bum Soo Kim
- 3Department of Urology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
| | - Min Jeong Park
- 4Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Cheombok-ro 80, Dong-gu, Daegu, 41061 Republic of Korea
| | - MyungGu Yeo
- 4Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Cheombok-ro 80, Dong-gu, Daegu, 41061 Republic of Korea
| | - Bongsu Jung
- 4Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Cheombok-ro 80, Dong-gu, Daegu, 41061 Republic of Korea
| | - Tae Gyun Kwon
- 3Department of Urology, School of Medicine, Kyungpook National University, Daegu, 41944 Republic of Korea
- 5Department of Urology, Kyungpook National University Chilgok Hospital, 807 Hoguk-ro, Buk-gu, Daegu, 41404 Republic of Korea
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Niaudet C, Petkova M, Jung B, Lu S, Laviña B, Offermanns S, Brakebusch C, Betsholtz C. Adgrf5 contributes to patterning of the endothelial deep layer in retina. Angiogenesis 2019; 22:491-505. [PMID: 31256320 PMCID: PMC6863953 DOI: 10.1007/s10456-019-09674-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/17/2019] [Indexed: 12/27/2022]
Abstract
Neovascularization of the inner retinal space is a major cause of vision loss. In retinal angiomatous proliferation (RAP) syndrome, newly formed vessels originate from the retinal plexus and invade the inner retinal space. However, the molecular pathways preventing subretinal vascularization remain largely unknown. In most murine models of RAP, pathological neovascularization occurs concomitantly with the development of the retinal vasculature. Here, we demonstrate that disturbing the sequence of morphogenetic events that shape the three-layered retinal vascular network leads to subretinal vascularization. Sprouts emerging from the perivenous region after the first postnatal week extended toward the retinal space where they merged into the deep layer. The small GTPase Rac1 was required for the formation of these vascular extensions and the vascular inner plexus is formed coaxially to the overarching veins. The adhesion receptor Adgrf5 was highly expressed in the endothelium of the central nervous system, where it regulates blood–brain barrier formation. The vascular superficial plexus of Adgrf5 mutant mouse retinae exhibited an increased vascular density in the perivenous areas with increased projections toward the inner plexus where they subsequently created hyper-dense endothelial cells (EC) clusters. Disturbing the perivenous pool of EC thus significantly altered the inner plexus formation. These abnormalities culminated in transient vascular protrusions in the inner retinal space. Taken together, these results reveal a previously unobserved vascular morphogenetic defect in Adgrf5 knockout mice, implicating a role for ADGRF5 in the initiation of subretinal vascularization. Our findings also illustrate how vein-derived EC shape the inner retinal layer formation and could control the appearance of angiomatous malformations.
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Affiliation(s)
- C Niaudet
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185, Uppsala, Sweden.
| | - M Petkova
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - B Jung
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - S Lu
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, 61231, Germany
| | - B Laviña
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - S Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, 61231, Germany
| | - C Brakebusch
- Biotech Research and Innovation Centre, University of Copenhagen, Ole Maaløes Vej 5, 2200, Copenhagen, Denmark
| | - C Betsholtz
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185, Uppsala, Sweden
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Leone M, Bouadma L, Bouhemad B, Brissaud O, Dauger S, Gibot S, Hraiech S, Jung B, Kipnis E, Launey Y, Luyt C, Margetis D, Michel F, Mokart D, Montravers P, Monsel A, Nseir S, Pugin J, Roquilly A, Velly L, Zahar J, Bruyère R, Chanques G. Pneumonies associées aux soins de réanimation* RFE commune SFAR–SRLF. Méd Intensive Réa 2019. [DOI: 10.3166/rea-2019-0106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Guensch DP, Fischer K, Yamaji K, Ueki Y, Jung B, Raber L, Von Kobligk-Tengg H, Eberle B. P150Effects of oxygen administration during CMR imaging in patients with multi-vessel coronary artery disease. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez117.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D P Guensch
- Bern University Hospital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - K Fischer
- Bern University Hospital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - K Yamaji
- Bern University Hospital, Department of Cardiology, Bern, Switzerland
| | - Y Ueki
- Bern University Hospital, Department of Cardiology, Bern, Switzerland
| | - B Jung
- Bern University Hospital, Institute for Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - L Raber
- Bern University Hospital, Department of Cardiology, Bern, Switzerland
| | - H Von Kobligk-Tengg
- Bern University Hospital, Institute for Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - B Eberle
- Bern University Hospital, Department of Anaesthesiology and Pain Medicine, Bern, Switzerland
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25
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Michel M, Gulac P, Fischer K, Jung B, Longnus SL, Guensch DP. 22Effects of myoglobin oxygenation on oxygenation-sensitive cardiovascular magnetic resonance images: an in-vitro study. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Michel
- Bern University Hospital, Department Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - P Gulac
- Bern University Hospital, Department Cardiovascular Surgery, Bern, Switzerland
