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Loskutova K, Torras M, Zhao Y, Svagan AJ, Grishenkov D. Cellulose Nanofiber-Coated Perfluoropentane Droplets: Fabrication and Biocompatibility Study. Int J Nanomedicine 2023; 18:1835-1847. [PMID: 37051314 PMCID: PMC10085006 DOI: 10.2147/ijn.s397626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 03/10/2023] [Indexed: 04/14/2023] Open
Abstract
Purpose To study the effect of cellulose nanofiber (CNF)-shelled perfluoropentane (PFP) droplets on the cell viability of 4T1 breast cancer cells with or without the addition of non-encapsulated paclitaxel. Methods The CNF-shelled PFP droplets were produced by mixing a CNF suspension and PFP using a homogenizer. The volume size distribution and concentration of CNF-shelled PFP droplets were estimated from images taken with an optical microscope and analyzed using Fiji software and an in-house Matlab script. The thermal stability was qualitatively assessed by comparing the size distribution and concentration of CNF-shelled PFP droplets at room temperature (~22°) and 37°C. The cell viability of 4T1 cells was measured using a 3-[4,5-dimethylthiazol-2yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Additionally, a hemolysis assay was performed to assess blood compatibility of CNF-shelled PFP droplets. Results The droplet diameter and concentration of CNF-shelled PFP droplets decreased after 48 hours at both room temperature and 37°C. In addition, the decrease in concentration was more significant at 37°C, from 3.50 ± 0.64×106 droplets/mL to 1.94 ± 0.10×106 droplets/mL, than at room temperature, from 3.65 ± 0.29×106 droplets/mL to 2.56 ± 0.22×106 droplets/mL. The 4T1 cell viability decreased with increased exposure time and concentration of paclitaxel, but it was not affected by the presence of CNF-shelled PFP droplets. No hemolysis was observed at any concentration of CNF-shelled PFP droplets. Conclusion CNF-shelled PFP droplets have the potential to be applied as drug carriers in ultrasound-mediated therapy.
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Affiliation(s)
- Ksenia Loskutova
- Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, SE-141 57, Sweden
- Correspondence: Ksenia Loskutova, Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Hälsovägen 11C, Huddinge, SE-14157, Sweden, Tel +46 707 26 76 77, Email
| | - Mar Torras
- Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, SE-141 57, Sweden
| | - Ying Zhao
- Department of Laboratory Medicine, Karolinska Institute, Huddinge, SE-141 57, Sweden
| | - Anna J Svagan
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, SE-100 44, Sweden
| | - Dmitry Grishenkov
- Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, SE-141 57, Sweden
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Barco I, García-Fernández A, Chabrera C, Fraile M, Vallejo E, Lain JM, Deu J, González S, González C, Veloso E, Torres J, Torras M, Cirera L, Pessarrodona A, Giménez N, García-Font M. The appropriate axillary procedure after a positive sentinel node in breast cancer patients: the "Hôpital Tenon" score revisited. A two-institution study. Clin Transl Oncol 2016; 18:1098-1105. [PMID: 26920150 DOI: 10.1007/s12094-016-1487-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 01/13/2016] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Until recently, completion ALND has been considered the standard of care after a positive SN in breast cancer patients. However, most patients will not display further axillary involvement. The Tenon score is a simple nomogram that can be used intraoperatively to avoid completion ALND in low-risk patients. We aimed at validating the Tenon score on a SN-positive patient sample that had been preoperatively selected using axillary US examination. PATIENTS AND METHOD We used a retrospective analysis of our bicentric database that included 246 breast cancer patients with a positive SN. We calculated sensitivity, specificity, as well as positive and negative predictive values for each cut-off point. ROCs were constructed and corresponding AUC values were calculated as a measure of discriminative capacity. RESULTS At least one non-SN was positive in 52 patients (21.1 %). 118 patients (48 %) had a score up to 5. Among them, three had at least one positive non-SN. NPV was 97.5 %. Using that threshold, the ROCs analysis showed an AUC of 0.822 (95 % CI 0.764-0.880). CONCLUSION Use of preoperative axillary US examination led to a modification of the proposed Tenon cut-off value from 3.5 to 5 to attain good predictive power for non-SN status. Straightforward intraoperative use of the Tenon score may be considered an advantage over other available nomograms.
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Affiliation(s)
- I Barco
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain
| | - A García-Fernández
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain.
