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Izda V, Schlupp L, Prinz E, Dyson G, Barrett M, Dunn CM, Nguyen E, Sturdy C, Jeffries MA. Murine cartilage microbial DNA deposition occurs rapidly following the introduction of a gut microbiome and changes with obesity, aging, and knee osteoarthritis. GeroScience 2024; 46:2317-2341. [PMID: 37946009 PMCID: PMC10828335 DOI: 10.1007/s11357-023-01004-z] [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: 08/24/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023] Open
Abstract
Cartilage microbial DNA patterns have been recently characterized in osteoarthritis (OA). The objectives of this study were to evaluate the gut origins of cartilage microbial DNA, to characterize cartilage microbial changes with age, obesity, and OA in mice, and correlate these to gut microbiome changes. We used 16S rRNA sequencing performed longitudinally on articular knee cartilage from germ-free (GF) mice following oral microbiome inoculation and cartilage and cecal samples from young and old wild-type mice with/without high-fat diet-induced obesity (HFD) and with/without OA induced by destabilization of the medial meniscus (DMM) to evaluate gut and cartilage microbiota. Microbial diversity was assessed, groups compared, and functional metagenomic profiles reconstructed. Findings were confirmed in an independent cohort by clade-specific qPCR. We found that cartilage microbial patterns developed at 48 h and later timepoints following oral microbiome inoculation of GF mice. Alpha diversity was increased in SPF mouse cartilage samples with age (P = 0.013), HFD (P = 5.6E-4), and OA (P = 0.029) but decreased in cecal samples with age (P = 0.014) and HFD (P = 1.5E-9). Numerous clades were altered with aging, HFD, and OA, including increases in Verrucomicrobia in both cartilage and cecal samples. Functional analysis suggested changes in dihydroorotase, glutamate-5-semialdehyde dehydrogenase, glutamate-5-kinase, and phosphoribosylamine-glycine ligase, in both cecum and cartilage, with aging, HFD, and OA. In conclusion, cartilage microbial DNA patterns develop rapidly after the introduction of a gut microbiome and change in concert with the gut microbiome during aging, HFD, and OA in mice. DMM-induced OA causes shifts in both cartilage and cecal microbiome patterns independent of other factors.
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Affiliation(s)
- Vladislav Izda
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
- Icahn School of Medicine, Mt. Sinai, New York, NY, USA
| | - Leoni Schlupp
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Emmaline Prinz
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Gabby Dyson
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Montana Barrett
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Christopher M Dunn
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
- Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Emily Nguyen
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Cassandra Sturdy
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA
| | - Matlock A Jeffries
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, 825 NE 13th Street, Laboratory MC400, Oklahoma City, OK, 73104, USA.
- Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- VA Medical Center, Oklahoma City, OK, USA.
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Prinz E, Schlupp L, Dyson G, Barrett M, Szymczak A, Velasco C, Izda V, Dunn CM, Jeffries MA. OA susceptibility in mice is partially mediated by the gut microbiome, is transferrable via microbiome transplantation and is associated with immunophenotype changes. Ann Rheum Dis 2024; 83:382-393. [PMID: 37979958 PMCID: PMC10922159 DOI: 10.1136/ard-2023-224907] [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: 08/23/2023] [Accepted: 11/03/2023] [Indexed: 11/20/2023]
Abstract
OBJECTIVES The Murphy Roths Large (MRL)/MpJ 'superhealer' mouse strain is protected from post-traumatic osteoarthritis (OA), although no studies have evaluated the microbiome in the context of this protection. This study characterised microbiome differences between MRL and wild-type mice, evaluated microbiome transplantation and OA and investigated microbiome-associated immunophenotypes. METHODS Cecal material from mixed sex C57BL6/J (B6) or female MRL/MpJ (MRL) was transplanted into B6 and MRL mice, then OA was induced by disruption of the medial meniscus surgery (DMM). In other experiments, transplantation was performed after DMM and transplantation was performed into germ-free mice. Transplanted mice were bred through F2. OARSI, synovitis and osteophyte scores were determined blindly 8 weeks after DMM. 