| | - K Fischer
- Bern University Hospital, Department Anaesthesiology and Pain Medicine, Bern, Switzerland
| | - B Jung
- Bern University Hospital, Department Interventional and Paediatric Radiology, Bern, Switzerland
| | - S L Longnus
- Bern University Hospital, Department Cardiovascular Surgery, Bern, Switzerland
| | - D P Guensch
- Bern University Hospital, Department Anaesthesiology and Pain Medicine, Bern, Switzerland
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Jung B, Iacono P, Schüle A, Wolf J, Nickolaus P. P274 Both BI 443651 and BI 1265162 show inhibition of ENaC-mediated in vitro water resorption. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30567-3] [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: 10/26/2022]
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Sabater J, Jung B, Iacono P, Nickolaus P. ePS1.06 Both epithelial sodium channel (ENaC) inhibitors BI 443651 and BI 1265162 increase mucociliary clearance in sheep. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30245-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fischer K, Guensch DP, Artho M, Luescher S, Jung B, Von Tengg-Kobligk H, Eberle B, Friedrich MF. P429Combining systolic and diastolic feature tracking myocardial strain parameters for a more comprehensive assessment of the different characteristics in HFpEF. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez118.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Fischer
- Bern University Hospital, Department of Anesthesia and Pain Medicine, Bern, Switzerland
| | - D P Guensch
- Bern University Hospital, Department of Anesthesia and Pain Medicine, Bern, Switzerland
| | - M Artho
- Bern University Hospital, Department of Anesthesia and Pain Medicine, Bern, Switzerland
| | - S Luescher
- Bern University Hospital, Department of Anesthesia and Pain Medicine, Bern, Switzerland
| | - B Jung
- Bern University Hospital, Institute for Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - H Von Tengg-Kobligk
- Bern University Hospital, Institute for Diagnostic, Interventional and Paediatric Radiology, Bern, Switzerland
| | - B Eberle
- Bern University Hospital, Department of Anesthesia and Pain Medicine, Bern, Switzerland
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Jung B, Iacono P, Benediktus K, Hahn M, Göggerle G, Wolf J, Nickolaus P. P273 BI 443651 and BI 1265162 demonstrate in vitro inhibition of epithelial sodium channel (ENaC) in the Ussing chamber. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30566-1] [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: 10/26/2022]
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Jung B, Iacono P, Hahn M, Borsch M, Hoffmann A, Nickolaus P. P275 Both BI 443651 and BI 1265162 demonstrate inhibition of the liquid absorption from the rat airway epithelium in vivo. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30568-5] [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: 10/26/2022]
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Li BT, Janku F, Jung B, Hou C, Madwani K, Alden R, Razavi P, Reis-Filho JS, Shen R, Isbell JM, Blocker AW, Eattock N, Gnerre S, Satya RV, Xu H, Zhao C, Hall MP, Hu Y, Sehnert AJ, Brown D, Ladanyi M, Rudin CM, Hunkapiller N, Feeney N, Mills GB, Paweletz CP, Janne PA, Solit DB, Riely GJ, Aravanis A, Oxnard GR. Ultra-deep next-generation sequencing of plasma cell-free DNA in patients with advanced lung cancers: results from the Actionable Genome Consortium. Ann Oncol 2019; 30:597-603. [PMID: 30891595 PMCID: PMC6503621 DOI: 10.1093/annonc/mdz046] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Noninvasive genotyping using plasma cell-free DNA (cfDNA) has the potential to obviate the need for some invasive biopsies in cancer patients while also elucidating disease heterogeneity. We sought to develop an ultra-deep plasma next-generation sequencing (NGS) assay for patients with non-small-cell lung cancers (NSCLC) that could detect targetable oncogenic drivers and resistance mutations in patients where tissue biopsy failed to identify an actionable alteration. PATIENTS AND METHODS Plasma was prospectively collected from patients with advanced, progressive NSCLC. We carried out ultra-deep NGS using cfDNA extracted from plasma and matched white blood cells using a hybrid capture panel covering 37 lung cancer-related genes sequenced to 50 000× raw target coverage filtering somatic mutations attributable to clonal hematopoiesis. Clinical sensitivity and specificity for plasma detection of known oncogenic drivers were calculated and compared with tissue genotyping results. Orthogonal ddPCR validation was carried out in a subset of cases. RESULTS In 127 assessable patients, plasma NGS detected driver mutations with variant allele fractions ranging from 0.14% to 52%. Plasma ddPCR for EGFR or KRAS mutations revealed findings nearly identical to those of plasma NGS in 21 of 22 patients, with high concordance of variant allele fraction (r = 0.98). Blinded to tissue genotype, plasma NGS sensitivity for de novo plasma detection of known oncogenic drivers was 75% (68/91). Specificity of plasma NGS in those who were driver-negative by tissue NGS was 100% (19/19). In 17 patients with tumor tissue deemed insufficient for genotyping, plasma NGS identified four KRAS mutations. In 23 EGFR mutant cases with acquired resistance to targeted therapy, plasma NGS detected potential resistance mechanisms, including EGFR T790M and C797S mutations and ERBB2 amplification. CONCLUSIONS Ultra-deep plasma NGS with clonal hematopoiesis filtering resulted in de novo detection of targetable oncogenic drivers and resistance mechanisms in patients with NSCLC, including when tissue biopsy was inadequate for genotyping.
