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Gustafsson A, Jonasson E, Ståhlberg A, Landberg G. Proteomics of cell-free breast cancer scaffolds identify clinically relevant imprinted proteins and cancer-progressing properties. Cancer Commun (Lond) 2024. [PMID: 38576182 DOI: 10.1002/cac2.12542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 03/15/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024] Open
Affiliation(s)
- Anna Gustafsson
- Sahlgrenska Center for Cancer Research, Department of Laboratory of Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Emma Jonasson
- Sahlgrenska Center for Cancer Research, Department of Laboratory of Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Anders Ståhlberg
- Sahlgrenska Center for Cancer Research, Department of Laboratory of Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Göran Landberg
- Sahlgrenska Center for Cancer Research, Department of Laboratory of Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
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van Wyk P, Wannberg M, Gustafsson A, Yan J, Wikman A, Riddez L, Wahlgren CM. Characteristics of traumatic major haemorrhage in a tertiary trauma center. Scand J Trauma Resusc Emerg Med 2024; 32:24. [PMID: 38528572 DOI: 10.1186/s13049-024-01196-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/15/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Major traumatic haemorrhage is potentially preventable with rapid haemorrhage control and improved resuscitation techniques. Although advances in prehospital trauma management, haemorrhage is still associated with high mortality. The aim of this study was to use a recent pragmatic transfusion-based definition of major bleeding to characterize patients at risk of major bleeding and associated outcomes in this cohort after trauma. METHODS This was a retrospective cohort study including all trauma patients (n = 7020) admitted to a tertiary trauma center from January 2015 to June 2020. The major bleeding cohort (n = 145) was defined as transfusion of 4 units of any blood components (red blood cells, plasma, or platelets) within 2 h of injury. Univariate and multivariable logistic regression analyses were performed to identify risk factors for 24-hour and 30-day mortality post trauma admission. RESULTS In the major bleeding cohort (n = 145; 145/7020, 2.1% of the trauma population), there were 77% men (n = 112) and 23% women (n = 33), median age 39 years [IQR 26-53] and median Injury Severity Score (ISS) was 22 [IQR 13-34]. Blunt trauma dominated over penetrating trauma (58% vs. 42%) where high-energy fall was the most common blunt mechanism and knife injury was the most common penetrating mechanism. The major bleeding cohort was younger (OR 0.99; 95% CI 0.98 to 0.998, P = 0.012), less female gender (OR 0.66; 95% CI 0.45 to 0.98, P = 0.04), and had more penetrating trauma (OR 4.54; 95% CI 3.24 to 6.36, P = 0.001) than the rest of the trauma cohort. A prehospital (OR 2.39; 95% CI 1.34 to 4.28; P = 0.003) and emergency department (ED) (OR 6.91; 95% CI 4.49 to 10.66, P = 0.001) systolic blood pressure < 90 mmHg was associated with the major bleeding cohort as well as ED blood gas base excess < -3 (OR 7.72; 95% CI 5.37 to 11.11; P < 0.001) and INR > 1.2 (OR 3.09; 95% CI 2.16 to 4.43; P = 0.001). Emergency damage control laparotomy was performed more frequently in the major bleeding cohort (21.4% [n = 31] vs. 1.5% [n = 106]; OR 3.90; 95% CI 2.50 to 6.08; P < 0.001). There was no difference in transportation time from alarm to hospital arrival between the major bleeding cohort and the rest of the trauma cohort (47 [IQR 38;59] vs. 49 [IQR 40;62] minutes; P = 0.17). However, the major bleeding cohort had a shorter time from ED to first emergency procedure (71.5 [IQR 10.0;129.0] vs. 109.00 [IQR 54.0; 259.0] minutes, P < 0.001). In the major bleeding cohort, patients with penetrating trauma, compared to blunt trauma, had a shorter alarm to hospital arrival time (44.0 [IQR 35.5;54.0] vs. 50.0 [IQR 41.5;61.0], P = 0.013). The 24-hour mortality in the major bleeding cohort was 6.9% (10/145). All fatalities were due to blunt trauma; 40% (4/10) high energy fall, 20% (2/10) motor vehicle accident, 10% (1/10) motorcycle accident, 10% (1/10) traffic pedestrian, 10% (1/10) traffic other, and 10% (1/10) struck/hit by blunt object. In the logistic regression model, prehospital cardiac arrest (OR 83.4; 95% CI 3.37 to 2063; P = 0.007) and transportation time (OR 0.95, 95% CI 0.91 to 0.99, P = 0.02) were associated with 24-hour mortality. RESULTS Early identification of patients at high risk of major bleeding is challenging but essential for rapid definitive haemorrhage control. The major bleeding trauma cohort is a small part of the entire trauma population, and is characterized of being younger, male gender, higher ISS, and exposed to more penetrating trauma. Early identification of patients at high risk of major bleeding is challenging but essential for rapid definitive haemorrhage control.
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Affiliation(s)
- Pieter van Wyk
- Section of Acute and Trauma Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Marcus Wannberg
- Department of Molecular Medicine and Surgery, Department of Vascular Surgery, Karolinska Institute, Karolinska University Hospital, SE-171 76, Stockholm, Sweden
| | - Anna Gustafsson
- Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Jane Yan
- Division of Biostatistics, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Agneta Wikman
- Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Louis Riddez
- Section of Acute and Trauma Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Carl-Magnus Wahlgren
- Department of Molecular Medicine and Surgery, Department of Vascular Surgery, Karolinska Institute, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
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Axelsson I, Gustafsson A, Isaksson H, Nilsson J, Malm T. Impact of storage time prior to cryopreservation on mechanical properties of aortic homografts. Cell Tissue Bank 2024; 25:27-37. [PMID: 36843158 PMCID: PMC10902001 DOI: 10.1007/s10561-023-10079-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/04/2023] [Indexed: 02/28/2023]
Abstract
Optimal time spans in homograft procurement are still debatable among tissue banks and needs to be further investigated. Cell viability decreases at longer preparation intervals, but the effect on collagen and elastic fibers has not been investigated to the same extent. These fibers are of importance to the homograft elasticity and strength. The objective of this study was to analyze the mechanical properties of homograft tissue at different time spans in the procurement process. Ten aortic homografts were collected at the Tissue Bank in Lund. Twelve samples were obtained from each homograft, cryopreserved in groups of three after 2-4 days, 7-9 days, 28-30 days, and 60-62 days in antibiotic decontamination. Mechanical testing was performed with uniaxial tensile tests, calculating elastic modulus, yield stress and energy at yield stress. Two randomly selected samples were assessed with light microscopy. Procurement generated a total of 120 samples, with 30 samples in each time group. Elastic modulus and yield stress was significantly higher in samples cryopreserved after 2-4 days (2.7 MPa (2.5-5.0) and 0.78 MPa (0.68-1.0)) compared to 7-9 days (2.2 MPa (2.0-2.6) and 0.53 MPa (0.46-0.69)), p = 0.008 and 0.011 respectively. Light microscopy did not show any difference in collagen and elastin at different time spans. There was a significant decrease in elastic modulus and yield stress after 7 days of decontamination at 4 °C compared to 2-4 days. This could indicate some deterioration of elastin and collagen at longer decontamination intervals. Clinical significance of these findings remains to be clarified.
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Affiliation(s)
- Ida Axelsson
- Tissue Bank Lund, Baravägen 37, 22242, Lund, Sweden.
- Department of Cardiothoracic Surgery, Skane University Hospital, Lund, Sweden.
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden.
| | - Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Johan Nilsson
- Department of Cardiothoracic Surgery, Skane University Hospital, Lund, Sweden
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden
- Department of Translational Medicine, Artificial Intelligence and Bioinformatics in Cardiothoracic Sciences, Lund University, Lund, Sweden
| | - Torsten Malm
- Tissue Bank Lund, Baravägen 37, 22242, Lund, Sweden
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden
- Pediatric Cardiac Surgery Unit, Children's Hospital, Skane University Hospital, Lund, Sweden
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Tassidis H, Jankovskaja S, Awad K, Ohlsson L, Gjörloff Wingren A, Gustafsson A. Investigation of tryptophan to kynurenine degradation in response to interferon-γ in melanoma cell lines. Biochem Biophys Rep 2024; 37:101612. [PMID: 38188364 PMCID: PMC10770592 DOI: 10.1016/j.bbrep.2023.101612] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/07/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024] Open
Abstract
Background and aim Melanoma is a fatal form of skin cancer that carries a grave prognosis if the cancer cells spread and form metastases. The Kynurenine (Kyn) pathway is activated by the enzyme indoleamine 2,3-dioxygenase 1 (IDO-1) and has been shown to have a role in tumour progression. We have previously shown that interferon-γ (IFN-γ) acts as an inducer of tryptophan (Trp) degradation to Kyn in keratinocytes of the basal layer in a 3D epidermis model. Before extending our reconstructed human epidermis model to not only contain keratinocytes but also fibroblasts and melanocytes/melanoma cells, we have in this study set out to investigate possible differences between primary adult melanocytes and six melanoma cell lines regarding the expression of the immune checkpoint inhibitors IDO-1 and programmed death ligand 1 (PD-L1) together with Kyn production. Methods The melanocytes and melanoma cells were stimulated with 1-20 ng/ml of IFN-γ and the levels of Trp to Kyn degradation were monitored with high-performance liquid chromatography (HPLC). To analyze the viability of the cell types after IFN-γ treatment, an MTT assay was performed. mRNA quantity of IDO-1, PD-L1 and IFN-γ receptor (IFN-GR1) was analyzed with qPCR. Results After 24 h, only the metastatic cell line WM-266-4 was affected by all concentrations of IFN-γ, whereas at 48 h, the higher IFN-γ concentrations gave a more pronounced effect on the viability in all cell types. Trp was detected at various levels in the culture medium from all cell types before and after IFN-γ treatment. The degradation to Kyn was detected in primary melanocytes, Mel Juso, and Mel Ho cell lines after 24 h of treatment and low levels of IFN-γ. However, the higher concentration of IFN-γ, 20 ng/ml, induced Kyn to various degrees in all cell types after 24 h. The change in mRNA quantity of IDO-1 and PD-L1 was similar in all cell types. Conclusion To conclude, no significant difference in upregulation of the immune checkpoint inhibitors PD-L1 and IDO-1 was seen between primary tumour and metastatic melanoma. IFN-γ stimulation of melanocytes and different stages of melanoma cell lines resulted in an increased Kyn/Trp ratio in the more aggressive melanoma cells when a high concentration was used (20 ng/ml) but when a lower concentration of IFN-γ (5 ng/ml) was used an increased Kyn/Trp ratio were detected in media from primary melanocytes and early-stage melanoma.
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Affiliation(s)
- Helena Tassidis
- Department of Natural Science, Kristianstad University, Kristianstad, Sweden
| | - Skaidre Jankovskaja
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Kassem Awad
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Lars Ohlsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Anna Gustafsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
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Axelsson I, Gustafsson A, Isaksson H, Nilsson J, Malm T. Correction to: Impact of storage time prior to cryopreservation on mechanical properties of aortic homografts. Cell Tissue Bank 2024; 25:39-41. [PMID: 37067750 PMCID: PMC10901928 DOI: 10.1007/s10561-023-10085-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Affiliation(s)
- Ida Axelsson
- Tissue Bank Lund, Baravägen 37, 22242, Lund, Sweden.
- Department of Cardiothoracic Surgery, Skane University Hospital, Lund, Sweden.
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden.
| | - Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Johan Nilsson
- Department of Cardiothoracic Surgery, Skane University Hospital, Lund, Sweden
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden
- Department of Translational Medicine, Artificial Intelligence and Bioinformatics in Cardiothoracic Sciences, Lund University, Lund, Sweden
| | - Torsten Malm
- Tissue Bank Lund, Baravägen 37, 22242, Lund, Sweden
- Department of Clinical Science, Cardiothoracic Surgery, Lund University, Lund, Sweden
- Pediatric Cardiac Surgery Unit, Children's Hospital, Skane University Hospital, Lund, Sweden
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Gustafsson A, Johansson E, Henckel E, Olin A, Rodriguez L, Brodin P, Lange S, Bohlin K. Antisecretory factor in breastmilk is associated with reduced incidence of sepsis in preterm infants. Pediatr Res 2024; 95:762-769. [PMID: 38001236 PMCID: PMC10899102 DOI: 10.1038/s41390-023-02909-3] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/28/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND Antisecretory Factor (AF) is a protein present in breastmilk that regulates inflammatory processes. We aimed to investigate the level of AF in mothers' own milk (MOM) in relation to sepsis and other neonatal morbidities in preterm infants. METHODS Samples of breastmilk and infant plasma were collected at 1, 4, and 12 weeks after birth from 38 mothers and their 49 infants born before 30 weeks gestation. AF-compleasome in MOM was determined by a sandwich enzyme-linked immunosorbent assay (ELISA) and inflammatory markers in infant plasma by a panel of 92 inflammatory proteins. Neonatal treatments and outcomes were recorded. RESULTS The level of AF in MOM week 1 was lower for infants with later sepsis compared to no sepsis (p = 0.005). Corrected for nutritional intake of MOM, higher levels of AF decreased the risk for sepsis, OR 0.24. AF in MOM week 1 was negatively correlated to inflammatory proteins in infant plasma week 4, markedly IL-8, which was also associated with infant sepsis. Overall, higher AF levels in MOM was associated with fewer major morbidities of prematurity. CONCLUSION Mother's milk containing high levels of antisecretory factor is associated with reduced risk for sepsis and inflammation in preterm infants. IMPACT High level of antisecretory factor (AF) in mothers' own milk is associated with less risk for later sepsis in preterm infants. Receiving mothers' milk with low AF levels during the first week after birth is correlated with more inflammatory proteins in infant's plasma 2-4 weeks later. Human breastmilk has anti-inflammatory properties, and antisecretory factor in mothers' own milk is a component of potential importance for infants born preterm. The findings suggest that food supplementation with AF to mothers of preterm infants to increase AF-levels in breastmilk may be a means to decrease the risk of inflammatory morbidities of prematurity.