16S microbiome sequencing was performed and metagenomic function was imputed. Immunophenotypes were determined using mass cytometry. RESULTS MRL-into-B6 transplant prior to DMM showed reduced OA histopathology (OARSI score 70% lower transplant vs B6 control), synovitis (60% reduction) and osteophyte scores (30% reduction) 8 weeks after DMM. When performed 48 hours after DMM, MRL-into-B6 transplant improved OA outcomes but not when performed 1-2 weeks after DMM. Protection was seen in F1 (60% reduction) and F2 progeny (30% reduction). Several cecal microbiome clades were correlated with either better (eg, Lactobacillus, R=-0.32, p=0.02) or worse (eg, Rikenellaceae, R=0.43, p=0.001) OA outcomes. Baseline immunophenotypes associated with MRL-into-B6 transplants and MRL included reduced double-negative T cells and increased CD25+CD4+ T cells. CONCLUSION The gut microbiome is responsible in part for OA protection in MRL mice and is transferrable by microbiome transplantation. Transplantation induces resting systemic immunophenotyping changes that correlate with OA protection.
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Affiliation(s)
- Emmaline Prinz
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
- Division of Rheumatology, Immunology, and Allergy, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Leoni Schlupp
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Gabby Dyson
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Montana Barrett
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Aleksander Szymczak
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Cassandra Velasco
- Division of Rheumatology, Immunology, and Allergy, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Vladislav Izda
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Christopher M Dunn
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
- Division of Rheumatology, Immunology, and Allergy, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Matlock A Jeffries
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
- Division of Rheumatology, Immunology, and Allergy, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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Schlupp L, Prinz E, Dyson G, Barrett M, Izda V, Dunn CM, Jeffries MA. Sex-Linked Discrepancies in C57BL6/J Mouse Osteoarthritis are Associated With the Gut Microbiome and are Transferrable by Microbiome Transplantation. Arthritis Rheumatol 2024; 76:231-237. [PMID: 37651283 PMCID: PMC10842085 DOI: 10.1002/art.42687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 08/08/2023] [Accepted: 08/21/2023] [Indexed: 09/02/2023]
Abstract
OBJECTIVE Females have reduced osteoarthritis (OA) in surgical models. The objective of the current study was to evaluate a sex-linked gut microbiome in the pathogenesis of OA. METHODS We induced OA via destabilization of the medial meniscus surgery in adult male and female C57BL6/J mice with and without opposite-sex microbiome transplantation. Eight weeks later, animals were euthanized, and OA severity, synovitis, and osteophyte scores were determined. Serum lipopolysaccharide was measured chromogenically, and serum cytokines were quantified via multiplex immunoassay. Cecal microbiome profiles were generated using 16S deep sequencing. RESULTS Males had worse OA histology (3.5x, P = 6 × 10-7 ), synovitis (2.4x, P = 5 × 10-4 ), and osteophyte scores (3.7x, P = 3 × 10-4 ) than females. Male-into-female transplantation worsened all outcomes (histology 1.8x, P = 0.02; synovitis 2.0x, P = 3 × 10-5 ; osteophyte 2.1x, P = 0.01) compared to females, whereas female-into-male transplantation improved all outcomes except for synovitis (histology 0.53x, P = 2 × 10-4 ; osteophyte 0.28x, P = 5 × 10-4 ) compared to males. In the gut microbiome analysis, 44 clades were different in at least one group comparison; 5 clades were correlated with the Osteoarthritis Research Society International score (Lactobacillus R = -0.40, Aldercreutzia R = -0.40, rc4_4 R = -0.55, Sutterella R = -0.37, and Clostridiales R = 0.36). In the cytokine analysis, 10 analytes were different in at least one group comparison; 3 were different in two groups (female and female-into-male transplants vs male comparisons, all reduced in female and female-into-male transplants), including interleukin-12 (0.66x, P = 0.02; 0.66x, P = 0.02, respectively), eotaxin (0.74x, P = 5 × 10-6 ; 0.57x, P = 0.03), and tumor necrosis factor ⍺ (0.49x, P = 0.03; 0.52x, P = 0.009). CONCLUSION Sex-linked differences in the mouse gut microbiome are associated with OA outcomes, are reversible by opposite-sex microbiome transplantation, and are associated with serum cytokine changes.