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Affiliation(s)
- B T Li
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York.
| | - F Janku
- Department of Investigational Cancer Therapeutics, MD Anderson Cancer Center, Houston
| | - B Jung
- Illumina, Inc., San Francisco
| | - C Hou
- Illumina, Inc., San Francisco
| | - K Madwani
- Department of Investigational Cancer Therapeutics, MD Anderson Cancer Center, Houston
| | - R Alden
- Department of Medical Oncology, Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston
| | - P Razavi
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | | | - R Shen
- Epidemiology and Biostatistics
| | - J M Isbell
- Surgery, Memorial Sloan Kettering Cancer Center, New York
| | | | | | | | | | - H Xu
- Illumina, Inc., San Francisco
| | - C Zhao
- Illumina, Inc., San Diego
| | | | - Y Hu
- Department of Medical Oncology, Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston
| | | | | | | | - C M Rudin
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | | | - N Feeney
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston
| | - G B Mills
- Department of Investigational Cancer Therapeutics, MD Anderson Cancer Center, Houston
| | - C P Paweletz
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston
| | - P A Janne
- Department of Medical Oncology, Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston; Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston
| | - D B Solit
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York; Human Oncology and Pathogenesis Program, Memorial Sloan Cancer Center, New York, USA
| | - G J Riely
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | | | - G R Oxnard
- Department of Medical Oncology, Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston
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Uhel F, Aboab J, Azabou E, Chousterman B, Guillon A, Jung B, Preau S, Radermacher P, Silva S, Textoris J, Vodovar D, de Prost N, Zafrani L. Insuffisances rénales aiguës : actes du 5 e Séminaire de recherche translationnelle de la Société de réanimation de langue française (Paris, 4 décembre 2018). Méd Intensive Réa 2019. [DOI: 10.3166/rea-2019-0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Le séminaire annuel de la commission de recherche translationnelle de la SRLF a eu lieu à Paris le 4 décembre 2018. Ce séminaire a pour but de réunir des cliniciens et scientifiques autour de grandes thématiques de recherche en médecine intensive et réanimation. La cinquième édition a porté sur l’insuffisance rénale aiguë, problématique quotidienne importante des réanimateurs. Les interventions se sont intéressées à la physiopathologie des diverses formes d’insuffisance rénale aiguë, à la récupération rénale, aux modèles expérimentaux, à l’hémodynamique régionale ou encore aux innovations technologiques en épuration extrarénale.
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Jung B, Guillon A. Échographie du diaphragme en réanimation. Méd Intensive Réa 2019. [DOI: 10.3166/rea-2018-0039] [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: 11/20/2022]
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Brunot V, Larcher R, Amalric M, Platon L, Tudesq JJ, Besnard N, Daubin D, Corne P, Jung B, Klouche K. Prise en charge du transplanté rénal en réanimation. Méd Intensive Réa 2018. [DOI: 10.3166/rea-2018-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
La transplantation rénale est la thérapeutique de choix de l’insuffisance rénale chronique au stade ultime, son usage est de plus en plus large. Les progrès réalisés dans les traitements immunosuppresseurs ont permis une amélioration de la durée de vie du greffon, mais au prix d’une augmentation des complications cardiovasculaires et infectieuses. Environ 5 % des transplantés rénaux présentent des complications sévères qui nécessitent une prise en charge intensive. Elles sont principalement de cause infectieuse et dominées par la défaillance respiratoire aiguë. L’insuffisance rénale aiguë est commune, elle affecte la fonction du greffon à court et long termes. La prise en charge en réanimation de ces complications doit prendre en compte le terrain particulier du transplanté rénal et les effets délétères de l’immunosuppression, condition nécessaire à une amélioration de la mortalité qui reste à plus de 30 %.