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Affiliation(s)
- Anna Gustafsson
- Department of Neonatology, Karolinska University Hospital, SE-17176, Stockholm, Sweden.
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
| | - Ewa Johansson
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, Gothenburg, Sweden
- Sahlgrenska University Hospital, Department of Clinical Microbiology, Västra Götaland Region, Gothenburg, Sweden
| | - Ewa Henckel
- Department of Neonatology, Karolinska University Hospital, SE-17176, Stockholm, Sweden
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Axel Olin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, and Unit of Infectious Diseases, Karolinska University Hospital, SE-17176, Stockholm, Sweden
| | - Lucie Rodriguez
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, and Unit of Infectious Diseases, Karolinska University Hospital, SE-17176, Stockholm, Sweden
| | - Petter Brodin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, and Unit of Infectious Diseases, Karolinska University Hospital, SE-17176, Stockholm, Sweden
| | - Stefan Lange
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, Gothenburg, Sweden
- Sahlgrenska University Hospital, Department of Clinical Microbiology, Västra Götaland Region, Gothenburg, Sweden
| | - Kajsa Bohlin
- Department of Neonatology, Karolinska University Hospital, SE-17176, Stockholm, Sweden
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
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Leiva MC, Gustafsson A, Garre E, Ståhlberg A, Kovács A, Helou K, Landberg G. Patient-derived scaffolds representing breast cancer microenvironments influence chemotherapy responses in adapted cancer cells consistent with clinical features. J Transl Med 2023; 21:924. [PMID: 38124067 PMCID: PMC10734148 DOI: 10.1186/s12967-023-04806-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND The tumor microenvironment clearly influences cancer progressing properties but less is known about how individual cancer microenvironments potentially moderate cancer treatment effects. By cultivating and treating cancer cell lines in patient-derived scaffolds (PDS), the impact of specific characteristics of individual cancer microenvironments can be incorporated in human-like growth modelling and cancer drug treatment testing. METHODS PDSs from 78 biobanked primary breast cancer samples with known patient outcomes, were prepared and repopulated with donor breast cancer cell lines, followed by treatment with 5-fluorouracil or doxorubicin after cellular adaption to the various microenvironments. Cancer cell responses to the treatments were monitored by RNA-analyses, highlighting changes in gene sets representative for crucial tumor biological processes such as proliferation, cancer stem cell features, differentiation and epithelial-to-mesenchymal transition. RESULTS The chemotherapy treatments induced distinct gene expression patterns in adapted cancer cells with clusters of similar treatment responses depending on the patient-derived cancer microenvironment used as growth substrate. The doxorubicin treatment displayed a favorable gene signature among surviving cancer cells with low proliferation (MKI67) and pluripotency features (NANOG, POU5F1), in comparison to 5-fluorouracil showing low proliferation but increased pluripotency. Specific gene changes monitored post-treatment were also significantly correlated with clinical data, including histological grade (NANOG), lymph node metastasis (SLUG) and disease-free patient survival (CD44). CONCLUSIONS This laboratory-based treatment study using patient-derived scaffolds repopulated with cancer cell lines, clearly illustrates that the human cancer microenvironment influences chemotherapy responses. The differences in treatment responses defined by scaffold-cultures have potential prognostic and treatment predictive values.
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Affiliation(s)
- Maria Carmen Leiva
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Elena Garre
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
- Department of Clinical Pathology, Sahlgrenska University Hospital, 41345, Gothenburg, Sweden
| | - Anders Ståhlberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
- Wallenberg Center for Molecular and Translational Medicine, University of Gothenburg, 41390, Gothenburg, Sweden
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, 41345, Gothenburg, Sweden
| | - Anikó Kovács
- Department of Clinical Pathology, Sahlgrenska University Hospital, 41345, Gothenburg, Sweden
| | - Khalil Helou
- Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Center for Cancer Research, Sahlgrenska Academy, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Göran Landberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden.
- Department of Clinical Pathology, Sahlgrenska University Hospital, 41345, Gothenburg, Sweden.
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Hofmarcher T, Szilagyiova P, Gustafsson A, Dolezal T, Rutkowski P, Baxter C, Karamousouli E. Access to novel cancer medicines in four countries in Central and Eastern Europe in relation to clinical benefit. ESMO Open 2023; 8:101593. [PMID: 37413761 PMCID: PMC10485399 DOI: 10.1016/j.esmoop.2023.101593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Almost 100 novel cancer medicines have been approved in Europe over the last decade. Limited public health care resources in countries in Central and Eastern Europe (CEE) call for a prioritization of access to effective medicines. We investigated how both reimbursement status and waiting time to reimbursement correlate with the magnitude of clinical benefit provided by novel medicines in four selected countries (Czechia, Hungary, Poland, and Slovakia). MATERIALS AND METHODS A total of 124 indications of 51 cancer medicines with marketing authorization by the European Medicines Agency in 2011-2020 were included and followed up until 2022. Data on reimbursement status and waiting time to reimbursement (i.e. time from marketing authorization to national reimbursement approval) were collected for each country. Data were analyzed in relation to clinical benefit status (i.e. substantial versus nonsubstantial clinical benefit) of indications according to the European Society for Medical Oncology Magnitude of Clinical Benefit Scale (ESMO-MCBS). RESULTS The degree of reimbursement differed between countries with 64% of indications with reimbursement in Czechia, 40% in Hungary, 51% in Poland, and 19% in Slovakia. In all countries, a significantly greater proportion of indications with a substantial clinical benefit was reimbursed (P < 0.05). The median waiting time to reimbursement ranged from 27 months in Poland to 37 months in Hungary. No significant differences in waiting time in relation to clinical benefit were observed in any country (P = 0.25-0.84). CONCLUSIONS Cancer medicines with a substantial clinical benefit are more likely to be reimbursed in all four CEE countries. Waiting times to reimbursement are equally long for medicines with or without a substantial clinical benefit, indicating a lack of prioritization of fast access to medicines delivering a substantial benefit. Incorporation of the ESMO-MCBS in reimbursement assessments and decisions could aid in better utilization of limited resources to deliver more effective cancer care.
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Affiliation(s)
- T Hofmarcher
- IHE - The Swedish Institute for Health Economics, Lund, Sweden.
| | | | - A Gustafsson
- IHE - The Swedish Institute for Health Economics, Lund, Sweden
| | - T Dolezal
- Value Outcomes s.r.o., Praha 2, Czech Republic
| | - P Rutkowski
- Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
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Gjörloff Wingren A, Ziyad Faik R, Holefors A, Filecovic E, Gustafsson A. In vitro effects of undifferentiated callus extracts from Plantago major L, Rhodiola rosea L and Silybum marianum L in normal and malignant human skin cells. Heliyon 2023; 9:e16480. [PMID: 37292297 PMCID: PMC10245016 DOI: 10.1016/j.heliyon.2023.e16480] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 06/10/2023] Open
Abstract
Background and objectives The occurrence of non-melanoma and melanoma skin cancers is currently increasing rapidly with one in every three cancers diagnosed as a skin cancer. A useful strategy to control the progression of skin cancer could be the use of plant flavonoids that suppress pro-inflammatory cytokines involved in tumor initiation and progression. In this study, the anti-inflammatory and antioxidant activity of undifferentiated callus extracts from Plantago major L, Silybum marianum L and Rhodiola rosea L was investigated both in normal and malignant skin cells. Methods Antioxidant activity of the extracts was analyzed by using the Trolox Equivalent Antioxidant Capacity (TEAC) assay. High-Performance Thin-Layer Chromatography (HPTLC) was performed to demonstrate the phytochemical profile, and the total flavonoid content was analyzed with an aluminum chloride colorimetric method. The anti-inflammatory effect was investigated by cell treatments using the plant extracts. Thereafter, the possible suppression of induced IL-6 response was measured from the cultured skin cancer cell lines A2058 and A431, and normal primary keratinocytes with Enzyme-Linked Immunosorbent Assay (ELISA). Results The HPTLC analysis assessed that the extracts contained a complex phytochemical profile that was rich in phenolic and flavonoid compounds. Dose response assays showed that concentrations between 15 and 125 μg/mL of all three plant extracts could be used to investigate an effect on the IL-6 production. The S. marianum extract had the most pronounced anti-inflammatory effect, which significantly inhibited induced IL-6 production in both normal keratinocytes and skin cells derived from epidermal carcinoma. The extract from S. marianum also had the highest flavonoid content and showed the highest antioxidant activity of the three extracts tested. Conclusion All in all, we have confirmed that undifferentiated callus extracts of S. marianum possess properties such as antioxidant and anti-inflammatory activities in both normal and malignant keratinocytes, and thus could be a promising agent controlling the pro-inflammatory IL-6 production.
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Affiliation(s)
- Anette Gjörloff Wingren
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Riyam Ziyad Faik
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Anna Holefors
- In Vitro Plant-Tech AB, Geijersg 4B, 21618 Limhamn, Sweden
| | - Edina Filecovic
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Anna Gustafsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, Malmö, Sweden
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10
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Winkler A, Isacson M, Gustafsson A, Svedenkrans J, Andersson O. Cord clamping beyond 3 minutes: Neonatal short-term outcomes and maternal postpartum hemorrhage. Birth 2022; 49:783-791. [PMID: 35502141 PMCID: PMC9790379 DOI: 10.1111/birt.12645] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/15/2021] [Accepted: 04/14/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Delaying cord clamping (CC) for 3-5 minutes reduces iron deficiency and improves neurodevelopment. Data on the effects of CC beyond 3 minutes in relation to short-term neonatal outcomes and maternal risk of postpartum hemorrhage are scarce. METHODS This was a prospective observational study performed in two delivery departments. Pregnant women with vaginal deliveries were included. Time to CC, estimated postpartum blood loss, and perinatal data were recorded. Spearman's correlation analysis and comparisons between newborns clamped before and after 3 minutes were performed. RESULTS In total, 904 dyads were included. The mean gestational age ± standard deviation was 40.1 ± 1.2 weeks. CC was performed at a median time of 6 minutes (range 0-23.5). Apgar scores at 5 and 10 minutes were positively correlated with time to CC (correlation coefficient .140, P < .001 and .161, < .001). There was no correlation between CC time and bilirubin level (correlation coefficient .021, P = .54). The median postpartum blood loss was 300 mL (70-2550 mL), with a negative correlation between CC time and postpartum blood loss (-0.115, P = .001). The postpartum blood loss was larger in the group clamped at ≤3 minutes (median [interquartile range] 400 mL [300-600] vs 300 mL [250-450], [P = .003]]. CONCLUSIONS Umbilical CC times beyond 3 minutes in vaginal deliveries were not associated with negative short-term outcomes in newborns and were associated with a smaller maternal postpartum blood loss. Although CC time as long as 6 minutes could be considered as safe, further research is needed to decide the optimal timing.
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Affiliation(s)
- Andreas Winkler
- Department of PediatricsHospital of HallandHalmstad/VarbergSweden
| | - Manuela Isacson
- Sachs' Children and Youth HospitalSödersjukhusetStockholmSweden,Department of Clinical Sciences, PediatricsLund UniversityLundSweden
| | - Anna Gustafsson
- Department of Obstetrics and GynecologyHospital of HallandHalmstad/VarbergSweden
| | - Jenny Svedenkrans
- Department of Clinical Sciences, PediatricsLund UniversityLundSweden,Division of Pediatrics, Department of Clinical Science, Intervention and TechnologyKarolinska InstitutetStockholmSweden,Department of NeonatologyKarolinska University HospitalStockholmSweden
| | - Ola Andersson
- Department of Clinical Sciences, PediatricsLund UniversityLundSweden,Department of NeonatologySkåne University HospitalMalmöSweden
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11
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Dolatshahi S, Butler AL, Pou C, Henckel E, Bernhardsson AK, Gustafsson A, Bohlin K, Shin SA, Lauffenburger DA, Brodin P, Alter G. Selective transfer of maternal antibodies in preterm and fullterm children. Sci Rep 2022; 12:14937. [PMID: 36056073 PMCID: PMC9440225 DOI: 10.1038/s41598-022-18973-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 08/23/2022] [Indexed: 01/11/2023] Open
Abstract
Preterm newborns are more likely to suffer from infectious diseases at birth compared to children delivered at term. Whether this is due to compromised cellular, humoral, or organ-specific development remains unclear. To begin to define whether maternal-fetal antibody transfer profiles differ across preterm (PT) and fullterm (FT) infants, the overall quantity and functional quality of an array of 24 vaccine-, endemic pathogen-, and common antigen-specific antibodies were assessed across a cohort of 11 PT and 12 term-delivered maternal:infant pairs from birth through week 12. While total IgG levels to influenza, pneumo, measles, rubella, EBV, and RSV were higher in FT newborns, selective Fc-receptor binding antibodies was noted in PT newborns. In fact, near equivalent antibody-effector functions were observed across PT and FT infants, despite significant quantitative differences in transferred antibody levels. Moreover, temporal transfer analysis revealed the selective early transfer of FcRn, FcγR2, and FcγR3 binding antibodies, pointing to differential placental sieving mechanisms across gestation. These data point to selectivity in placental transfer at distinct gestational ages, to ensure that children are endowed with the most robust humoral immunity even if born preterm.
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Affiliation(s)
- Sepideh Dolatshahi
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Biomedical Engineering Department, University of Virginia, Charlottesville, VA, USA
| | | | - Christian Pou
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Ewa Henckel
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Karolinska University Hospital, Stockholm, Sweden
| | - Anna Karin Bernhardsson
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Karolinska University Hospital, Stockholm, Sweden
| | - Anna Gustafsson
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Karolinska University Hospital, Stockholm, Sweden
| | - Kajsa Bohlin
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Karolinska University Hospital, Stockholm, Sweden
| | - Sally A Shin
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Douglas A Lauffenburger
- Department of Biological Engineering and Center for Gynepathology Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Petter Brodin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
- Karolinska University Hospital, Stockholm, Sweden.
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.
