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Schueler J, Kuenzel J, Thuesing A, Pion E, Behncke RY, Haegerling R, Fuchs D, Kraus A, Buchholz B, Huang B, Merhof D, Werner JM, Schmidt KM, Hackl C, Aung T, Haerteis S. Ultra high frequency ultrasound enables real-time visualization of blood supply from chorioallantoic membrane to human autosomal dominant polycystic kidney tissue. Sci Rep 2024; 14:10063. [PMID: 38698187 PMCID: PMC11066115 DOI: 10.1038/s41598-024-60783-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 04/26/2024] [Indexed: 05/05/2024] Open
Abstract
Ultra high frequency (UHF) ultrasound enables the visualization of very small structures that cannot be detected by conventional ultrasound. The utilization of UHF imaging as a new imaging technique for the 3D-in-vivo chorioallantoic membrane (CAM) model can facilitate new insights into tissue perfusion and survival. Therefore, human renal cystic tissue was grafted onto the CAM and examined using UHF ultrasound imaging. Due to the unprecedented resolution of UHF ultrasound, it was possible to visualize microvessels, their development, and the formation of anastomoses. This enabled the observation of anastomoses between human and chicken vessels only 12 h after transplantation. These observations were validated by 3D reconstructions from a light sheet microscopy image stack, indocyanine green angiography, and histological analysis. Contrary to the assumption that the nutrient supply of the human cystic tissue and the gas exchange happens through diffusion from CAM vessels, this study shows that the vasculature of the human cystic tissue is directly connected to the blood vessels of the CAM and perfusion is established within a short period. Therefore, this in-vivo model combined with UHF imaging appears to be the ideal platform for studying the effects of intravenously applied therapeutics to inhibit renal cyst growth.
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Affiliation(s)
- Jan Schueler
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
| | - Jonas Kuenzel
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
| | - Anna Thuesing
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
| | - Eric Pion
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
| | - Rose Yinghan Behncke
- Research Group 'Lymphovascular Medicine and Translational 3D-Histopathology', Institute of Medical and Human Genetics, Charité-Universitätsmedizin Berlin, 13353, Berlin, Germany
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, BIH Center for Regenerative Therapies, 13353, Berlin, Germany
| | - Rene Haegerling
- Research Group 'Lymphovascular Medicine and Translational 3D-Histopathology', Institute of Medical and Human Genetics, Charité-Universitätsmedizin Berlin, 13353, Berlin, Germany
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, BIH Center for Regenerative Therapies, 13353, Berlin, Germany
- Research Group 'Development and Disease', Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, BIH Academy, Clinician Scientist Program, 10117, Berlin, Germany
| | - Dieter Fuchs
- FUJIFILM VisualSonics, Inc., 1114 AB, Amsterdam, The Netherlands
| | - Andre Kraus
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Bjoern Buchholz
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Boqiang Huang
- Institute of Image Analysis and Computer Vision, Faculty of Informatics and Data Science, University of Regensburg, 93053, Regensburg, Germany
| | - Dorit Merhof
- Institute of Image Analysis and Computer Vision, Faculty of Informatics and Data Science, University of Regensburg, 93053, Regensburg, Germany
| | - Jens M Werner
- Department of Surgery, University Hospital Regensburg, 93053, Regensburg, Germany
| | - Katharina M Schmidt
- Department of Surgery, University Hospital Regensburg, 93053, Regensburg, Germany
| | - Christina Hackl
- Department of Surgery, University Hospital Regensburg, 93053, Regensburg, Germany
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469, Deggendorf, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany.
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Zdrada-Nowak J, Stolecka-Warzecha A, Odrzywołek W, Rusztowicz M, Błońska-Fajfrowska B, Wilczyński S. The assessment of moderate acne vulgaris face skin using blood perfusion and hyperspectral imaging-A pilot study. J Cosmet Dermatol 2023; 22:3143-3151. [PMID: 37248648 DOI: 10.1111/jocd.15811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/03/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND Microcirculation is the flow of blood through the smallest vessels in the circulatory system. Capillaries respond to various pathologies much earlier than arteries and veins, the changes which indicate that the disease is already developing. Careful monitoring of the functioning of the capillary system often allows the detection of in vivo disorders at an early stage. AIMS The aim of the study was to evaluate the microcirculation within acne lesions. A noninvasive method of semi-quantitative blood perfusion measurement based on laser speckle contrast analysis (LASCA) and a quantitative assessment of the acne severity using the hyperspectral imaging method supported by image analysis and processing methods were used. PATIENTS/METHOD The acne lesion perfusion was compared to the healthy skin perfusion of the control group. The reflectance in the range from 400 to 1000 nm was also compared for acne lesions and healthy skin. A dedicated version of the algorithm based on the gray-level co-occurrence matrix was used to compare differences between acne lesions and healthy skin. RESULTS Blood perfusion in acne lesions is on average 117% higher than in healthy skin. The reflectance of acne lesions was lower in the range of 400-600 nm compared to the healthy skin. A statistically significant decrease in the reflectance of acne lesions was demonstrated for wavelengths: 434, 549, and 588 nm. CONCLUSIONS Increased blood perfusion in acne lesions compared to healthy skin suggests increased chemotaxis of inflammatory cells and wound healing. Decrease points in skin reflectance resemble the absorption peaks for hemoglobin and coproporphyrin III produced by Cutibacterium acnes. Thus, the proposed methods may serve not only for the early detection of acne lesions, before they manifest themselves clinically for the naked eye, but may also be a tool for quantifying the effectiveness of acne treatment.