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Ryu JH, Kwon M, Moon JD, Hwang MW, Lee JM, Park KH, Yun SJ, Bae HJ, Choi A, Lee H, Jung B, Jeong J, Han K, Kim Y, Oh EJ. Development of a Rapid Automated Fluorescent Lateral Flow Immunoassay to Detect Hepatitis B Surface Antigen (HBsAg), Antibody to HBsAg, and Antibody to Hepatitis C. Ann Lab Med 2018; 38:578-584. [PMID: 30027702 PMCID: PMC6056386 DOI: 10.3343/alm.2018.38.6.578] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 10/26/2017] [Revised: 03/15/2018] [Accepted: 07/04/2018] [Indexed: 01/12/2023] Open
Abstract
Background Accurate, rapid, and cost-effective screening tests for hepatitis B virus (HBV) and hepatitis C virus (HCV) infection may be useful in laboratories that cannot afford automated chemiluminescent immunoassays (CLIAs). We evaluated the diagnostic performance of a novel rapid automated fluorescent lateral flow immunoassay (LFIA). Methods A fluorescent LFIA using a small bench-top fluorescence reader, Automated Fluorescent Immunoassay System (AFIAS; Boditech Med Inc., Chuncheon, Korea), was developed for qualitative detection of hepatitis B surface antigen (HBsAg), antibody to HBsAg (anti-HBs), and antibody to HCV (anti-HCV) within 20 minutes. We compared the diagnostic performance of AFIAS with that of automated CLIAs—Elecsys (Roche Diagnostics GmbH, Penzberg, Germany) and ARCHITECT (Abbott Laboratories, Abbott Park, IL, USA)—using 20 seroconversion panels and 3,500 clinical serum samples. Results Evaluation with the seroconversion panels demonstrated that AFIAS had adequate sensitivity for HBsAg and anti-HCV detection. From the clinical samples, AFIAS sensitivity and specificity were 99.8% and 99.3% for the HBsAg test, 100.0% and 100.0% for the anti-HBs test, and 98.8% and 99.1% for the anti-HCV test, respectively. Its agreement rates with the Elecsys HBsAg, anti-HBs, and anti-HCV detection assays were 99.4%, 100.0%, and 99.0%, respectively. AFIAS detected all samples with HBsAg genotypes A-F and H and anti-HCV genotypes 1, 1a, 1b, 2a, 2b, 4, and 6. Cross-reactivity with other infections was not observed. Conclusions The AFIAS HBsAg, anti-HBs, and anti-HCV tests demonstrated diagnostic performance equivalent to current automated CLIAs. AFIAS could be used for a large-scale HBV or HCV screening in low-resource laboratories or low-to middle-income areas.
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Affiliation(s)
- Ji Hyeong Ryu
- Department of Molecular & Cell Biology, Graduate School, The Catholic University of Korea, Seoul, Korea.,Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Minsuk Kwon
- Central Lab, R&D Center, Boditech Med, Chungcheon, Korea
| | - Joung Dae Moon
- Central Lab, R&D Center, Boditech Med, Chungcheon, Korea
| | | | - Jeong Min Lee
- Central Lab, R&D Center, Boditech Med, Chungcheon, Korea
| | - Ki Hyun Park
- Department of Molecular & Cell Biology, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - So Jeong Yun
- Department of Molecular & Cell Biology, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - Hyun Jin Bae
- Department of Molecular & Cell Biology, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - Aeran Choi
- Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Hyeyoung Lee
- Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.,Department of Laboratory Medicine, International St. Mary's Hospital, College of Medicine, Catholic Kwandong University, Incheon, Korea
| | - Bongsu Jung
- Department of Biomedical Science, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Korea
| | - Juhee Jeong
- Department of Biomedical Science, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Korea
| | - Kyungja Han
- Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Yonggoo Kim
- Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
| | - Eun Jee Oh
- Department of Laboratory Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
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Fischer K, Guensch D, Artho M, Luescher S, Jung B, von Tengg-Kobligk H, Eberle B, Friedrich M. New insights into risk evaluation of heart failure with preserved ejection fraction using MRI. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.107] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Guensch DP, Fischer K, Yamaji K, Luescher S, Ueki Y, Jung B, Räber L, von Tengg-Kobligk H, Eberle B. Effects of hyperoxia on myocardial oxygenation and function in multi-vessel coronary artery disease. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Obici L, Whelan CJ, Drachman BM, Heitner SB, Maurer MS, Damy T, Judge DP, Monia BP, Hughes SG, Kwoh J, Jung B, Ackermann EJ, Benson MD. P684Inotersen improved quality of life, polyneuropathy and cardiomyopathy in a diverse group of patients with hereditary transthyretin amyloidosis in the phase 3 study NEURO-TTR. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- L Obici
- Amyloidosis Research and Treatment Center, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - C J Whelan
- University College London–National Amyloidosis Centre, London, United Kingdom
| | - B M Drachman
- University of Pennsylvania, Philadelphia, United States of America
| | - S B Heitner
- Oregon Health & Science University, Portland, United States of America
| | - M S Maurer
- Columbia University Medical Center, New York, United States of America
| | - T Damy
- French Referral Center for Cardiac Amyloidosis, Department of Cardiology, Henri Mondor Hospital, Paris, France
| | - D P Judge
