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Rytky SJO, Tiulpin A, Finnilä MAJ, Karhula SS, Sipola A, Kurttila V, Valkealahti M, Lehenkari P, Joukainen A, Kröger H, Korhonen RK, Saarakkala S, Niinimäki J. Clinical Super-Resolution Computed Tomography of Bone Microstructure: Application in Musculoskeletal and Dental Imaging. Ann Biomed Eng 2024; 52:1255-1269. [PMID: 38361137 PMCID: PMC10995025 DOI: 10.1007/s10439-024-03450-y] [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: 08/17/2023] [Accepted: 01/09/2024] [Indexed: 02/17/2024]
Abstract
PURPOSE Clinical cone-beam computed tomography (CBCT) devices are limited to imaging features of half a millimeter in size and cannot quantify the tissue microstructure. We demonstrate a robust deep-learning method for enhancing clinical CT images, only requiring a limited set of easy-to-acquire training data. METHODS Knee tissue from five cadavers and six total knee replacement patients, and 14 teeth from eight patients were scanned using laboratory CT as training data for the developed super-resolution (SR) technique. The method was benchmarked against ex vivo test set, 52 osteochondral samples are imaged with clinical and laboratory CT. A quality assurance phantom was imaged with clinical CT to quantify the technical image quality. To visually assess the clinical image quality, musculoskeletal and maxillofacial CBCT studies were enhanced with SR and contrasted to interpolated images. A dental radiologist and surgeon reviewed the maxillofacial images. RESULTS The SR models predicted the bone morphological parameters on the ex vivo test set more accurately than conventional image processing. The phantom analysis confirmed higher spatial resolution on the SR images than interpolation, but image grayscales were modified. Musculoskeletal and maxillofacial CBCT images showed more details on SR than interpolation; however, artifacts were observed near the crown of the teeth. The readers assessed mediocre overall scores for both SR and interpolation. The source code and pretrained networks are publicly available. CONCLUSION Model training with laboratory modalities could push the resolution limit beyond state-of-the-art clinical musculoskeletal and dental CBCT. A larger maxillofacial training dataset is recommended for dental applications.
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Affiliation(s)
- Santeri J O Rytky
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland.
| | - Aleksei Tiulpin
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland
- Neurocenter Oulu, Oulu University Hospital, Oulu, Finland
| | - Mikko A J Finnilä
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland
- Medical Research Center, University of Oulu, Oulu, Finland
| | - Sakari S Karhula
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland
- Department of Radiotherapy, Oulu University Hospital, Oulu, Finland
| | - Annina Sipola
- Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
| | - Väinö Kurttila
- Department of Oral and Maxillofacial Surgery, Oulu University Hospital, Oulu, Finland
| | - Maarit Valkealahti
- Department of Surgery and Intensive Care, Oulu University Hospital, Oulu, Finland
| | - Petri Lehenkari
- Department of Surgery and Intensive Care, Oulu University Hospital, Oulu, Finland
- Cancer and Translational Medical Research Unit, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Antti Joukainen
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland
| | - Heikki Kröger
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland
| | - Rami K Korhonen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - Simo Saarakkala
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland
- Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
| | - Jaakko Niinimäki
- Research Unit of Health Sciences and Technology, University of Oulu, POB 5000, 90014, Oulu, Finland
- Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
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Blomster TM, Koivurova OP, Koskela R, Herzig KH, Talley NJ, Ronkainen J. Pregnancy period and early-life risk factors for inflammatory bowel disease: a Northern Finland birth cohort 1966 study. BMC Public Health 2024; 24:1038. [PMID: 38622673 PMCID: PMC11017657 DOI: 10.1186/s12889-024-18549-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: 12/20/2023] [Accepted: 04/08/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND The pathogenesis of inflammatory bowel disease (IBD) has not been fully elucidated. The aim of this study was to analyze the pregnancy period, perinatal period, and infancy period risk factors for IBD in a well-characterized birth cohort from Northern Finland. METHODS The Northern Finland Birth Cohort 1966 (NFBC1966) population comprises mothers living in the two northernmost provinces of Finland, Oulu, and Lapland, with dates of delivery between Jan 1st and Dec 31st, 1966 (12 055 mothers, 12 058 live-born children, 96.3% of all births during 1966). IBD patients were identified using hospital registries (from 1966 to 2020) and Social Insurance Institution (SII) registry reimbursement data for IBD drugs (from 1978 to 2016). The data were analyzed by Fisher's exact test and logistic regression. RESULTS In total, 6972 individuals provided informed consent for the use of combined SII and hospital registry data. Of those, 154 (2.1%) had IBD (113 [1.6%] had ulcerative colitis (UC), and 41 (0.6%) had Crohn's disease (CD)). According to multivariate analysis, maternal smoking > 10 cigarettes/day during pregnancy was associated with a nearly 6-fold increased risk of CD in the offspring (OR 5.78, 95% CI 1.70-17.3). Breastfeeding (OR = 0.18, 95% CI 0.08-0.44) and iron supplementation during the first year of life (OR = 0.43, 95% CI 0.21-0.89) were negatively associated with CD. CONCLUSIONS Smoking during pregnancy was associated with the risk of CD while Breastfeeding and oral iron supplementation at infancy were negatively associated with the risk of CD later in life.
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Affiliation(s)
- Timo M Blomster
- Department of Internal Medicine, Institute of Clinical Medicine, University of Oulu, Oulu, Finland
| | | | - Ritva Koskela
- Department of Internal Medicine, Institute of Clinical Medicine, University of Oulu, Oulu, Finland
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine and Internal Medicine, Biocenter of Oulu, Medical Research Center, University of Oulu and Oulu University Hospital, Oulu, Finland
- Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, Poznan, Poland
| | - Nicholas J Talley
- School of Medicine and Public Health, Hunter Medical Research Institute, University of Newcastle, NHMRC Centre of Research Excellence in Digestive Health, Newcastle, Australia
| | - Jukka Ronkainen
- Primary Health Care Center, Lapland Welfare District, Tornio, Finland.