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Affiliation(s)
- Leoni Schlupp
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
| | - Emmaline Prinz
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
| | - Gabriella Dyson
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
| | - Montana Barrett
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
| | - Vladislav Izda
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
| | - Christopher M. Dunn
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
| | - Matlock A. Jeffries
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, OK
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
- Oklahoma City VA Medical Center, Oklahoma City, OK
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Dunn CM, Sturdy C, Velasco C, Schlupp L, Prinz E, Izda V, Arbeeva L, Golightly YM, Nelson AE, Jeffries MA. Peripheral Blood DNA Methylation-Based Machine Learning Models for Prediction of Knee Osteoarthritis Progression: Biologic Specimens and Data From the Osteoarthritis Initiative and Johnston County Osteoarthritis Project. Arthritis Rheumatol 2023; 75:28-40. [PMID: 36411273 PMCID: PMC9797424 DOI: 10.1002/art.42316] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/08/2022] [Accepted: 07/20/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The lack of accurate biomarkers to predict knee osteoarthritis (OA) progression is a key unmet need in OA clinical research. The objective of this study was to develop baseline peripheral blood epigenetic biomarker models to predict knee OA progression. METHODS Genome-wide buffy coat DNA methylation patterns from 554 individuals from the Osteoarthritis Biomarkers Consortium (OABC) were determined using Illumina Infinium MethylationEPIC 850K arrays. Data were divided into model development and validation sets, and machine learning models were trained to classify future OA progression by knee pain, radiographic imaging, knee pain plus radiographic imaging, and any progression (pain, radiographic, or both). Parsimonious models using the top 13 CpG sites most frequently selected during development were tested on independent samples from participants in the Johnston County Osteoarthritis (JoCo OA) Project (n = 128) and a previously published Osteoarthritis Initiative (OAI) data set (n = 55). RESULTS Full models accurately classified future radiographic-only progression (mean ± SEM accuracy 87 ± 0.8%, area under the curve [AUC] 0.94 ± 0.004), pain-only progression (accuracy 89 ± 0.9%, AUC 0.97 ± 0.004), pain plus radiographic progression (accuracy 72 ± 0.7%, AUC 0.79 ± 0.006), and any progression (accuracy 78 ± 0.4%, AUC 0.86 ± 0.004). Pain-only and radiographic-only progressors were not distinguishable (mean ± SEM accuracy 58 ± 1%, AUC 0.62 ± 0.001). Parsimonious models showed similar performance and accurately classified future radiographic progressors in the OABC cohort and in both validation cohorts (mean ± SEM accuracy 80 ± 0.3%, AUC 0.88 ± 0.003 [using JoCo OA Project data], accuracy 80 ± 0.8%, AUC 0.89 ± 0.002 [using previous OAI data]). CONCLUSION Our data suggest that pain and structural progression share similar early systemic immune epigenotypes. Further studies should focus on evaluating the pathophysiologic consequences of differential DNA methylation and peripheral blood cell epigenotypes in individuals with knee OA.
