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Haerdtner C, Remmersmann F, Von Ehr A, Dederichs TS, Vico T, Krebs K, Wolf D, Sager H, Bode C, Westermann D, Hilgendorf I. NLRP3 mediates atheromatous plaque macrophage proliferation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.3014] [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
Background
Macrophage accumulation in atherosclerotic plaques drives disease progression largely dependent on in situ proliferation. We previously reported that systemic cholesterol lowering or reduced modified lipoprotein uptake supress atheromatous plaque macrophage proliferation. In this work we investigate the intracellular mediators of macrophage proliferation.
Methods and results
Macrophages deficient in scavenger receptors CD36 or Msr1 and impaired in cholesterol-rich lipoprotein uptake, proliferated less compared to control macrophages in the same plaque exposed to the same lipid levels in a LDLR-deficient bone marrow irradiation mixed chimera model. Proliferation of plaque macrophages deficient in the intracellular cholesterol sensor LXR was not impaired, however. As modified LDL uptake can activate the NLRP3 inflammasome, we generated mixed bone marrow knockout chimeras for components of the inflammasome. NLRP3 but not Caspase-1 or interleukin-1 receptor deficient macrophages proliferated 35% less compared to NLRP3-expressing macrophages in the same plaque in vivo. These results were confirmed in NLRP3-deficient oxLDL stimulated macrophages in vitro. In line, NLRP3 inhibition of human carotid artery plaque cultures suppressed human plaque macrophage proliferation and reduced inflammasome-dependent IL-1b secretion. However, IL-1b supplementation did not restore local macrophage proliferation in accord with our findings in IL-1 receptor deficient murine plaque macrophages.
Conclusion
We identified a novel role for NLRP3, independent of the canonical Caspase-1–IL-1b inflammasome pathway, in mediating macrophage proliferation in atherosclerotic plaques in mice and men representing a druggable target.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): DFG
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Affiliation(s)
- C Haerdtner
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - F Remmersmann
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - A Von Ehr
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - T S Dederichs
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - T Vico
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - K Krebs
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - D Wolf
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - H Sager
- German Heart Center Muenchen Technical University of Munich , Munich , Germany
| | - C Bode
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - D Westermann
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
| | - I Hilgendorf
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology , Freiburg , Germany
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Krebs K, Brummer-Holder M, Fowler A, Hayes S, Harlow B. 103 Influence of weather on the dry matter intake of horses and cattle fed a similar diet. J Equine Vet Sci 2021. [DOI: 10.1016/j.jevs.2021.103566] [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: 11/25/2022]
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Fowler A, Hayes S, Krebs K, Brümmer-Holder M. 77 Trace elements in whole blood and mane hair of horses fed varying sources and levels of trace elements. J Equine Vet Sci 2021. [DOI: 10.1016/j.jevs.2021.103540] [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: 11/27/2022]
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Baumgärtner F, Krebs K, Merte B. Zur Emission von Spaltprodukten und Transuranen aus hochradioaktivem Abfall zwischen 200 und 1100 °C / On the emission of fission products and transuranium nuclides from highly radioactive waste between of 200 to 1100 9C. KERNTECHNIK 2021. [DOI: 10.1515/kern-1987-510308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hilgendorf I, Haerdtner C, Kornemann J, Krebs K, Dufner B, Hoppe N, Stachon P, Wolf D, Zirlik A, Princen H, Bode C. P733Cholesterol uptake triggers macrophage proliferation in the plaque. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0337] [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
Background
Guidelines recommend cholesterol lowering for primary and secondary prevention of cardiovascular disease. While lipid lowering has been reported to induce plaque regression, the underlying mechanisms have remained speculative.
Purpose
We hypothesize that lipid uptake triggers local macrophage proliferation in the plaque, and conversely, statin treatment inhibits local macrophage proliferation leading to plaque regression.