- Medical University of South Carolina, Charleston, United States of America
| | - B P Monia
- Ionis Pharmaceuticals, Carlsbad, United States of America
| | - S G Hughes
- Ionis Pharmaceuticals, Carlsbad, United States of America
| | - J Kwoh
- Ionis Pharmaceuticals, Carlsbad, United States of America
| | - B Jung
- Ionis Pharmaceuticals, Carlsbad, United States of America
| | - E J Ackermann
- Ionis Pharmaceuticals, Carlsbad, United States of America
| | - M D Benson
- Indiana University School of Medicine, Indianapolis, United States of America
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Pène F, Azabou E, Jung B, Gibot S, Guillon A, Monneret G, Silva S, Taccone F, Textoris J, Uhel F, Zafrani L, de Prost N. Faire face à la menace infectieuse en réanimation : de la veille épidémiologique à l’innovation. Actes du séminaire de recherche translationnelle de la Société de réanimation de langue française (5 décembre 2017). Méd Intensive Réa 2018. [DOI: 10.3166/rea-2018-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Le séminaire annuel de la Commission de recherche translationnelle de la SRLF a pour but de réunir des cliniciens et scientifiques autour de grandes thématiques de recherche en médecine intensive et réanimation. La quatrième édition du séminaire a porté sur l’infectiologie, thématique au centre des préoccupations des réanimateurs. Les interventions se sont ainsi focalisées sur des aspects aussi divers que les relations hôtes–pathogènes, la contribution de pathogènes dans des pathologies habituellement considérées comme non infectieuses, l’émergence de nouveaux risques infectieux, les avancées technologiques du diagnostic moléculaire des infections et le développement de stratégies antibactériennes alternatives à l’antibiothérapie classique.
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Segelman J, Mattsson I, Jung B, Nilsson PJ, Palmer G, Buchli C. Risk factors for anastomotic leakage following ileosigmoid or ileorectal anastomosis. Colorectal Dis 2018; 20:304-311. [PMID: 29059489 DOI: 10.1111/codi.13938] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 09/18/2017] [Indexed: 02/06/2023]
Abstract
AIM Reconstruction with an ileosigmoidal anastomosis (ISA) or ileorectal anastomosis (IRA) is a surgical option after a subtotal colectomy. Anastomotic leakage (AL) is a problematic complication and high rates have been reported, but there is limited understanding of the risk factors involved. The aim of this study was to assess the established and potential predictors of AL following ISA and IRA. METHOD This was a retrospective cohort study including all patients who had undergone ISA or IRA at three Swedish referral centres for colorectal surgery between January 2007 and March 2015. Data regarding clinical characteristics, treatment and outcome were collected from medical records. Univariate and multivariate logistic regression models were used to determine the association between patient and treatment related factors and the cumulative incidence of AL. RESULTS In total, 227 patients were included. Overall, AL was detected amongst 30 patients (13.2%). Amongst patients undergoing colectomy with synchronous ISA or IRA (one-stage procedure), AL occurred in 23 out of 120 (19.2%) compared with seven out of 107 (6.5%) after stoma reversal with ISA or IRA (two-stage procedure) (P = 0.004). In addition, the multivariate analyses revealed a statistically significantly lower odds ratio for AL following a two-stage procedure (OR 0.10, 95% CI 0.03-0.41, P = 0.001). CONCLUSIONS This study confirms high rates of AL following ISA and IRA. In particular, a synchronous procedure with colectomy and ISA/IRA carries a high risk of AL.
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Affiliation(s)
- J Segelman
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Surgery, Ersta Hospital, Stockholm, Sweden
| | - I Mattsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - B Jung
- Department of Surgery and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - P J Nilsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - G Palmer
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - C Buchli
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
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Jung B, van Mulligen EM, van Ginneken A, Pardon S, Sottile PA, Grimson W. Extensions to the HISA Standard – the SynEx Computing Environment. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives: This paper reports on the integration work required to support the delivery of healthcare. Specifically, four elements are included being: the DHE (a standards based distributed healthcare environment), Synapses which is a patient record server, XML as a technology to deliver records, and finally two client applications that facilitate structured data entry (SDE) and the remote booking of specialist services. Methods: A general motivation for the work is presented and augmented on hand of a clinical scenario. Additionally, the adoption of a middleware approach is reviewed. The role of computerised patient records is described followed by an account of a federated record server. The approach favoured by standards bodies in utilising XML is covered and the tailoring to suit the needs of the integration is explained. The main practical challenges in achieving integration are presented, one of these being the mapping between the DHE data model and the Synapses server record architecture.