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12
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Stollenwerk MM, Gustafsson A, Edgren G, Gudmundsson P, Lindqvist M, Eriksson T. Core competencies for a biomedical laboratory scientist - a Delphi study. BMC Med Educ 2022; 22:476. [PMID: 35725406 PMCID: PMC9208704 DOI: 10.1186/s12909-022-03509-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND After completing university education, biomedical laboratory scientists work in clinical laboratories, in biomedical research laboratories, in biotech, and in pharmaceutical companies. Laboratory diagnostics have undergone rapid development over the recent years, with the pace showing no signs of abatement. This rapid development challenges the competence of the staff and will most certainly influence the education of future staff. This study aimed to examine what was considered the necessary competencies needed to pursue a career as a biomedical laboratory scientist. METHODS A modified Delphi technique was used, with the panel of experts expressing their views in a series of three questionnaire. Consensus was defined as the point which 75 % or more of the panel participants agreed that a particular competency was necessary. RESULTS The study highlights the perceived importance of mostly generic competencies that relate to quality, quality assurance, and accuracy, as well as different aspects of safety, respect, trustworthiness (towards patients/clients and colleagues), and communication skills. The results also stress the significance of self-awareness and professionality. CONCLUSIONS We identified important competencies for biomedical laboratory scientists. Together with complementary information from other sources, i.e., guidelines, laws, and scientific publications, the competencies identified can be used as learning outcomes in a competency-based education to provide students with all the competencies needed to work as professional biomedical laboratory scientists.
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Affiliation(s)
- Maria M Stollenwerk
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Anna Gustafsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden.
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden.
| | - Gudrun Edgren
- Center for Teaching and Learning, Faculty of Medicine, Lund University, Lund, Sweden
| | - Petri Gudmundsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | | | - Tommy Eriksson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden
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13
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Jankovskaja S, Morin M, Gustafsson A, Anderson CD, Lehoczki B, Engblom J, Björklund S, Rezeli M, Marko-Varga G, Ruzgas T. Non-Invasive, Topical Sampling of Potential, Low-Molecular Weight, Skin Cancer Biomarkers: A Study on Healthy Volunteers. Anal Chem 2022; 94:5856-5865. [PMID: 35394278 PMCID: PMC9022073 DOI: 10.1021/acs.analchem.1c05470] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Monitoring of low-molecular weight cancer biomarkers, such as tryptophan (Trp) and its derivative kynurenine (Kyn), might be advantageous to non-invasive skin cancer detection. Thus, we assessed several approaches of topical sampling of Trp and Kyn, in relation to phenylalanine (Phe) and tyrosine (Tyr), on the volar forearm of six healthy volunteers. The sampling was performed with three hydrogels (made of agarose or/and chitosan), hydrated starch films, cotton swabs, and tape stripping. The biomarkers were successfully sampled by all approaches, but the amount of collected Kyn was low, 20 ± 10 pmol/cm2. Kyn quantification was below LOQ, and thus, it was detected only in 20% of topical samples. To mitigate variability problems of absolute amounts of sampled amino acids, Tyr/Trp, Phe/Trp, and Phe/Tyr ratios were assessed, proving reduced inter-individual variation from 79 to 45% and intra-individual variation from 42 to 21%. Strong positive correlation was found between Phe and Trp, pointing to the Phe/Trp ratio (being in the 1.0-2.0 range, at 95% confidence) being least dependent on sampling materials, approaches, and sweating. This study leads to conclusion that due to the difficulty in quantifying less abundant Kyn, and thus the Trp/Kyn ratio, the Phe/Trp ratio might be a possible, alternative biomarker for detecting skin cancers.
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Affiliation(s)
- Skaidre Jankovskaja
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Maxim Morin
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Anna Gustafsson
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Chris D Anderson
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping 581 83, Sweden.,Department of Dermatology and Venereology, Linköping 581 83, Sweden
| | - Boglarka Lehoczki
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Johan Engblom
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Sebastian Björklund
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
| | - Melinda Rezeli
- Clinical Protein Science and Imaging, Department of Biomedical Engineering, Lund University, Lund 221 00, Sweden
| | - György Marko-Varga
- Clinical Protein Science and Imaging, Department of Biomedical Engineering, Lund University, Lund 221 00, Sweden
| | - Tautgirdas Ruzgas
- Department of Biomedical Science, Malmö University, Malmö 214 28, Sweden.,Biofilms─Research Center for Biointerfaces, Malmö University, Malmö 214 28, Sweden
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14
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Orozco GA, Tanska P, Gustafsson A, Korhonen RK, Isaksson H. Crack propagation in articular cartilage under cyclic loading using cohesive finite element modeling. J Mech Behav Biomed Mater 2022; 131:105227. [DOI: 10.1016/j.jmbbm.2022.105227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 03/01/2022] [Accepted: 04/02/2022] [Indexed: 11/28/2022]
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15
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Gustafsson A, Johansson E, Henckel E, Lange S, Bohlin K. Changes in Antisecretory Factor in Human Milk During the Postpartum and Length of Gestation. J Hum Lact 2022; 38:131-140. [PMID: 34074170 PMCID: PMC8814942 DOI: 10.1177/08903344211021306] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Preterm infants are more susceptible to inflammatory complications than term infants. Human milk contains numerous bioactive components protecting the newborn infant. Antisecretory factor, a protein regulating secretory and inflammatory processes by complex binding with complement factors, is present in human milk. RESEARCH AIMS To describe antisecretory factor (1) in mother's own milk in term and preterm infants; and (2) in donor milk before and after Holder pasteurization. METHODS The study was prospective, longitudinal, explorative, and descriptive. Antisecretory factor-compleasome was determined using sandwich enzyme-linked immunosorbent assay in longitudinal human milk samples over 12 weeks from mothers (N = 87) of term (n = 41) and of preterm (n = 46) infants and 20 anonymized donor human milk samples before and after Holder pasteurization. RESULTS Antisecretory factor-compleasome was overall higher in colostrum versus mature milk (p < .001) and no difference was found in term or preterm colostrum (p = .82). In mature milk, compleasome was higher and more variable in the preterm group (p = .01). After Holder pasteurization, compleasome levels increased (p < .001). CONCLUSION Antisecretory factor followed the pattern of other immunological factors with high levels in colostrum. After preterm birth, levels of antisecretory factor were higher and more variable in mature milk. Holder pasteurization did not degrade antisecretory factor, indicating preserved anti-inflammatory properties in donor human milk.
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Affiliation(s)
- Anna Gustafsson
- 27106 Department of Neonatology, Karolinska University Hospital, Stockholm, Sweden.,206106 Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Ewa Johansson
- 99018 Department of Infectious Diseases, Institute of Biomedicine, Gothenburg University, Gothenburg, Sweden.,Department of Clinical Microbiology, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Ewa Henckel
- 27106 Department of Neonatology, Karolinska University Hospital, Stockholm, Sweden.,206106 Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Stefan Lange
- 99018 Department of Infectious Diseases, Institute of Biomedicine, Gothenburg University, Gothenburg, Sweden.,Department of Clinical Microbiology, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Kajsa Bohlin
- 27106 Department of Neonatology, Karolinska University Hospital, Stockholm, Sweden.,206106 Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
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16
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Szczepanczyk M, Ruzgas T, Gullfot F, Gustafsson A, Björklund S. Catalase Activity in Keratinocytes, Stratum Corneum, and Defatted Algae Biomass as a Potential Skin Care Ingredient. Biomedicines 2021; 9:1868. [PMID: 34944684 PMCID: PMC8699009 DOI: 10.3390/biomedicines9121868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/02/2021] [Accepted: 12/02/2021] [Indexed: 11/16/2022] Open
Abstract
The generation of reactive oxygen species presents a destructive challenge for the skin organ and there is a clear need to advance skin care formulations aiming at alleviating oxidative stress. The aim of this work was to characterize the activity of the antioxidative enzyme catalase in keratinocytes and in the skin barrier (i.e., the stratum corneum). Further, the goal was to compare the activity levels with the corresponding catalase activity found in defatted algae biomass, which may serve as a source of antioxidative enzymes, as well as other beneficial algae-derived molecules, to be employed in skin care products. For this, an oxygen electrode-based method was employed to determine the catalase activity and the apparent kinetic parameters for purified catalase, as well as catalase naturally present in HaCaT keratinocytes, excised stratum corneum samples collected from pig ears with various amounts of melanin, and defatted algae biomass from the diatom Phaeodactylum tricornutum. Taken together, this work illustrates the versatility of the oxygen electrode-based method for characterizing catalase function in samples with a high degree of complexity and enables the assessment of sample treatment protocols and comparisons between different biological systems related to the skin organ or algae-derived materials as a potential source of skin care ingredients for combating oxidative stress.
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Affiliation(s)
- Michal Szczepanczyk
- Department of Biomedical Science, Malmö University, 214 32 Malmö, Sweden; (M.S.); (T.R.); (A.G.)
- Biofilms-Research Center for Biointerfaces, Malmö University, 214 32 Malmö, Sweden
- Simris Alg AB, 276 50 Hammenhög, Sweden;
| | - Tautgirdas Ruzgas
- Department of Biomedical Science, Malmö University, 214 32 Malmö, Sweden; (M.S.); (T.R.); (A.G.)
- Biofilms-Research Center for Biointerfaces, Malmö University, 214 32 Malmö, Sweden
| | | | - Anna Gustafsson
- Department of Biomedical Science, Malmö University, 214 32 Malmö, Sweden; (M.S.); (T.R.); (A.G.)
- Biofilms-Research Center for Biointerfaces, Malmö University, 214 32 Malmö, Sweden
| | - Sebastian Björklund
- Department of Biomedical Science, Malmö University, 214 32 Malmö, Sweden; (M.S.); (T.R.); (A.G.)
- Biofilms-Research Center for Biointerfaces, Malmö University, 214 32 Malmö, Sweden
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17
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Gustafsson A, Skogsberg J, Rejnö Å. Oral health plays second fiddle in palliative care: an interview study with registered nurses in home healthcare. BMC Palliat Care 2021; 20:173. [PMID: 34753462 PMCID: PMC8579523 DOI: 10.1186/s12904-021-00859-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022] Open
Abstract
Background Oral health is crucial to the experience of well-being, and symptoms from the mouth are common at the end of life. Palliative care aims to identify and treat symptoms early to avoid unnecessary suffering and is thus an important part of nursing in home healthcare. The aim of this study was to illustrate the professional reflections of registered nurses about oral health amongst patients in palliative care, who are being cared for in a home healthcare setting. Results The results showed oral health in end-of-life care, to be an area marked by responsibility and ethical considerations. This was seen in all four partly overlapping themes that emerged through the analysis: Oral health is easily overlooked in palliative care, Oral health is everybody’s but in reality nobody’s responsibility, Patient integrity can be an obstacle for oral health, and Focus on oral health is urgently needed. The mouth is often not included as part of the daily basic care routine, by the registered nurses and the home healthcare staff, until the patient is near end of life. Moreover, neither does the patient tell about symptoms from the mouth. The interpreted whole indicates that the registered nurses had a bad conscience about not doing what they are actually responsible for and ought to do. Conclusion The oral health of patients at the end of life risks being forgotten or falling between the cracks, due to the nurses’ scattered tasks and unclear delimitations between their, and other professionals’ responsibilities. The responsibilities of registered nurses are also ethically demanding, since their intent to respect the patient’s integrity could mean that in some cases the patients does not allow them to help with oral health. To reduce the risk that oral health is overlooked, clearer demarcation and guidelines on the division of responsibilities are required. Routines that clearly implement early and recurring oral health assessments in home healthcare as well as continuing education updates on oral health and oral care are also needed. Supplementary Information The online version contains supplementary material available at 10.1186/s12904-021-00859-3.
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Affiliation(s)
| | - Johanna Skogsberg
- MedPro Clinic Stavre Primary Health Care Centre, Trollhättan, Sweden
| | - Åsa Rejnö
- Department of Health Sciences, University West, Trollhättan, Sweden. .,Skaraborg institute of Research and Development, Skövde, Sweden. .,Department of Medicine, Skaraborg Hospital Skövde, Skövde, Sweden.
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18
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Affiliation(s)
- Mikaela Lenells
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Ewa Andersson
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Anna Gustafsson
- Clinical Science, Intervention and Technology, Division of Paediatrics; Karolinska Institutet; Stokholm Sweden
- Department of Neonatology; Karolinska University Hospital; Stockholm Sweden
| | - Michael Wells
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - Cindy-Lee Dennis
- Lawrence S. Bloomberg Faculty of Nursing; University of Toronto; Toronto Canada
| | - Emilija Wilson
- Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
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19
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Ferrannini G, Norhammar A, Almosawi M, Kjellstrom B, Buhlin K, De Faire U, Gustafsson A, Nygren LA, Nasman P, Lindahl B, Naslund U, Svenungsson E, Klinge B, Ryden L. Periodontitis and cardiovascular outcome – a prospective follow-up of the PAROKRANK cohort. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There is an association between periodontitis (PD) and myocardial infarction (MI). Whether that is related to shared risk factors or it is causal is debated. The Periodontitis and Its Relation to Coronary Artery Disease (PAROKRANK) case-control study previously reported on an independent association between PD and a first MI.
Purpose
This follow-up of the PAROKRANK study tests the hypothesis that PD increases the risk for new cardiovascular (CV) events.
Methods
Between 2010–2014 805 patients (age <75 years; females 19%) with a first MI and 805 controls without MI, matched for gender, age (mean 62±8 years) and living area underwent a CV and dental examination including panoramic x-ray. The PD was categorised in three grades: healthy (≥80% remaining alveolar bone height), moderate (79–66%) or severe (<66%). The composite primary endpoint was the first of all-cause death, non-fatal MI or stroke, or severe heart failure until December 2018. The first of CV-death, non-fatal MI or stroke, or severe heart failure served as a secondary CV-endpoint. Data on outcomes were provided via linkage to the National Patient Registries and the Cause of Death Registry. Cumulative event rates, stratified by PD status at baseline in the combined cohort of cases and controls, were calculated using logistic regression and the Kaplan-Meier method.