Methods
Mixed bone marrow chimeras were generated in LDLR−/− mice reconstituted with wild type and scavenger receptor deficient or cholesterol exporter deficient bone marrow cells to study cell autonomous effects on macrophage proliferation. APOE*3-Leiden.huCETP mice with established atherosclerosis were randomized to three groups: Continued cholesterol diet, cholesterol diet supplemented with 0.01% atorvastatin, and cholesterol free diet for 4 weeks to study mechanisms of plaque regression.
Results
Proliferation of scavenger receptor A and CD36 deficient macrophages with impaired lipid uptake was reduced by 30–50% in the plaque, while ABCA1/ABCG1 exporter deficiency resulted in cholesterol overloading and apoptosis. Oral atorvastatin treatment decreased total plasma cholesterol levels by 50% to the same extend as cholesterol free diet feeding in APOE*3-Leiden.huCETP. Cholesterol lowering resulted in a 50% reduction in local macrophage proliferation and plaque regression with reduced macrophage and lipid contents and increased collagen. GFP bone marrow reconstitution of APOE*3-Leiden.huCETP mice in which the aortas were shielded from irradiation showed infiltrating monocytes to contribute only 11% to the plaque macrophage pool during plaque progression, thereby underscoring the relevance of targeting macrophage proliferation for plaque regression. Finally, rates of macrophage proliferation in human carotid artery plaques correlated with serum LDL-cholesterol levels, in line with our experimental studies.
Conclusion
Foam cell formation in atherosclerotic plaques triggers their proliferation. Targeting macrophage proliferation leads to plaque regression.
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Affiliation(s)
- I Hilgendorf
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - C Haerdtner
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - J Kornemann
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - K Krebs
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - B Dufner
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - N Hoppe
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - P Stachon
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - D Wolf
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
| | - A Zirlik
- Medical University of Graz, Cardiology, Graz, Austria
| | - H Princen
- TNO Research, Leiden, Netherlands (The)
| | - C Bode
- Albert-Ludwig University of Freiburg, Department of Cardiology and Angiology, Freiburg, Germany
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Härdtner C, Kornemann J, Krebs K, Sharipova D, Dufner B, Hoppe N, Pieterman E, H. Princen M, Ho-Tin-Noé B, Bode C, Zirlik A, Hilgendorf I, Ehlert C. Oral Atorvastatin Induces Plaque Regression By Inhibiting Macrophage Proliferation. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.225] [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: 10/26/2022]
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Krebs K, Hayes S, Cassill B, Brummer-Holder M. Postpartum trace element concentrations in mare and foal mane hair and blood. J Equine Vet Sci 2019. [DOI: 10.1016/j.jevs.2019.03.028] [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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Abstract
Purpose To compare long-term efficacy and biocompatibility of the 5 most commonly applied LDL-apheresis techniques using a specifically modified calculation method of the area under the curve (AUC) for laboratory parameters. Design Retrospective long-term analysis of 20 patients with homozygous or severe heterozygous familial hypercholesterolemia. Procedures The following 5 extra-corporeal LDL-apheresis methods were compared: IMAL (Immuno Adsorption of Lipoproteins), DSA (Dextran Sulphate Adsorption), HELP (Heparin Induced Extra-corporeal LDL Precipitation), DALI (Direct Adsorption of Lipoproteins), MDF (Membrane Differential Filtration). Main outcome measures AUC derived plasma concentrations (CAUC) of lipoproteins between two apheresis procedures and their long-term course. Comparison of biocompatibility and efficacy concerning the LDL-C target of < 2.6 mmol/L of 5 apheresis techniques. Progression of atherosclerosis in patients with severe hypercholesterolemia. Main findings The means of AUC derived average plasma concentrations (CAUC) of all treatment intervals were for LDL-C and the LDL/HDL ratio as follows: IMAL (5.59 mmol/L; ratio 4.1), DSA (3.03 mmol/L; ratio 2.0), HELP (4.06 mmol/L; ratio 2.2), DALI (3.83 mmol/L; ratio 3.3), MDF (3.26 mmol/L; ratio 3.2). Coronary heart disease and cardiac events (myocardial infarction, PTCA/ stent implantation, CABG) progressed in only 2 patients whereas atherosclerosis manifestations (sclerosis abdominal aorta, carotid artery stenosis, peripheral vascular disease) worsened in 13 patients. Mean ergometric capacity improved from 112 to 118 Watt. Conclusions All 5 apheresis methods (IMAL, DSA, HELP, DALI, MDF) proved to be safe and suitable for long-term treatment in patients with severe hypercholesterolemia. The introduction of the CAUC revealed that the target of LDL-C < 2.6 mmol/L was not achieved with regard to the time averaged concentration (CAUC).