Results: The described environment has been demonstrated to provide the functionality that is required and in addition it has been shown that the engineering challenges can be met in a controlled and orderly manner.
Conclusions: The role of the DHE middleware component acting as an ‘anchor’ has been shown to be a valid one onto which other specialised components can be added to provide a richer service environment. Additionally, it has been demonstrated that XML is a good candidate technology that facilitates connectivity to client applications over an extranet. The demands inherent in both the clinical scenario and the computerised patient record can be met by the computing environment described in the paper.
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Dupont H, Massias L, Jung B, Ammenouche N, Montravers P. Pharmacokinetic study of anidulafungin in ICU patients with intra-abdominal candidiasis. J Antimicrob Chemother 2018; 72:1429-1432. [PMID: 28088767 DOI: 10.1093/jac/dkw568] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 12/12/2016] [Indexed: 01/10/2023] Open
Abstract
Background Only limited pharmacokinetic data are available for anidulafungin in ICU patients, especially in patients treated for severe intra-abdominal infection (IAI). Methods This was a prospective multicentre observational study in ICU patients with suspected yeast IAI. All patients received an intravenous loading dose of 200 mg of anidulafungin, followed by 100 mg/day. Thirteen blood samples were drawn between day 1 and day 5 for pharmacokinetic analysis. Samples were analysed by an HPLC-tandem MS method. Demographics and SAPS2 and SOFA scores were recorded. Results Fourteen patients with a median age (IQR) of 62 years (48-70) and with a mean BMI of 30.5 kg/m 2 were included from three centres; 57.1% were women. Their median (IQR) SAPS2 score was 54 (45-67) and their median (IQR) SOFA score was 8 (7-12). Six patients with community-acquired IAI and eight patients with nosocomial-acquired IAI were included. Twelve yeasts were isolated: six Candida albicans , two Candida glabrata , two Candida tropicalis , one Candida parapsilosis and one Candida krusei . Pharmacokinetic parameters were as follows [mean (% coefficient of variation)]: C max (mg/L) = 6.0 (29%); T max (h) = 1.6 (25.8%); C min (mg/L) = 3.2 (36.8%); AUC 0-24 (mg·h/L) = 88.9 (38.6%); t 1/2 (h) = 42.1 (68.2%); CL (L/h) = 1.2 (42.3%); and V (L) = 72.8 (87.8%). A two-compartment model best described the anidulafungin concentrations in the population pharmacokinetic study. Conclusions The pharmacokinetic parameters of anidulafungin in critically ill ICU patients with complicated IAI are similar to those observed in the literature. However, an increased V and a longer t 1/2 were observed in this study. (EudraCT No. 2010-018695-25).
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Affiliation(s)
- H Dupont
- Department of Anaesthesiology and Critical Care Medicine, CHU Amiens Picardie, Amiens, France.,INSERM UMR 1088, University of Picardy Jules Verne, Amiens, France
| | - L Massias
- Pharmacology-Toxicology Laboratory, CHU Bichat Claude Bernard, Paris, France.,IAME, UMR 1137, University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - B Jung
- Department of Anaesthesiology and Critical Care Medicine, CHU Saint-Eloi, Montpellier, France
| | - N Ammenouche
- Department of Anaesthesiology and Critical Care Medicine, CHU Amiens Picardie, Amiens, France
| | - P Montravers
- Department of Anaesthesiology and Critical Care Medicine, CHU Bichat Claude Bernard, Paris, France
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Schuster A, Jung B, Hofbauer J, Kühne L, Zecher D, Banas B, Bergler T. B-cell activating factor BAFF reflects patients' immunological risk profile after kidney transplantation. Transpl Immunol 2017; 45:35-41. [PMID: 28867309 DOI: 10.1016/j.trim.2017.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 06/14/2017] [Revised: 08/25/2017] [Accepted: 08/25/2017] [Indexed: 10/18/2022]
Abstract
The B-cell activating factor BAFF plays an important role in the development and maturation of B-lymphocytes, which can contribute to the generation of donor-specific antibodies and thus may influence graft function and graft survival. Inconsistent data on the role of BAFF levels after renal transplantation for the formation of donor-specific antibodies and the contribution for allograft rejection exist. The aim of the current study was to determine to what extent the degree of pre-immunization is reflected by each patient's BAFF levels before transplantation and in the follow-up. Furthermore, the impact of BAFF on allograft rejection frequency as well as severity and resulting allograft function over time was analyzed. Additionally, the impact of viral infections on BAFF levels after transplantation - as a potential confounder - was examined. For this purpose, a group of pre-sensitized patients (PRA>0%, (52±24% on average), n=40) was compared with non-sensitized patients (PRA=0%, n=62) and in a subsequent analysis stratification in accordance to the detected BAFF level was performed. Pre-sensitized patients had significantly higher BAFF levels before transplantation and suffered significantly more often from early steroid-resistant, mainly antibody-mediated rejections. A result which was confirmed also in highly sensitized patients with PRA levels >50%. Additionally, in the follow-up patients with either rising BAFF levels over time or BAFF levels above the median also had significantly more often antibody mediated rejections. Additionally, patients with BAFF levels above detected median even displayed impaired creatinine values as well as an induced eGFR slope up to month 48 after transplantation. The occurrence of viral infections (CMV, BKV) was only an additional influencing factor in the absence of concomitant allograft rejections. Therefore, the B-cell proliferation factor BAFF appears not only to reflect the immunological risk profile of patients in the context of kidney transplantation, it may possibly be further developed as a predictor of patients with an increased risk profile for subsequent allograft rejection and impaired allograft function.