Results
A total of 1587 participants with evaluated PD-status were followed for a mean of 6.2 (range 0.2–8.5) years. The total number of primary events and CV-events was 205 and 158 respectively. The number of deaths was 68. Baseline PD-status was healthy in 985 (mean age 60.4 years), moderate in 489 (mean age 65.1 years) and severe in 113 (mean age 64.3 years) participants. The figure presents the time to primary event by the three PD grades in the combined cohort (patients and controls). Time to the primary endpoint differed between the three PD grades (log-rank test 0.0148), however, significant only for patients (log-rank test patients vs. controls: 0.0382 vs. 0.608). Replacing the primary endpoint with the secondary CV-endpoint just changed the outcome slightly (log-rank 0.0976), possibly due to a low number of CV-deaths within the CV-event. Compared to participants without PD, the presence of PD at baseline was associated with the primary endpoint in the total cohort (Odds Ratio (OR): 1.49; 95% Confidence Interval (CI): 1.11–2.00) as well as the CV-endpoint (OR 1.42; 95% CI 1.02–1.98). PD was not associated with total mortality (OR 1.57; 95% CI 0.97–2.56).
Conclusion
In this up to 8-years follow up of the PAROKRANK cohort there was a graded increase in the risk for new CV-events by the presence of PD. This was in particular seen in the MI-patients. Together with the previous case-control based report from PAROKRANK, on an association between PD and a first MI, the findings during the follow-up supports the assumption that there may be a causal relationship between PD and CV-disease.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): The PAROKRANK study was supported by grants from AFA Insurance, Swedish Heart-Lung Foundation, Swedish Research Council, Swedish Society of Medicine, Stockholm County Council (ALF project and Steering committee KI/SLL for odontological research), and The Baltic Child Foundation. Figure 1
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Affiliation(s)
- G Ferrannini
- Karolinska Institute, Medicine, Stockholm, Sweden
| | - A Norhammar
- Karolinska Institute, Medicine, Stockholm, Sweden
| | - M Almosawi
- Karolinska Institute, Medicine, Stockholm, Sweden
| | - B Kjellstrom
- Karolinska Institute, Medicine, Stockholm, Sweden
| | - K Buhlin
- Karolinska Institute, Dental Medicine, Stockholm, Sweden
| | - U De Faire
- Karolinska Institutet, Institute of Environmental Medicine, Stockholm, Sweden
| | - A Gustafsson
- Karolinska Institute, Dental Medicine, Stockholm, Sweden
| | - L A Nygren
- Karolinska Institute, Clinical Sciences Danderyd's Hospital, Stockholm, Sweden
| | - P Nasman
- Royal Institute of Technology, Center for Safety Research, Stockholm, Sweden
| | - B Lindahl
- Uppsala University, Medical Sciences, Uppsala, Sweden
| | - U Naslund
- Umea University, Department of Public Health and Clinical Medicine, Umea, Sweden
| | | | - B Klinge
- Karolinska Institute, Dental Medicine, Stockholm, Sweden
| | - L Ryden
- Karolinska Institute, Medicine, Stockholm, Sweden
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20
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Almosawi M, Ferrannini G, Buhlin K, Gustafsson A, Kjellstrom B, Klinge B, Nygren Å, Nasman P, Svenungsson E, Ryden L, Norhammar A. Long term outcome after a first myocardial infarction. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Prognosis after a myocardial infarction (MI) have improved consistently over the last decades. In parallel, the incidence of cardiovascular (CV) events has been reduced and life expectancy in people free from CV disease improved.
Purpose
To explore the long-term mortality and burden of cardiovascular disease in patients after a first MI compared to matched controls in a contemporary setting.
Methods
The Swedish case-control study PAROKRANK recruited 805 patients <75 years with a first MI and 805 age-, gender- and area-matched controls from 2010 to 2014. All participants were followed by means of registry-based information. The primary endpoint was the first of a composite of all-cause death, non-fatal MI, non-fatal stroke and heart failure hospitalization. Data on the outcomes were provided via linkage to the National Patient Registries and the Cause of Death Registry. Hazard Ratios (HR) for the first composite event were calculated by means of a Cox regression model, subsequently adjusted for smoking, education level and marital status at baseline. Event curves for the time-to-first event in patients and controls were computed by Kaplan-Meier curves and the two groups were compared by means of the log-rank test.
Results
Data from 804 patients and 800 controls (mean age in both groups 62 years; women 19%) were complete for an average period of 6.2 years (0.2–8.5 years). The total number of events was 211. Patients had a higher event rate than controls (log rank p<0.0001). Unadjusted HR for the primary outcome was 2.08 (95% confidence interval (CI) 1.56–2.77) while the adjusted HR was 2.04 (95% CI 1.52–2.73). Mortality did not differ significantly between patients (n=38; 4.7%) and controls (n=35; 4.4%). In total, 82.5% of the patients and 91.3% of the controls were event-free during follow-up.
Conclusion
This long-term follow-up of a contemporary, nationwide case-control cohort illustrates that the likelihood for CV events is higher in patients with a first MI compared to their matched controls while mortality did not differ. The access to high quality of care and cardiac rehabilitation might explain the low rates of adverse outcomes.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): AFA Insurance, Swedish Heart-Lung Foundation, Swedish Research Council, Swedish Society of Medicine, Stockholm County Council (ALF project and Steering committee KI/SLL for odontological research), and The Baltic Child Foundation. Figure 1. Kaplan-Meier curves
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Affiliation(s)
- M Almosawi
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
| | - G Ferrannini
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
| | - K Buhlin
- Karolinska Institutet, Dental Medicine, Stockholm, Sweden
| | - A Gustafsson
- Karolinska Institutet, Dental Medicine, Stockholm, Sweden
| | - B Kjellstrom
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
| | - B Klinge
- Karolinska Institutet, Dental Medicine, Stockholm, Sweden
| | - Å Nygren
- Karolinska Institutet, Clinical Sciences, Stockholm, Sweden
| | - P Nasman
- Royal Institute of Technology, Center for Safety Research, Stockholm, Sweden
| | - E Svenungsson
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
| | - L Ryden
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
| | - A Norhammar
- Karolinska Institutet, Medicine K2, Stockholm, Sweden
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21
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Gustafsson A, Garre E, Leiva MC, Salerno S, Ståhlberg A, Landberg G. Patient-derived scaffolds as a drug-testing platform for endocrine therapies in breast cancer. Sci Rep 2021; 11:13334. [PMID: 34172801 PMCID: PMC8233392 DOI: 10.1038/s41598-021-92724-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/08/2021] [Indexed: 12/26/2022] Open
Abstract
Three-dimensional cell culture platforms based on decellularised patient-based microenvironments provide in vivo-like growth conditions allowing cancer cells to interact with intact structures and components of the surrounding tissue. A patient-derived scaffold (PDS) model was therefore evaluated as a testing platform for the endocrine therapies (Z)-4-Hydroxytamoxifen (4OHT) and fulvestrant as well as the CDK4/6-inhibitor palbociclib, monitoring the treatment responses in breast cancer cell lines MCF7 and T47D adapted to the patient-based microenvironments. MCF7 cells growing in PDSs showed increased resistance to 4OHT and fulvestrant treatment (100- and 20-fold) compared to 2D cultures. Quantitative PCR analyses of endocrine treated cancer cells in PDSs revealed upregulation of pluripotency markers further supported by increased self-renewal capacity in sphere formation assays. When comparing different 3D growth platforms including PDS, matrigel, gelatin sponges and 3D-printed hydrogels, 3D based cultures showed slightly varying responses to fulvestrant and palbociclib whereas PDS and matrigel cultures showed more similar gene expression profiles for 4OHT treatment compared to the other platforms. The results support that the PDS technique maximized to provide a multitude of smaller functional PDS replicates from each primary breast cancer, is an up-scalable patient-derived drug-testing platform available for gene expression profiling and downstream functional assays.
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Affiliation(s)
- Anna Gustafsson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Elena Garre
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Maria Carmen Leiva
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Simona Salerno
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden
| | - Anders Ståhlberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden.,Wallenberg Center for Molecular and Translational Medicine, University of Gothenburg, 41390, Gothenburg, Sweden.,Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, 41390, Gothenburg, Sweden
| | - Göran Landberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Center for Cancer Research, University of Gothenburg, 41390, Gothenburg, Sweden.
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22
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Henrick BM, Rodriguez L, Lakshmikanth T, Pou C, Henckel E, Arzoomand A, Olin A, Wang J, Mikes J, Tan Z, Chen Y, Ehrlich AM, Bernhardsson AK, Mugabo CH, Ambrosiani Y, Gustafsson A, Chew S, Brown HK, Prambs J, Bohlin K, Mitchell RD, Underwood MA, Smilowitz JT, German JB, Frese SA, Brodin P. Bifidobacteria-mediated immune system imprinting early in life. Cell 2021; 184:3884-3898.e11. [PMID: 34143954 DOI: 10.1016/j.cell.2021.05.030] [Citation(s) in RCA: 266] [Impact Index Per Article: 88.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/19/2021] [Accepted: 05/19/2021] [Indexed: 02/08/2023]
Abstract
Immune-microbe interactions early in life influence the risk of allergies, asthma, and other inflammatory diseases. Breastfeeding guides healthier immune-microbe relationships by providing nutrients to specialized microbes that in turn benefit the host's immune system. Such bacteria have co-evolved with humans but are now increasingly rare in modern societies. Here we show that a lack of bifidobacteria, and in particular depletion of genes required for human milk oligosaccharide (HMO) utilization from the metagenome, is associated with systemic inflammation and immune dysregulation early in life. In breastfed infants given Bifidobacterium infantis EVC001, which expresses all HMO-utilization genes, intestinal T helper 2 (Th2) and Th17 cytokines were silenced and interferon β (IFNβ) was induced. Fecal water from EVC001-supplemented infants contains abundant indolelactate and B. infantis-derived indole-3-lactic acid (ILA) upregulated immunoregulatory galectin-1 in Th2 and Th17 cells during polarization, providing a functional link between beneficial microbes and immunoregulation during the first months of life.
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Affiliation(s)
- Bethany M Henrick
- Evolve BioSystems, Inc., Davis, CA 95618, USA; Department of Food Science and Technology, University of Nebraska, Lincoln, Lincoln, NE 68588-6205, USA.
| | - Lucie Rodriguez
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Tadepally Lakshmikanth
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Christian Pou
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Ewa Henckel
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden; Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Stockholm, Sweden; Department of Neonatology, Karolinska University Hospital, 14186 Stockholm, Sweden
| | - Aron Arzoomand
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Axel Olin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Jun Wang
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Jaromir Mikes
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Ziyang Tan
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Yang Chen
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | | | - Anna Karin Bernhardsson
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Constantin Habimana Mugabo
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden
| | - Ylva Ambrosiani
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Anna Gustafsson
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Stockholm, Sweden; Department of Neonatology, Karolinska University Hospital, 14186 Stockholm, Sweden
| | | | | | | | - Kajsa Bohlin
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Stockholm, Sweden; Department of Neonatology, Karolinska University Hospital, 14186 Stockholm, Sweden
| | | | - Mark A Underwood
- Foods for Health Institute, University of California, Davis, Davis, CA 95616, USA; Department of Pediatrics, University of California Davis Children's Hospital, Sacramento, CA 95817, USA
| | - Jennifer T Smilowitz
- Foods for Health Institute, University of California, Davis, Davis, CA 95616, USA; Department of Food Science and Technology, University of California, Davis, Davis, CA 95616, USA
| | - J Bruce German
- Foods for Health Institute, University of California, Davis, Davis, CA 95616, USA; Department of Food Science and Technology, University of California, Davis, Davis, CA 95616, USA
| | - Steven A Frese
- Department of Food Science and Technology, University of Nebraska, Lincoln, Lincoln, NE 68588-6205, USA; Department of Nutrition, University of Nevada, Reno, Reno, NV 89557, USA
| | - Petter Brodin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17121 Solna, Sweden; Pediatric Rheumatology, Karolinska University Hospital, 17176 Solna, Sweden.
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23
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Persson E, Gregersson P, Gustafsson A, Fitzpatrick P, Rhost S, Ståhlberg A, Landberg G. Patient-derived scaffolds influence secretion profiles in cancer cells mirroring clinical features and breast cancer subtypes. Cell Commun Signal 2021; 19:66. [PMID: 34090457 PMCID: PMC8178857 DOI: 10.1186/s12964-021-00746-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 11/09/2020] [Accepted: 04/27/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Breast cancer is a common malignancy with varying clinical behaviors and for the more aggressive subtypes, novel and more efficient therapeutic approaches are needed. Qualities of the tumor microenvironment as well as cancer cell secretion have independently been associated with malignant clinical behaviors and a better understanding of the interplay between these two features could potentially reveal novel targetable key events linked to cancer progression. METHODS A newly developed human derived in vivo-like growth system, consisting of decellularized patient-derived scaffolds (PDSs) recellularized with standardized breast cancer cell lines (MCF7 and MDA-MB-231), were used to analyze how 63 individual patient specific microenvironments influenced secretion determined by proximity extension assays including 184 proteins and how these relate to clinical outcome. RESULTS The secretome from cancer cells in PDS cultures varied distinctly from cells grown as standard monolayers and besides a general increase in secretion from PDS cultures, several secreted proteins were only detectable in PDSs. Monolayer cells treated with conditioned media from PDS cultures, further showed increased mammosphere formation demonstrating a cancer stem cell activating function of the PDS culture induced secretion. The detailed secretomic profiles from MCF7s growing on 57 individual PDSs differed markedly but unsupervised clustering generated three separate groups having similar secretion profiles that significantly correlated to different clinical behaviors. The secretomic profile that associated with cancer relapse and high grade breast cancer showed induced secretion of the proteins IL-6, CCL2 and PAI-1, all linked to cancer stem cell activation, metastasis and priming of the pre-metastatic niche. Cancer promoting pathways such as "Suppress tumor immunity" and "Vascular and tissue remodeling" was also linked to this more malignant secretion cluster. CONCLUSION PDSs repopulated with cancer cells can be used to assess how cancer secretion is effected by specific and varying microenvironments. More malignant secretion patterns induced by specific patient based cancer microenvironments could further be identified pinpointing novel therapeutic opportunities targeting micro environmentally induced cancer progression via secretion of potent cytokines. Video abstract.