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Affiliation(s)
- Christopher M. Dunn
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
| | - Cassandra Sturdy
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
| | - Cassandra Velasco
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
| | - Leoni Schlupp
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
| | - Emmaline Prinz
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
| | | | - Liubov Arbeeva
- University of North Carolina at Chapel Hill, Thurston Arthritis Research Center, Chapel Hill, NC
| | - Yvonne M. Golightly
- University of North Carolina at Chapel Hill, Thurston Arthritis Research Center, Chapel Hill, NC
- University of Nebraska Medical Center, College of Allied Health Professions, Omaha, NE
| | - Amanda E. Nelson
- University of North Carolina at Chapel Hill, Thurston Arthritis Research Center, Chapel Hill, NC
| | - Matlock A. Jeffries
- University of Oklahoma Health Sciences Center, Department of Internal Medicine, Division of Rheumatology, Immunology, and Allergy, Oklahoma City, OK
- Oklahoma Medical Research Foundation, Arthritis and Clinical Immunology Program, Oklahoma City, OK
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Izda V, Dunn CM, Prinz E, Schlupp L, Nguyen E, Sturdy C, Jeffries MA. A Pilot Analysis of Genome-Wide DNA Methylation Patterns in Mouse Cartilage Reveals Overlapping Epigenetic Signatures of Aging and Osteoarthritis. ACR Open Rheumatol 2022; 4:1004-1012. [PMID: 36253145 PMCID: PMC9746664 DOI: 10.1002/acr2.11506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 09/25/2022] [Accepted: 09/25/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Cartilage epigenetic changes are strongly associated with human osteoarthritis (OA). However, the influence of individual environmental OA risk factors on these epigenetic patterns has not been determined; herein we characterize cartilage DNA methylation patterns associated with aging and OA in a mouse model. METHODS Murine knee cartilage DNA was extracted from healthy young (16-week, n = 6), old (82-week, n = 6), and young 4-week post-destabilization of the medial meniscus (DMM) OA (n = 6) C57BL6/J mice. Genome-wide DNA methylation patterns were determined via Illumina BeadChip. Gene set enrichment analysis was performed by Ingenuity Pathway Analysis. The top seven most differentially methylated positions (DMPs) were confirmed by pyrosequencing in an independent animal set. Results were compared to previously published human OA methylation data. RESULTS Aging was associated with 20,940 DMPs, whereas OA was associated with 761 DMPs. Merging these two conditions revealed 279 shared DMPs. All demonstrated similar directionality and magnitude of change (Δβ 1.0% ± 0.2%, mean methylation change ± SEM). Shared DMPs were enriched in OA-associated pathways, including RhoA signaling (P = 1.57 × 10-4 ), protein kinase A signaling (P = 3.38 × 10-4 ), and NFAT signaling (P = 6.14 × 10-4 ). Upstream regulators, including TET3 (P = 6.15 × 10-4 ), immunoglobulin (P = 6.14 × 10-4 ), and TLR7 (P = 7.53 × 10-4 ), were also enriched. Pyrosequencing confirmed six of the seven top DMPs in an independent cohort. CONCLUSION Aging and early OA following DMM surgery induce similar DNA methylation changes within a murine OA model, suggesting that aging may induce pro-OA epigenetic "poising" within articular cartilage. Future research should focus on confirming and expanding these findings to other environmental OA risk factors, including obesity, as well as determining late OA changes in mice.
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Affiliation(s)
- Vladislav Izda
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, and Icahn School of Medicine at Mt. Sinai, New York
| | - Christopher M Dunn
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program and University of Oklahoma Health Sciences Center, Oklahoma City
| | - Emmaline Prinz
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, Oklahoma
| | - Leoni Schlupp
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, Oklahoma
| | - Emily Nguyen
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, Oklahoma
| | - Cassandra Sturdy
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program, Oklahoma City, Oklahoma
| | - Matlock A Jeffries
- Oklahoma Medical Research Foundation, Arthritis & Clinical Immunology Program and University of Oklahoma Health Sciences Center, Oklahoma City
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Brandt MC, Prinz E, Wintersteller W, Schernthaner C, Hammerer M, Kraus J, Danmayr F, Strohmer B, Pretsch I, Lichtenauer M, Motloch LJ, Hoppe UC, Nairz O. Effective reduction of scatter radiation for operator and assistant during coronary procedures with a suspended radiation protection system in a per-procedure live-dosimetry analysis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2098] [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: 11/14/2022] Open
Abstract
Abstract
Background
Interventional cardiologists (IC) are exposed to the highest doses of radiation compared to all other medical specialties. Although head and eyes are exposed to a significant dose of scatter radiation (SCR), precise per-procedure data is sparse. Recently, the EU guidelines for maximum eye lens SCR doses have been reduced from 150 mSv to 20 mSv per year. A ceiling suspended operator radiation protection system has shown additional benefits for SCR protection in radiologic interventional procedures.