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Affiliation(s)
- Julita Zdrada-Nowak
- Department of Basic Biomedical Science, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Anna Stolecka-Warzecha
- Department of Basic Biomedical Science, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Wiktoria Odrzywołek
- Department of Basic Biomedical Science, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Monika Rusztowicz
- Department of Health Sciences, Institute of Health Sciences, University of Opole, Opole, Poland
| | - Barbara Błońska-Fajfrowska
- Department of Basic Biomedical Science, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Sławomir Wilczyński
- Department of Basic Biomedical Science, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland
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Alexeree SM, Youssef D, Abdel-Harith M. Using biospeckle and LIBS techniques with artificial intelligence to monitor phthalocyanine-gold nanoconjugates as a new drug delivery mediator for in vivo PDT. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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Oliinyk D, Eigenberger A, Felthaus O, Haerteis S, Prantl L. Chorioallantoic Membrane Assay at the Cross-Roads of Adipose-Tissue-Derived Stem Cell Research. Cells 2023; 12:cells12040592. [PMID: 36831259 PMCID: PMC9953848 DOI: 10.3390/cells12040592] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
With a history of more than 100 years of different applications in various scientific fields, the chicken chorioallantoic membrane (CAM) assay has proven itself to be an exceptional scientific model that meets the requirements of the replacement, reduction, and refinement principle (3R principle). As one of three extraembryonic avian membranes, the CAM is responsible for fetal respiration, metabolism, and protection. The model provides a unique constellation of immunological, vascular, and extracellular properties while being affordable and reliable at the same time. It can be utilized for research purposes in cancer biology, angiogenesis, virology, and toxicology and has recently been used for biochemistry, pharmaceutical research, and stem cell biology. Stem cells and, in particular, mesenchymal stem cells derived from adipose tissue (ADSCs) are emerging subjects for novel therapeutic strategies in the fields of tissue regeneration and personalized medicine. Because of their easy accessibility, differentiation profile, immunomodulatory properties, and cytokine repertoire, ADSCs have already been established for different preclinical applications in the files mentioned above. In this review, we aim to highlight and identify some of the cross-sections for the potential utilization of the CAM model for ADSC studies with a focus on wound healing and tissue engineering, as well as oncological research, e.g., sarcomas. Hereby, the focus lies on the combination of existing evidence and experience of such intersections with a potential utilization of the CAM model for further research on ADSCs.
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Affiliation(s)
- Dmytro Oliinyk
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
- Correspondence:
| | - Andreas Eigenberger
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Oliver Felthaus
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, Faculty for Biology and Preclinical Medicine, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Lukas Prantl
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
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Chen L, Yuan M, Zhang X, Li Y, Feng Y, Yu J, Coudyzer W, Xie Y, Xu J, Li Y, Li Y, Ni Y. Exploration of Chick Embryo and Chorioallantoic Membrane on Imaging Navigated Platforms for Anticancer Pharmaceutical Evaluations. Technol Cancer Res Treat 2023; 22:15330338231206985. [PMID: 37844882 PMCID: PMC10585999 DOI: 10.1177/15330338231206985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/29/2023] [Accepted: 09/25/2023] [Indexed: 10/18/2023] Open
Abstract
Conforming to the current replace-reduce-refine 3Rs' guidelines in animal experiments, a series of explorative efforts have been made to set up operable biomedical imaging-guided platforms for qualitative and quantitative evaluations on pharmacological effects of tumor vascular-disrupting agents (VDAs), based on the chick embryos (CEs) with its chorioallantoic membrane (CAM), in this overview. The techniques and platforms have been hierarchically elaborated, from macroscopic to microscopic and from overall to specific aspects. A protocol of LED lamplight associated with a new deep-learning algorithm was consolidated to screen out weak CEs by using the CAM vasculature imaging. 3D magnetic resonance imaging (MRI) and laser speckle contrast imaging (LSCI) to monitor the evolution of CE and vascular changes in CAM are introduced. A LSCI-CAM platform for studying the effects of VDAs on normal and cancerous vasculature of CAM and possible molecular mechanisms has been demonstrated. Finally, practical challenges and future perspectives are highlighted. The aim of this article is to help peers in biomedical research to familiarize with the CAM platform and to optimize imaging protocols for the evaluation of vasoactive pharmaceuticals, especially anticancer vascular targeted therapy.