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Affiliation(s)
- Emma Persson
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden
| | - Pernilla Gregersson
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden
| | - Paul Fitzpatrick
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden
| | - Sara Rhost
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden
| | - Anders Ståhlberg
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden.,Wallenberg Center for Molecular and Translational Medicine, University of Gothenburg, 41390, Gothenburg, Sweden.,Department of Clinical Genetics and Genomics, Sahlgrenska University Hostpital, Region Västra Götaland, 41390, Gothenburg, Sweden
| | - Göran Landberg
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Medicinaregatan 1G, 41390, Gothenburg, Sweden.
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24
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Kok J, Grassi L, Gustafsson A, Isaksson H. Femoral strength and strains in sideways fall: Validation of finite element models against bilateral strain measurements. J Biomech 2021; 122:110445. [PMID: 33933857 DOI: 10.1016/j.jbiomech.2021.110445] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 05/07/2020] [Revised: 02/15/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
Low impact falls to the side are the main cause of hip fractures in elderly. Finite element (FE) models of the proximal femur may help in the assessment of patients at high risk for a hip fracture. However, extensive validation is essential before these models can be used in a clinical setting. This study aims to use strain measurements from bilateral digital image correlation to validate an FE model against ex vivo experimental data of proximal femora under a sideways fall loading condition. For twelve subjects, full-field strain measurements were available on the medial and lateral side of the femoral neck. In this study, subject-specific FE models were generated based on a consolidated procedure previously validated for stance loading. The material description included strain rate dependency and separate yield and fracture strain limits in tension and compression. FE predicted fracture force and experimentally measured peak forces showed a strong correlation (R2 = 0.92). The FE simulations predicted the fracture initiation within 3 mm distance of the experimental fracture line for 8/12 subjects. The predicted and measured strains correlated well on both the medial side (R2 = 0.87) and the lateral side (R2 = 0.74). The lower correlation on the lateral side is attributed to the irregularity of the cortex and presence of vessel holes in this region. The combined validation against bilateral full-field strain measurements and peak forces has opened the door for a more elaborate qualitative and quantitative validation of FE models of femora under sideways fall loading.
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Affiliation(s)
- Joeri Kok
- Department of Biomedical Engineering, Lund University, Sweden.
| | - Lorenzo Grassi
- Department of Biomedical Engineering, Lund University, Sweden
| | - Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Sweden
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25
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Gustafsson A. Montgomery, Mary. 2019. Hired daughters: domestic workers among ordinary Moroccans. Bloomington, IN: Indiana University Press. 276 pp. Hb.: US£80.00. ISBN: 9780253041005. Soc Anthropol 2021. [DOI: 10.1111/1469-8676.12946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Leiva MC, Garre E, Gustafsson A, Svanström A, Bogestål Y, Håkansson J, Ståhlberg A, Landberg G. Breast cancer patient-derived scaffolds as a tool to monitor chemotherapy responses in human tumor microenvironments. J Cell Physiol 2020; 236:4709-4724. [PMID: 33368325 PMCID: PMC8049042 DOI: 10.1002/jcp.30191] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 08/11/2020] [Revised: 11/04/2020] [Accepted: 11/20/2020] [Indexed: 12/21/2022]
Abstract
Breast cancer is a heterogeneous disease where the tumor microenvironment, including extracellular components, plays a crucial role in tumor progression, potentially modulating treatment response. Different approaches have been used to develop three‐dimensional models able to recapitulate the complexity of the extracellular matrix. Here, we use cell‐free patient‐derived scaffolds (PDSs) generated from breast cancer samples that were recellularized with cancer cell lines as an in vivo‐like culture system for drug testing. We show that PDS cultured MCF7 cancer cells increased their resistance against the front‐line chemotherapy drugs 5‐fluorouracil, doxorubicin and paclitaxel in comparison to traditional two‐dimensional cell cultures. The gene expression of the environmentally adapted cancer cells was modulated in different ways depending on the drug and the concentration used. High doses of doxorubicin reduced cancer stem cell features, whereas 5‐fluorouracil increased stemness and decreased the proliferative phenotype. By using PDSs repopulated with other breast cancer cell lines, T‐47D and MDA‐MB‐231, we observed both general and cell line specific drug responses. In summary, PDSs can be used to examine the extracellular matrix influence on cancer drug responses and for testing novel compounds in in vivo‐like microenvironments.
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Affiliation(s)
- Maria Carmen Leiva
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Elena Garre
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Andreas Svanström
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Yalda Bogestål
- Department of Biological Function, RISE Research Institutes of Sweden, Borås, Sweden
| | - Joakim Håkansson
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Biological Function, RISE Research Institutes of Sweden, Borås, Sweden
| | - Anders Ståhlberg
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Wallenberg Center for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Landberg
- Department of Laboratory Medicine, Sahlgrenska Center for Cancer Research, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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27
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Gustafsson A, Wallin M, Isaksson H. The influence of microstructure on crack propagation in cortical bone at the mesoscale. J Biomech 2020; 112:110020. [PMID: 32980752 DOI: 10.1016/j.jbiomech.2020.110020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 01/24/2020] [Revised: 05/26/2020] [Accepted: 08/26/2020] [Indexed: 10/23/2022]
Abstract
The microstructure of cortical bone is key for the tissue's high toughness and strength and efficient toughening mechanisms have been identified at the microscale, for example when propagating cracks interact with the osteonal microstructure. Finite element models have been proposed as suitable tools for analyzing the complex link between the local tissue structure and the fracture resistance of cortical bone. However, previous models that could capture realistic crack paths in cortical bone were due to the required computational effort limited to idealized osteon geometries and small (<1 mm2) model domains. The objective of this study was therefore to bridge the gap between experimental and numerical analysis of crack propagation in cortical bone by introducing image-based models at the mesoscale. Tissue orientation maps from high-resolution micro-CT images were used to define the distribution and orientation of weak interfaces in the models. Crack propagation was simulated using the extended finite element method in combination with an interface damage model, previously developed to simulate crack propagation in microstructural osteon models. The results showed that image-based mesoscale models can be used to capture interactions between cracks and microstructure. The simulated crack paths predicted the general trends seen in experiments with more irregular patterns for cracks propagating perpendicular compared to parallel to the osteon orientation. In all, the proposed method enabled an efficient description of the tissue level microstructure, which is a necessity to predict realistic crack paths in cortical bone and is an important step towards simulating crack propagation in bone models in 3D.
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Affiliation(s)
- Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Mathias Wallin
- Division of Solid Mechanics, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
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28
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Landberg G, Jonasson E, Gustafsson A, Fitzpatrick P, Isakson P, Karlsson J, Larsson E, Svanström A, Rafnsdottir S, Persson E, Andersson D, Rosendahl J, Petronis S, Ranji P, Gregersson P, Magnusson Y, Håkansson J, Ståhlberg A. Characterization of cell-free breast cancer patient-derived scaffolds using liquid chromatography-mass spectrometry/mass spectrometry data and RNA sequencing data. Data Brief 2020; 31:105860. [PMID: 32637480 PMCID: PMC7327418 DOI: 10.1016/j.dib.2020.105860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 05/15/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 11/25/2022] Open
Abstract
Patient-derived scaffolds (PDSs) generated from primary breast cancer tumors can be used to model the tumor microenvironment in vitro. Patient-derived scaffolds are generated by repeated detergent washing, removing all cells. Here, we analyzed the protein composition of 15 decellularized PDSs using liquid chromatography-mass spectrometry/mass spectrometry. One hundred forty-three proteins were detected and their relative abundance was calculated using a reference sample generated from all PDSs. We performed heatmap analysis of all the detected proteins to display their expression patterns across different PDSs together with pathway enrichment analysis to reveal which processes that were connected to PDS protein composition. This protein dataset together with clinical information is useful to investigators studying the microenvironment of breast cancers. Further, after repopulating PDSs with either MCF7 or MDA-MB-231 cells, we quantified their gene expression profiles using RNA sequencing. These data were also compared to cells cultured in conventional 2D conditions, as well as to cells cultured as xenografts in immune-deficient mice. We investigated the overlap of genes regulated between these different culture conditions and performed pathway enrichment analysis of genes regulated by both PDS and xenograft cultures compared to 2D in both cell lines to describe common processes associated with both culture conditions. Apart from our described analyses of these systems, these data are useful when comparing different experimental model systems. Downstream data analyses and interpretations can be found in the research article “Patient-derived scaffolds uncover breast cancer promoting properties of the microenvironment” [1].
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Affiliation(s)
- Göran Landberg
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Emma Jonasson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Paul Fitzpatrick
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Pauline Isakson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Joakim Karlsson
- Department of Medical Biochemistry and Cell biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Erik Larsson
- Department of Medical Biochemistry and Cell biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Andreas Svanström
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Svanheidur Rafnsdottir
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Emma Persson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Daniel Andersson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Jennifer Rosendahl
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE- 50115 Borås, Sweden
| | - Sarunas Petronis
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE- 50115 Borås, Sweden
| | - Parmida Ranji
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Pernilla Gregersson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Ylva Magnusson
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden
| | - Joakim Håkansson
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE- 50115 Borås, Sweden
| | - Anders Ståhlberg
- Department of Laboratory medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390 Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, SE-41390 Gothenburg, Sweden.,Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, SE-41390 Gothenburg, Sweden
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Pojskic H, McGawley K, Gustafsson A, Behm DG. The Reliability and Validity of a Novel Sport-Specific Balance Test to Differentiate Performance Levels in Elite Curling Players. J Sports Sci Med 2020; 19:337-346. [PMID: 32390727 PMCID: PMC7196740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/26/2020] [Indexed: 06/11/2023]
Abstract
Balance as a skill and task-specific capacity is considered an essential physical quality in curling, required for executing effective stone delivery. However, no testing protocols have been developed to test curling-specific balance in the delivery position. Thus, the primary aim of this study was to investigate the reliability, validity and usefulness of a newly-developed, curling-specific balance test (CSBT) which involved the delivery position. The secondary aim was to examine the differences between elite and sub-elite curlers for core strength and flexibility, which have previously been identified as important qualities in curling and determinants of balance. Twenty curling players (13 females aged 19 ± 3.1 years; 7 males aged 19.6 ± 2.3 years) from five Swedish super-league curling clubs were divided into two groups according to playing level: elite and sub-elite. Variables included body mass, body height, body mass index, age, playing experience, training frequency, plank test, sit and reach test, standing single-leg balance test (SLBT) and CSBT. The CSBT was executed on a multiaxial tilting balance plate while mimicking the curling delivery position (i.e., a deep lunge position with the front foot on the plate). The participants completed the CSBT on three separate occasions, with each test consisting of three, 20-s attempts. Both the relative and absolute reliability were good for the CSBT (ICC = 0.90; CV = 14.5%). The CSBT demonstrated good measurement usefulness, being sensitive to detect moderate changes that exceeded 0.5 times the test standard deviation. Construct validity of the CSBT was evidenced by the large discriminatory capacity to differentiate expertise level in curling players (t-test: 2.85, p < 0.01; large ES), irrespective of other physical capacities (e.g., flexibility and core strength). However, the elite and sub-elite players also differed in age, playing experience and training frequency. Content validity was confirmed by a weak correlation (r = 0.21; 95%CI: -0.26 to 0.60) between the CSBT and SLBT, which suggests that curling-specific and standing balance should be considered as independent and task-specific motor skills. In conclusion, the CSBT can be used as a reliable, valid and useful tool for the assessment of curling-specific balance performance. In addition, longer and more extensive involvement in curling training contributed to superior specific balance in elite curlers.
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Affiliation(s)
- Haris Pojskic
- Department of Sports Science, Linnaeus University, Kalmar, Sweden
| | - Kerry McGawley
- The Swedish Winter Sports Research Centre, Department for Health Sciences, Mid Sweden University, Östersund, Sweden
| | - Anna Gustafsson
- The Swedish Winter Sports Research Centre, Department for Health Sciences, Mid Sweden University, Östersund, Sweden
| | - David G Behm
- School of Human Kinetics and Recreation, Memorial University of Newfoundland, Canada
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Grassi L, Kok J, Gustafsson A, Zheng Y, Väänänen SP, Jurvelin JS, Isaksson H. Elucidating failure mechanisms in human femurs during a fall to the side using bilateral digital image correlation. J Biomech 2020; 106:109826. [DOI: 10.1016/j.jbiomech.2020.109826] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/22/2020] [Accepted: 05/05/2020] [Indexed: 02/07/2023]
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Garre E, Gustafsson A, del Carmen Leiva-Arrabal M, Fitzpatrick P, Gregersson P, Ståhlberg A, Landberg G. Abstract P1-04-01: Breast cancer patient derived scaffolds as a platform for studying cancer promoting properties of the microenvironment. Cancer Res 2020. [DOI: 10.1158/1538-7445.sabcs19-p1-04-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Despite great efficiencies of today’s anti-cancer therapies in breast cancer medicine, recurrences and metastasis still remains a major challenge. The tumor initiating population of cancer stem cells (CSC) is believed to promote metastasis and drug resistance, suggesting that selectively targeting CSC and their niche may be a potential beneficial therapeutic strategy. However, specific driving factors in the microenvironment influencing the CSC niche remains unknown. To study the influence of specific cancer microenvironments, we have developed a novel three-dimensional cell culture platform, using cell-free patient derived scaffolds (PDS) from decellularized breast cancer tumors. We confirmed that our novel patient derived scaffold (PDS) recapitulates the native microenvironment where the cancer cells originate and, retains their biological properties. Our data demonstrate that culturing breast cancer cell lines in PDSs promotes CSC and EMT-like properties and decreases proliferation, similarly to in vivo conditions. Additionally, global gene expression profiling revealed that PDS cultures exhibit transcriptional patterns more similar to patient derived xenografts than to traditional monolayer cultures. Moreover, we analyzed the expression of cells cultured in 108 PDSs made from breast cancer tumors with clinical follow-up data, using a gene panel representative of relevant breast cancer related processes. This revealed that expression changes of several EMT markers and other CSC related genes in the PDS cultured cancer cells were correlated to clinical parameters such as grade, lymph node metastasis, patient survival and disease recurrences. Altogether, our data shows that PDS can reveal unique additional information about the malignancy-inducing properties of specific tumor microenvironments, potentially provides a complementary diagnosis tool for breast cancer tumors in vitro, and is a promising platform for drug screening of anti-cancer therapies.
