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Elawa S, Fredriksson I, Steinvall I, Zötterman J, Farnebo S, Tesselaar E. Skin perfusion and oxygen saturation after mastectomy and radiation therapy in breast cancer patients. Breast 2024; 75:103704. [PMID: 38460441 PMCID: PMC10943105 DOI: 10.1016/j.breast.2024.103704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/11/2024] Open
Abstract
The pathophysiological mechanism behind complications associated with postmastectomy radiotherapy (PMRT) and subsequent implant-based breast reconstruction are not completely understood. The aim of this study was to examine if there is a relationship between PMRT and microvascular perfusion and saturation in the skin after mastectomy and assess if there is impaired responsiveness to a topically applied vasodilator (Methyl nicotinate - MN). Skin microvascular perfusion and oxygenation >2 years after PMRT were measured using white light diffuse reflectance spectroscopy (DRS) and laser Doppler flowmetry (LDF) in the irradiated chest wall of 31 women with the contralateral breast as a control. In the non-irradiated breast, the perfusion after application of MN (median 0.84, 25th-75th centile 0.59-1.02 % RBC × mm/s) was higher compared to the irradiated chest wall (median 0.51, 25th-75th centile 0.21-0.68 % RBC × mm/s, p < 0.001). The same phenomenon was noted for saturation (median 91 %, 25th-75th centile 89-94 % compared to 89 % 25th-75th centile 77-93 %, p = 0.001). Eight of the women (26%) had a ≥10 % difference in skin oxygenation between the non-irradiated breast and the irradiated chest wall. These results indicate that late microvascular changes caused by radiotherapy of the chest wall significantly affect skin perfusion and oxygenation.
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Affiliation(s)
- Sherif Elawa
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden.
| | - Ingemar Fredriksson
- Department of Biomedical Engineering, Linköping University, Linköping, Sweden; Perimed AB, Järfälla, Stockholm, Sweden
| | - Ingrid Steinvall
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden
| | - Johan Zötterman
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden
| | - Simon Farnebo
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden
| | - Erik Tesselaar
- Department of Medical Radiation Physics, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
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2
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Mayr A, Ciper N, Wahl G, Wildenhof J, Frede S, Kirschneck C, Jäger A, Götz W, Beisel-Memmert S. Longitudinal analysis of microcirculatory parameters in gingival tissues after tooth extraction in patients with different risk profiles for wound healing disorders - a pilot study. Clin Oral Investig 2024; 28:303. [PMID: 38714559 PMCID: PMC11076346 DOI: 10.1007/s00784-024-05686-3] [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: 02/08/2024] [Accepted: 04/24/2024] [Indexed: 05/10/2024]
Abstract
OBJECTIVES We aimed to establish a risk profile for intraoral wound healing disorders based on measurements of microcirculation in gingival tissues. MATERIALS AND METHODS Oxygen saturation (SO2) and blood flow in gingival tissues were measured with tissue spectrometry and laser doppler spectroscopy in 37 patients before/after tooth extractions. Patients were assigned to four groups: anamnestically and periodontally healthy patients (n = 7), anamnestically healthy but suffering from periodontitis (n = 10), anamnestically healthy but smoking and suffering from periodontitis (n = 10) and suffering from diabetes and periodontitis (n = 10). Measurements were performed at three different time points: Baseline measurement (T0), one day post extractionem (p.e.) (T1) and seven days p.e. (T2). RESULTS Baseline SO2 values were higher in control patients (p = .038). This effect was most evident in comparison to smokers suffering from periodontitis (p = .042), followed by diabetics suffering from periodontitis (p = .09). An opposite trend was seen for blood flow. Patients suffering from periodontitis demonstrated higher blood flow values (p = .012). Five patients, which belonged to the group of smokers suffering from periodontitis, showed clinically a delayed wound healing. CONCLUSION Differences in SO2 and blood flow of gingival tissue could be detected in different groups of patients with existing periodontitis compared to control patients. CLINICAL RELEVANCE Lower baseline SO2 values could be a warning signal for possible wound healing disorders after oral surgery.
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Affiliation(s)
- Alexandra Mayr
- Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Nadja Ciper
- Center for Dental, Oral and Maxillofacial Medicine, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Gerhard Wahl
- Center for Dental, Oral and Maxillofacial Medicine, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Jan Wildenhof
- Private Clinic Schloss Schellenstein, Olsberg, Germany
| | - Stilla Frede
- Department of Anaesthesiology, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Andreas Jäger
- Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Werner Götz
- Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Svenja Beisel-Memmert
- Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany.