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Affiliation(s)
- A Krebs
- Division of Nephrology, Medical Faculty, University of Ulm, Germany
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Krebs K, Böttinger N, Huang L, Chmielewski M, Uckert W, Abken H, Heikenwälder M, Knolle P, Protzer U. T cells redirected by a chimeric antigen receptor recognizing HBsAg efficiently control HBV in vivo in transgenic mice. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.020] [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: 10/25/2022]
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Dargel C, Bassani-Sternberg M, Krebs K, Wilde S, Schendel D, Busch DH, Mann M, Protzer U. P64. T cell re-direction against Glypican-3 for immunotherapy of hepatocellular carcinoma. J Immunother Cancer 2014. [PMCID: PMC4072158 DOI: 10.1186/2051-1426-2-s2-p38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Krebs K, Metzger K, Weigand L, Dargel C, Kieback E, Uckert W, Busch D, Krackhardt A, Protzer U. P73. Functional characterisation of HBV-specific T cell receptors for redirection of T cells against HBV infected hepatocytes. J Immunother Cancer 2014. [PMCID: PMC4072197 DOI: 10.1186/2051-1426-2-s2-p47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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12
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Hochheiser LI, Krebs K, Chien R, Hornberger JC. Clinical utility of a 21-gene breast cancer assay: Experience of women enrolled in a large U.S. insurance program. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e16529] [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] Open
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Kraft M, Krebs K, Rutsch W, Boenick U. Softwarekomponenten zur Meßdatenverarbeitung für experimentelle Untersuchungen an PTCA-Kathetern. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1998.43.s1.136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Prayer and Spirituality are now recognized complementary therapies and receiving funding through the National Institutes of Health. More than 130 controlled studies demonstrate that prayer or a prayer-like state of compassion, empathy, and love can bring about measurable healthful changes. Nurses and all health care professionals are in perfect position to help optimize these benefits for their patients. This article suggests practical ways to support patients through challenging times.
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Affiliation(s)
- K Krebs
- Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
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Kraft M, Krebs K, Rutsch W, Boenick U. [Software components for data processing of measurement values in experimental studies with PTCA catheters]. BIOMED ENG-BIOMED TE 1998; 43 Suppl:136-7. [PMID: 9859294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- M Kraft
- Institut für Mikrotechnik und Medizintechnik, Technische Universität Berlin
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Mollenhauer I, Krebs K, Kranz C, Boenick U. [Methods for studying wear and parameters influencing wear characteristics of material combinations for hip endoprostheses]. BIOMED ENG-BIOMED TE 1998; 42 Suppl:277-8. [PMID: 9517150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- I Mollenhauer
- Institut für Mikrotechnik und Medizintechnik, Technische Universität Berlin
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Mollenhauer I, Krebs K, Kranz C, Boenick U. Verschleißuntersuchungs-Methoden sowie Einflußparameter auf die Verschleißeigenschaften von Materialpaarungen für Hüftendoprothesen. BIOMED ENG-BIOMED TE 1997. [DOI: 10.1515/bmte.1997.42.s2.277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
In 13 healthy women and 6 virgins the cellular sensitization against sperm and seminal plasma antigens was demonstrated by an indirect lymphokin assay, the leucocyte migration inhibition test (LMI-test) using the following preparations: "washed" spermatozoa, seminal plasma and spermatozoa of the supernatant prepared with the "swim-up" technique. In both groups of women a cellular sensitization against sperm and seminal plasma antigens could be observed. Further, a dose dependent correlation was found in that way, that increasing concentrations of spermatozoa lead to an increased inhibition of macrophage migration. In virgins cellular sensitization against seminal plasma proteins did not differ from non-virgins, only the percentage of significant reactions in the LMI-Test was reduced. As low sperm concentrations (1 million ml-1), which represent best the physiological situation in the uterus, induced an enhanced migrations of macrophages the enhancement of macrophage migration is considered as physiological cellular sensitization of females against sperm-associated antigens.