Citation Format: Elena Garre, Anna Gustafsson, Maria del Carmen Leiva-Arrabal, Paul Fitzpatrick, Pernilla Gregersson, Anders Ståhlberg, Göran Landberg. Breast cancer patient derived scaffolds as a platform for studying cancer promoting properties of the microenvironment [abstract]. In: Proceedings of the 2019 San Antonio Breast Cancer Symposium; 2019 Dec 10-14; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2020;80(4 Suppl):Abstract nr P1-04-01.
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Affiliation(s)
- Elena Garre
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Anna Gustafsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | | | - Paul Fitzpatrick
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Pernilla Gregersson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Anders Ståhlberg
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Göran Landberg
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
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Persson E, Gregersson P, Fitzpatrick P, Gustafsson A, Ståhlberg A, Landberg G. Abstract P6-06-14: Analysis of secreted proteome in an in vivo like human 3D model of breast cancer. Cancer Res 2020. [DOI: 10.1158/1538-7445.sabcs19-p6-06-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Breast cancer is the most common form of cancer amongst women and affects millions worldwide each year. The tumor micro environment plays a key role in cancer progression and disease outcome of which a highly important factor is the secreted proteome which includes cytokines, chemokines and other proteins. Cancer cells influence neighboring cells by both autocrine and paracrine secretion which affects cancer cell characteristics such as stem-like properties, proliferation and metastatic capacity. Due to the importance of cancer cell signaling and cell to cell communication, when studying the cancer cell secretome in a three-dimensional environment new signaling pathways and new possible drug targets can be investigated.
Methods: To understand the complexity of breast cancer cell secretion, the human in vivo like system patient derived scaffolds (PDS) was used as a modeling system whereby patient specific extracellular matrix mediated cellular secretion in both ERα+ and ERα- cell lines were investigated. 54 human breast cancer tumors were decellularized and the PDS were repopulated with either MCF7 or MDA-MB-231 cells. Cell lines were grown on scaffolds for 21 days. At day 16 cell media was changed and at day 21 conditioned media was collected for secretome analysis. Multiplex Proximity Extension Assay (OLINK, Uppsala Sweden) was performed on conditioned media and 184 proteins were analyzed for each sample.
Results: The secretome from cells grown in PDS culture differs distinctly from the secretome from cells cultured in standard monolayer cultures, both in numbers and amount of secreted proteins. Secreted proteins from cells grown in PDS cultures were also shown to increase the cancer stem cell population compared to secretome from cells cultivated in monolayer culture. By comparing secretomic profiles from MCF7 cells grown in 54 PDSs, three clusters were created with an unsupervised clustering method. When these three clusters were correlated to clinical information about the specific tumors in each cluster, patients in one of the clusters were found to have a significantly lower chance of relapse-free survival and a higher frequency of high-grade tumors. Further, cells grown in PDS from this cluster also showed a different genetic profile with increased expression of markers related to epithelial-mesenchymal transition.
Conclusion: Breast cancer cells grown in a three-dimensional in vivo-like model have a distinct different secretomic profile compare to monolayer cultured cells and the secretion can be related to the original characteristics of the breast tumor. This highlights the importance of the tumor microenvironment induced secretion and the possibility to target secreted proteins as a therapeutic strategy.
Citation Format: Emma Persson, Pernilla Gregersson, Paul Fitzpatrick, Anna Gustafsson, Anders Ståhlberg, Göran Landberg. Analysis of secreted proteome in an in vivo like human 3D model of breast cancer [abstract]. In: Proceedings of the 2019 San Antonio Breast Cancer Symposium; 2019 Dec 10-14; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2020;80(4 Suppl):Abstract nr P6-06-14.
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Affiliation(s)
- Emma Persson
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Pernilla Gregersson
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Paul Fitzpatrick
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Anna Gustafsson
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Anders Ståhlberg
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Göran Landberg
- 1Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
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Wackernagel D, Gustafsson A, Edstedt Bonamy A, Reims A, Ahlsson F, Elfving M, Domellöf M, Hansen Pupp I. Swedish national guideline for prevention and treatment of neonatal hypoglycaemia in newborn infants with gestational age ≥35 weeks. Acta Paediatr 2020; 109:31-44. [PMID: 31350926 DOI: 10.1111/apa.14955] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 05/18/2019] [Accepted: 07/25/2019] [Indexed: 01/22/2023]
Abstract
AIM Postnatal hypoglycaemia in newborn infants remains an important clinical problem where prolonged periods of hypoglycaemia are associated with poor neurodevelopmental outcome. The aim was to develop an evidence-based national guideline with the purpose to optimise prevention, diagnosis and treatment of hypoglycaemia in newborn infants with a gestational age ≥35 + 0 weeks. METHODS A PubMed search-based literature review was used to find actual and applicable evidence for all incorporated recommendations. The GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach was used for grading the evidence of the recommendations. RESULTS Recommendations for the prevention of neonatal hypoglycaemia were extended and updated, focusing on promotion of breastfeeding as one prevention strategy. Oral dextrose gel as a novel supplemental therapy was incorporated in the treatment protocol. A new threshold-based screening and treatment protocol presented as a flow chart was developed. CONCLUSION An updated and evidence-based national guideline for screening and treatment of neonatal hypoglycaemia will support standardised regimes, which may prevent hypoglycaemia and the risk for hypoglycaemia-related long-term sequelae.
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Affiliation(s)
- Dirk Wackernagel
- Karolinska University Hospital and Karolinska Institutet Stockholm Sweden
| | - Anna Gustafsson
- Karolinska University Hospital and Karolinska Institutet Stockholm Sweden
| | | | - Annika Reims
- Queen Silvia Children's Hospital Gothenburg Sweden
| | - Fredrik Ahlsson
- Uppsala University Children's hospital and Department of Women's and Children's Health Uppsala University Uppsala Sweden
| | - Maria Elfving
- Department of Clinical Sciences Lund, Pediatrics Skane University Hospital Lund University Lund Sweden
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Landberg G, Fitzpatrick P, Isakson P, Jonasson E, Karlsson J, Larsson E, Svanström A, Rafnsdottir S, Persson E, Gustafsson A, Andersson D, Rosendahl J, Petronis S, Ranji P, Gregersson P, Magnusson Y, Håkansson J, Ståhlberg A. Patient-derived scaffolds uncover breast cancer promoting properties of the microenvironment. Biomaterials 2019; 235:119705. [PMID: 31978840 DOI: 10.1016/j.biomaterials.2019.119705] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 04/29/2019] [Revised: 11/26/2019] [Accepted: 12/18/2019] [Indexed: 12/15/2022]
Abstract
Tumor cells interact with the microenvironment that specifically supports and promotes tumor development. Key components in the tumor environment have been linked to various aggressive cancer features and can further influence the presence of subpopulations of cancer cells with specific functions, including cancer stem cells and migratory cells. To model and further understand the influence of specific microenvironments we have developed an experimental platform using cell-free patient-derived scaffolds (PDSs) from primary breast cancers infiltrated with standardized breast cancer cell lines. This PDS culture system induced a series of orchestrated changes in differentiation, epithelial-mesenchymal transition, stemness and proliferation of the cancer cell population, where an increased cancer stem cell pool was confirmed using functional assays. Furthermore, global gene expression profiling showed that PDS cultures were similar to xenograft cultures. Mass spectrometry analyses of cell-free PDSs identified subgroups based on their protein composition that were linked to clinical properties, including tumor grade. Finally, we observed that an induction of epithelial-mesenchymal transition-related genes in cancer cells growing on the PDSs were significantly associated with clinical disease recurrences in breast cancer patients. Patient-derived scaffolds thus mimics in vivo-like growth conditions and uncovers unique information about the malignancy-inducing properties of tumor microenvironment.
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Affiliation(s)
- Göran Landberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden.
| | - Paul Fitzpatrick
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Pauline Isakson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Emma Jonasson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Joakim Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Erik Larsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Andreas Svanström
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Svanheidur Rafnsdottir
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Emma Persson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Daniel Andersson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Jennifer Rosendahl
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE-50115, Borås, Sweden
| | - Sarunas Petronis
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE-50115, Borås, Sweden
| | - Parmida Ranji
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Pernilla Gregersson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Ylva Magnusson
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden
| | - Joakim Håkansson
- RISE, Research Institutes of Sweden, Bioscience and Materials - Medical Device Technology, SE-50115, Borås, Sweden
| | - Anders Ståhlberg
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, Sahlgrenska Cancer Center, University of Gothenburg, SE-41390, Gothenburg, Sweden; Wallenberg Center for Molecular and Translational Medicine, University of Gothenburg, SE-41390, Gothenburg, Sweden; Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, SE-41390, Gothenburg, Sweden.
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Gustafsson N, Ahlqvist J, Näslund U, Buhlin K, Gustafsson A, Kjellström B, Klinge B, Rydén L, Levring Jäghagen E. Associations among Periodontitis, Calcified Carotid Artery Atheromas, and Risk of Myocardial Infarction. J Dent Res 2019; 99:60-68. [DOI: 10.1177/0022034519885362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cardiovascular disease is a common cause of morbidity and premature mortality. Cardiovascular disease can be prevented when risk factors are identified early. Calcified carotid artery atheromas (CCAAs), detected in panoramic radiographs, and periodontitis have both been associated with increased risk of cardiovascular disease. This case-control study aimed to 1) investigate associations between periodontitis and CCAA detected in panoramic radiographs and 2) determine the risk of future myocardial infarctions due to CCAA combined with periodontitis. We evaluated 1,482 participants (738 cases and 744 controls) with periodontitis and CCAAs recruited from the PAROKRANK study (Periodontitis and Its Relation to Coronary Artery Disease). Participants were examined with panoramic radiographs, including the carotid regions. Associations between myocardial infarction and periodontitis combined with CCAA were evaluated in 696 cases and 696 age-, sex-, and residential area–matched controls. Periodontitis was evaluated radiographically (as degree of bone loss) and with a clinical periodontal disease index score (from clinical and radiographic assessments). We found associations between CCAA and clinical periodontal disease index score among cases (odds ratio [OR], 1.51; 95% CI, 1.09 to 2.10; P = 0.02) and controls (OR, 1.70; 95% CI, 1.22 to 2.38; P < 0.01), although not between CCAA and the degree of bone loss. In a multivariable model, myocardial infarction was associated with CCAA combined with periodontitis, as assessed by degree of bone loss (OR, 1.75; 95% CI, 1.11 to 2.74; P = 0.01). When the cohort was stratified by sex, only men showed a significant association between myocardial infarction and CCAA combined with periodontitis. Participants with clinically diagnosed periodontitis exhibited CCAA in panoramic radiographs more often than those without periodontitis, irrespective of the presence of a recent myocardial infarction. Participants with combined periodontitis and CCAA had a higher risk of having had myocardial infarction as compared with participants with either condition alone. These findings implied that patients in dental care might benefit from dentists assessing panoramic radiographs for CCAA—particularly, patients with periodontitis who have not received any preventive measures for cardiovascular disease.
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Affiliation(s)
- N. Gustafsson
- Oral and Maxillofacial Radiology, Department of Odontology, Umeå University, Umeå, Sweden
| | - J. Ahlqvist
- Oral and Maxillofacial Radiology, Department of Odontology, Umeå University, Umeå, Sweden
| | - U. Näslund
- Heart Centre, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - K. Buhlin
- Periodontology, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - A. Gustafsson
- Periodontology, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - B. Kjellström
- Cardiology Unit, Department of Medicine K2, Karolinska Institutet, Stockholm, Sweden
| | - B. Klinge
- Periodontology, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Periodontology, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - L. Rydén
- Cardiology Unit, Department of Medicine K2, Karolinska Institutet, Stockholm, Sweden
| | - E. Levring Jäghagen
- Oral and Maxillofacial Radiology, Department of Odontology, Umeå University, Umeå, Sweden
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Gustafsson A, Wallin M, Isaksson H. Age-related properties at the microscale affect crack propagation in cortical bone. J Biomech 2019; 95:109326. [DOI: 10.1016/j.jbiomech.2019.109326] [Citation(s) in RCA: 15] [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: 06/24/2019] [Revised: 08/23/2019] [Accepted: 08/25/2019] [Indexed: 01/11/2023]
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Gustafsson A, Wallin M, Khayyeri H, Isaksson H. Crack propagation in cortical bone is affected by the characteristics of the cement line: a parameter study using an XFEM interface damage model. Biomech Model Mechanobiol 2019; 18:1247-1261. [PMID: 30963356 PMCID: PMC6647448 DOI: 10.1007/s10237-019-01142-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 03/22/2019] [Indexed: 01/25/2023]
Abstract
Bulk properties of cortical bone have been well characterized experimentally, and potent toughening mechanisms, e.g., crack deflections, have been identified at the microscale. However, it is currently difficult to experimentally measure local damage properties and isolate their effect on the tissue fracture resistance. Instead, computer models can be used to analyze the impact of local characteristics and structures, but material parameters required in computer models are not well established. The aim of this study was therefore to identify the material parameters that are important for crack propagation in cortical bone and to elucidate what parameters need to be better defined experimentally. A comprehensive material parameter study was performed using an XFEM interface damage model in 2D to simulate crack propagation around an osteon at the microscale. The importance of 14 factors (material parameters) on four different outcome criteria (maximum force, fracture energy, crack length and crack trajectory) was evaluated using ANOVA for three different osteon orientations. The results identified factors related to the cement line to influence the crack propagation, where the interface strength was important for the ability to deflect cracks. Crack deflection was also favored by low interface stiffness. However, the cement line properties are not well determined experimentally and need to be better characterized. The matrix and osteon stiffness had no or low impact on the crack pattern. Furthermore, the results illustrated how reduced matrix toughness promoted crack penetration of the cement line. This effect is highly relevant for the understanding of the influence of aging on crack propagation and fracture resistance in cortical bone.