- Research Unit of Population Health, University of Oulu, Faculty of Medicine, FIN-90014, Oulu, P.O. Box 5000, Finland.
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Kariniemi K, Vääräsmäki M, Männistö T, Mustaniemi S, Kajantie E, Eteläinen S, Keikkala E. Neonatal outcomes according to different glucose threshold values in gestational diabetes: a register-based study. BMC Pregnancy Childbirth 2024; 24:271. [PMID: 38609891 PMCID: PMC11010296 DOI: 10.1186/s12884-024-06473-4] [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: 12/22/2023] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Mild hyperglycaemia is associated with increased birth weight but association with other neonatal outcomes is controversial. We aimed to study neonatal outcomes in untreated mild hyperglycaemia using different oral glucose tolerance test (OGTT) thresholds. METHODS This register-based study included all (n = 4,939) singleton pregnant women participating a 75 g 2-h OGTT in six delivery hospitals in Finland in 2009. Finnish diagnostic cut-offs for GDM were fasting ≥ 5.3, 1 h ≥ 10.0 or 2-h glucose ≥ 8.6 mmol/L. Women who did not meet these criteria but met the International Association of the Diabetes and Pregnancy Study Groups (IADPSG) criteria (fasting 5.1-5.2 mmol/L and/or 2-h glucose 8.5 mmol/L, n = 509) or the National Institute for Health and Clinical Excellence (NICE) criteria (2-h glucose 7.8-8.5 mmol/L, n = 166) were considered as mild untreated hyperglycaemia. Women who met both the Finnish criteria and the IADPSG or the NICE criteria were considered as treated GDM groups (n = 1292 and n = 612, respectively). Controls were normoglycaemic according to all criteria (fasting glucose < 5.1 mmol/L, 1-h glucose < 10.0 mmol/L and 2-h glucose < 8.5 mmol/L, n = 3031). Untreated mild hyperglycemia groups were compared to controls and treated GDM groups. The primary outcome - a composite of adverse neonatal outcomes, including neonatal hypoglycaemia, hyperbilirubinaemia, birth trauma or perinatal mortality - was analysed using multivariate logistic regression. RESULTS The risk for the adverse neonatal outcome in untreated mild hyperglycemia was not increased compared to controls (adjusted odds ratio [aOR]: 1.01, 95% confidence interval [CI]: 0.71-1.44, using the IADPSG criteria; aOR: 1.05, 95% CI: 0.60-1.85, using the NICE criteria). The risk was lower compared to the treated IADPSG (aOR 0.38, 95% CI 0.27-0.53) or the treated NICE group (aOR 0.32, 95% CI 0.18-0.57). DISCUSSION The risk of adverse neonatal outcomes was not increased in mild untreated hyperglycaemia compared to normoglycaemic controls and was lower than in the treated GDM groups. The OGTT cut-offs of 5.3 mmol/L at fasting and 8.6 mmol/L at 2 h seem to sufficiently identify clinically relevant GDM, without excluding neonates with a risk of adverse outcomes.
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Affiliation(s)
- Kaisa Kariniemi
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Marja Vääräsmäki
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Tuija Männistö
- NordLab, Oulu, Finland
- Faculty of Medicine, Research Unit of Translational Medicine, University of Oulu, Oulu, Finland
| | - Sanna Mustaniemi
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Eero Kajantie
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Sanna Eteläinen
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Elina Keikkala
- Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Kajaanintie 50, 90220, Oulu, Finland.
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland.
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Tuppurainen H, Laurila N, Nätynki M, Eshraghi L, Tervasmäki A, Erichsen L, Sørensen CS, Pylkäs K, Winqvist R, Peltoketo H. PALB2-mutated human mammary cells display a broad spectrum of morphological and functional abnormalities induced by increased TGFβ signaling. Cell Mol Life Sci 2024; 81:173. [PMID: 38597967 PMCID: PMC11006627 DOI: 10.1007/s00018-024-05183-6] [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: 06/02/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 04/11/2024]
Abstract
Heterozygous mutations in any of three major genes, BRCA1, BRCA2 and PALB2, are associated with high-risk hereditary breast cancer susceptibility frequently seen as familial disease clustering. PALB2 is a key interaction partner and regulator of several vital cellular activities of BRCA1 and BRCA2, and is thus required for DNA damage repair and alleviation of replicative and oxidative stress. Little is however known about how PALB2-deficiency affects cell function beyond that, especially in the three-dimensional setting, and also about its role during early steps of malignancy development. To answer these questions, we have generated biologically relevant MCF10A mammary epithelial cell lines with mutations that are comparable to certain clinically important PALB2 defects. We show in a non-cancerous background how both mono- and biallelically PALB2-mutated cells exhibit gross spontaneous DNA damage and mitotic aberrations. Furthermore, PALB2-deficiency disturbs three-dimensional spheroid morphology, increases the migrational capacity and invasiveness of the cells, and broadly alters their transcriptome profiles. TGFβ signaling and KRT14 expression are enhanced in PALB2-mutated cells and their inhibition and knock down, respectively, lead to partial restoration of cell functions. KRT14-positive cells are also more abundant with DNA damage than KRT14-negative cells. The obtained results indicate comprehensive cellular changes upon PALB2 mutations, even in the presence of half dosage of wild type PALB2 and demonstrate how PALB2 mutations may predispose their carriers to malignancy.