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Affiliation(s)
- A Schuster
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany.
| | - B Jung
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - J Hofbauer
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - L Kühne
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - D Zecher
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - B Banas
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - T Bergler
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
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44
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Yu W, Seo W, Tan T, Jung B, Ziaie B. A diaper-embedded disposable nitrite sensor with integrated on-board urine-activated battery for UTI screening. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:303-306. [PMID: 28268337 DOI: 10.1109/embc.2016.7590700] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This paper reports a low-cost solution to the early detection of urinary nitrite, a common surrogate for urinary tract infection (UTI). We present a facile method to fabricate a disposable and flexible colorimetric [1] nitrite sensor and its urine-activated power source [2] on a hydrophobic (wax) paper through laser-assisted patterning and lamination. Such device, integrated with interface circuitry and a Bluetooth low energy (BLE) module can be embedded onto a diaper, and transmit semi-quantitative UTI monitoring information in a point-of-care and autonomous fashion. The proposed nitrite sensing platform achieves a sensitivity of 1.35 ms/(mg/L) and a detection limit of 4 mg/L.
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45
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Yang PS, Kim TH, Uhm JS, Jung B, Lee MH, Pak HN. P1378Cardioembolic and non-cardioembolic risk factors for ischemic stroke in patients with non-valvlular atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux158.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Yang PS, Kim TH, Uhm JS, Kim JY, Pak HN, Jung B, Lee MH. P1379Atrial fibrillation, bone marrow density and the risk of fracture in patients with osteoporosis. Europace 2017. [DOI: 10.1093/ehjci/eux158.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Yang PS, Kim TH, Uhm JS, Jung B, Lee MH, Pak HN. P1581Genetic polymorphism of Ryanodine receptor 2 and left atrial voltage in patients with atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux158.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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48
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Nieberl P, Ehrl C, Pommerrenig B, Graus D, Marten I, Jung B, Ludewig F, Koch W, Harms K, Flügge UI, Neuhaus HE, Hedrich R, Sauer N. Functional characterisation and cell specificity of BvSUT1, the transporter that loads sucrose into the phloem of sugar beet (Beta vulgaris L.) source leaves. Plant Biol (Stuttg) 2017; 19:315-326. [PMID: 28075052 DOI: 10.1111/plb.12546] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/07/2017] [Indexed: 05/08/2023]
Abstract
Sugar beet (Beta vulgaris L.) is one of the most important sugar-producing plants worldwide and provides about one third of the sugar consumed by humans. Here we report on molecular characterisation of the BvSUT1 gene and on the functional characterisation of the encoded transporter. In contrast to the recently identified tonoplast-localised sucrose transporter BvTST2.1 from sugar beet taproots, which evolved within the monosaccharide transporter (MST) superfamily, BvSUT1 represents a classical sucrose transporter and is a typical member of the disaccharide transporter (DST) superfamily. Transgenic Arabidopsis plants expressing the β-GLUCURONIDASE (GUS) reporter gene under control of the BvSUT1-promoter showed GUS histochemical staining of their phloem; an anti-BvSUT1-antiserum identified the BvSUT1 transporter specifically in phloem companion cells. After expression of BvSUT1 cDNA in bakers' yeasts (Saccharomyces cerevisiae) uptake characteristics of the BvSUT1 protein were studied. Moreover, the sugar beet transporter was characterised as a proton-coupled sucrose symporter in Xenopus laevis oocytes. Our findings indicate that BvSUT1 is the sucrose transporter that is responsible for loading of sucrose into the phloem of sugar beet source leaves delivering sucrose to the storage tissue in sugar beet taproot sinks.