Purpose
To study the impact of the ZG system on IC and sterile assistant (SA) SCR exposure when used in addition to the current standard of X-ray protection (SXP) in unselected all-comers cardiologic procedures.
Methods
IC and SA were equipped with Unfors RaySafe i3 live-dosimeters at prespecified locations. 181 consecutive cardiac procedures were recorded, in which either both IC and SA were using SXP (lead apron, thyroid shield) or the IC was using the ZG system and the SA was wearing SXP. In all procedures a suspended lead shield, patient lead cover and an adjustable lead side-shield were present. Diagnostic angiographies (DA) and interventions (PCI) were grouped separately. Within both groups, the IC's and SA's SCR doses were compared.
Results
SCR doses were recorded in 100 DA and 81 PCI procedures. Compared to SXP, the use of the ZG device reduced the average SCR doses per procedure of the IC recorded at the left lateral head from 5.18±1.11 μSv to 0.60±0.07 μSv in DA (−88%; n=49/49, p<0.0001) and from 19.64±3.36 μSv to 1.05±0.28 μSv for PCI (−95%; n=54/23, p=0.0006). The IC's average frontal dose at eye level was reduced from 1.38±0.33 μSv to 0.36±0.04 μSv in DA (−74%; n=50/50, p=0.0033) and from 3.33±0.53 μSv to 0.88±0.20 μSv in PCI (−74%; n=55/25, p=0.0031). Consistently, the dose recorded immediately under the IC's left shoulder were reduced from 34.14±7.79 μSv to 1.59±0.32 μSv in DA (−95%; n=39/40, p=0.0001) and from 71.77±10.77 μSv to 3.95±0.83 μSv in PCI (−94%; n=44/23, p=0.0001). Furthermore, when the IC used the ZG system, the average SCR dose recorded at the SA's head was reduced from 4.32±0.98 μSv to 2.11±0.28 μSv in DA (−51%, n=45/49, p=0.027) and from 18.55±2.69 μSv to 6.93±1.93 μSv in PCI (−63%, n=54/24, p=0.0078). With the exception of the IC frontal dose, all SCR dose effects remained significant after correction for total radiation time (μSv/s) and dose-area product (μSv/Gy·cm2). Procedure duration, contrast use and patient radiation dose were not affected by ZG use.
Conclusions
In a representative all-comers cohort of cardiac procedures, the ZG X-ray protection system demonstrated an impressive potential for SCR reduction in critical anatomical areas - even in a state-of-the-art cath-lab inventory with multiple SCR reduction measures already in place. Remarkably, the protective effect also included the sterile assistant at the table wearing SXP.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M C Brandt
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - E Prinz
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - W Wintersteller
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - C Schernthaner
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - M Hammerer
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - J Kraus
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - F Danmayr
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - B Strohmer
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - I Pretsch
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - M Lichtenauer
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - L J Motloch
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - U C Hoppe
- Paracelsus Medical University, Clinic II of Internal Medicine, Salzburg, Austria
| | - O Nairz
- Paracelsus Medical University, Radiation Safety Office, Salzburg, Austria
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Lloyd-Hughes J, Oppeneer PM, Pereira Dos Santos T, Schleife A, Meng S, Sentef MA, Ruggenthaler M, Rubio A, Radu I, Murnane M, Shi X, Kapteyn H, Stadtmüller B, Dani KM, da Jornada FH, Prinz E, Aeschlimann M, Milot RL, Burdanova M, Boland J, Cocker T, Hegmann F. The 2021 ultrafast spectroscopic probes of condensed matter roadmap. J Phys Condens Matter 2021; 33:353001. [PMID: 33951618 DOI: 10.1088/1361-648x/abfe21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/05/2021] [Indexed: 06/12/2023]
Abstract
In the 60 years since the invention of the laser, the scientific community has developed numerous fields of research based on these bright, coherent light sources, including the areas of imaging, spectroscopy, materials processing and communications. Ultrafast spectroscopy and imaging techniques are at the forefront of research into the light-matter interaction at the shortest times accessible to experiments, ranging from a few attoseconds to nanoseconds. Light pulses provide a crucial probe of the dynamical motion of charges, spins, and atoms on picosecond, femtosecond, and down to attosecond timescales, none of which are accessible even with the fastest electronic devices. Furthermore, strong light pulses can drive materials into unusual phases, with exotic properties. In this roadmap we describe the current state-of-the-art in experimental and theoretical studies of condensed matter using ultrafast probes. In each contribution, the authors also use their extensive knowledge to highlight challenges and predict future trends.