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Affiliation(s)
- Lei Chen
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Mingyuan Yuan
- Department of Radiology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Xinqi Zhang
- Airport Division, Tianjin Cancer Hospital, Tianjin, China
| | - Yongsheng Li
- Airport Division, Tianjin Cancer Hospital, Tianjin, China
| | - Yuanbo Feng
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Jie Yu
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Walter Coudyzer
- Department of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Yiyang Xie
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Jiayue Xu
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yuzhen Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yue Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yicheng Ni
- KU Leuven, Biomedical Group, Leuven, Belgium
- Department of Radiology, Zhongda Hospital, Southeast University, Nanjing, China
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Pion E, Haerteis S, Aung T. Application of Laser Speckle Contrast Imaging (LSCI) for the Angiogenesis Measurement of Tumors in the Chorioallantoic Membrane (CAM) Model. Methods Mol Biol 2023; 2572:141-153. [PMID: 36161414 DOI: 10.1007/978-1-0716-2703-7_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Tumor angiogenesis is one essential aspect for the growth and metastasis of cancer cells, which means that adequate in vivo angiogenesis models are of utmost importance for the investigation of such diseases. The chick chorioallantoic membrane (CAM) model is one established method for this purpose and has already been used for research on multiple cancer types. One important part of the evaluation of tumors grafted onto the CAM is the measurement of tumor-induced angiogenesis. In order to address this central aspect, we utilized the novel PeriCam perfusion speckle imager (PSI) system high resolution (HR) model (Perimed AB, Järfälla, Sweden), which is based on laser speckle contrast imaging (LSCI) for the semiquantitative measurement of blood flow in the CAM model. This method enables a fast and accurate analysis of the angiogenesis of cell line tumors and primary tumors that are grafted onto the CAM. The proposed model can be regarded as a precursor model for personalized cancer therapy.
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Affiliation(s)
- Eric Pion
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany.
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany.
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Pion E, Karnosky J, Boscheck S, Wagner BJ, Schmidt KM, Brunner SM, Schlitt HJ, Aung T, Hackl C, Haerteis S. 3D In Vivo Models for Translational Research on Pancreatic Cancer: The Chorioallantoic Membrane (CAM) Model. Cancers (Basel) 2022; 14:cancers14153733. [PMID: 35954398 PMCID: PMC9367548 DOI: 10.3390/cancers14153733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/21/2022] [Accepted: 07/28/2022] [Indexed: 11/25/2022] Open
Abstract
Simple Summary The 5-year overall survival rate for all stages of pancreatic cancer is relatively low at about only 6%. As a result of this exceedingly poor prognosis, new research models are necessary to investigate this highly malignant cancer. One model that has been used extensively for a vast variety of different cancers is the chorioallantoic membrane (CAM) model. It is based on an exceptionally vascularized membrane that develops within fertilized chicken eggs and can be used for the grafting and analysis of tumor tissue. The aim of the study was to summarize already existing works on pancreatic ductal adenocarcinoma (PDAC) and the CAM model. The results were subdivided into different categories that include drug testing, angiogenesis, personalized medicine, modifications of the model, and further developments to help improve the unfavorable prognosis of this disease. Abstract Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive cancer with adverse outcomes that have barely improved over the last decade. About half of all patients present with metastasis at the time of diagnosis, and the 5-year overall survival rate across all stages is only 6%. Innovative in vivo research models are necessary to combat this cancer and to discover novel treatment strategies. The chorioallantoic membrane (CAM) model represents one 3D in vivo methodology that has been used in a large number of studies on different cancer types for over a century. This model is based on a membrane formed within fertilized chicken eggs that contain a dense network of blood vessels. Because of its high cost-efficiency, simplicity, and versatility, the CAM model appears to be a highly valuable research tool in the pursuit of gaining more in-depth insights into PDAC. A summary of the current literature on the usage of the CAM model for the investigation of PDAC was conducted and subdivided into angiogenesis, drug testing, modifications, personalized medicine, and further developments. On this comprehensive basis, further research should be conducted on PDAC in order to improve the abysmal prognosis of this malignant disease.
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Affiliation(s)
- Eric Pion
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.P.); (S.B.); (T.A.)
| | - Julia Karnosky
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Sofie Boscheck
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.P.); (S.B.); (T.A.)
| | - Benedikt J. Wagner
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Katharina M. Schmidt
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Stefan M. Brunner
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Hans J. Schlitt
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.P.); (S.B.); (T.A.)
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
| | - Christina Hackl
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (J.K.); (B.J.W.); (K.M.S.); (S.M.B.); (H.J.S.); (C.H.)
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.P.); (S.B.); (T.A.)
- Correspondence:
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Deep Learning-Based Image Analysis for the Quantification of Tumor-Induced Angiogenesis in the 3D In Vivo Tumor Model—Establishment and Addition to Laser Speckle Contrast Imaging (LSCI). Cells 2022; 11:cells11152321. [PMID: 35954165 PMCID: PMC9367525 DOI: 10.3390/cells11152321] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/17/2022] [Accepted: 07/26/2022] [Indexed: 12/10/2022] Open
Abstract
(1) Background: angiogenesis plays an important role in the growth and metastasis of tumors. We established the CAM assay application, an image analysis software of the IKOSA platform by KML Vision, for the quantification of blood vessels with the in ovo chorioallantoic membrane (CAM) model. We added this proprietary deep learning algorithm to the already established laser speckle contrast imaging (LSCI). (2) Methods: angiosarcoma cell line tumors were grafted onto the CAM. Angiogenesis was measured at the beginning and at the end of tumor growth with both measurement methods. The CAM assay application was trained to enable the recognition of in ovo CAM vessels. Histological stains of the tissue were performed and gluconate, an anti-angiogenic substance, was applied to the tumors. (3) Results: the angiosarcoma cells formed tumors on the CAM that appeared to stay vital and proliferated. An increase in perfusion was observed using both methods. The CAM assay application was successfully established in the in ovo CAM model and anti-angiogenic effects of gluconate were observed. (4) Conclusions: the CAM assay application appears to be a useful method for the quantification of angiogenesis in the CAM model and gluconate could be a potential treatment of angiosarcomas. Both aspects should be evaluated in further research.