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Affiliation(s)
- Hanna Tuppurainen
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Niina Laurila
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Marjut Nätynki
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Leila Eshraghi
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
- Garvan Institute of Medical Research, Sydney, Australia
| | - Anna Tervasmäki
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Louisa Erichsen
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | | | - Katri Pylkäs
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
- Northern Finland Laboratory Centre, Oulu, Finland
| | - Robert Winqvist
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland.
| | - Hellevi Peltoketo
- Laboratory of Cancer Genetics and Tumor Biology, Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland.
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Emilia P, Helminen O, Kauppila JH. ASO Author Reflections: Neoadjuvant Chemotherapy Does not Increase Postoperative Complications Compared with Upfront Surgery in Gastric Adenocarcinoma: A Population-Based, Nationwide Study in Finland. Ann Surg Oncol 2024; 31:2711-2712. [PMID: 38206506 PMCID: PMC10908602 DOI: 10.1245/s10434-023-14886-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024]
Affiliation(s)
- Putila Emilia
- Surgery Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
| | - Olli Helminen
- Surgery Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Joonas H Kauppila
- Surgery Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Upper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
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Putila E, Helminen O, Helmiö M, Huhta H, Jalkanen A, Kallio R, Koivukangas V, Kokkola A, Laine S, Lietzen E, Louhimo J, Meriläinen S, Pohjanen VM, Rantanen T, Junttila A, Ristimäki A, Räsänen JV, Saarnio J, Sihvo E, Toikkanen V, Tyrväinen T, Valtola A, Kauppila JH. Postoperative Complications After Neoadjuvant Chemotherapy Versus Upfront Surgery in Gastric Adenocarcinoma: A Population-Based Nationwide Study in Finland. Ann Surg Oncol 2024; 31:2689-2698. [PMID: 38153640 PMCID: PMC10908606 DOI: 10.1245/s10434-023-14813-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/07/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND To date, no large population-based studies have compared complications and short-term outcomes between neoadjuvant chemotherapy and upfront surgery in gastric cancer. More nationwide studies with standardized reporting on complications are needed to enable international comparison between studies. This study aimed to compare postoperative complications between neoadjuvant therapy and upfront surgery after gastrectomy for gastric adenocarcinoma in a population-based setting. METHODS This population-based study based on the Finnish National Esophago-Gastric Cancer Cohort included all patients 18 years of age or older undergoing gastrectomy for gastric adenocarcinoma in Finland during 2005-2016. Logistic regression provided odds ratios (ORs) with 95% confidence intervals (CIs), both crude and adjusted for key confounders. Different types of complications were graded based on the Esophagectomy Complications Consensus Group definitions, and major complications were assessed by the Clavien-Dindo scale. RESULTS This study analyzed 769 patients. Neoadjuvant chemotherapy did not increase major postoperative complications after gastrectomy for gastric cancer compared with upfront surgery (OR, 1.12; 95% CI 0.81-1.56). Furthermore, it did not increase pneumonia, anastomotic complications, wound complications, or other complications. CONCLUSIONS Neoadjuvant therapy is not associated with increased postoperative complications, reoperations, or short-term mortality compared with upfront surgery in gastric adenocarcinoma.
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Affiliation(s)
- Emilia Putila
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland.
| | - Olli Helminen
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - Mika Helmiö
- Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Heikki Huhta
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - Aapo Jalkanen
- Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Raija Kallio
- Department of Oncology and Radiotherapy, Oulu University Hospital, Oulu, Finland
| | - Vesa Koivukangas
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - Arto Kokkola
- Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Simo Laine
- Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Elina Lietzen
- Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Johanna Louhimo
- Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Sanna Meriläinen
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - Vesa-Matti Pohjanen
- Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Tuomo Rantanen
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
- Department of Surgery, Kuopio University Hospital, Kuopio, Finland
| | - Anna Junttila
- Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Ari Ristimäki
- Department of Pathology, HUSLAB, HUS Diagnostic Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Applied Tumor Genomics Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jari V Räsänen
- Department of General Thoracic and Oesophageal Surgery, Heart and Lung Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Juha Saarnio
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - Eero Sihvo
- Department of Surgery, Central Finland Central Hospital, Jyväskylä, Finland
| | - Vesa Toikkanen
- Department of Cardiothoracic Surgery, Heart Center, Tampere University Hospital and University of Tampere, Tampere, Finland
| | - Tuula Tyrväinen
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland
| | - Antti Valtola
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
| | - Joonas H Kauppila
- Surgery Research Unit, Department of Surgery, Medical Research Center Oulu, University Hospital and University of Oulu, Oulu, Finland
- Department of Molecular Medicine and Surgery, Karolinska Institutet and Karolinska University Stockholm, Stockholm, Sweden
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Pernaa N, Vakkuri A, Arvonen M, Kuismin O, Santaniemi W, Glumoff V, Lappi-Blanco E, Lantto U, Okkonen M, Kaikkonen K, Junttila J, Kerkelä R, Åström P, Hautala T. Germline HAVCR2/TIM-3 Checkpoint Inhibitor Receptor Deficiency in Recurrent Autoinflammatory Myocarditis. J Clin Immunol 2024; 44:81. [PMID: 38485795 PMCID: PMC10940375 DOI: 10.1007/s10875-024-01685-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/04/2024] [Indexed: 03/18/2024]
Abstract
Myocarditis can be caused by viral infection, drug reaction or general inflammatory condition. To provide understanding on inflammatory myocarditis, we describe clinical, genetic, and immunological properties of a young male patient who suffered from recurrent myocarditis episodes since the age of four years. Electrocardiography, troponin I/T, echocardiography, myocardial magnetic resonance imaging and histological findings were consistent with recurrent myocarditis episodes. Homozygous c.245 A > G p.Tyr82Cys pathogenic variant in Hepatitis A Virus Cellular Receptor 2 (HAVCR2) gene encoding T cell immunoglobulin and mucin domain-containing protein 3 (TIM-3) receptor was found. Peripheral blood mononuclear cells were collected when the patient was asymptomatic; CD4+ and CD8+ T lymphoblasts, CD56+ natural killer cells and CD14+ monocytes were negative for surface TIM-3 expression. In vitro, TLR4 mediated interleukin-1β (IL-1β) response was high after LPS/ATP stimulation. Clinical symptoms responded to IL-1 receptor antagonist anakinra. TIM-3 p.Tyr82Cys CD4+ and CD8+ T cell proliferation in vitro was unrestrained. Findings on IL-2, interferon gamma, regulatory T cells, signal transducer and activator of transcription (STAT) 1, 3 and 4 phosphorylation, and PD-1 and LAG-3 checkpoint inhibitor receptor analyses were comparable to controls. We conclude that TIM-3 deficiency due to homozygous HAVCR2 c.245 A > G p.Tyr82Cys pathogenic variant in the patient described here is associated with autoinflammatory symptoms limited to early onset recurrent febrile myocarditis. Excessive IL-1β production and defective regulation of T cell proliferation may contribute to this clinical condition responsive to anakinra treatment.