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3
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Montminy T, Oppenheimer NE, Cocco D. Management of irradiated post-mastectomy wound dehiscence with synthetic electrospun fiber matrix: a case report. Front Oncol 2024; 14:1371122. [PMID: 38699633 PMCID: PMC11063235 DOI: 10.3389/fonc.2024.1371122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/03/2024] [Indexed: 05/05/2024] Open
Abstract
Breast-conserving surgery (BCS) is a well-established standard treatment option alternative to mastectomy for patients with early breast cancer that consists of a lumpectomy followed by adjuvant radiotherapy. However, irradiated tissues are at an increased risk of wound healing complications when post-treatment surgical management is required. The management of an irradiated wound dehiscence can be challenging, as it often requires a multimodal treatment approach that includes more invasive interventions when compared to a traditional surgical wound dehiscence. We present a 64 year old female patient with a remote history of right BCS with radiation therapy for early breast cancer 12 years ago, who recently required a simple mastectomy due to ipsilateral breast cancer recurrence. The post-operative course was complicated by dehiscence of the mastectomy wound. After standard wound care therapies failed, her surgical wound successfully healed after treatment with a synthetic electrospun fiber matrix application. Patients with additional comorbidities often do not qualify for invasive reconstructive options; therefore, effective local management options are warranted. This is the first reported case documenting synthetic electrospun fiber matrix efficacy and safety in healing a dehisced surgical wound within a previously irradiated fibrotic area, without the need for further invasive surgical intervention. Larger scale research, such as a prospective cohort study or randomized control trial, is needed to investigate its novel use in irradiated wounds.
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Affiliation(s)
- Tess Montminy
- Creighton University School of Medicine Phoenix, Phoenix, AZ, United States
| | | | - Daniela Cocco
- Creighton University School of Medicine Phoenix, Phoenix, AZ, United States
- Department of Surgery, Valleywise Health Medical Center, Phoenix, AZ, United States
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Stocker M, Blancke Soares A, Liebsch G, Meier RJ, Canis M, Gires O, Haubner F. Quantification of oxygen consumption in head and neck cancer using fluorescent sensor foil technology. Front Oncol 2024; 14:1002798. [PMID: 38390268 PMCID: PMC10882065 DOI: 10.3389/fonc.2024.1002798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
Introduction Head and neck squamous cell carcinoma (HNSCC) patients suffer from frequent local recurrences that negatively impact on prognosis. Hence, distinguishing tumor and normal tissue is of clinical importance as it may improve the detection of residual tumor tissue in surgical resection margins and during imaging-based surgery planning. Differences in O2 consumption (OC) can be used to this aim, as they provide options for improved surgical, image-guided approaches. Methods In the present study, the potential of a fluorescent sensor foil-based technology to quantify OC in HNSCC was evaluated in an in vitro 3D model and in situ in patients. Results In vitro measurements of OC using hypopharyngeal and esophageal cell lines allowed a specific detection of tumor cell spheroids embedded together with cancer-associated fibroblasts in type I collagen extracellular matrix down to a diameter of 440 µm. Pre-surgery in situ measurements were conducted with a handheld recording device and sensor foils with an oxygen permeable membrane and immobilized O2-reactive fluorescent dyes. Lateral tongue carcinoma and carcinoma of the floor of the mouth were chosen for analysis owing to their facilitated accessibility. OC was evaluated over a time span of 60 seconds and was significantly higher in tumor tissue compared to healthy mucosa in the vicinity of the tumor. Discussion Hence, OC quantification using fluorescent sensor foil-based technology is a relevant parameter for the differentiation of tumor tissue of the head and neck region and may support surgery planning.
