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Saari TJ, Raiko J, U-Din M, Niemi T, Taittonen M, Laine J, Savisto N, Haaparanta-Solin M, Nuutila P, Virtanen KA. Basal and cold-induced fatty acid uptake of human brown adipose tissue is impaired in obesity. Sci Rep 2020; 10:14373. [PMID: 32873825 PMCID: PMC7463032 DOI: 10.1038/s41598-020-71197-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 05/13/2020] [Accepted: 07/20/2020] [Indexed: 11/17/2022] Open
Abstract
Fatty acids (FA) are important substrates for brown adipose tissue (BAT) metabolism, however, it remains unclear whether there exists a difference in FA metabolism of BAT between lean and obese healthy humans. In this study we evaluated supraclavicular BAT fatty acid uptake (FAU) along with blood perfusion in lean and obese subjects during cold exposure and at room temperature using positron emission tomography (PET)/computed tomography (CT). Additionally, tissue samples were taken from supraclavicular region (typical BAT region) from a subset of subjects to evaluate histological presence of BAT. Non-shivering cold stress elevated FAU and perfusion of BAT in lean, but not in obese subjects. Lean subjects had greater FAU in BAT compared to obese subjects during cold exposure and interestingly also at room temperature. The higher BAT FAU was related to younger age and several indicators of superior systemic metabolic health. The subjects who manifested BAT histologically had several folds higher BAT FAU compared to subjects with no such histological manifestation. Together, obese subjects have less active tissue in supraclavicular region both in basal and cold-activated state and the FA metabolism of BAT is blunted in obesity.
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Affiliation(s)
- T J Saari
- Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland.,Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - J Raiko
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - M U-Din
- Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland.,Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - T Niemi
- Department of Surgery, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - M Taittonen
- Department of Anesthesiology, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - J Laine
- Department of Pathology, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - N Savisto
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - M Haaparanta-Solin
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland.,MediCity Research Laboratories, University of Turku, Tykistökatu 6A, 20520, Turku, Finland
| | - P Nuutila
- Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland.,Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - K A Virtanen
- Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland. .,Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, 20520, Turku, Finland. .,Institute of Public Health and Clinical Nutrition, University of Eastern Finland, PL 1627, 70211, Kuopio, Finland.
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2
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Mendez A, Seikaly H, Eurich D, Dzioba A, Aalto D, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Development of a Patient-Centered Functional Outcomes Questionnaire in Head and Neck Cancer. JAMA Otolaryngol Head Neck Surg 2020; 146:437-443. [PMID: 32271362 DOI: 10.1001/jamaoto.2019.4788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Incorporation of patient perspectives, or patient-reported outcomes, in functional outcome measures has been gaining prominence in the literature on reconstructive surgery. Objective To create and validate an instrument for measuring the main functional areas of concern for patients with head and neck cancer. Design, Setting, and Participants This 4-phase mixed-methods qualitative study was conducted from July 1, 2013, to June 30, 2016, in a quaternary head and neck oncology center in Edmonton, Alberta, Canada. Patients were recruited from 3 Head and Neck Research Network sites: University of Alberta (Edmonton, Canada), Mount Sinai Health Network (New York, New York), and University of Turku Hospital (Turku, Finland). The inclusion criteria included 18 years of age or older, diagnosis of squamous cell carcinoma involving the subsites of the head and neck (ie, oral cavity, oropharynx, hypopharynx, and larynx), and at least 1 year since treatment completion. Those patients who were undergoing additional active treatment or with evidence of disease recurrence were excluded. Data were analyzed from July 1, 2013, to June 30, 2016. Main Outcomes and Measures The primary outcome measures were the clinical correlation of the Edmonton-33 instrument scores with swallowing, speech, dry mouth, and chewing assessment outcomes. Results In total, 10 patients with head and neck cancer (mean age, 59.6 years; 6 men [60%]) were included in phase 1 of the study, 5 patients (mean age, 55.2 years) were included in phase 2, 10 patients were included in phase 3, and 25 patients with head and neck cancer (mean age, 62.6 years; 14 men [56%]) participated in the phase 4 validation. The Edmonton-33 instrument scores correlated strongly with the swallowing scores of the MD Anderson Dysphagia Inventory (r = 0.77; 95% CI, 0.49-1.0), the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Head and Neck 35 (EORTC QLQ-H&N35) (r = -0.73; 95% CI, -1.0 to -0.44), and the modified barium swallow test (r = -0.60; 95% CI, -0.94 to -0.25). The instrument scores were also strongly correlated with the Speech Handicap Index scores (r = -0.64; 95% CI, -0.97 to -0.31), word intelligibility scores (r = 0.61; 95% CI, 0.27-0.95), and sentence intelligibility scores (r = 0.55; 95% CI, 0.19-0.91). A moderate to strong correlation was observed between the Edmonton-33 instrument and the EORTC QLQ-H&N35 scores in the dry mouth (r = -0.54; 95% CI, -0.91 to -0.18) and chewing (r = -0.45; 95% CI, -0.84 to -0.06) domains. The factor loading values for the domains of swallowing, speech, dry mouth, and chewing were all greater than 0.3. The mean factor loading values for the items related to swallowing were 0.71 (95% CI, 0.62-0.80) and for the items related to speech were 0.76 (95% CI, 0.72-0.80). The mean factor loading values for the items related to dry mouth were 0.71 (95% CI, 0.59-0.83) and for those related to chewing were 0.77 (95% CI, 0.69-0.85). Conclusions and Relevance The Edmonton-33 appears to be a validated instrument that will allow patients with head and neck cancer to assess and report their own functional outcomes. It could serve as a single comprehensive measure for functional outcomes.