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Bichlmayer EM, Mahl L, Hesse L, Pion E, Haller V, Moehwald A, Hackl C, Werner JM, Schlitt HJ, Schwarz S, Kainz P, Brochhausen C, Groeger C, Steger F, Kölbl O, Daniel C, Amann K, Kraus A, Buchholz B, Aung T, Haerteis S. A 3D In Vivo Model for Studying Human Renal Cystic Tissue and Mouse Kidney Slices. Cells 2022; 11:cells11152269. [PMID: 35892566 PMCID: PMC9330914 DOI: 10.3390/cells11152269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/14/2022] [Accepted: 07/19/2022] [Indexed: 11/23/2022] Open
Abstract
(1) Background: Autosomal dominant polycystic kidney disease (ADPKD) is a frequent monogenic disorder that leads to progressive renal cyst growth and renal failure. Strategies to inhibit cyst growth in non-human cyst models have often failed in clinical trials. There is a significant need for models that enable studies of human cyst growth and drug trials. (2) Methods: Renal tissue from ADPKD patients who received a nephrectomy as well as adult mouse kidney slices were cultured on a chorioallantoic membrane (CAM) for one week. The cyst volume was monitored by microscopic and CT-based applications. The weight and angiogenesis were quantified. Morphometric and histological analyses were performed after the removal of the tissues from the CAM. (3) Results: The mouse and human renal tissue mostly remained vital for about one week on the CAM. The growth of cystic tissue was evaluated using microscopic and CT-based volume measurements, which correlated with weight and an increase in angiogenesis, and was accompanied by cyst cell proliferation. (4) Conclusions: The CAM model might bridge the gap between animal studies and clinical trials of human cyst growth, and provide a drug-testing platform for the inhibition of cyst enlargement. Real-time analyses of mouse kidney tissue may provide insights into renal physiology and reduce the need for animal experiments.
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Affiliation(s)
- Eva-Marie Bichlmayer
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Lina Mahl
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Leo Hesse
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Eric Pion
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Victoria Haller
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Andreas Moehwald
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
| | - Christina Hackl
- Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.H.); (J.M.W.); (H.J.S.)
| | - Jens M. Werner
- Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.H.); (J.M.W.); (H.J.S.)
| | - Hans J. Schlitt
- Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.H.); (J.M.W.); (H.J.S.)
| | | | - Philipp Kainz
- KML Vision GmbH, A-8020 Graz, Austria; (S.S.); (P.K.)
| | | | - Christian Groeger
- Department for Radiotherapy, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.G.); (F.S.); (O.K.)
| | - Felix Steger
- Department for Radiotherapy, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.G.); (F.S.); (O.K.)
| | - Oliver Kölbl
- Department for Radiotherapy, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; (C.G.); (F.S.); (O.K.)
| | - Christoph Daniel
- Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (C.D.); (K.A.)
| | - Kerstin Amann
- Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (C.D.); (K.A.)
| | - Andre Kraus
- Department of Nephrology and Hypertension, University Hospital Erlangen, University of Erlangen-Nuremberg, 91054 Erlangen, Germany; (A.K.); (B.B.)
| | - Björn Buchholz
- Department of Nephrology and Hypertension, University Hospital Erlangen, University of Erlangen-Nuremberg, 91054 Erlangen, Germany; (A.K.); (B.B.)
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (E.-M.B.); (L.M.); (L.H.); (E.P.); (V.H.); (A.M.); (T.A.)
- Correspondence:
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Drexler K, Schwertner B, Haerteis S, Aung T, Berneburg M, Geissler EK, Mycielska ME, Haferkamp S. The Role of Citrate Homeostasis in Merkel Cell Carcinoma Pathogenesis. Cancers (Basel) 2022; 14:cancers14143425. [PMID: 35884486 PMCID: PMC9325124 DOI: 10.3390/cancers14143425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Merkel cell carcinoma (MCC) is a rare but highly aggressive skin cancer. Despite important progress, overall understanding of the events that drive MCC carcinogenesis remains incomplete. We discovered that the plasma membrane citrate transporter (pmCiC) is upregulated in Merkel cell carcinoma cell lines. Cancer cells import extracellular citrate via pmCiC to support their metabolism, which is critical to support proliferation and metastatic spread. In this study, we show that inhibition of pmCiC can decrease the growth rate of Merkel cell carcinoma cell lines. Targeting pmCiC and thereby the tumor metabolism should be considered further as a potential anti-cancer therapy. Abstract Merkel cell carcinoma (MCC) is a rare but highly aggressive tumor of the skin with a poor prognosis. The factors driving this cancer must be better understood in order to discover novel targets for more effective therapies. In the search for targets, we followed our interest in citrate as a central and critical metabolite linked to fatty acid synthesis in cancer development. A key to citrate uptake in cancer cells is the high expression of the plasma membrane citrate transporter (pmCiC), which is upregulated in the different adenocarcinoma types tested so far. In this study, we show that the pmCiC is also highly expressed in Merkel cell carcinoma cell lines by western blot and human tissues by immunohistochemistry staining. In the presence of extracellular citrate, MCC cells show an increased proliferation rate in vitro; a specific pmCiC inhibitor (Na+-gluconate) blocks this citrate-induced proliferation. Furthermore, the 3D in vivo Chick Chorioallantoic Membrane (CAM) model showed that the application of Na+-gluconate also decreases Merkel cell carcinoma growth. Based on our results, we conclude that pmCiC and extracellular citrate uptake should be considered further as a potential novel target for the treatment of Merkel cell carcinoma.