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Affiliation(s)
- Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
| | - Mathias Wallin
- Division of Solid Mechanics, Lund University, Box 118, 221 00 Lund, Sweden
| | - Hanifeh Khayyeri
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
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Jacobsson H, Harrison H, Hughes É, Persson E, Rhost S, Fitzpatrick P, Gustafsson A, Andersson D, Gregersson P, Magnusson Y, Ståhlberg A, Landberg G. Hypoxia-induced secretion stimulates breast cancer stem cell regulatory signalling pathways. Mol Oncol 2019; 13:1693-1705. [PMID: 31066211 PMCID: PMC6670019 DOI: 10.1002/1878-0261.12500] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 02/04/2019] [Revised: 04/09/2019] [Accepted: 05/07/2019] [Indexed: 01/08/2023] Open
Abstract
It is well known that tumour cells are dependent on communication with the tumour microenvironment. Previously, it has been shown that hypoxia (HX) induces pronounced, diverse and direct effects on cancer stem cell (CSC) qualities in different breast cancer subtypes. Here, we describe the mechanism by which HX-induced secretion influences the spreading of CSCs. Conditioned media (CM) from estrogen receptor (ER)-α-positive hypoxic breast cancer cell cultures increased the fraction of CSCs compared to normal growth conditions, as determined using sets of CSC assays and model systems. In contrast, media from ERα-negative hypoxic cell cultures instead decreased this key subpopulation of cancer cells. Further, there was a striking overrepresentation of JAK-STAT-associated cytokines in both the ERα-positive and ERα-negative linked hypoxic responses as determined by a protein screen of the CM. JAK-STAT inhibitors and knockdown experiments further supported the hypothesis that this pathway is critical for the CSC-activating and CSC-inactivating effects induced by hypoxic secretion. We also observed that the interleukin-6-JAK2-STAT3 axis was specifically central for the ERα-negative hypoxic behaviour. Our results underline the importance of considering breast cancer subtypes in treatments targeting JAK-STAT or HX-associated processes and indicate that HX is not only a confined tumour biological event, but also influences key tumour properties in widespread normoxic microenvironments.
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Affiliation(s)
- Hanna Jacobsson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Hannah Harrison
- Breakthrough Breast Cancer Unit, Centre for Molecular Pathology, Institute of Cancer Sciences, Paterson Institute for Cancer Research, University of Manchester, UK.,Manchester Cancer Research Centre, The University of Manchester, UK
| | - Éamon Hughes
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Emma Persson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Sara Rhost
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Paul Fitzpatrick
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Daniel Andersson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Pernilla Gregersson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Ylva Magnusson
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Anders Ståhlberg
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Sweden.,Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Landberg
- Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Cancer Center, University of Gothenburg, Sweden.,Breakthrough Breast Cancer Unit, Centre for Molecular Pathology, Institute of Cancer Sciences, Paterson Institute for Cancer Research, University of Manchester, UK
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Ohlsson L, Gustafsson A, Lavant E, Suneson K, Brundin L, Westrin Å, Ljunggren L, Lindqvist D. Leaky gut biomarkers in depression and suicidal behavior. Acta Psychiatr Scand 2019; 139:185-193. [PMID: 30347427 PMCID: PMC6587489 DOI: 10.1111/acps.12978] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/15/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Inflammation is associated with major depressive disorder (MDD) and suicidal behavior. According to the 'leaky gut hypothesis', increased intestinal permeability may contribute to this relationship via bacterial translocation across enterocytes. We measured plasma levels of gut permeability markers, in patients with a recent suicide attempt (rSA), MDD subjects with no history of a suicide attempt (nsMDD), and healthy controls (HC), and related these markers to symptom severity and inflammation. METHOD We enrolled rSA (n = 54), nsMDD (n = 13), and HC (n = 17). Zonulin, intestinal fatty acid binding protein (I-FABP), soluble CD14, and interleukin-6 (IL-6) were quantified in plasma. Montgomery-Åsberg Depression Rating Scale (MADRS) and Suicide Assessment Scale (SUAS) were used for symptom assessments. RESULTS The rSA group displayed higher I-FABP and lower zonulin levels compared with both the nsMDD and the HC groups (all P < 0.001). IL-6 correlated positively with I-FABP (r = 0.24, P < 0.05) and negatively with zonulin (r = -0.25, P < 0.05). In all subjects, I-FABP levels correlated positively with MADRS (r = 0.25, P < 0.05) and SUAS scores (r = 0.38, P < 0.001), and the latter correlation was significant also in the nsMDD group (r = 0.60, P < 0.05). CONCLUSION The 'leaky gut hypothesis' may improve our understanding of the link between inflammation and suicidal behavior. These findings should be considered preliminary until replicated in larger cohorts.
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Affiliation(s)
- L. Ohlsson
- Department of Biomedical ScienceMalmo UniversityMalmöSweden
| | - A. Gustafsson
- Department of Biomedical ScienceMalmo UniversityMalmöSweden
| | - E. Lavant
- Department of Biomedical ScienceMalmo UniversityMalmöSweden
| | - K. Suneson
- Faculty of MedicineDepartment of Clinical Sciences Lund, PsychiatryLund UniversityLundSweden
| | - L. Brundin
- Center for Neurodegenerative ScienceVan Andel Research InstituteGrand RapidsMIUSA
| | - Å. Westrin
- Faculty of MedicineDepartment of Clinical Sciences Lund, PsychiatryLund UniversityLundSweden
| | - L. Ljunggren
- Department of Biomedical ScienceMalmo UniversityMalmöSweden
| | - D. Lindqvist
- Faculty of MedicineDepartment of Clinical Sciences Lund, PsychiatryLund UniversityLundSweden
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Nordendahl E, Kjellström B, Fored C, Ekbom A, Svensson T, Norhammar A, Gustafsson A. Invasive Dental Treatment and Risk for a First Myocardial Infarction. J Dent Res 2018; 97:1100-1105. [DOI: 10.1177/0022034518767834] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Invasive dental treatment is suggested to be associated with an increased risk for the development of cardiovascular events. We tested the hypothesis that the incidence of a first myocardial infarction (MI) within 4 wk after invasive dental treatments is increased. A registry-based case-control study within nationwide health care and population registries in Sweden was performed. The case patients included 51,880 individuals with a first fatal or nonfatal MI between January 2011 and December 2013. For each case, 5 control subjects, free from prior MI and matched for age, sex, and geographic area of residence, were randomly selected from the national population registry through risk set sampling with replacement, resulting in 246,978 control subjects. Information on dental treatments was obtained from the Dental Health Register, and the procedures were categorized into invasive dental treatments or other dental treatments. Conditional logistic regression was used to estimate odds ratios (ORs) for MI with corresponding 95% confidence intervals (CIs). In addition to the matching variables, adjustments were made for the following confounders: diabetes, previous cardiovascular disease (CVD), CVD drug treatment, education, and income. The mean age for case patients and controls subjects was 72.6 ± 13.0 y and 72.3 ± 13.0 y, respectively. Case patients more often had previous CVD (49% vs. 23%; P < 0.001) and diabetes (19% vs. 11%; P < 0.001) and received more treatment with CVD drugs (68% vs. 56%; P < 0.001) than control subjects. There was no association between invasive dental treatments during the 4 wk preceding the MI index date (crude OR = 0.99; 95% CI, 0.92 to 1.06; adjusted for confounders OR = 0.98; 95% CI, 0.91 to 1.06). This study did not support the hypothesis of an increased incidence of MI after recent invasive dental treatment.
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Affiliation(s)
- E. Nordendahl
- Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - B. Kjellström
- Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Sweden
| | - C.M. Fored
- Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Sweden
- Clinical Epidemiology Unit, Karolinska Institutet, Solna, Sweden
| | - A. Ekbom
- Clinical Epidemiology Unit, Karolinska Institutet, Solna, Sweden
| | - T. Svensson
- Clinical Epidemiology Unit, Karolinska Institutet, Solna, Sweden
| | - A. Norhammar
- Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Sweden
- Capio S:t Görans Hospital, Stockholm, Sweden
| | - A. Gustafsson
- Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
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Nordendahl E, Gustafsson A, Norhammar A, Näsman P, Rydén L, Kjellström B. Severe Periodontitis Is Associated with Myocardial Infarction in Females. J Dent Res 2018; 97:1114-1121. [PMID: 29596754 DOI: 10.1177/0022034518765735] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The aim of the present study was to test the hypothesis that there is a sex difference in the association between periodontitis (PD) and a first myocardial infarction (MI). The analysis in the case-control study was based on 785 patients (147 females and 638 males) with a first MI and 792 matched controls (147 females and 645 males), screened for cardiovascular risk factors and subjected to a panoramic dental X-ray. Periodontal status was defined by alveolar bone loss and diagnosed as no PD (≥80% remaining alveolar bone), mild to moderate PD (66% to 79%), or severe PD (<66%). Logistic regression was used when analyzing PD as a risk factor for MI, adjusting for age, smoking, diabetes, education, and marital status. The mean age was 64 ± 7 y for females and 62 ± 8 y for males. Severe PD was more common in female patients than female controls (14 vs. 4%, P = 0.005), with an increased risk for severe PD among female patients with a first MI (odds ratio [OR] = 3.92, 95% confidence interval [CI] =1.53 to 10.00, P = 0.005), which remained (OR = 3.72, 95% CI = 1.24 to 11.16, P = 0.005) after adjustments. Male patients had more severe PD (7% vs. 4%; P = 0.005) than male controls and an increased risk for severe PD (OR = 1.88, 95% CI = 1.14 to 3.11, P = 0.005), but this association did not remain following adjustment (OR = 1.67, 95% CI = 0.97 to 2.84, NS). Severe PD was associated with MI in both females and males. After adjustments for relevant confounders, this association did, however, remain only in females. These data underline the importance of considering poor dental health when evaluating cardiovascular risk, especially in females.
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Affiliation(s)
- E Nordendahl
- 1 Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - A Gustafsson
- 1 Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - A Norhammar
- 2 Department of Medicine, Karolinska Institutet, Stockholm, Sweden.,3 Capio S:t Görans Hospital, Stockholm, Sweden
| | - P Näsman
- 4 Center for Safety Research, KTH Royal Institute of Technology, Stockholm, Sweden
| | - L Rydén
- 2 Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - B Kjellström
- 2 Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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Gustafsson A, Mathavan N, Turunen MJ, Engqvist J, Khayyeri H, Hall SA, Isaksson H. Linking multiscale deformation to microstructure in cortical bone using in situ loading, digital image correlation and synchrotron X-ray scattering. Acta Biomater 2018; 69:323-331. [PMID: 29410089 DOI: 10.1016/j.actbio.2018.01.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/20/2017] [Accepted: 01/25/2018] [Indexed: 11/27/2022]
Abstract
The incidence of fragility fractures is expected to increase in the near future due to an aging population. Therefore, improved tools for fracture prediction are required to treat and prevent these injuries efficiently. For such tools to succeed, a better understanding of the deformation mechanisms in bone over different length scales is needed. In this study, an experimental setup including mechanical tensile testing in combination with digital image correlation (DIC) and small/wide angle X-ray scattering (SAXS/WAXS) was used to study deformation at multiple length scales in bovine cortical bone. Furthermore, micro-CT imaging provided detailed information about tissue microstructure. The combination of these techniques enabled measurements of local deformations at the tissue- and nanoscales. The orientation of the microstructure relative to the tensile loading was found to influence the strain magnitude on all length scales. Strains in the collagen fibers were 2-3 times as high as the strains found in the mineral crystals for samples with microstructure oriented parallel to the loading. The local tissue strain at fracture was found to be around 0.5%, independent of tissue orientation. However, the maximum force and the irregularity of the crack path were higher when the load was applied parallel to the tissue orientation. This study clearly shows the potential of combining these different experimental techniques concurrently with mechanical testing to gain a better understanding of bone damage and fracture over multiple length scales in cortical bone. STATEMENT OF SIGNIFICANCE To understand the pathophysiology of bone, it is important to improve our knowledge about the deformation and fracture mechanisms in bone. In this study, we combine several recently available experimental techniques with mechanical loading to investigate the deformation mechanisms in compact bone tissue on several length scales simultaneously. The experimental setup included mechanical tensile testing in combination with digital image correlation, microCT imaging, and small/wide angle X-ray scattering. The combination of techniques enabled measurements of local deformations at the tissue- and nanoscales. The study clearly shows the potential of combining different experimental techniques concurrently with mechanical testing to gain a better understanding of structure-property-function relationships in bone tissue.
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Affiliation(s)
- Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Neashan Mathavan
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Mikael J Turunen
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden; Department of Applied Physics, University of Eastern Finland, POB 1627, FI-702 11 Kuopio, Finland.
| | - Jonas Engqvist
- Division of Solid Mechanics, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Hanifeh Khayyeri
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Stephen A Hall
- Division of Solid Mechanics, Lund University, Box 118, SE-221 00 Lund, Sweden.
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden.