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Affiliation(s)
- P Nieberl
- Molecular Plant Physiology (MPP), FAU Erlangen-Nürnberg, Erlangen, Germany
| | - C Ehrl
- Molecular Plant Physiology (MPP), FAU Erlangen-Nürnberg, Erlangen, Germany
| | - B Pommerrenig
- Molecular Plant Physiology (MPP), FAU Erlangen-Nürnberg, Erlangen, Germany
| | - D Graus
- Biophysics and Molecular Plant Physiology, University of Würzburg, Würzburg, Germany
| | - I Marten
- Biophysics and Molecular Plant Physiology, University of Würzburg, Würzburg, Germany
| | - B Jung
- Plant Physiology, University of Kaiserslautern, Kaiserslautern, Germany
| | - F Ludewig
- Biocenter Cologne, Botanical Institute II and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - W Koch
- KWS Saat AG, Einbeck, Germany
| | - K Harms
- SÜDZUCKER AG, CRDS, Obrigheim/Pfalz, Germany
| | - U-I Flügge
- Biocenter Cologne, Botanical Institute II and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - H E Neuhaus
- Plant Physiology, University of Kaiserslautern, Kaiserslautern, Germany
| | - R Hedrich
- Biophysics and Molecular Plant Physiology, University of Würzburg, Würzburg, Germany
| | - N Sauer
- Molecular Plant Physiology (MPP), FAU Erlangen-Nürnberg, Erlangen, Germany
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Principe DR, Diaz AM, Torres C, Mangan RJ, DeCant B, McKinney R, Tsao MS, Lowy A, Munshi HG, Jung B, Grippo PJ. TGFβ engages MEK/ERK to differentially regulate benign and malignant pancreas cell function. Oncogene 2017; 36:4336-4348. [PMID: 28368414 PMCID: PMC5537609 DOI: 10.1038/onc.2016.500] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/09/2016] [Accepted: 11/29/2016] [Indexed: 12/26/2022]
Abstract
While TGFβ signals are anti-proliferative in benign and well-differentiated pancreatic cells, TGFβ appears to promote the progression of advanced cancers. To better understand dysregulation of the TGFβ pathway, we first generated mouse models of neoplastic disease with TGFβ receptor deficiencies. These models displayed reduced levels of pERK irrespective of KRAS mutation. Furthermore, exogenous TGFβ led to rapid and sustained TGFBR1-dependent ERK phosphorylation in benign pancreatic duct cells. Similar to results that our group has published in colon cancer cells, inhibition of ERK phosphorylation in duct cells mitigated TGFβ-induced upregulation of growth suppressive pSMAD2 and p21, prevented downregulation of the pro-growth signal CDK2 and ablated TGFβ-induced EMT. These observations suggest that ERK is a key factor in growth suppressive TGFβ signals, yet may also contribute to detrimental TGFβ signaling such as EMT. In neoplastic PanIN cells, pERK was not necessary for either TGFβ-induced pSMAD2 phosphorylation or CDK2 repression, but was required for upregulation of p21 and EMT indicating a partial divergence between TGFβ and MEK/ERK in early carcinogenesis. In cancer cells, pERK had no effect on TGFβ-induced upregulation of pSMAD2 and p21, suggesting the two pathways have completely diverged with respect to the cell cycle. Furthermore, inhibition of pERK both reduced levels of CDK2 and prevented EMT independent of exogenous TGFβ, consistent with most observations identifying pERK as a tumor promoter. Combined, these data suggest that during carcinogenesis pERK initially facilitates and later antagonizes TGFβ-mediated cell cycle arrest, yet remains critical for the pathological, EMT-inducing arm of TGFβ signaling.
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Affiliation(s)
- D R Principe
- University of Illinois College of Medicine, Chicago, IL, USA
| | - A M Diaz
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - C Torres
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - R J Mangan
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - B DeCant
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - R McKinney
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - M-S Tsao
- Ontario Cancer Institute/Princess Margaret Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - A Lowy
- Department of Surgery, University of California San Diego, San Diego, CA, USA
| | - H G Munshi
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - B Jung
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - P J Grippo
- Department of Medicine, University of Illinois, Chicago, IL, USA
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50
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Magnin E, Dumurgier J, Bouaziz-Amar E, Bombois S, Wallon D, Gabelle A, Lehmann S, Blanc F, Bousiges O, Hannequin D, Jung B, Miguet-Alfonsi C, Quillard M, Pasquier F, Peoc’h K, Laplanche JL, Hugon J, Paquet C. Les biomarqueurs du liquide cérébro-spinal dans la maladie d’Alzheimer : un outil de recherche utile dans la pratique clinique courante des consultations mémoire pour les cas complexes. Rev Med Interne 2017; 38:250-255. [DOI: 10.1016/j.revmed.2016.10.383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 07/19/2016] [Accepted: 10/18/2016] [Indexed: 01/08/2023]
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