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Affiliation(s)
- Magdalena Stocker
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Alexandra Blancke Soares
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Gregor Liebsch
- PreSens Precision Sensing GmbH, Imaging Solutions, Regensburg, Germany
| | - Robert J Meier
- PreSens Precision Sensing GmbH, Imaging Solutions, Regensburg, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Olivier Gires
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
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Li B, Zhang J, Ma N, Li W, You G, Chen G, Zhao L, Wang Q, Zhou H. PEG-conjugated bovine haemoglobin enhances efficiency of chemotherapeutic agent doxorubicin with alleviating DOX-induced splenocardiac toxicity in the breast cancer. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2023; 51:120-130. [PMID: 36905212 DOI: 10.1080/21691401.2023.2176865] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Doxorubicin (DOX) is an effective chemotherapeutic agent widely used for cancer treatment. However, hypoxia in tumour tissue and obvious adverse effects particularly cardiotoxicity restricts the clinical usage of DOX. Our study is based on the co-administration of haemoglobin-based oxygen carriers (HBOCs) and DOX in a breast cancer model to investigate HBOCs' ability to enhance chemotherapeutic effectiveness and its capabilities to alleviate the side effects induced by DOX. In an in-vitro study, the results suggested the cytotoxicity of DOX was significantly improved when combined with HBOCs in a hypoxic environment, and produced more γ-H2AX indicating higher DNA damage than free DOX did. Compared with administration of free DOX, combined therapy exhibited a stronger tumour suppressive effect in an in-vivo study. Further mechanism studies showed that the expression of various proteins such as hypoxia-inducible factor-1α (HIF-1α), CD31, CD34, and vascular endothelial growth factor (VEGF) in tumour tissues was also significantly reduced in the combined treatment group. In addition, HBOCs can significantly reduce the splenocardiac toxicity induced by DOX, according to the results of the haematoxylin and eosin (H&E) staining and histological investigation. This study suggested that PEG-conjugated bovine haemoglobin may not only reduce the hypoxia in tumours and increase the efficiency of chemotherapeutic agent DOX, but also alleviate the irreversible heart toxicity caused by DOX-inducted splenocardiac dysregulation.
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Affiliation(s)
- Bingting Li
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Jun Zhang
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China.,The Western Theater General Hospital, Chengdu, P. R. China
| | - Ning Ma
- Clinical Laboratory of Beijing Huairou Hospital, Beijing, P. R. China
| | - Weidan Li
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Guoxing You
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Gan Chen
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Lian Zhao
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Quan Wang
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Hong Zhou
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
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Marks HL, Cook K, Roussakis E, Cascales JP, Korunes‐Miller JT, Grinstaff MW, Evans CL. Quantitative Luminescence Photography of a Swellable Hydrogel Dressing with a Traffic-Light Response to Oxygen. Adv Healthc Mater 2022; 11:e2101605. [PMID: 35120400 DOI: 10.1002/adhm.202101605] [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: 08/09/2021] [Revised: 12/24/2021] [Indexed: 12/19/2022]
Abstract
Sensor-integrated wound dressings are emerging tools applicable to a wide variety of medical applications from emergency triage to at-home monitoring. Uncomfortable, unnecessary wound dressing changes may be avoided by providing quantitative insight into tissue characteristics related to wound healing such as tissue oxygenation, pH, and exudate/transudate volume. Here, a simple cost-effective methodology for quantifying oxygen and pH in a swellable hydrogel dressing using a single photograph is presented. The red and green luminescence of a novel dendritic polyamine Pt-porphyrin and fluorescein conjugate quantitatively responds to oxygen and pH, respectively, and enables robust sensing. The porphyrin conjugate, when combined with a four-arm star polyethylene glycol (PEG) amine polymer, rapidly crosslinks at room temperature with an N-hydroxysuccinimide (NHS)-PEG crosslinker to form a color-changing hydrogel dressing with tunable swelling capabilities applicable to a variety of wound environments. An inexpensive digital single-lens reflex (DSLR) camera modified with bandpass filters captures the hydrogel luminescence using simple macroscopic photography, and conversion to HSB colorspace allows for intensity-independent image analysis of the hydrogels' dual modality response. The hydrogel formulation exhibits a robust and validated visible red-orange-green "traffic light" spectrum in response to oxygen changes, regardless of swelling state, pH, or autofluorescence from skin, thereby enabling the clinician friendly naked-eye feedback.