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Affiliation(s)
- Konstantin Drexler
- Department of Dermatology, University Medical Center, 93053 Regensburg, Germany; (B.S.); (M.B.); (S.H.)
- Correspondence: ; Tel.: +49-941-944-9603; Fax: +49-941-944-9525
| | - Barbara Schwertner
- Department of Dermatology, University Medical Center, 93053 Regensburg, Germany; (B.S.); (M.B.); (S.H.)
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (S.H.); (T.A.)
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053 Regensburg, Germany; (S.H.); (T.A.)
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
| | - Mark Berneburg
- Department of Dermatology, University Medical Center, 93053 Regensburg, Germany; (B.S.); (M.B.); (S.H.)
| | - Edward K. Geissler
- Department of Surgery, Section of Experimental Surgery, University Hospital Regensburg, 93053 Regensburg, Germany;
| | - Maria E. Mycielska
- Department of Structural Biology, Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany;
| | - Sebastian Haferkamp
- Department of Dermatology, University Medical Center, 93053 Regensburg, Germany; (B.S.); (M.B.); (S.H.)
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11
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Chen L, Wang S, Feng Y, Yu J, Coudyzer W, Van Ongeval C, Geng L, Li Y, Ni Y. Development and characterization of a chick embryo chorioallantoic membrane (CAM) based platform for evaluation of vasoactive medications. Microvasc Res 2022; 142:104372. [PMID: 35483521 DOI: 10.1016/j.mvr.2022.104372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 12/13/2022]
Abstract
Among various anti-cancer therapies, tumor vascular disrupting agents (VDAs) play a crucial role, for which their off-targeting effects on normal vessels need also to be investigated. The purpose of this study was to set up an in-ovo platform that combines a laser speckle contrast imaging (LSCI) modality with chick embryo chorioallantoic membrane (CAM) to real-time monitor vascular diameters and perfusion without and with intravascular injection. Two eggshell windows for both observation or measurement and injection were opened. Dynamic blood perfusion images and corresponding statistic graphs were acquired by using a LSCI unit on CAMs from embryo date (ED) 9 to ED15. A dedicated fine needle catheter was made for slow intravascular administration over 30 min with simultaneous LSCI acquisition. To verify the connectivity between CAM vessels and the embryonic circulations in the egg, contrast-enhanced 3D micro computed tomography (μCT), 2D angiography and histology were executed. This platform was successfully established to acquire, quantify and demonstrate vascular and hemodynamic information from the CAM. Chick embryos even with air cell opened remained alive from ED9 to ED15. Through collecting LSCI derived CAM vascular diameter and perfusion parameters, ED12 was determined as the best time window for vasoactive drug studies. A reverse correlation between CAM vessel diameter and blood perfusion rate was found (p < 0.002). Intravascular infusion and simultaneous LSCI acquisition for 30 min in ovo proved feasible. Contrast-enhanced angiography and histomorphology could characterize the connectivity between CAM vasculature and embryonic circulation. This LSCI-CAM platform was proved effective for investigating the in-ovo hemodynamics, which paves the road for further preclinical research on vasoactive medications including VDAs.
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Affiliation(s)
- Lei Chen
- KU Leuven, Biomedical Group, Campus Gasthuisberg, Leuven 3000, Belgium.
| | - Shuncong Wang
- KU Leuven, Biomedical Group, Campus Gasthuisberg, Leuven 3000, Belgium.
| | - Yuanbo Feng
- KU Leuven, Biomedical Group, Campus Gasthuisberg, Leuven 3000, Belgium.
| | - Jie Yu
- KU Leuven, Biomedical Group, Campus Gasthuisberg, Leuven 3000, Belgium.
| | - Walter Coudyzer
- Department of Radiology, University Hospitals Leuven, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
| | - Chantal Van Ongeval
- Department of Radiology, University Hospitals Leuven, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
| | - Lei Geng
- School of Life Science, TianGong University, Tianjin, China.
| | - Yue Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, China.
| | - Yicheng Ni
- KU Leuven, Biomedical Group, Campus Gasthuisberg, Leuven 3000, Belgium.