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Affiliation(s)
- P Mallmann
- Department of Gynecology and Obstetrics, Bonn, Germany
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Stone CL, Krebs K. The use of utilization review nurses to decrease reimbursement denials. Home Healthc Nurse 1990; 8:13-7. [PMID: 2376516 DOI: 10.1097/00004045-199005000-00004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Since the implementation of HCFA forms 484, 486, and 487, the home health industry has experienced a dramatic increase in the rate of reimbursement denials. One agency responded by developing a utilization review program that has successfully reduced technical and medical denials.
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Cioè L, Laurila P, Meo P, Krebs K, Goodman S, Curtis PJ. Cloning and nucleotide sequence of a mouse erythrocyte beta-spectrin cDNA. Blood 1987; 70:915-20. [PMID: 3307952] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A rabbit monospecific antibody for mouse beta-spectrin was used to screen a mouse anemic spleen cDNA expression library. A mouse beta-spectrin cDNA clone was isolated and identified by its ability to make mouse beta-spectrin-like antigens in Escherichia coli. This clone was used to probe total RNA from various mouse tissues. Anemic spleen RNA showed two strongly hybridizing RNA species of approximately 6 and 8 kb. Two very faintly hybridizing bands of about 6 kb and 10 kb could also be seen in total mouse brain RNA. All of these bands could be detected after hybridization under both stringent and nonstringent conditions. This suggests that erythroid beta-spectrin may also be expressed in the brain. No bands could be detected in kidney, liver, or spleen RNA. Southern blot analysis of mouse genomic DNA showed a single hybridizing band after digestion with several restriction endonucleases even under nonstringent conditions. Nucleotide sequencing of the cDNA insert revealed almost complete identity between the N-terminus of the deduced amino acid sequence of the cDNA clone and the C-terminal 15 amino acids of a peptide derived from the beta-8 repeat unit of human erythrocyte beta-spectrin. The deduced amino acid sequence contained most of the conserved amino acids characteristic of the 106 amino acid repeat unit first found in human alpha-spectrin and thus provides the first evidence for a complete 106 amino acid repeat unit structure in beta-spectrin.
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Affiliation(s)
- L Cioè
- Institute of Virology, University La Sapienza, Rome, Italy
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Brindsden G, Gordon T, Epstein H, Krebs K, Vitek R, Morganelli J. An evaluation of a pilot interdisciplinary, individualized instruction program. Northwestern University Dental School. CDS Rev 1981; 74:32-3. [PMID: 6941857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Krebs K, Kauther KD, Stoldt H. [Proceedings: In vitro fertilization, breeding and reimplantation of rabbit eggs]. Arch Gynakol 1973; 214:118-20. [PMID: 4130933 DOI: 10.1007/bf00671080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Pelah I, Krebs K, Imry Y. Inelastic Neutron Spectra and the Vibrational Modes of the Hydrogen Layer in Alkali and Alkaline‐Earth Hydroxides. J Chem Phys 1965. [DOI: 10.1063/1.1697043] [Citation(s) in RCA: 14] [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: 11/14/2022] Open
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Andreasen AHM, Krebs K, Dalsgaard-Pedersen NA, Camradt-Petersen E, Kjer B. Investigations on the passage of light through suspensions. ACTA ACUST UNITED AC 1950. [DOI: 10.1002/jctb.5000691008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Krebs K. III. Beitrag zur Histologie und zum klinischen Verlaufe der Chorion-Epitheliome. Gynecol Obstet Invest 1900. [DOI: 10.1159/000281550] [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: 11/19/2022]
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