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Affiliation(s)
- Haley L. Marks
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA 02129 USA
| | - Katherine Cook
- Department of Chemistry Boston University Boston MA 02215 USA
| | - Emmanuel Roussakis
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA 02129 USA
| | - Juan Pedro Cascales
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA 02129 USA
| | | | - Mark W. Grinstaff
- Department of Chemistry Boston University Boston MA 02215 USA
- Department of Biomedical Engineering Boston University Boston MA 02215 USA
| | - Conor L. Evans
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA 02129 USA
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8
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Abstract
Wound care is a multidisciplinary field with significant economic burden to our healthcare system. Not only does wound care cost the US healthcare system $20 billion annually, but wounds also remarkably impact the quality of life of patients; wounds pose significant risk of mortality, as the five-year mortality rate for diabetic foot ulcers (DFUs) and ischemic ulcers is notably higher compared to commonly encountered cancers such as breast and prostate. Although it is important to measure how wounds may or may not be improving over time, the only relative "marker" for this is wound area measurement-area measurements can help providers determine if a wound is on a healing or non-healing trajectory. Because wound area measurements are currently the only readily available "gold standard" for predicting healing outcomes, there is a pressing need to understand how other relative biomarkers may play a role in wound healing. Currently, wound care centers across the nation employ various techniques to obtain wound area measurements; length and width of a wound can be measured with a ruler, but this carries a high amount of inter- and intrapersonal error as well as uncertainty. Acetate tracings could be used to limit the amount of error but do not account for depth, thereby making them inaccurate. Here, we discuss current imaging modalities and how they can serve to accurately measure wound size and serve as useful adjuncts in wound assessment. Moreover, new imaging modalities are also discussed and how up-and-coming technologies can provide important information on "biomarkers" for wound healing.
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9
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Blancke Soares A, Meier R, Liebsch G, Schwenk-Zieger S, Kirmaier ME, Theurich S, Widmann M, Canis M, Gires O, Haubner F. High-resolution spatiotemporal pH e and pO 2 imaging in head and neck and oesophageal carcinoma cells. Cancer Metab 2021; 9:21. [PMID: 33947450 PMCID: PMC8097870 DOI: 10.1186/s40170-021-00257-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 04/07/2021] [Indexed: 12/04/2022] Open
Abstract
Background pO2 and pH are physiological parameters relevant for different processes in health and disease, including wound healing and cancer progression. Head and neck squamous cell carcinomas (HNSCC) and oesophageal squamous cell carcinomas (ESCC) have a high rate of local recurrence that is partly related to treatment-resistant residual tumour cells. Hence, novel diagnostic tools are required to visualise potential residual tumour cells and thereby improve treatment outcome for HNSCC and ESCC patients. We developed a device to spatiotemporally measure oxygen consumption rates (OCR) and extracellular acidification rates (ECAR) to distinguish HNSCC and ESCC cells from healthy cells in vitro, exploiting general metabolic differences between cancer cells and healthy cells. Methods OCR and ECAR were measured via a newly developed device named STO2p-Q (SpatioTemporal O2 and pH Quantification) using the VisiSens technology based on ratiometric fluorescence imaging, facilitating spatiotemporal resolution. Results were confirmed using extracellular flux analyses (Seahorse technology). Results STO2p-Q is described and used to measure OCR and ECAR in HNSCC and ESCC cell lines and normal fibroblast and epithelial cells as components of the tumour microenvironment. OCR measurements showed differences amongst HNSCC and ESCC cell lines and between HNSCC/ESCC and normal cells, which on average had lower OCR than HNSCC/ESCC cells. Both OCR and ECAR measurements were independently verified using the Seahorse technology. Additionally, using STO2p-Q, HNSCC/ESCC, and normal cells could be spatially resolved with a resolution in the low millimetre range. Conclusions We developed a method to spatiotemporally measure OCR and ECAR of cells, which has many potential in vitro applications and lays the foundation for the development of novel diagnostic tools for the detection of cancerous tissue in HNSCC and ESCC patients in vivo. Supplementary Information The online version contains supplementary material available at 10.1186/s40170-021-00257-6.