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Affiliation(s)
- Nora Pernaa
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
| | - Anni Vakkuri
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
| | - Miika Arvonen
- Department of Pediatrics, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland
| | - Outi Kuismin
- Department of Clinical Genetics, Oulu University Hospital, Kajaanintie 50, Oulu, 90220, Finland
| | - Wenny Santaniemi
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
| | - Virpi Glumoff
- Medical Research Laboratory Unit, Faculty of Medicine, University of Oulu, Oulu, Finland
| | | | - Ulla Lantto
- Department of Otorhinolaryngology-Head and Neck Surgery, Oulu University Hospital, Oulu, Finland
| | - Marjo Okkonen
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
| | - Kari Kaikkonen
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
| | - Juhani Junttila
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Risto Kerkelä
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Pirjo Åström
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Timo Hautala
- Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, FIN-90014, Finland.
- Infectious Diseases, Oulu University Hospital, Oulu, Finland.
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Mazumder AH, Barnett JH, Halt AH, Taivalantti M, Kerkelä M, Järvelin MR, Veijola J. Visual memory and alcohol use in a middle-aged birth cohort. BMC Public Health 2024; 24:788. [PMID: 38481169 PMCID: PMC10935933 DOI: 10.1186/s12889-024-18153-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 02/19/2024] [Indexed: 03/17/2024] Open
Abstract
Light and moderate alcohol use has been reported to be associated with both impaired and enhanced cognition. The purpose of this study was to explore whether there was a linear relationship between visual memory and alcohol consumption in males and females in a large middle-aged birth cohort population in cross-sectional and longitudinal settings. Data were collected from 5585 participants completing 31-year (1997-1998) and 46-year (2012-2014) follow-ups including Paired Associate Learning (PAL) test at 46-years follow-up. The participants were originally from 12,231 study population of the Northern Finland Birth Cohort 1966 (NFBC1966). The PAL test was conducted to assess visual memory. Reported alcohol use was measured as total daily use of alcohol, beer, wine, and spirits converted into grams and as frequency and amount of use of beer, wine, and spirits. The total daily alcohol use was not associated with reduced visual memory. The frequency of use of beer and wine in males was associated with better visual memory in cross-sectional and longitudinal settings. Using six or more servings of spirits was associated with worse visual memory in males in cross-sectional and longitudinal settings. Using six or more servings of spirits was associated with worse visual memory in males in cross-sectional and longitudinal setting. The study suggested a lack of a linear association between drinking and visual memory in the middle-aged population.
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Affiliation(s)
- Atiqul Haq Mazumder
- Department of Psychiatry, Research Unit of Clinical Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland.
- Department of Psychiatry, Turku Psychosis and Substance Use (TuPSU), University of Turku, Turku, Finland.
| | | | - Anu-Helmi Halt
- Department of Psychiatry, Research Unit of Clinical Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Centre Oulu, University Hospital of Oulu and University of Oulu, and Department of Psychiatry, University Hospital of Oulu, Oulu, Finland
| | - Marjo Taivalantti
- Department of Psychiatry, Research Unit of Clinical Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Centre Oulu, University Hospital of Oulu and University of Oulu, and Department of Psychiatry, University Hospital of Oulu, Oulu, Finland
| | - Martta Kerkelä
- Department of Psychiatry, Research Unit of Clinical Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Marjo-Riitta Järvelin
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Department of Epidemiology and Biostatistics, MRC Health Protection Agency (HPE), Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Unit of Primary Care, Oulu University Hospital, Oulu, Finland
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Juha Veijola
- Department of Psychiatry, Research Unit of Clinical Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Centre Oulu, University Hospital of Oulu and University of Oulu, and Department of Psychiatry, University Hospital of Oulu, Oulu, Finland
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9
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Paloniemi E, Hagnäs M, Mikkola I, Timonen M, Vatjus R. Reflective capacity and context of reflections: qualitative study of second-year medical students' learning diaries related to a general practice course. BMC Med Educ 2024; 24:222. [PMID: 38429724 PMCID: PMC10908101 DOI: 10.1186/s12909-024-05199-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/19/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Reflective capacity is a prerequisite for transformative learning. It is regarded as an essential skill in professional competence in the field of medicine. Our aim was to investigate the reflective capacity and the objects of action (themes) which revealed reflective writing of medical students during a general practice/family medicine course. METHODS Second-year medical students were requested to write learning diaries during a compulsory course in general practice/family medicine consisting of the principles of the physician-patient relationship. The course included a group session supervised by a clinical lecturer and a 3-day training period in a local health centre. We conducted data-driven content analysis of the learning diaries. In the learning diaries, student observations were most commonly directed to events during the training period and to group sessions. Occasionally, observation was directed at inner experience. RESULTS The following themes were related to reflective writing: feelings towards the end of life, demanding situations in practice, physician's attitude to patient, student's inner experiences, and physician's well-being. The entries indicated different types of reflective capacity. Three subgroups were identified: 'simple reporting,' 'reflective writing,' and 'advanced reflective writing.' CONCLUSION Professional growth requires the development of reflective capacity, as it is essential for successful patient care and better clinical outcomes. To develop and enhance the reflective capacity of medical students during their education, the curriculum should provide frequent opportunities for students to assess and reflect upon their various learning experiences.