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12
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Kohl C, Aung T, Haerteis S, Ignatov A, Ortmann O, Papathemelis T. The 3D in vivo chorioallantoic membrane model and its role in breast cancer research. J Cancer Res Clin Oncol 2022; 148:1033-1043. [PMID: 35122110 DOI: 10.1007/s00432-022-03936-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 01/24/2022] [Indexed: 02/06/2023]
Abstract
PURPOSE We aimed to evaluate the role of the chorioallantoic membrane model (CAM) in breast cancer research. METHODS The following is an overview of the use of the CAM in the field of breast cancer research based on a PubMed literature query. RESULTS The CAM is a 3D in vivo model that can be used for the analysis of tumor growth, biology and angiogenesis of primary tumor tissue or tumor cell lines. The CAM model has been used in breast cancer research for drug testing, migration assays and the evaluation of vascularization, amongst others. The CAM model is a valuable method that offers a better imitation of the physiological phenomena compared to 2D or 3D in vitro models. CONCLUSION The CAM model has primarily and successfully been utilized for the assessment of the tumor biology of established breast cancer cell lines. Further, the CAM model is a promising method to analyze patient derived primary tumor material and could be used as a "patient-specific 3D-tumor-therapy-model" for the cost-efficient evaluation of anti-cancer drugs to find the optimal treatment for breast cancer patients.
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Affiliation(s)
- Cynthia Kohl
- Department of Gynecology and Obstetrics, St. Marien Hospital Amberg, 92224, Amberg, Germany.
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany.,Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469, Deggendorf, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, 93053, Regensburg, Germany
| | - Atanas Ignatov
- Department of Gynecology and Obstetrics, University Hospital Magdeburg, 39120, Magdeburg, Germany
| | - Olaf Ortmann
- Department of Gynecology and Obstetrics, University Medical Center Regensburg, 93053, Regensburg, Germany
| | - Thomas Papathemelis
- Department of Gynecology and Obstetrics, St. Marien Hospital Amberg, 92224, Amberg, Germany
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13
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Fan Z, Shi D, Zuo W, Feng J, Ge D, Su G, Yang L, Hou Z. Trojan-Horse Diameter-Reducible Nanotheranostics for Macroscopic/Microscopic Imaging-Monitored Chemo-Antiangiogenic Therapy. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5033-5052. [PMID: 35045703 DOI: 10.1021/acsami.1c22350] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Although nanotheranostics have displayed striking potential toward precise nanomedicine, their targeting delivery and tumor penetration capacities are still impeded by several biological barriers. Besides, the current antitumor strategies mainly focus on killing tumor cells rather than antiangiogenesis. Enlightened by the fact that the smart transformable self-targeting nanotheranostics can enhance their targeting efficiency, tumor penetration, and cellular uptake, we herein report carrier-free Trojan-horse diameter-reducible metal-organic nanotheranostics by the coordination-driven supramolecular sequential co-assembly of the chemo-drug pemetrexed (PEM), transition-metal ions (FeIII), and antiangiogenesis pseudolaric acid B. Such nanotheranostics with both a high dual-drug payload efficiency and outstanding physiological stability are responsively decomposed into numerous ultra-small-diameter nanotheranostics under stimuli of the moderate acidic tumor microenvironment and then internalized into tumor cells through tumor-receptor-mediated self-targeting, synergistically enhancing tumor penetration and cellular uptake. Besides, such nanotheranostics enable visualization of self-targeting capacity under the macroscopic monitor of computed tomography/magnetic resonance imaging, thereby realizing efficient oncotherapy. Moreover, tumor microvessels are precisely monitored by optical coherence tomography angiography/laser speckle imaging during chemo-antiangiogenic therapy in vivo, visually verifying that such nanotheranostics possess an excellent antiangiogenic effect. Our work will provide a promising strategy for further tumor diagnosis and targeted therapy.