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Affiliation(s)
- J Lloyd-Hughes
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - P M Oppeneer
- Department of Physics and Astronomy, Uppsala University, PO Box 516, S-75120 Uppsala, Sweden
| | - T Pereira Dos Santos
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
| | - A Schleife
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
- National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
| | - S Meng
- Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - M A Sentef
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
| | - M Ruggenthaler
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
| | - A Rubio
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
- Nano-Bio Spectroscopy Group and ETSF, Universidad del País Vasco UPV/EHU 20018 San Sebastián, Spain
- Center for Computational Quantum Physics (CCQ), The Flatiron Institute, 162 Fifth Avenue, New York, NY, 10010, United States of America
| | - I Radu
- Department of Physics, Freie Universität Berlin, Germany
- Max Born Institute, Berlin, Germany
| | - M Murnane
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - X Shi
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - H Kapteyn
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - B Stadtmüller
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - K M Dani
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Japan
| | - F H da Jornada
- Department of Materials Science and Engineering, Stanford University, Stanford, 94305, CA, United States of America
| | - E Prinz
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - M Aeschlimann
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - R L Milot
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - M Burdanova
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - J Boland
- Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester, United Kingdom
| | - T Cocker
- Michigan State University, United States of America
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Georg-Schaffner L, Prinz E. Corporate management boards’ information security orientation: an analysis of cybersecurity incidents in DAX 30 companies. J Manag Gov 2021. [DOI: 10.1007/s10997-021-09588-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Peillex M, Marchandot B, Matsushita K, Prinz E, Hess S, Reydel Dedieu A, Carmona A, Heger J, Trimaille A, Petit-Eisenmann H, Trinh A, Jesel L, Ohlmann P, Morel O. Acute kidney injury and Acute kidney recovery following TAVR: Conflicting results with regards to earlier studies. Archives of Cardiovascular Diseases Supplements 2021. [DOI: 10.1016/j.acvdsp.2020.10.164] [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: 10/22/2022]
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10
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Passow D, Prinz E, Maaß C, Wedler K, Bordel U, Schläfke D. Legalbewährung und Konsumverhalten bei Probanden der forensischen Nachsorge nach Unterbringung in einer Entziehungsanstalt (§ 64 StGB). Suchttherapie 2015. [DOI: 10.1055/s-0041-107758] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- D. Passow
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
| | - E. Prinz
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
| | - C. Maaß
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
| | - K. Wedler
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
| | - U. Bordel
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
| | - D. Schläfke
- Klinik für Forensische Psychiatrie – Universitätsmedizin Rostock
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Krummel T, Garstka A, Thiery A, Prinz E, Chantrel F, Kribs M, Klein A, Hannedouche T. Vascularite rénale à ANCA : l’association d’échanges plasmatiques et de bolus de méthylprednisolone semble bénéfique dans les formes sévères. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.343] [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: 11/28/2022]
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Prinz E, Rosner V, Kessler R, Moulin B. Évaluation du risque lithiasique associé à la mucoviscidose. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.014] [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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13
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Hofer-Dückelmann C, Prinz E, Beindl W, Berger K, Fellhofer G, Mutzenbach J, Schuler J. Evaluation of a computerised physician order entry system. Eur J Hosp Pharm 2012. [DOI: 10.1136/ejhpharm-2012-000074.131] [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: 11/04/2022] Open