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Affiliation(s)
- Elina Paloniemi
- Research Unit of Population Health, University of Oulu, Oulu, Finland
- Rovaniemi Health Center, The Wellbeing Services County of Lapland, Rovaniemi, Finland
| | - Maria Hagnäs
- Research Unit of Population Health, University of Oulu, Oulu, Finland
- Rovaniemi Health Center, The Wellbeing Services County of Lapland, Rovaniemi, Finland
| | - Ilona Mikkola
- Research Unit of Population Health, University of Oulu, Oulu, Finland.
- Rovaniemi Health Center, The Wellbeing Services County of Lapland, Rovaniemi, Finland.
| | - Markku Timonen
- Research Unit of Population Health, University of Oulu, Oulu, Finland
| | - Ritva Vatjus
- Research Unit of Population Health, University of Oulu, Oulu, Finland
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10
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Karjula T, Elomaa H, Väyrynen SA, Kuopio T, Ahtiainen M, Mustonen O, Puro I, Niskakangas A, Mecklin JP, Böhm J, Wirta EV, Seppälä TT, Sihvo E, Yannopoulos F, Helminen O, Väyrynen JP. Multiplexed analysis of macrophage polarisation in pulmonary metastases of microsatellite stable colorectal cancer. Cancer Immunol Immunother 2024; 73:59. [PMID: 38386105 PMCID: PMC10884151 DOI: 10.1007/s00262-024-03646-0] [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: 11/25/2023] [Accepted: 01/29/2024] [Indexed: 02/23/2024]
Abstract
Tumour-associated macrophages (TAMs) express a continuum of phenotypes ranging from an anti-tumoural M1-like phenotype to a pro-tumoural M2-like phenotype. During cancer progression, TAMs may shift to a more M2-like polarisation state, but the role of TAMs in CRC metastases is unclear. We conducted a comprehensive spatial and prognostic analysis of TAMs in CRC pulmonary metastases and corresponding primary tumours using multiplexed immunohistochemistry and machine learning-based image analysis. We obtained data from 106 resected pulmonary metastases and 74 corresponding primary tumours. TAMs in the resected pulmonary metastases were located closer to the cancer cells and presented a more M2-like polarised state in comparison to the primary tumours. Higher stromal M2-like macrophage densities in the invasive margin of pulmonary metastases were associated with worse 5-year overall survival (HR 3.19, 95% CI 1.35-7.55, p = 0.008). The results of this study highlight the value of multiplexed analysis of macrophage polarisation in cancer metastases and might have clinical implications in future cancer therapy.
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Affiliation(s)
- Topias Karjula
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
| | - Hanna Elomaa
- Department of Biological and Environmental Science, University of Jyväskylä, 40014, Jyväskylä, Finland
- Department of Education and Research, Hospital Nova of Central Finland, Well Being Services County of Central Finland, 40620, Jyväskylä, Finland
| | - Sara A Väyrynen
- Department of Internal Medicine, Oulu University Hospital, Oulu, Finland
| | - Teijo Kuopio
- Department of Biological and Environmental Science, University of Jyväskylä, 40014, Jyväskylä, Finland
- Department of Pathology, Hospital Nova of Central Finland, Well Being Services County of Central Finland, 40620, Jyväskylä, Finland
| | - Maarit Ahtiainen
- Department of Pathology, Hospital Nova of Central Finland, Well Being Services County of Central Finland, 40620, Jyväskylä, Finland
| | - Olli Mustonen
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Iiris Puro
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Anne Niskakangas
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Jukka-Pekka Mecklin
- Department of Education and Research, Hospital Nova of Central Finland, Well Being Services County of Central Finland, 40620, Jyväskylä, Finland
- Faculty of Sport and Health Sciences, University of Jyväskylä, 40014, Jyväskylä, Finland
| | - Jan Böhm
- Department of Pathology, Hospital Nova of Central Finland, Well Being Services County of Central Finland, 40620, Jyväskylä, Finland
| | - Erkki-Ville Wirta
- Faculty of Medicine and Health Technology, Tampere University and TAYS Cancer Center, Tampere University Hospital, 33520, Tampere, Finland
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital and TAYS Cancer Centre, 33520, Tampere, Finland
| | - Toni T Seppälä
- Department of Gastrointestinal Surgery, Helsinki University Central Hospital, University of Helsinki, 00290, Helsinki, Finland
- Applied Tumor Genomics, Research Program Unit, University of Helsinki, 00290, Helsinki, Finland
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital and TAYS Cancer Centre, 33520, Tampere, Finland
| | - Eero Sihvo
- Central Hospital of Central Finland, 40014, Jyväskylä, Finland
| | - Fredrik Yannopoulos
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Department of Cardiothoracic Surgery, Oulu University Hospital, Oulu, Finland
| | - Olli Helminen
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Juha P Väyrynen
- Translational Medicine Research Unit, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
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Sarkki S, Haanpää O, Heikkinen HI, Hiedanpää J, Kikuchi K, Räsänen A. Mainstreaming nature-based solutions through five forms of scaling: Case of the Kiiminkijoki River basin, Finland. Ambio 2024; 53:212-226. [PMID: 37874454 PMCID: PMC10774499 DOI: 10.1007/s13280-023-01942-0] [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] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/16/2023] [Accepted: 09/20/2023] [Indexed: 10/25/2023]
Abstract
Nature-based solutions (NBS) are considered as means to tackle climate change and biodiversity loss while simultaneously enhancing human well-being. Yet, it is still poorly understood how NBS could be mainstreamed. We address this gap by proposing a framework on NBS and employing it in Finland's Kiiminkijoki River basin through participatory workshops and a questionnaire. We examine socio-environmental challenges and visions, existing and emerging NBS to reach the visions, and ways to scale-up NBS to a river basin level. In the river basin, water quality is the priority challenge, due to its relationships with local culture, climate change, and biodiversity. Our results consider how (1) to ensure the relevance of NBS for local actors, (2) instrumental, intrinsic, and relational value perspectives can be enhanced simultaneously by NBS, and (3) site specific NBS can be mainstreamed (i.e., by scaling up, down, out, in, deep) to the river basin level and beyond.