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Affiliation(s)
- Zhongxiong Fan
- Department of biomaterials, College of Materials, The higher educational key laboratory for biomedical engineering of Fujian Province Research center of biomedical engineering of xiamen & Research Center of Biomedical Engineering of Xiamen, Xiamen University, Xiamen 361005, China
| | - Dao Shi
- Department of biomaterials, College of Materials, The higher educational key laboratory for biomedical engineering of Fujian Province Research center of biomedical engineering of xiamen & Research Center of Biomedical Engineering of Xiamen, Xiamen University, Xiamen 361005, China
| | - Wenbao Zuo
- School of Pharmaceutical Science, Xiamen University, Xiamen 361005, China
| | - Juan Feng
- The First People's Hospital Affiliated to Xiamen University, Xiamen 361005, China
| | - Dongtao Ge
- Department of biomaterials, College of Materials, The higher educational key laboratory for biomedical engineering of Fujian Province Research center of biomedical engineering of xiamen & Research Center of Biomedical Engineering of Xiamen, Xiamen University, Xiamen 361005, China
| | - Guanghao Su
- Institute of Pediatric Research, Children's Hospital of Soochow University, 92 Zhongnan Street, Suzhou 215025, China
| | - Lichao Yang
- School of Medicine, Xiamen University, Xiamen 361005, China
| | - Zhenqing Hou
- Department of biomaterials, College of Materials, The higher educational key laboratory for biomedical engineering of Fujian Province Research center of biomedical engineering of xiamen & Research Center of Biomedical Engineering of Xiamen, Xiamen University, Xiamen 361005, China
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14
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Kohl C, Aung T, Haerteis S, Papathemelis T. Assessment of breast cancer primary tumor material in a 3D in vivo model. Clin Hemorheol Microcirc 2021; 79:157-166. [PMID: 34487030 DOI: 10.3233/ch-219113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Breast cancer is the most common malignant tumor in women and highly heterogeneous with a variety of different molecular subtypes. The analysis of the individual tumor biology is necessary to develop a specific and individualized treatment plan for every patient. The chick chorioallantoic membrane (CAM) model, a 3D-in-vivo-tumor-model, could potentially provide a methodology that facilitates the gain of additional information regarding the tumor biology as well as the testing of the tumor's individual sensitivity to different therapies. OBJECTIVE The objective was to establish the grafting of different breast cancer primaries onto the CAM for tumor profiling and the investigation of different parameters. METHODS Breast cancer primary tissue of different patients was grafted onto the CAM. Subsequently, 3D volume and perfusion measurements were performed during the engraftment period. Histological analyses of the tumors were carried out after the engraftment period. RESULTS The grafting of the breast cancer primaries onto the CAM was successful. The tumors remained partially vital and displayed angiogenic development on the CAM. CONCLUSIONS Breast cancer primary material can be grafted onto the CAM and we observed visible and measurable changes of perfusion over time.
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Affiliation(s)
- Cynthia Kohl
- Department of Gynecology and Obstetrics, St. Marien Hospital Amberg, Amberg, Germany
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany.,Center of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
| | - Thomas Papathemelis
- Department of Gynecology and Obstetrics, St. Marien Hospital Amberg, Amberg, Germany
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15
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Drexler K, Schmidt KM, Jordan K, Federlin M, Milenkovic VM, Liebisch G, Artati A, Schmidl C, Madej G, Tokarz J, Cecil A, Jagla W, Haerteis S, Aung T, Wagner C, Kolodziejczyk M, Heinke S, Stanton EH, Schwertner B, Riegel D, Wetzel CH, Buchalla W, Proescholdt M, Klein CA, Berneburg M, Schlitt HJ, Brabletz T, Ziegler C, Parkinson EK, Gaumann A, Geissler EK, Adamski J, Haferkamp S, Mycielska ME. Cancer-associated cells release citrate to support tumour metastatic progression. Life Sci Alliance 2021; 4:e202000903. [PMID: 33758075 PMCID: PMC7994318 DOI: 10.26508/lsa.202000903] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/14/2022] Open
Abstract
Citrate is important for lipid synthesis and epigenetic regulation in addition to ATP production. We have previously reported that cancer cells import extracellular citrate via the pmCiC transporter to support their metabolism. Here, we show for the first time that citrate is supplied to cancer by cancer-associated stroma (CAS) and also that citrate synthesis and release is one of the latter's major metabolic tasks. Citrate release from CAS is controlled by cancer cells through cross-cellular communication. The availability of citrate from CAS regulated the cytokine profile, metabolism and features of cellular invasion. Moreover, citrate released by CAS is involved in inducing cancer progression especially enhancing invasiveness and organ colonisation. In line with the in vitro observations, we show that depriving cancer cells of citrate using gluconate, a specific inhibitor of pmCiC, significantly reduced the growth and metastatic spread of human pancreatic cancer cells in vivo and muted stromal activation and angiogenesis. We conclude that citrate is supplied to tumour cells by CAS and citrate uptake plays a significant role in cancer metastatic progression.