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Affiliation(s)
- Adrian Mendez
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Department of Otolaryngology-Head and Neck Surgery, Western University, London, Ontario, Canada
| | - Hadi Seikaly
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada
| | - Dean Eurich
- School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Agnieszka Dzioba
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Martin Osswald
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Jeffrey R Harris
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Daniel A O'Connell
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Erika Rauscher
- Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Daniel Buchbinder
- Thyroid, Head and Neck Cancer Foundation, New York, New York.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, New York
| | - Devin Okay
- Thyroid, Head and Neck Cancer Foundation, New York, New York.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, New York
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
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3
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Laine J, Hautefort C, Attye A, Guichard JP, Herman P, Houdart E, Fraysse MJ, Fraysse B, Gillibert A, Kania R, Eliezer M. MRI evaluation of the endolymphatic space in otosclerosis and correlation with clinical findings. Diagn Interv Imaging 2020; 101:537-545. [PMID: 32253140 DOI: 10.1016/j.diii.2020.03.009] [Citation(s) in RCA: 9] [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: 02/17/2020] [Revised: 03/16/2020] [Accepted: 03/19/2020] [Indexed: 12/20/2022]
Abstract
PURPOSE The purpose of this study was to investigate the clinical features of ears with otosclerosis and their correlation with endolymphatic hydrops and blood-labyrinth barrier (BLB) impairment on 3T magnetic resonance imaging (MRI). MATERIALS AND METHODS This was a single-center retrospective imaging study. Thirty-nine ears from 29 patients (17 men, 12 women; mean age 52±12 [SD] years; range 27-74 years) with non-operated otosclerosis were included. All patients underwent three-dimensional fluid attenuated inversion recovery (FLAIR) MRI sequences performed 4hours after the intravenous administration of a single dose of gadolinium-based contrast material. MRI examinations were analyzed by two radiologists for the presence of saccular hydrops (SH) and BLB impairment. Results of MRI examinations were compared with clinical findings, hearing levels and extent of otosclerotic lesions based on high-resolution computed tomography findings. BLB impairment was evaluated using the signal intensity ratio, ratio of intensities between the basal turn of the cochlea and the medulla. RESULTS SH was observed in 1/39 (3%) otosclerotic ears and BLB impairment in 8/39 (21%) while 8/29 patients with otosclerosis (28%) had vertigo. No significant associations were found between SH or BLB impairment on MRI, and the presence of vertigo or the degree of sensorineural hearing loss. CONCLUSION Clinical manifestations of otosclerosis (sensorineural hearing loss and rotatory vertigo) were not significantly associated with MRI findings such as BLB impairment and endolymphatic hydrops. SH was only observed in one patient with obstruction of the vestibular aqueduct by an otosclerotic focus.