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Affiliation(s)
- Simo Sarkki
- Cultural Anthropology, University of Oulu, PO Box 1000, 90014, Oulu, Finland.
- Max Weber Centre for Advanced Cultural and Social Studies, Erfurt University, Erfurt, Germany.
| | - Olli Haanpää
- Cultural Anthropology, University of Oulu, PO Box 1000, 90014, Oulu, Finland
| | - Hannu I Heikkinen
- Cultural Anthropology, University of Oulu, PO Box 1000, 90014, Oulu, Finland
| | - Juha Hiedanpää
- Natural Resources Institute Finland (Luke), Itäinen Pitkäkatu 4a, 20520, Turku, Finland
| | - Karoliina Kikuchi
- Cultural Anthropology, University of Oulu, PO Box 1000, 90014, Oulu, Finland
| | - Aleksi Räsänen
- Natural Resources Institute Finland (Luke), Paavo Havaksen Tie 3, 90570, Oulu, Finland
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Zhao S, Hörkkö S, Savolainen MJ, Koivukangas V, Mäkinen VP, Ala-Korpela M, Hukkanen J. Short-Term Metabolic Changes and Their Physiological Mediators in the Roux-en-Y Gastric Bypass Bariatric Surgery. Obes Surg 2024; 34:625-634. [PMID: 38191968 PMCID: PMC10810963 DOI: 10.1007/s11695-023-07042-y] [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: 11/08/2023] [Revised: 12/18/2023] [Accepted: 12/28/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND The Roux-en-Y gastric bypass (RYGB) is a common bariatric surgery to treat obesity. Its metabolic consequences are favourable and long-term clinical corollaries beneficial. However, detailed assessments of various affected metabolic pathways and their mediating physiological factors are scarce. METHODS We performed a clinical study with 30 RYGB patients in preoperative and 6-month postoperative visits. NMR metabolomics was applied to profiling of systemic metabolism via 80 molecular traits, representing core cardiometabolic pathways. Glucose, glycated haemoglobin (HbA1c), insulin, and apolipoprotein B-48 were measured with standard assays. Logistic regression models of the surgery effect were used for each metabolic measure and assessed individually for multiple mediating physiological factors. RESULTS Changes in insulin concentrations reflected those of BMI with robust decreases due to the surgery. Six months after the surgery, triglycerides, remnant cholesterol, and apolipoprotein B-100 were decreased -24%, -18%, and -14%, respectively. Lactate and glycoprotein acetyls, a systemic inflammation biomarker, decreased -16% and -9%, respectively. The concentrations of branched-chain (BCAA; leucine, isoleucine, and valine) and aromatic (phenylalanine and tyrosine) amino acids decreased after the surgery between -17% for tyrosine and -23% for leucine. Except for the most prominent metabolic changes observed for the BCAAs, all changes were almost completely mediated by weight change and insulin. Glucose and type 2 diabetes had clearly weaker effects on the metabolic changes. CONCLUSIONS The comprehensive metabolic analyses indicate that weight loss and improved insulin sensitivity during the 6 months after the RYGB surgery are the key physiological outcomes mediating the short-term advantageous metabolic effects of RYGB. The clinical study was registered at ClinicalTrials.gov as NCT01330251.
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Affiliation(s)
- Siyu Zhao
- Systems Epidemiology, Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Sohvi Hörkkö
- Medical Microbiology and Immunology, Research Unit of Biomedicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Markku J Savolainen
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Research Unit of Internal Medicine, University of Oulu, Oulu, Finland
| | - Vesa Koivukangas
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Department of Surgery, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Ville-Petteri Mäkinen
- Systems Epidemiology, Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Mika Ala-Korpela
- Systems Epidemiology, Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland.
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland.
- Biocenter Oulu, University of Oulu, Oulu, Finland.
- NMR Metabolomics Laboratory, School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.
| | - Janne Hukkanen
- Biocenter Oulu, University of Oulu, Oulu, Finland.
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
- Research Unit of Internal Medicine, University of Oulu, Oulu, Finland.