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14
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Nepstad D, Schwartzman S, Bamberger B, Santilli M, Ray D, Schlesinger P, Lefebvre P, Alencar A, Prinz E, Fiske G, Rolla A. Inhibition of Amazon deforestation and fire by parks and indigenous lands. Conserv Biol 2006; 20:65-73. [PMID: 16909660 DOI: 10.1111/j.1523-1739.2006.00351.x] [Citation(s) in RCA: 163] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Conservation scientists generally agree that many types of protected areas will be needed to protect tropical forests. But little is known of the comparative performance of inhabited and uninhabited reserves in slowing the most extreme form of forest disturbance: conversion to agriculture. We used satellite-based maps of land cover and fire occurrence in the Brazilian Amazon to compare the performance of large (> 10,000 ha) uninhabited (parks) and inhabited (indigenous lands, extractive reserves, and national forests) reserves. Reserves significantly reduced both deforestation and fire. Deforestation was 1.7 (extractive reserves) to 20 (parks) times higher along the outside versus the inside of the reserve perimeters and fire occurrence was 4 (indigenous lands) to 9 (national forests) times higher. No strong difference in the inhibition of deforestation (p = 0. 11) or fire (p = 0.34) was found between parks and indigenous lands. However, uninhabited reserves tended to be located away from areas of high deforestation and burning rates. In contrast, indigenous lands were often created in response to frontier expansion, and many prevented deforestation completely despite high rates of deforestation along their boundaries. The inhibitory effect of indigenous lands on deforestation was strong after centuries of contact with the national society and was not correlated with indigenous population density. Indigenous lands occupy one-fifth of the Brazilian Amazon-five times the area under protection in parks--and are currently the most important barrier to Amazon deforestation. As the protected-area network expands from 36% to 41% of the Brazilian Amazon over the coming years, the greatest challenge will be successful reserve implementation in high-risk areas of frontier expansion as indigenous lands are strengthened. This success will depend on a broad base of political support.
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Affiliation(s)
- D Nepstad
- The Woods Hole Research Center, P.O. Box 296, 13 Church Street, Woods Hole, MA 02543, USA.
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Laufens G, Poltz W, Prinz E, Reimann G, Schmiegelt F. Alternierende Laufband-Vojta-Laufband-Therapie bei stark gehbehinderten Patienten mit multipler Sklerose. Phys Rehab Kur Med 2004. [DOI: 10.1055/s-2003-814921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Rabitsch W, Knöbl P, Prinz E, Keil F, Greinix H, Kalhs P, Worel N, Jansen M, Hörl WH, Derfler K. Prolonged red cell aplasia after major ABO-incompatible allogeneic hematopoietic stem cell transplantation: removal of persisting isohemagglutinins with Ig-Therasorb® immunoadsorption. Bone Marrow Transplant 2003; 32:1015-9. [PMID: 14595389 DOI: 10.1038/sj.bmt.1704264] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Delayed donor red cell engraftment and prolonged red cell aplasia (PRCA) are well-recognized complications of major ABO-incompatible myeloablative and non-myeloablative hematopoietic stem cell transplantation (HSCT). There is an intense debate about the impact on outcome, severity of hemolysis, association with graft-versus-host disease and survival after blood group-incompatible stem cell transplantation. Therefore, therapeutic strategies should be considered to avoid these possible complications. We present five patients, who received allogeneic HSCT from human leukocyte antigen-identical donors for hematological malignancies, which were treated with Ig-Therasorb immunoadsorption (five treatments/week) to remove persisting incompatible isohemagglutinins. After a median of 17 treatments (range 9-25), all the patients became transfusion independent with the presentation of donor's blood group. No side effects occurred during treatment. Ig-Therasorb immunoadsorption seems to be a promising therapeutic method for rapid, efficient and safe elimination for persisting isohemagglutinins for patients with PRCA after allogeneic hematological stem cell transplantation.