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Affiliation(s)
- Konstantin Drexler
- Department of Dermatology, University Medical Centre, Regensburg, Germany
| | | | - Katrin Jordan
- Department of Surgery, University Medical Center, Regensburg, Germany
| | - Marianne Federlin
- Department of Conservative Dentistry and Periodontology, University Medical Center, Regensburg, Germany
| | - Vladimir M Milenkovic
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Gerhard Liebisch
- Institute of Clinical Chemistry and Laboratory Medicine, Regensburg University Hospital, Regensburg, Germany
| | - Anna Artati
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
| | - Christian Schmidl
- Regensburg Center for Interventional Immunology, Regensburg, Germany
| | - Gregor Madej
- Department of Structural Biology, Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany
| | - Janina Tokarz
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
| | - Alexander Cecil
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
| | - Wolfgang Jagla
- Institute of Pathology, Kaufbeuren-Ravensburg, Kaufbeuren, Germany
| | - Silke Haerteis
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
| | - Thiha Aung
- Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
- Center of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany
| | - Christine Wagner
- Department of Surgery, University Medical Center, Regensburg, Germany
| | | | - Stefanie Heinke
- Department of Surgery, University Medical Center, Regensburg, Germany
| | - Evan H Stanton
- Department of Surgery, University Medical Center, Regensburg, Germany
| | - Barbara Schwertner
- Department of Dermatology, University Medical Centre, Regensburg, Germany
| | - Dania Riegel
- Regensburg Center for Interventional Immunology, Regensburg, Germany
| | - Christian H Wetzel
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Medical Center, Regensburg, Germany
| | - Martin Proescholdt
- Department of Neurosurgery, University Hospital Regensburg, Regensburg, Germany
| | - Christoph A Klein
- Experimental Medicine and Therapy Research, University of Regensburg, Regensburg, Germany
| | - Mark Berneburg
- Department of Dermatology, University Medical Centre, Regensburg, Germany
| | - Hans J Schlitt
- Department of Surgery, University Medical Center, Regensburg, Germany
| | - Thomas Brabletz
- Department of Experimental Medicine 1, Friedrich-Alexander-University Erlangen, Erlangen, Germany
| | - Christine Ziegler
- Department of Structural Biology, Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany
| | - Eric K Parkinson
- Centre for Immunobiology and Regenerative Medicine, Blizard Institute, Barts and The London School of Medicine and Dentistry, London, UK
| | - Andreas Gaumann
- Institute of Pathology, Kaufbeuren-Ravensburg, Kaufbeuren, Germany
| | - Edward K Geissler
- Department of Surgery, University Medical Center, Regensburg, Germany
| | - Jerzy Adamski
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
- Lehrstuhl für Experimentelle Genetik, Technische Universität München, Munich, Germany
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | - Maria E Mycielska
- Department of Surgery, University Medical Center, Regensburg, Germany
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16
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Krüger-Genge A, Tondera C, Hauser S, Braune S, Görs J, Roch T, Klopfleisch R, Neffe AT, Lendlein A, Pietzsch J, Jung F. Immunocompatibility and non-thrombogenicity of gelatin-based hydrogels. Clin Hemorheol Microcirc 2021; 77:335-350. [PMID: 33337355 DOI: 10.3233/ch-201028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Immunocompatibility and non-thrombogenicity are important requirements for biomedical applications such as vascular grafts. Here, gelatin-based hydrogels formed by reaction of porcine gelatin with increasing amounts of lysine diisocyanate ethyl ester were investigated in vitro in this regard. In addition, potential adverse effects of the hydrogels were determined using the "Hen's egg test on chorioallantoic membrane" (HET-CAM) test and a mouse model.The study revealed that the hydrogels were immunocompatible, since complement activation was absent and a substantial induction of reactive oxygen species generating monocytes and neutrophils could not be observed in whole human blood. The density as well as the activation state of adherent thrombocytes was comparable to medical grade polydimethylsiloxane, which was used as reference material. The HET-CAM test confirmed the compatibility of the hydrogels with vessel functionality since no bleedings, thrombotic events, or vessel destructions were observed. Only for the samples synthesized with the highest LDI amount the number of growing blood vessels in the CAM was comparable to controls and significantly higher than for the softer materials. Implantation into mice showed the absence of adverse or toxic effects in spleen, liver, or kidney, and only a mild lymphocytic activation in the form of a follicular hyperplasia in draining lymph nodes (slightly increased after the implantation of the material prepared with the lowest LDI content). These results imply that candidate materials prepared with mid to high amounts of LDI are suitable for the coating of the blood contacting surface of cardiovascular implants.
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Affiliation(s)
- A Krüger-Genge
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany
| | - C Tondera
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,School of Science, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Dresden, Germany
| | - S Hauser
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - S Braune
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany
| | - J Görs
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany
| | - T Roch
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany
| | - R Klopfleisch
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - A T Neffe
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany
| | - A Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - J Pietzsch
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,School of Science, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Dresden, Germany
| | - F Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany
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17
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Peripheral vasoreactivity in acute ischemic stroke with hemiplegia. Sci Rep 2021; 11:8531. [PMID: 33879816 PMCID: PMC8058338 DOI: 10.1038/s41598-021-88050-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 04/07/2021] [Indexed: 11/25/2022] Open
Abstract
The association between vasomotor tone of the peripheral arteries and cerebral hemisphere function has not been established. This study analyzed the peripheral vasoreactivity of patients with acute ischemic stroke and hemiplegia using a modified Raynaud scan, which is a new technology for blood flow measurement. In this retrospective case–control study, we examined patients with unilateral weakness consistent with ischemic lesions who underwent brain magnetic resonance imaging and modified Raynaud scanning within five days from the onset of symptoms. The modified Raynaud scan was used to quantify the radioactivity of the bilateral fingertips during rest and cooling-heating thermal stress conditions and estimate vasoreactivity based on the change in the blood amount per time under rest-thermal stress. The subjects were classified into the preserved and impaired groups based on their degrees of vasomotor reaction. Based on the modified Raynaud scanning, 37 (mean age = 69.1 ± 10.6) and 32 (mean age = 62.6 ± 11.8) subjects were allocated to the preserved and impaired groups, respectively. Binary logistic regression showed that the affected limb edema (odds ratio (OR) 6.15; confidence interval (CI) 1.40–26.97; p = 0.016) and anterior circulation (OR 3.68; CI 1.01–13.48; p = 0.049) were associated with impaired vasoreactivity. The modified Raynaud scans confirmed that central lesions in the anterior circulation with hemiparesis may influence the vasoreactivity of edematous peripheral arteries. These results may inform treatment and rehabilitation for stroke patients with hemiparesis.
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