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Jukkola J, Kaakinen M, Singh A, Moradi S, Ferdinando H, Myllylä T, Kiviniemi V, Eklund L. Blood pressure lowering enhances cerebrospinal fluid efflux to the systemic circulation primarily via the lymphatic vasculature. Fluids Barriers CNS 2024; 21:12. [PMID: 38279178 PMCID: PMC10821255 DOI: 10.1186/s12987-024-00509-9] [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: 11/16/2023] [Accepted: 01/03/2024] [Indexed: 01/28/2024] Open
Abstract
BACKGROUND Inside the incompressible cranium, the volume of cerebrospinal fluid is directly linked to blood volume: a change in either will induce a compensatory change in the other. Vasodilatory lowering of blood pressure has been shown to result in an increase of intracranial pressure, which, in normal circumstances should return to equilibrium by increased fluid efflux. In this study, we investigated the effect of blood pressure lowering on fluorescent cerebrospinal fluid tracer absorption into the systemic blood circulation. METHODS Blood pressure lowering was performed by an i.v. administration of nitric oxide donor (sodium nitroprusside, 5 µg kg-1 min-1) or the Ca2+-channel blocker (nicardipine hydrochloride, 0.5 µg kg-1 min-1) for 10, and 15 to 40 min, respectively. The effect of blood pressure lowering on cerebrospinal fluid clearance was investigated by measuring the efflux of fluorescent tracers (40 kDa FITC-dextran, 45 kDa Texas Red-conjugated ovalbumin) into blood and deep cervical lymph nodes. The effect of nicardipine on cerebral hemodynamics was investigated by near-infrared spectroscopy. The distribution of cerebrospinal fluid tracers (40 kDa horse radish peroxidase,160 kDa nanogold-conjugated IgG) in exit pathways was also analyzed at an ultrastructural level using electron microscopy. RESULTS Nicardipine and sodium nitroprusside reduced blood pressure by 32.0 ± 19.6% and 24.0 ± 13.3%, while temporarily elevating intracranial pressure by 14.0 ± 7.0% and 18.2 ± 15.0%, respectively. Blood pressure lowering significantly increased tracer accumulation into dorsal dura, deep cervical lymph nodes and systemic circulation, but reduced perivascular inflow along penetrating arteries in the brain. The enhanced tracer efflux by blood pressure lowering into the systemic circulation was markedly reduced (- 66.7%) by ligation of lymphatic vessels draining into deep cervical lymph nodes. CONCLUSIONS This is the first study showing that cerebrospinal fluid clearance can be improved with acute hypotensive treatment and that the effect of the treatment is reduced by ligation of a lymphatic drainage pathway. Enhanced cerebrospinal fluid clearance by blood pressure lowering may have therapeutic potential in diseases with dysregulated cerebrospinal fluid flow.
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Affiliation(s)
- Jari Jukkola
- Oulu Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Mika Kaakinen
- Oulu Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Abhishek Singh
- Oulu Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Sadegh Moradi
- Opto-Electronics and Measurement Technique Research Unit, Infotech Oulu, University of Oulu, Oulu, Finland
| | - Hany Ferdinando
- Research Unit of Health Science and Technology, University of Oulu, Oulu, Finland
| | - Teemu Myllylä
- Opto-Electronics and Measurement Technique Research Unit, Infotech Oulu, University of Oulu, Oulu, Finland
- Research Unit of Health Science and Technology, University of Oulu, Oulu, Finland
| | - Vesa Kiviniemi
- Oulu Functional NeuroImaging (OFNI), Diagnostic Imaging, Medical Research Center (MRC), Oulu University Hospital, Oulu, Finland
- Research Unit of Health Sciences and Technology (HST), Faculty of Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Lauri Eklund
- Oulu Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland.
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Nguyen MP, Lehosmaa K, Toth K, Koskimäki JJ, Häggman H, Pirttilä AM. Weather in two climatic regions shapes the diversity and drives the structure of fungal endophytic community of bilberry (Vaccinium myrtillus L.) fruit. Environ Microbiome 2024; 19:7. [PMID: 38254194 PMCID: PMC10802051 DOI: 10.1186/s40793-024-00551-y] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
BACKGROUND Bilberry (Vaccinium myrtillus L.) is one of the most important economic and natural resources in Northern Europe. Despite its importance, the endophytic fungal community of the fruits has rarely been investigated. Biogeographic patterns and determinants of the fungal diversity in the bilberry fruit are poorly understood, albeit fungal endophytes can have a close relationship with the host plants. Here, we investigated the effect of climatic regions, and their weather conditions within growth season and soil properties on fungal endophytic communities of bilberry fruits collected from northern and southern regions of Finland using high-throughput sequencing technology targeting the internal transcribed spacer 2 ribosomal DNA region for fungi. RESULTS Species richness and beta diversity (variation in community structure) were higher in the southern compared to the studied northern region. The weather condition of the growth season drove both fungal richness and community structure. Furthermore, abundance of the genera Venturia, Cladosporium, and Podosphaera was influenced by the weather, being different between the south and north regions. CONCLUSIONS We conclude that diversity and assembly structure of the fungal endophytes in bilberry fruits follow similar patterns as for foliar fungal endophytes, being shaped by various environmental factors, such as the climate and surrounding vegetation.
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Affiliation(s)
- Minh-Phuong Nguyen
- Ecology and Genetics Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
| | - Kaisa Lehosmaa
- Ecology and Genetics Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland.