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Affiliation(s)
- J Laine
- Department of Neuroradiology, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France
| | - C Hautefort
- Department of Head & Neck Surgery, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France
| | - A Attye
- Department of Neuroradiology and MRI, Grenoble Alpes University Hospital, 38000 Grenoble, France
| | - J-P Guichard
- Department of Neuroradiology, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France
| | - P Herman
- Department of Head & Neck Surgery, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France; Université de Paris, Diderot-Paris 7, 75010 Paris, France
| | - E Houdart
- Department of Neuroradiology, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France; Université de Paris, Diderot-Paris 7, 75010 Paris, France
| | - M-J Fraysse
- Department of Head & Neck Surgery, Toulouse University Hospital, 31300 Toulouse, France
| | - B Fraysse
- Department of Head & Neck Surgery, Toulouse University Hospital, 31300 Toulouse, France
| | - A Gillibert
- Department of Biostatistics, Rouen University Hospital, 76000 Rouen, France
| | - R Kania
- Department of Head & Neck Surgery, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France; Université de Paris, Diderot-Paris 7, 75010 Paris, France
| | - M Eliezer
- Department of Neuroradiology, Lariboisière University Hospital, Assistance Publique-Hopitaux de Paris, 75010 Paris, France; Université de Paris, Diderot-Paris 7, 75010 Paris, France.
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4
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Morton D, Gallucci G, Lin WS, Pjetursson B, Polido W, Roehling S, Sailer I, Aghaloo T, Albera H, Bohner L, Braut V, Buser D, Chen S, Dawson A, Eckert S, Gahlert M, Hamilton A, Jaffin R, Jarry C, Karayazgan B, Laine J, Martin W, Rahman L, Schlegel A, Shiota M, Stilwell C, Vorster C, Zembic A, Zhou W. Group 2 ITI Consensus Report: Prosthodontics and implant dentistry. Clin Oral Implants Res 2019; 29 Suppl 16:215-223. [PMID: 30328196 DOI: 10.1111/clr.13298] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [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: 05/18/2018] [Accepted: 05/26/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Working Group 2 was convened to address topics relevant to prosthodontics and dental implants. Systematic reviews were developed according to focused questions addressing (a) the number of implants required to support fixed full-arch restorations, (b) the influence of intentionally tilted implants compared to axial positioned implants when supporting fixed dental prostheses (FDPs), (c) implant placement and loading protocols, (d) zirconia dental implants, (e) zirconia and metal ceramic implant supported single crowns and (f) zirconia and metal ceramic implant supported FDPs. MATERIALS AND METHODS Group 2 considered and discussed information gathered in six systematic reviews. Group participants discussed statements developed by the authors and developed consensus. The group developed and found consensus for clinical recommendations based on both the statements and the experience of the group. The consensus statements and clinical recommendations were presented to the plenary (gathering of all conference attendees) and discussed. Final versions were developed after consensus was reached. RESULTS A total of 27 consensus statements were developed from the systematic reviews. Additionally, the group developed 24 clinical recommendations based on the combined expertise of the participants and the developed consensus statements. CONCLUSIONS The literature supports the use of various implant numbers to support full-arch fixed prostheses. The use of intentionally tilted dental implants is indicated when appropriate conditions exist. Implant placement and loading protocols should be considered together when planning and treating patients. One-piece zirconia dental implants can be recommended when appropriate clinical conditions exist although two-piece zirconia implants should be used with caution as a result of insufficient data. Clinical performance of zirconia and metal ceramic single implant supported crowns is similar and each demonstrates significant, though different, complications. Zirconia ceramic FDPs are less reliable than metal ceramic. Implant supported monolithic zirconia prostheses may be a future option with more supporting evidence.