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Ben Sedrine N, Ribeiro-Andrade R, Gustafsson A, Soares MR, Bourgard J, Teixeira JP, Salomé PMP, Correia MR, Moreira MVB, De Oliveira AG, González JC, Leitão JP. Fluctuating potentials in GaAs:Si nanowires: critical reduction of the influence of polytypism on the electronic structure. Nanoscale 2018; 10:3697-3708. [PMID: 29388656 DOI: 10.1039/c7nr08395e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, the effects of Si doping in GaAs nanowires (NWs) grown on GaAs (111)B by molecular beam epitaxy with different Si doping levels (nominal free carrier concentrations of 1 × 1016, 8 × 1016, 1 × 1018 and 5 × 1018 cm-3) are deeply investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), grazing incidence X-ray diffraction (GID), photoluminescence (PL) and cathadoluminescence (CL). TEM results reveal a mixture of wurtzite (WZ) and zinc-blende (ZB) segments along the NW axis independently of the Si doping levels. GID measurements suggest a slight increase of the ZB fraction with the Si doping. Low temperature PL and CL spectra exhibit sharp lines in the energy range 1.41-1.48 eV, for the samples with lower Si doping levels. However, the emission intensity increases and is accompanied by a clear broadening of the observed lines for the samples with higher Si doping levels. The staggered type-II band alignment only determines the optical properties of the lower doping levels in GaAs:Si NWs. For the higher Si doping levels, the electronic energy level structure of the NWs is determined by electrostatic fluctuating potentials intimately related to the amphoteric behavior of the Si dopant in GaAs. For the heavily doped NWs, the estimated depth of the potential wells is ∼96-117 meV. Our results reveal that the occurrence of the fluctuating potentials is not dependent on the crystalline phase and shows that the limitation imposed by the polytypism can be overcome.
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Affiliation(s)
- N Ben Sedrine
- Departamento de Física and I3N, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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Gustafsson A, Fritz HK, Dahlbäck B. Gas6-Axl signaling in presence of Sunitinib is enhanced, diversified and sustained in renal tumor cells, resulting in tumor-progressive advantages. Exp Cell Res 2017; 355:47-56. [DOI: 10.1016/j.yexcr.2017.03.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/26/2017] [Accepted: 03/18/2017] [Indexed: 12/01/2022]
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Gustafsson A, Ventorp F, Wisén AG, Ohlsson L, Ljunggren L, Westrin Å. Effects of Acute Exercise on Circulating Soluble Form of the Urokinase Receptor in Patients With Major Depressive Disorder. Biomark Insights 2017; 12:1177271917704193. [PMID: 28469403 PMCID: PMC5397280 DOI: 10.1177/1177271917704193] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 12/06/2016] [Accepted: 03/18/2017] [Indexed: 01/19/2023] Open
Abstract
Inflammation has been proposed to play a role in the generation of depressive symptoms. Previously, we demonstrated that patients with major depressive disorder (MDD) have increased plasma levels of the soluble form of the urokinase receptor (suPAR), a marker for low-grade inflammation. The aim of this study was to test the hypothesis that acute exercise would induce inflammatory response characterized by increased suPAR and elucidate whether patients with MDD display altered levels of suPAR in response to acute exercise. A total of 17 patients with MDD and 17 controls were subjected to an exercise challenge. Plasma suPAR (P-suPAR) was analyzed before, during, and after exercise. There was a significantly higher baseline P-suPAR in the patients with MDD, and the dynamic changes of P-suPAR during the exercise were significantly lower in the patients with MDD, compared with the controls. This study supports the hypothesis that an activation of systemic inflammatory processes, measured as elevated P-suPAR, is involved in the pathophysiology of depression. The study concludes that P-suPAR is influenced by acute exercise, most likely due to release from activated neutrophils.
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Affiliation(s)
- Anna Gustafsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Filip Ventorp
- Department of Clinical Sciences, Division of Psychiatry, Lund University, Lund, Sweden
| | - Anita Gm Wisén
- Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden
| | - Lars Ohlsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Lennart Ljunggren
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Åsa Westrin
- Department of Clinical Sciences, Division of Psychiatry, Lund University, Lund, Sweden
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Figueredo CM, Martins AP, Lira-Junior R, Menegat JB, Carvalho AT, Fischer RG, Gustafsson A. Activity of inflammatory bowel disease influences the expression of cytokines in gingival tissue. Cytokine 2017; 95:1-6. [PMID: 28189042 DOI: 10.1016/j.cyto.2017.01.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/29/2016] [Accepted: 01/24/2017] [Indexed: 12/31/2022]
Abstract
This study assessed the cytokine expression in gingival and intestinal tissues from periodontitis patients with inflammatory bowel disease (IBD) and evaluated if IBD activity is a covariate to the amount of gingival cytokines. Paired gingival and intestinal tissues were collected from 21 patients and homogenised using a cell disruptor. Cytokine expression (IL-1β, IL-4, IL-6, IL-10, IL-21, IL-22, IL-23, IL-25, IL-31, IL-33, IL-17A, IL-17F, IFN-γ, sCD40L, and TNF-α) was evaluated using bead-based multiplex technology. An inflammation score was developed using the intestinal cytokines that showed good accuracy to discriminate IBD active patients from those in remission and then a similar score was applied to gingival tissue. IL-4, IL-10 and IL-21 expressions were significantly increased in gingival tissue from patients with an active disease as compared to those with a disease in remission. The inflammation score (mean value of IL-1β, IL-6, IL-21, and sCD40L) was significantly higher in gingival tissue from patients with IBD activity. There was a significant correlation between gingival and intestinal inflammation scores (rho=0.548; P=0.01). Significantly higher IL-23 and IFN-γ levels and lower IL-31 and TNF-α levels were observed in gingival tissues than in intestinal ones. Activity of inflammatory bowel disease influenced the cytokine expression in gingival tissue.
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Affiliation(s)
- C M Figueredo
- Department of Periodontology, Faculty of Odontology, Rio de Janeiro State University, Rio de Janeiro, Brazil.
| | - A P Martins
- Department of Periodontology, Faculty of Odontology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - R Lira-Junior
- Department of Periodontology, Faculty of Odontology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - J B Menegat
- Department of Periodontology, Faculty of Odontology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - A T Carvalho
- Department of Internal Medicine, Faculty of Medicine, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - R G Fischer
- Department of Periodontology, Faculty of Odontology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - A Gustafsson
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
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Gustafsson A, Schilcher J, Grassi L, Aspenberg P, Isaksson H. Strains caused by daily loading might be responsible for delayed healing of an incomplete atypical femoral fracture. Bone 2016; 88:125-130. [PMID: 27113528 DOI: 10.1016/j.bone.2016.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/30/2016] [Accepted: 04/22/2016] [Indexed: 11/24/2022]
Abstract
Atypical femoral fractures are insufficiency fractures in the lateral femoral diaphysis or subtrochanteric region that mainly affect older patients on bisphosphonate therapy. Delayed healing is often seen in patients with incomplete fractures (cracks), and histology of bone biopsies shows mainly necrotic material inside the crack. We hypothesized that the magnitude of the strains produced in the soft tissue inside the crack during normal walk exceeds the limit for new bone formation, and thereby inhibit healing. A patient specific finite element model was developed, based on clinical CT images and high resolution μCT images of a biopsy from the crack site. Strain distributions in the femur and inside the crack were calculated for load cases representing normal walk. The models predicted large strains inside the crack, with strain levels above 10% in more than three quarters of the crack volume. According to two different tissue differentiation theories, bone would only form in less than 1-5% of the crack volume. This can explain the impaired healing generally seen in incomplete atypical fractures. Furthermore, the microgeometry of the crack highly influenced the strain distributions. Hence, a realistic microgeometry needs to be considered when modeling the crack. Histology of the biopsy showed signs of remodeling in the bone tissue adjacent to the fracture line, while the crack itself contained mainly necrotic material and signs of healing only in portions that seemed to have been widened by resorption. In conclusion, the poor healing capacity of incomplete atypical femoral fractures can be explained by biomechanical factors, and daily low impact activities are enough to cause strain magnitudes that prohibit bone formation.
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Affiliation(s)
- Anna Gustafsson
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Jörg Schilcher
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Lorenzo Grassi
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Per Aspenberg
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Lund, Sweden.
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Khayyeri H, Longo G, Gustafsson A, Isaksson H. Comparison of structural anisotropic soft tissue models for simulating Achilles tendon tensile behaviour. J Mech Behav Biomed Mater 2016; 61:431-443. [PMID: 27108350 DOI: 10.1016/j.jmbbm.2016.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 01/14/2016] [Revised: 03/25/2016] [Accepted: 04/05/2016] [Indexed: 10/21/2022]
Abstract
The incidence of tendon injury (tendinopathy) has increased over the past decades due to greater participation in sports and recreational activities. But little is known about the aetiology of tendon injuries because of our limited knowledge in the complex structure-function relationship in tendons. Computer models can capture the biomechanical behaviour of tendons and its structural components, which is essential for understanding the underlying mechanisms of tendon injuries. This study compares three structural constitutive material models for the Achilles tendon and discusses their application on different biomechanical simulations. The models have been previously used to describe cardiovascular tissue and articular cartilage, and one model is novel to this study. All three constitutive models captured the tensile behaviour of rat Achilles tendon (root mean square errors between models and experimental data are 0.50-0.64). They further showed that collagen fibres are the main load-bearing component and that the non-collagenous matrix plays a minor role in tension. By introducing anisotropic behaviour also in the non-fibrillar matrix, the new biphasic structural model was also able to capture fluid exudation during tension and high values of Poisson׳s ratio that is reported in tendon experiments.
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Affiliation(s)
- Hanifeh Khayyeri
- Department of Biomedical Engineering, Lund University, BMC D13, 22184 Lund, Sweden.
| | - Giacomo Longo
- Department of Biomedical Engineering, Lund University, BMC D13, 22184 Lund, Sweden
| | - Anna Gustafsson
- Department of Biomedical Engineering, Lund University, BMC D13, 22184 Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, BMC D13, 22184 Lund, Sweden
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Aneheim E, Gustafsson A, Albertsson P, Bäck T, Jensen H, Palm S, Svedhem S, Lindegren S. Synthesis and Evaluation of Astatinated N-[2-(Maleimido)ethyl]-3-(trimethylstannyl)benzamide Immunoconjugates. Bioconjug Chem 2016; 27:688-97. [PMID: 26791409 DOI: 10.1021/acs.bioconjchem.5b00664] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Effective treatment of metastasis is a great challenge in the treatment of different types of cancers. Targeted alpha therapy utilizes the short tissue range (50-100 μm) of α particles, making the method suitable for treatment of disseminated occult cancers in the form of microtumors or even single cancer cells. A promising radioactive nuclide for this type of therapy is astatine-211. Astatine-211 attached to tumor-specific antibodies as carrier molecules is a system currently under investigation for use in targeted alpha therapy. In the common radiolabeling procedure, astatine is coupled to the antibody arbitrarily on lysine residues. By instead coupling astatine to disulfide bridges in the antibody structure, the immunoreactivity of the antibody conjugates could possibly be increased. Here, the disulfide-based conjugation was performed using a new coupling reagent, maleimidoethyl 3-(trimethylstannyl)benzamide (MSB), and evaluated for chemical stability in vitro. The immunoconjugates were subsequently astatinated, resulting in both high radiochemical yield and high specific activity. The MSB-conjugate was shown to be stable with a long shelf life prior to the astatination. In a comparison of the in vivo distribution of the new immunoconjugate with other tin-based immunoconjugates in tumor-bearing mice, the MSB conjugation method was found to be a viable option for successful astatine labeling of different monoclonal antibodies.
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Affiliation(s)
- Emma Aneheim
- Department of Radiation Physics, Gothenburg University , Gula Stråket 2B, 41345 Gothenburg, Sweden
| | - Anna Gustafsson
- Department of Radiation Physics, Gothenburg University , Gula Stråket 2B, 41345 Gothenburg, Sweden
| | - Per Albertsson
- Department of Oncology, Gothenburg University , 41345 Gothenburg, Sweden
| | - Tom Bäck
- Department of Radiation Physics, Gothenburg University , Gula Stråket 2B, 41345 Gothenburg, Sweden
| | - Holger Jensen
- PET and Cyclotron Unit, KF3982, Copenhagen University Hospital , DK-2100 Copenhagen, Denmark
| | - Stig Palm
- Department of Radiation Physics, Gothenburg University , Gula Stråket 2B, 41345 Gothenburg, Sweden
| | - Sofia Svedhem
- Department of Applied Physics, Chalmers University of Technology , 41296, Gothenburg, Sweden
| | - Sture Lindegren
- Department of Radiation Physics, Gothenburg University , Gula Stråket 2B, 41345 Gothenburg, Sweden
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Ventorp F, Gustafsson A, Träskman-Bendz L, Westrin Å, Ljunggren L. Increased Soluble Urokinase-Type Plasminogen Activator Receptor (suPAR) Levels in Plasma of Suicide Attempters. PLoS One 2015; 10:e0140052. [PMID: 26451727 PMCID: PMC4599802 DOI: 10.1371/journal.pone.0140052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 09/21/2015] [Indexed: 11/18/2022] Open
Abstract
The soluble form of the urokinase receptor, suPAR, has been suggested as a novel biomarker of low-grade inflammation. Activation of the immune system has been proposed to contribute to the development of depression and suicidal behavior. In order to identify depressed and suicidal individuals who could benefit from an anti-inflammatory treatment, a reliable biomarker of low-grade inflammation is vital. This study evaluates plasma suPAR levels as a biomarker of low-grade inflammation in patients with major depressive disorder and in patients who recently attempted suicide. The plasma suPAR and an established biomarker, C reactive protein (CRP) of suicide attempters (n = 54), depressed patients (n = 19) and healthy controls (n = 19) was analyzed with enzyme-linked immunosorbent assays. The biomarker attributes of sensitivity and sensibility were evaluated using ROC curve analysis. Both the depressed patients and suicide attempters had increased plasma suPAR. The levels of suPAR discriminated better between controls and suicide attempters than did CRP. In the future, plasma suPAR might be a superior prognosticator regarding outcome of treatment applying conventional antidepressants in conjunction with anti-inflammatory drugs.
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Affiliation(s)
- Filip Ventorp
- Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Anna Gustafsson
- Department of Biomedical Sciences, Malmö University, Malmö, Sweden
| | - Lil Träskman-Bendz
- Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Åsa Westrin
- Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden
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