| | - Katalin Toth
- Inari Agriculture Nv, Industriepark Zwijnaarde 7a, 9052, Ghent, Belgium
| | - Janne J Koskimäki
- Ecology and Genetics Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
| | - Hely Häggman
- Ecology and Genetics Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
| | - Anna Maria Pirttilä
- Ecology and Genetics Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
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Ahmad N, Samoylenko A, Abene I, Abdelrady E, Zhyvolozhnyi A, Makieieva O, Bart G, Skovorodkin I, Vainio SJ. Generation of novel in vitro flexible kidney organoid model to investigate the role of extracellular vesicles in induction of nephrogenesis. Cell Commun Signal 2023; 21:358. [PMID: 38110951 PMCID: PMC10726558 DOI: 10.1186/s12964-023-01374-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: 09/03/2023] [Accepted: 10/29/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND During kidney organogenesis, metanephric mesenchyme (MM) and ureteric bud (UB) interact reciprocally to form nephrons. Signaling stimuli involved in these interactions include Wnts, growth factors and nano/micro particles. How UB and MM are interacting is not completely understood. Our study investigated the signaling and communication via extracellular vesicles (EVs) during nephrogenesis. Embryonic day (E) 11.5 mouse kidney UB and MM produce very low number of primary cells that have limited ability for proliferation in culture. Such limitations obstruct studying the role of EVs in induction of nephrogenesis. These issues necessitate to generate a nephrogenesis model allowing to study the comprehensive role of EVs during nephrogenesis. RESULTS Our study generated a UB derived cell line-based in vitro flexible model of nephrogenesis allowing expandable cell culturing, in addition to performing characterization, tracking and blocking of EVs. UB cell line aggregation with E11.5 MM cells induced the formation of segmented nephrons. Most efficient nephrogenesis was obtained by the co-culturing of 30,000 cells of UB cell line with 50,000 MM cells. Results revealed that both the UB and the MM secrete EVs during nephrogenesis. UB cell line derived EVs were characterized by their size, morphology and expression of markers (CD63, TSG101, CD9 and CD81). Furthermore, proteomics data of UB cell line-derived EVs revealed large number of proteins involved in nephrogenesis-related signaling pathways. Palmitoylated GFP-tagged EVs from UB cell line were found in the nephron formation zone in the developing kidney organoid. UB cell line derived EVs did not induce nephrogenesis in MM cells but significantly contributed to the survival and nephrogenesis-competency of MM cells. The secretion of EVs was continuously inhibited during the ongoing nephrogenesis by the knockdown of RalA and RalB gene expression using short hairpin RNAs. This inhibition partially impaired the ability of UB cell line to induce nephrogenesis. Moreover, impaired nephrogenesis was partially rescued by the addition of EVs. CONCLUSION Our study established a novel in vitro flexible model of nephrogenesis that solved the limitations of primary embryonic kidney cells and mouse embryonic stem cell kidney organoids for the EV research. EVs were found to be an integral part of nephrogenesis process. Video Abstract.
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Affiliation(s)
- Naveed Ahmad
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland.
| | - Anatoliy Samoylenko
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Ichrak Abene
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Eslam Abdelrady
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Artem Zhyvolozhnyi
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Olha Makieieva
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Geneviève Bart
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Ilya Skovorodkin
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Seppo J Vainio
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland.
- Infotech Oulu, University of Oulu, 90014, Oulu, Finland.
- Flagship GeneCellNano, University of Oulu, 90220, Oulu, Finland.
- Kvantum Institute, University of Oulu, 90014, Oulu, Finland.
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Kaisanlahti A, Turunen J, Byts N, Samoylenko A, Bart G, Virtanen N, Tejesvi MV, Zhyvolozhnyi A, Sarfraz S, Kumpula S, Hekkala J, Salmi S, Will O, Korvala J, Paalanne N, Erawijantari PP, Suokas M, Medina TP, Vainio S, Medina OP, Lahti L, Tapiainen T, Reunanen J. Maternal microbiota communicates with the fetus through microbiota-derived extracellular vesicles. Microbiome 2023; 11:249. [PMID: 37953319 PMCID: PMC10642029 DOI: 10.1186/s40168-023-01694-9] [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] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 10/09/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Reports regarding the presence of bacteria in the fetal environment remain limited and controversial. Recently, extracellular vesicles secreted by the human gut microbiota have emerged as a novel mechanism for host-microbiota interaction. We aimed to investigate the presence of bacterial extracellular vesicles in the fetal environment during healthy pregnancies and determine whether extracellular vesicles derived from the gut microbiota can cross biological barriers to reach the fetus. RESULTS Bacterial extracellular vesicles were detectable in the amniotic fluid of healthy pregnant women, exhibiting similarities to extracellular vesicles found in the maternal gut microbiota. In pregnant mice, extracellular vesicles derived from human maternal gut microbiota were found to reach the intra-amniotic space. CONCLUSIONS Our findings reveal maternal microbiota-derived extracellular vesicles as an interaction mechanism between the maternal microbiota and fetus, potentially playing a pivotal role in priming the prenatal immune system for gut colonization after birth. Video Abstract.
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Affiliation(s)
- Anna Kaisanlahti
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland.
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland.
| | - Jenni Turunen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
| | - Nadiya Byts
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Anatoliy Samoylenko
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Genevieve Bart
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Nikke Virtanen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Mysore V Tejesvi
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Ecology and Genetics, Faculty of Science, University of Oulu, 90570, Oulu, Finland
| | - Artem Zhyvolozhnyi
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sonia Sarfraz
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sohvi Kumpula
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Jenni Hekkala
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Sonja Salmi
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Olga Will
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
| | - Johanna Korvala
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
| | - Niko Paalanne
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, 90220, Oulu, Finland
| | | | - Marko Suokas
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
| | - Tuula Peñate Medina
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
- Institute for Experimental Cancer Research, Kiel University, 24105, Kiel, Germany
| | - Seppo Vainio
- Laboratory of Developmental Biology, Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220, Oulu, Finland
- Kvantum Institute, University of Oulu, 90570, Oulu, Finland
| | - Oula Peñate Medina
- Section Biomedical Imaging, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein Campus Kiel, Kiel University, 24105, Kiel, Germany
- Institute for Experimental Cancer Research, Kiel University, 24105, Kiel, Germany
- Lonza Netherlands B.V., 6167 RB, Geleen, Netherlands
| | - Leo Lahti
- Department of Computing, University of Turku, 20014, Turku, Finland
| | - Terhi Tapiainen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Clinical Medicine, University of Oulu, 90220, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, 90220, Oulu, Finland
| | - Justus Reunanen
- Biocenter Oulu, University of Oulu, 90220, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, 90220, Oulu, Finland
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