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Affiliation(s)
- Dean Morton
- Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana
| | - German Gallucci
- Department of Restorative Dentistry, Harvard School of Dental Medicine, Boston, Massachusetts
| | - Wei-Shao Lin
- Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana
| | - Bjarni Pjetursson
- Department of Reconstructive Dentistry, Faculty of Odontology, University of Iceland, Reykjavik, Iceland
| | - Waldemar Polido
- Department of Oral and Maxillofacial Surgery, Indiana University School of Dentistry, Indianapolis, Indiana
| | - Stefan Roehling
- Clinic for Oral and Cranio-Maxillofacial Surgery, High-Tech Research Center, University of Basel, Basel, Switzerland
| | - Irena Sailer
- Division of Fixed Prosthodontics and Biomaterials, University of Geneva, Geneva, Switzerland
| | - Tara Aghaloo
- Department of Oral and Maxillofacial Surgery, UCLA School of Dentistry, Los Angeles, California
| | - Hugo Albera
- Faculty of Dentistry, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Lauren Bohner
- Department of Prosthodontics, University of Sao Paulo, Sao Paulo, Brazil
| | - Vedrana Braut
- Department of Oral Surgery and Stomatology, University of Bern, Bern, Switzerland.,Private Practice, Rijeka, Croatia
| | - Daniel Buser
- Department of Oral Surgery and Stomatology, University of Bern, Bern, Switzerland
| | - Stephen Chen
- Private Practice, University of Melbourne, Melbourne, Vic., Australia
| | | | - Steven Eckert
- Department of Dental Specialties, Mayo Clinic School of Medicine, Rochester, Minnesota
| | - Michael Gahlert
- Private Practice, Munich, Germany.,Clinic for Oral and Cranio-Maxillofacial Surgery, High-Tech Research Center, University of Basel, Basel, Switzerland
| | - Adam Hamilton
- Department of Restorative Dentistry, Harvard School of Dental Medicine, Boston, Massachusetts
| | | | | | - Banu Karayazgan
- Department of Prosthodontics, Okan University, Istanbul, Turkey
| | - Juhani Laine
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Yurku, Finland
| | - William Martin
- Department of Oral and Maxillofacial Surgery, University of Florida, Gainesville, Florida
| | | | - Andreas Schlegel
- Private Practice, Munich, Germany.,Department of Maxillofacial Surgery, University of Erlangen, Erlangen, Germany
| | - Makato Shiota
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Charlotte Stilwell
- Private Practice, London, UK.,Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
| | | | - Anja Zembic
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, University of Zurich, Zurich, Switzerland
| | - Wenjie Zhou
- Department of Restorative Dentistry, Harvard School of Dental Medicine, Boston, Massachusetts.,Ninth People's Hospital, Shanghai, China
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5
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Laine J, Baltar V, Vineis P. Comparison of mediation methods for causal inference of socioeconomic status diet, and mortality. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Rissa E, Kurki T, Laine J, Närhi T. Prosthetic Rehabilitation with Implant-Supported Mandibular Overdenture after Partial Glossectomy and Radiation Therapy: A Case Report. Eur J Prosthodont Restor Dent 2018; 26:95-99. [PMID: 29797848 DOI: 10.1922/ejprd_01789rissa05] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Implant-supported overdenture is a well-established treatment option for many patients who have functional problems with conventional dentures. It may be primary choice for patients with altered jaw anatomy, neuromuscular disorders, pronounced gag reflex, severe residual ridge resorption and oral tissue defects. In this article we describe a case report, where tongue cancer patients occlusion was rehabilitated with an implantretained overdenture. In 2001 patient was operated for squamous cell carcinoma on the left side of the tongue. Before preoperative radiation therapy, small residual mandibular dentition was removed because of its poor prognosis. Radiation dose on mandible was 57-66 Gy. After tumor surgery patient received conventional complete dentures. Ten years later, the patient was referred again to the Turku University Central Hospital due to constant ulceration under the mandibular denture. The residual ridge of the mandible was severely resorbed. Patient's existing lower complete denture was replaced with a milled bar-retained overdenture on four implants. Treatment turned out to be challenging due to severely restricted tongue movement and tissue defects.
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Affiliation(s)
- E Rissa
- Clinic of Oral and Maxillofacial Diseases, Turku University Central Hospital, Turku, FInland
| | - T Kurki
- Clinic of Oral and Maxillofacial Diseases, Turku University Central Hospital, Turku, FInland
| | - J Laine
- Clinic of Oral and Maxillofacial Diseases, Turku University Central Hospital, Turku, FInland
| | - T Närhi
- Department of Prosthetic Dentistry and Stomatognathic Physiology, University of Turku, Finland.,Clinic of Oral and Maxillofacial Diseases, Turku University Central Hospital, Turku, FInland
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7
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Dzioba A, Aalto D, Papadopoulos-Nydam G, Seikaly H, Rieger J, Wolfaardt J, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Correction to: Functional and quality of life outcomes after partial glossectomy: a multi-institutional longitudinal study of the head and neck research network. J Otolaryngol Head Neck Surg 2017; 46:59. [PMID: 28982382 PMCID: PMC5628416 DOI: 10.1186/s40463-017-0236-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Agnieszka Dzioba
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada. .,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Georgina Papadopoulos-Nydam
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jana Rieger