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Affiliation(s)
- W Rabitsch
- Department of Medicine I, Bone Marrow Transplantation Unit, University of Vienna, Waehringer Guertel 18-20, Vienna A-1090, Austria.
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Prinz E, Keil F, Kalhs P, Mitterbauer M, Rabitsch W, Rosenmayr A, Moser K, Schulenburg A, Lechner K, Greinix HT. Successful immunotherapy in early relapse of acute myeloid leukemia after nonmyeloablative allogeneic stem cell transplantation. Ann Hematol 2003; 82:295-8. [PMID: 12679886 DOI: 10.1007/s00277-003-0621-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2002] [Accepted: 01/10/2003] [Indexed: 10/25/2022]
Abstract
We report on a 35-year-old woman who underwent allogeneic stem cell transplantation (SCT) in second complete remission (CR) of acute myeloid leukemia (AML) after reduced-intensity conditioning with fludarabine and 2 Gy of total body irradiation. For graft-versus-host disease (GVHD) prophylaxis, cyclosporin A (CsA) and mycophenolate mofetil (MMF) were given. On day 27 after SCT complete hematological remission and donor chimerism was documented. However, in CD34(+) bone marrow cells 28% of recipient hematopoiesis persisted. On day +59 leukemic relapse occurred. After discontinuation of CsA and onset of GVHD, complete donor chimerism and hematological CR were achieved which has been maintained for 14 months.
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Affiliation(s)
- E Prinz
- Department of Medicine I, Bone Marrow Transplantation, University Hospital of Vienna, Vienna, Austria.
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Keil F, Prinz E, Kalhs P, Lechner K, Moser K, Schwarzinger I, Jäger U, Fonatsch C, Worel N, Mannhalter C, Rabitsch W, Loidolt H, Schulenburg A, Mitterbauer M, Höcker P, Greinix HT. Treatment of leukemic relapse after allogeneic stem cell transplantation with cytotoreductive chemotherapy and/or immunotherapy or second transplants. Leukemia 2001; 15:355-61. [PMID: 11237057 DOI: 10.1038/sj.leu.2402048] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We analyzed toxicity and efficacy of chemotherapy (CT) or second stem cell transplantation (SCT) and/or immunotherapy defined as stop of immunosuppression (IS) or donor leukocyte infusion (DLI) in 47 patients relapsing with acute leukemia. Ten patients received no treatment and 14 patients were treated with CT only. In 12 patients IS was stopped and three of them received additional CT. Five patients received DLI after CT as consolidation and one patient as frontline therapy. Five patients received a second SCT. Median overall survival after relapse was 2 months for the untreated patients, 2 months for patients receiving CT only, 2 months in patients after cessation of IS, 17 months in DLI treated patients and three months in patients receiving a second SCT. Fourteen patients achieved remission after relapse. Two with CT (2, 2 months), three with SI (3, 19, 19+ months), six with DLI (3, 8, 9, 14, 20, 36 months) and three with second SCT (2, 4, 6 months). Conventional CT was able do re-establish donor hematopoiesis and patients achieving remission showed a significantly better survival than patients with refractory disease. Patients who were brought into remission by DLI or cessation of IS had a significantly better survival than patients who achieved remission with CT alone or a second SCT. We conclude that a selected group of patients achieving remission with regeneration of donor hematopoiesis following CT might benefit from immunotherapy as consolidation.
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Affiliation(s)
- F Keil
- Department of Medicine I, University of Vienna, Austria
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