| | - C Chabrera
- Department of Nursing, School of Health Science, TecnoCampus Mataró-Maresme, Mataró, Spain
| | - M Fraile
- Nuclear Medicine Department, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - E Vallejo
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain
| | - J M Lain
- Breast Unit, Department of Gynecology, Hospital of Terrassa, Health Consortium of Terrassa, Terrassa, Spain
| | - J Deu
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain
| | - S González
- Breast Unit, Department of Hemato-oncology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - C González
- Breast Unit, Department of Pathology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - E Veloso
- Breast Unit, Department of Surgery, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - J Torres
- Breast Unit, Department of Radiology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - M Torras
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain
| | - L Cirera
- Breast Unit, Department of Hemato-oncology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | - A Pessarrodona
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, C/ Sant Antoni, 21, 08221, Terrassa, Spain
| | - N Giménez
- University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain.,Laboratory of Toxicology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M García-Font
- University International of Catalunya, Barcelona, Spain
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García Fernández A, Chabrera C, García Font M, Fraile M, Lain JM, Gónzalez S, Corral C, Torras M, Torres J, Teixido M, Barco I, López R, Gónzalez C, Pessarrodona A, Giménez N. Mortality and recurrence patterns of breast cancer patients diagnosed under a screening programme versus comparable non-screened breast cancer patients from the same population: analytical survey from 2002 to 2012. Tumour Biol 2013; 35:1945-53. [PMID: 24114015 DOI: 10.1007/s13277-013-1260-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/25/2013] [Indexed: 11/30/2022] Open
Abstract
Breast cancer screening programmes seem to bring about significant benefits, including decreased mortality, although they may also have some drawbacks such as false-negative and false-positive results. This study aims to compare the clinical outcome of a group of patients undergoing a breast cancer screening programme with that of a synchronous non-screened group of patients matched for age and follow-up period. We studied basic characteristics of epidemiology, immunohistochemistry, loco-regional relapse, distant metastases, disease-free interval and overall and specific mortality. We compared 510 patients in the screened group with 394 non-screened patients, along the period of 2002-2012. Screening was applied on a target population of 49,847 and was based on double-projection, double-read mammograms. Two years were allowed per round. Overall participation for the five rounds considered was 75.2%, with 86.5% coverage, and a total cumulative population of 123,445. The non-participant women amounted 40,794. Tumour detection rate for the screened women was 3.8 per thousand (475/123,445), while the corresponding rate for non-participants was 9.4 per thousand (382/40,797). Incidence of luminal A subtype was 15% higher in screened than that in non-screened patients (95% confidence interval (CI) 8-22%). Conversely, the triple-negative subtype was 6% higher in the non-screened group (95% CI 2-10%). Incidence of breast conservative treatments and sentinel node biopsies was significantly higher in the screened group. Overall mortality was 2.6 times higher in non-screened than that in screened group (95% CI 1.2-5.6) After 10 years of experience with our own screening programme, we believe that included patients receive a benefit versus comparable non-screened breast cancer patients, with acceptable benefit-risk relation.
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Affiliation(s)
- A García Fernández
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Barcelona, Spain,
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García Fernández A, Giménez N, Fraile M, González S, Chabrera C, Torras M, González C, Salas A, Barco I, Cirera L, Cambra M, Veloso E, Pessarrodona A. Survival and clinicopathological characteristics of breast cancer patient according to different tumour subtypes as determined by hormone receptor and Her2 immunohistochemistry. A single institution survey spanning 1998 to 2010. Breast 2012; 21:366-73. [DOI: 10.1016/j.breast.2012.03.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 03/06/2012] [Accepted: 03/13/2012] [Indexed: 11/30/2022] Open
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García Fernández A, Fraile M, Giménez N, Reñe A, Torras M, Canales L, Torres J, Barco I, González S, Veloso E, González C, Cirera L, Pessarrodona A. Use of axillary ultrasound, ultrasound-fine needle aspiration biopsy and magnetic resonance imaging in the preoperative triage of breast cancer patients considered for sentinel node biopsy. Ultrasound Med Biol 2011; 37:16-22. [PMID: 21144955 DOI: 10.1016/j.ultrasmedbio.2010.10.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Revised: 09/24/2010] [Accepted: 10/09/2010] [Indexed: 05/10/2023]
Abstract
We assessed the diagnostic yield of axillary ultrasound, alone or in combination with fine-needle aspiration axillary biopsy and magnetic resonance imaging in patients with invasive breast carcinoma compared with final axillary histology by sentinel node biopsy or by axillary lymph node dissection. From January 2003 to March 2009, 520 axillary ultrasound examinations and 105 axillary magnetic resonance imaging studies were included. Compared with final axillary histology, ultrasound fine-needle aspiration showed positive predictive value of 87%, negative predictive value of 82%, sensitivity of 53% and specificity of 100%. In cases of negative ultrasound, the rate of positive nodes was 17% (micro-metastases excluded). Ultrasound examination of the axilla, combined with fine-needle aspiration as appropriate must be included in the preoperative work-up of patients considered for sentinel node biopsy to definitively establish such an indication while minimizing the risk of false-negative sentinel node. Axillary magnetic resonance imaging did not improve the preoperative work-up.
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Affiliation(s)
- Antonio García Fernández
- Breast Unit, Department of Gynecology, University Hospital of Mútua Terrassa, Research Foundation Mútua Terrassa, University of Barcelona, Spain.
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Torras M, Portell I, Morgado I. [The amigdaloid body: functional implications]. Rev Neurol 2001; 33:471-6. [PMID: 11727217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
INTRODUCTION The amygdaloid body is a structure localized to the temporal lobe in mammals, formed by different nuclei and traditionally associated with the emotion system of the brain. Some investigators have suggested an alternative function for the amygdaloid body, considering it to be part of the system modulating memory. Much of the experimental data supports both functions. DEVELOPMENT The relation of the amygdaloid body with the emotions has been based on the study of the conditioning of fear, by which an emotionally neutral stimulus can cause emotional reactions due to its temporal association with an adverse stimulus. It has been shown that the amygdaloid body is necessary for learning and expressing this conditioning, and is therefore involved in emotional learning. With regard to the relation of the amygdaloid body with the modulation of memory, one should point out the results which show that it is not always necessary for learning and memory, but is necessary for showing the modulating effects of different substances on memory. The amygdaloid body modulates the storage of memory in other regions of the brain, such as the caudate nucleus and the hippocampus. CONCLUSIONS Current data suggests that the whole amygdaloid complex is not involved in the two functions. However, the lateral and central nuclei participate in emotional learning whilst the basolateral nucleus is especially involved in modulation of the memory when emotional activation occurs.
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Affiliation(s)
- M Torras
- Departamento de Psicobiología y Metodología Ciencias de la Salud, Facultad de Psicología, Universitad Autonoma de Barcelona. Barcelona, España
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