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Johan Wolfaardt
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jeffrey R Harris
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Daniel A O'Connell
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Erika Rauscher
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Daniel Buchbinder
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Devin Okay
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
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Dzioba A, Aalto D, Papadopoulos-Nydam G, Seikaly H, Rieger J, Wolfaardt J, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Functional and quality of life outcomes after partial glossectomy: a multi-institutional longitudinal study of the head and neck research network. J Otolaryngol Head Neck Surg 2017; 46:56. [PMID: 28870248 PMCID: PMC5583999 DOI: 10.1186/s40463-017-0234-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 03/22/2017] [Accepted: 08/28/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND While aggressive treatment for oral cancer may optimize survival, decrements in speech and swallowing function and quality of life often result. This exploratory study investigated how patients recover their communicative function, swallowing ability, and quality of life after primary surgery [with or without adjuvant (chemo)radiation therapy] for tongue cancer over the course of the first year post-operation. METHODS Patients treated for oral cancer at three institutions (University of Alberta Hospital, Mount Sinai Beth Israel Medical Center, and Turku University Hospital) were administered patient-reported outcomes assessing speech [Speech Handicap Index (SHI)], swallowing [(M.D. Anderson Dysphagia Inventory (MDADI)] and quality of life [European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Head and Neck Module (EORTC-H&N35)]. Outcome measures were completed pre-operatively and at 1-, 6-, and 12-months post-operatively. RESULTS One hundred and seventeen patients undergoing partial glossectomy with reconstruction participated in this study. Results indicated no significant differences in swallowing function (MDADI and EORTC-H&N35 subscales) between baseline and 6 months post-surgery and no significant differences in speech function (SHI subscales) between baseline and 1 year post-surgery. Most quality of life domains (EORTC-H&N35 subscales) returned to baseline levels by 1 year post-operation, while difficulties with dry mouth and sticky saliva persisted. A clear time trend of adjuvant (chemo)radiation therapy negatively affecting dry mouth scores over time was identified in this study, while negative independent effects of chemoradiation on MDADI swallowing, and EORTC-H&N35 swallowing, eating, and opening mouth subscales were found. CONCLUSIONS Assessment time influenced patient-reported speech, swallowing, and quality of life outcomes, while treatment (by time) effects were found for only swallowing and quality of life outcomes. Results of the present study will help guide clinical care and will be useful for patient counseling on expected short and long-term functional and quality of life outcomes of surgical and adjuvant treatment for oral cavity cancer.
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Affiliation(s)
- Agnieszka Dzioba
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada. .,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Georgina Papadopoulos-Nydam
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jana Rieger
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Johan Wolfaardt
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jeffrey R Harris
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Daniel A O'Connell
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Erika Rauscher
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Daniel Buchbinder
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Devin Okay
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
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Laine J, D'Souza A, Siddiqui S, Sayko O, Brazauskas R, Eickmeyer SM. Rehabilitation referrals and outcomes in the early period after hematopoietic cell transplantation. Bone Marrow Transplant 2015; 50:1352-7. [PMID: 26146804 DOI: 10.1038/bmt.2015.141] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 04/14/2015] [Accepted: 05/12/2015] [Indexed: 11/09/2022]
Abstract
In a cohort of inpatient hematopoietic cell transplantation (HCT) recipients, we assessed patterns of referral to rehabilitation treatment, functional performance and short-term outcomes in patients who received post-transplant rehabilitation in comparison with those who did not. Among 201 first-time HCT recipients, 53 (26%) were referred to an inpatient rehabilitation provider, had an assessment of functional performance using the Functional Independence Measure scale and underwent rehabilitation treatments to address functional needs. Patients who received rehabilitation therapy were more likely to be females (P=0.02), older than 60 years of age (P=0.0146), employed (P=0.01), have hypertension (P=0.02), peripheral vascular disease (P=0.01) and pre-transplant Karnofsky Performance Score (KPS) <90 (P=0.02). Mean functional performance scores for transfers and ambulation increased significantly in the group with rehabilitation interventions (P=0.0022 and P<0.0001, respectively). There was no difference between the groups that did and did not receive rehabilitation treatments in 30-day re-admission rates. Patients who are 60 years of age or older, with pre-transplant KPS<90, and pre-transplant hypertension were more likely to be referred for rehabilitation treatments in the early period after HCT. Future studies should be designed to determine the optimal timing and cost effectiveness of functional assessment and rehabilitation treatments in this high-risk population.