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Affiliation(s)
- Alexandra Blancke Soares
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Robert Meier
- PreSens Precision Sensing GmbH, Am Biopark 11, 93053, Regensburg, Germany
| | - Gregor Liebsch
- PreSens Precision Sensing GmbH, Am Biopark 11, 93053, Regensburg, Germany
| | - Sabina Schwenk-Zieger
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Martin E Kirmaier
- Department of Medicine III, LMU University Hospital, Ludwig Maximilians University Munich, 81377, Munich, Germany.,Cancer and Immunometabolism Research Group, Gene Center LMU, Ludwig Maximilians University Munich, 81377, Munich, Germany
| | - Sebastian Theurich
- Department of Medicine III, LMU University Hospital, Ludwig Maximilians University Munich, 81377, Munich, Germany.,Cancer and Immunometabolism Research Group, Gene Center LMU, Ludwig Maximilians University Munich, 81377, Munich, Germany
| | - Magdalena Widmann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Olivier Gires
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,Clinical Cooperation Group "Personalized Radiotherapy in Head and Neck Cancer", Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, 85764, Neuherberg, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Taeger CD, Wallner S, Martini T, Schiltz D, Kehrer A, Prantl L, Biermann N. Analysis of Rinsing Fluid during Negative Pressure Wound Therapy with Instillation: A Potential Monitoring Tool in Acute and Chronic Wound Treatment. A Pilot Study. Cells 2021; 10:cells10040732. [PMID: 33810232 PMCID: PMC8065450 DOI: 10.3390/cells10040732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
Background: During negative pressure wound therapy (NPWT), open wounds are draped with a nontransparent sponge, making daily wound evaluation impossible. Sometimes, late or undetected bacterial infections and postoperative bleeding result in repetitive surgery, thus prolonging inpatient time. With the introduction of additional fluid instillation (NPWTi), the wound surface is rinsed, and bacteria, proteins and biomarkers are flushed into a collecting canister, which is later discarded. Methods: The aim of this pilot study was to analyze rinsing fluid samples (0.9% sodium chloride) from the NPWTi device in patients with acute and chronic wounds. In 31 consecutive patients a standardized laboratory analysis was performed to evaluate cellular composition and potassium, phosphate, lactate dehydrooxygenase, pH and total protein levels. Results: While there was an increase in the total cellular amount and the number of polymorphonuclear cells, the number of red blood cells (RBC) decreased after surgery. Potassium and pH showed no significant changes in the first three postoperative days, whereas total protein showed an undulant and partially significant course. Conclusion: We were able to quantify cellular metabolites by analyzing the rinsing fluid of NPWTi. We propose the analysis of this material as a novel and potentially promising tool to monitor wound status without removal of the dressing. The establishment of reference values might help to improve the NPWTi therapy.
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Affiliation(s)
- Christian D. Taeger
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
- Correspondence: ; Tel.: +49-941-944-6763
| | - Stefan Wallner
- Institute for Clinical Chemistry, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany;
| | - Teresa Martini
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
| | - Daniel Schiltz
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
| | - Andreas Kehrer
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
| | - Lukas Prantl
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
| | - Niklas Biermann
- Center of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (T.M.); (D.S.); (A.K.); (L.P.); (N.B.)
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11
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Fang Z, Chen P, Tang S, Chen A, Zhang C, Peng G, Li M, Chen X. Will mesenchymal stem cells be future directions for treating radiation-induced skin injury? Stem Cell Res Ther 2021; 12:179. [PMID: 33712078 PMCID: PMC7952822 DOI: 10.1186/s13287-021-02261-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/01/2021] [Indexed: 01/09/2023] Open
Abstract
Radiation-induced skin injury (RISI) is one of the common serious side effects of radiotherapy (RT) for patients with malignant tumors. Mesenchymal stem cells (MSCs) are applied to RISI repair in some clinical cases series except some traditional options. Though direct replacement of damaged cells may be achieved through differentiation capacity of MSCs, more recent data indicate that various cytokines and chemokines secreted by MSCs are involved in synergetic therapy of RISI by anti-inflammatory, immunomodulation, antioxidant, revascularization, and anti-apoptotic activity. In this paper, we not only discussed different sources of MSCs on the treatment of RISI both in preclinical studies and clinical trials, but also summarized the applications and mechanisms of MSCs in other related regenerative fields.
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Affiliation(s)
- Zhuoqun Fang
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Penghong Chen
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Shijie Tang
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Aizhen Chen
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Chaoyu Zhang
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Guohao Peng
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Ming Li
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China
| | - Xiaosong Chen
- Department of Plastic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, People's Republic of China.
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12
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Chen Y, Chen N, Feng X. The role of internal and external stimuli in the rational design of skin-specific drug delivery systems. Int J Pharm 2021; 592:120081. [PMID: 33189810 DOI: 10.1016/j.ijpharm.2020.120081] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/15/2020] [Accepted: 11/08/2020] [Indexed: 12/12/2022]
Abstract
The concept of skin-specific drug delivery with a spatio-temporal control has just recently received concerns in dermatology. Inspired by the progress in smart materials and their perspective application in medicine science, development of stimuli responsive drug delivery systems with skin-specificity has become possible, which has led to a new era in the localized treatment of skin diseases. This review highlights both the internal and external stimuli that have been employed in this field, with a focus on their implication on the rational design of pharmaceutical formulations, especially those nanoscale drug carriers that are able to provide release of payloads with a precise spatio-temporal control in response to specific stimuli. Also, the strategy of dual stimuli responsive drug delivery systems will be discussed for further improvement of the efficacy of skin drug delivery. The prominent examples of the established approaches are described as comprehensive and current as possible. The review is expected to provide some inspiration for utilizing different stimuli for realizing the site-specific and on-demand drug delivery to the skin.