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Affiliation(s)
- J Laine
- Medical College of Wisconsin, Milwaukee, WI, USA
| | - A D'Souza
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - S Siddiqui
- Wheaton Franciscan-St Joseph Campus, Milwaukee, WI, USA
| | - O Sayko
- Department of Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee, WI, USA
| | - R Brazauskas
- Division of Biostatistics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - S M Eickmeyer
- Department of Rehabilitation Medicine, The University of Kansas, Kansas City, KS, USA
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Raiko J, Holstila M, Virtanen KA, Orava J, Saunavaara V, Niemi T, Laine J, Taittonen M, Borra RJH, Nuutila P, Parkkola R. Brown adipose tissue triglyceride content is associated with decreased insulin sensitivity, independently of age and obesity. Diabetes Obes Metab 2015; 17:516-9. [PMID: 25586670 DOI: 10.1111/dom.12433] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 10/22/2014] [Revised: 12/16/2014] [Accepted: 12/31/2014] [Indexed: 02/03/2023]
Abstract
The aim of the present study was to determine whether single-voxel proton magnetic resonance spectroscopy ((1)H-MRS) can non-invasively assess triglyceride content in both supraclavicular fat depots and subcutaneous white adipose tissue (WAT) to determine whether these measurements correlate to metabolic variables. A total of 25 healthy volunteers were studied using (18)F-fluorodeoxyglucose positron emission tomography (PET) and (15)O-H2O PET perfusion during cold exposure, and (1)H-MRS at ambient temperature. Image-guided biopsies were collected from nine volunteers. The supraclavicular triglyceride content determined by (1)H-MRS varied between 60 and 91% [mean ± standard deviation (s.d.) 77 ± 10%]. It correlated positively with body mass index, waist circumference, subcutaneous and visceral fat masses and 8-year diabetes risk based on the Framingham risk score and inversely with HDL cholesterol and insulin sensitivity (M-value; euglycaemic-hyperinsulinaemic clamp). Subcutaneous WAT had a significantly higher triglyceride content, 76-95% (mean ± s.d. 87 ± 5%; p = 0.0002). In conclusion, the triglyceride content in supraclavicular fat deposits measured by (1)H-MRS may be an independent marker of whole-body insulin sensitivity, independent of brown adipose tissue metabolic activation.
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Affiliation(s)
- J Raiko
- Turku PET Centre, Turku University Hospital, University of Turku, Turku, Finland
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Koskinen A, Lehtoranta L, Laiho A, Laine J, Kääpä P, Soukka H. Maternal diabetes induces changes in the umbilical cord gene expression. Placenta 2015; 36:767-74. [PMID: 25935091 DOI: 10.1016/j.placenta.2015.04.004] [Citation(s) in RCA: 9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 04/06/2015] [Accepted: 04/07/2015] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Since maternal diabetes may affect fetal development and the umbilical cord provides an extension of the fetal vasculature, we decided to investigate cords' biological responses to maternal diabetic milieu. METHODS Using microarray analysis, we determined the gene expression profiles in the umbilical cords of six neonates born to type 1 diabetic mothers and in six control cords. Umbilical cord tissue was collected immediately after elective cesarean section. Expression data were confirmed by real-time polymerase chain reaction (11 genes). Additionally, the same umbilical cords were analyzed histologically. RESULTS Two hundred eighty six genes were differentially expressed in the umbilical cords from diabetic pregnancies compared to the controls (fold change ±1.5 and P < 0.01). Maternal diabetes had a major effect on the expression of genes involved in vascular development (Bone morphogenetic protein 4, Delta-like 1, and Notch homolog 4), vessel wall integrity (Collagen type VIII alpha 1, Myocyte enhancer factor 2C, and Matrix metalloproteinase 2), and vascular function (Natriuretic peptide precursor B, Endothelin 1, Endothelin receptor B, Cyclooxygenase 1, and Phosphodiesterase 5A). Maternal diabetes was associated with thicker umbilical vein intima-media layers and larger umbilical vein and artery intima-media areas compared to the controls. DISCUSSION Maternal diabetic environment seems to alter umbilical cord expression of genes involved in the regulation of vascular development and function with simultaneous umbilical vessel muscle layer thickening. These alterations suggest vascular phenotypic modifications, which in turn may lead to long-term vascular consequences in various tissues in infants of diabetic mothers.