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Affiliation(s)
- Yang Chen
- Department of Pharmaceutics, School of Pharmacy, China Medical University, Shenyang, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, China.
| | - Naiying Chen
- Department of Pharmaceutics, School of Pharmacy, China Medical University, Shenyang, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Xun Feng
- Department of Sanitary Inspection, School of Public Health, Shenyang Medical College, No.146 Yellow River North Street, Shenyang 110034, China
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13
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Le Guern F, Mussard V, Gaucher A, Rottman M, Prim D. Fluorescein Derivatives as Fluorescent Probes for pH Monitoring along Recent Biological Applications. Int J Mol Sci 2020; 21:E9217. [PMID: 33287208 PMCID: PMC7729466 DOI: 10.3390/ijms21239217] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022] Open
Abstract
Potential of hydrogen (pH) is one of the most relevant parameters characterizing aqueous solutions. In biology, pH is intrinsically linked to cellular life since all metabolic pathways are implicated into ionic flows. In that way, determination of local pH offers a unique and major opportunity to increase our understanding of biological systems. Whereas the most common technique to obtain these data in analytical chemistry is to directly measure potential between two electrodes, in biological systems, this information has to be recovered in-situ without any physical interaction. Based on their non-invasive optical properties, fluorescent pH-sensitive probe are pertinent tools to develop. One of the most notorious pH-sensitive probes is fluorescein. In addition to excellent photophysical properties, this fluorophore presents a pH-sensitivity around neutral and physiologic domains. This review intends to shed new light on the recent use of fluorescein as pH-sensitive probes for biological applications, including targeted probes for specific imaging, flexible monitoring of bacterial growth, and biomedical applications.
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Affiliation(s)
- Florent Le Guern
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Vanessa Mussard
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Anne Gaucher
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Martin Rottman
- Faculté de Médecine Simone Veil, Université de Versailles St Quentin, INSERM UMR U1173, 2 Avenue de la Source de la Bièvre, 78180 Montigny le Bretonneux, France;
- Hôpital Raymond Poincaré, AP-HP, GHU Paris Saclay, 104 Bd Poincaré, 92380 Garches, France
| | - Damien Prim
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
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14
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Marks H, Bucknor A, Roussakis E, Nowell N, Kamali P, Cascales JP, Kazei D, Lin SJ, Evans CL. A paintable phosphorescent bandage for postoperative tissue oxygen assessment in DIEP flap reconstruction. SCIENCE ADVANCES 2020; 6:eabd1061. [PMID: 33355131 PMCID: PMC11206211 DOI: 10.1126/sciadv.abd1061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Flaps are common in plastic surgery to reconstruct large tissue defects in cases such as trauma or cancer. However, most tissue oximeters used for monitoring ischemia in postoperative flaps are bulky, wired devices, which hinder direct flap observation. Here, we present the results of a clinical trial using a previously untried paintable transparent phosphorescent bandage to assess the tissue's partial pressure of oxygen (pO2). Statistical analysis revealed a strong relationship (P < 0.0001) between the rates of change of tissue oxygenation measured by the bandage and blood oxygen saturation (%stO2) readings from a standard-of-care ViOptix near-infrared spectroscopy oximeter. In addition, the oxygen-sensing bandage showed no adverse effects, proved easy handling, and yielded bright images across all skin tones with a digital single-lens reflex (DSLR) camera. This demonstrates the feasibility of using phosphorescent materials to monitor flaps postoperatively and lays the groundwork for future exploration in other tissue oxygen sensing applications.
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Affiliation(s)
- Haley Marks
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Alexandra Bucknor
- Division of Plastic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Emmanuel Roussakis
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Nicholas Nowell
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Parisa Kamali
- Division of Plastic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Juan Pedro Cascales
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Darya Kazei
- Division of Plastic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Samuel J Lin
- Division of Plastic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
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15
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Steinegger A, Wolfbeis OS, Borisov SM. Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications. Chem Rev 2020; 120:12357-12489. [PMID: 33147405 PMCID: PMC7705895 DOI: 10.1021/acs.chemrev.0c00451] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 12/13/2022]
Abstract
This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and pKa values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.
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Affiliation(s)
- Andreas Steinegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Otto S. Wolfbeis
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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