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Affiliation(s)
- A Koskinen
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland.
| | - L Lehtoranta
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Obstetrics and Gynecology, Turku University Hospital, Finland
| | - A Laiho
- Turku Centre for Biotechnology, University of Turku, Finland
| | - J Laine
- Department of Pathology, Turku University Hospital, Finland
| | - P Kääpä
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland
| | - H Soukka
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland
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Uotila T, Korpela M, Vuento R, Laine J, Lumio J, Kuusi M, Virtanen MJ, Mustonen J, Antonen J. Joint symptoms after a faecal culture positive Campylobacter infection associated with a waterborne gastroenteritis outbreak: a questionnaire study. Scand J Rheumatol 2014; 43:524-6. [PMID: 25205145 DOI: 10.3109/03009742.2014.920916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- T Uotila
- Department of Internal Medicine, Tampere University Hospital , Tampere , Finland
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Psychologic outcomes in implant prosthodontics. INT J PROSTHODONT 2014; 26:429-34. [PMID: 23998140 DOI: 10.11607/ijp.3403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Consensus regarding outcomes of the treatment of tooth loss, especially the psychologic outcomes, is needed to guide discovery of best practices and enable a better understanding of patient management for this chronic condition. This paper presents the findings of the ORONet Psychological Working Group for prosthodontics and aims to identify psychologic outcomes with properties deemed critical to meet clinical trial and clinical practice needs for the future. References obtained using a PubMed/Medline search were reviewed for clinical outcomes measures of interest. Clinical outcomes measures were judged relative to the criteria of truth, discrimination, and feasibility. Of the psychologic outcome measures identified in this systematic review, only the OHIP-14 was thought to be suitable for use in general practice and multi-institutional outcome registries and clinical trials. Development of clinically useful psychologic outcomes for future use could benefit from developmental methods and tools outlined in the patient-related outcomes field of clinical care.
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14
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Economic outcomes in prosthodontics. INT J PROSTHODONT 2014; 26:465-9. [PMID: 23998145 DOI: 10.11607/ijp.3405] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE A systematic literature review was conducted to identify the types of economic measures currently used in implant prosthodontics and determine the degree to which cost of care is considered in the context of any positive outcome of the care provided. MATERIALS AND METHODS A literature search was conducted using the following set of terms plus some additional hand searching: "dental implants" (Mesh) AND ("cost") OR "maintenance" OR "healthcare policy" OR "access to care" OR "third party" OR "economic") AND (("1995/01/01"[PDat]:'2009/12/31"[PDat]) AND (Humans[Mesh]) AND (English[lang])). RESULTS After a review of the 466 titles and abstracts identified by the search, 18 articles were accepted for further consideration, as some attempt at economic outcome measures was made. An additional four articles were identified by hand searching. The 22 accepted articles were grouped into four basic categories: (1) measure of costs of treatment (direct, indirect, and maintenance costs), (2) cost-effectiveness mathematical modeling applied to simulate the lifetime paths and cost of treatment, (3) cost-effectiveness analysis/cost minimization, and (4) willingness-to-pay, willingness-to-accept. Attempts at determining the costs of treatment varied widely. When the OMERACT filters were applied to the various measures it was felt that discrimination and/or feasibility was a problem for most of the current economic outcome measures. CONCLUSIONS Measures of cost-benefit, cost-effectiveness, and cost-utility are currently the gold standard; however, feasibility of such analyses is an issue. Collaboration with health economists to guide future research is highly recommended.
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Functional outcomes for clinical evaluation of implant restorations. INT J PROSTHODONT 2014; 26:411-8. [PMID: 23998137 DOI: 10.11607/ijp.3404] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The functional outcomes related to treating patients afflicted with tooth loss are an important hallmark in substantiating prosthodontic intervention. The Oral Rehabilitation Outcomes Network (ORONet) conducted two international workshops to develop a core set of outcome measures, including a functional domain. The process followed the general format used in the Outcome Measures in Rheumatology (OMERACT) workshops to develop consensus for clinical outcome measures in arthritis research, which included: developing a comprehensive list of potential outcomes in the literature; submitting them to a filter for validity, clinical discrimination, and feasibility; and ranking those measures meeting all the filter criteria for relative value. The search was conducted to include functional assessments of speech, swallowing, mastication, nutrition, sensation, and motor function as they relate to dental implant therapies. This literature review surveyed 173 papers that produced some result of these descriptors in the functional domain. Of these, 67 papers reported on functional assessments and further defined objective and subjective outcomes. Many of these results were patient-perceived improvements in function, while others were objective assessments based on established methodologies and instruments. Objective evaluations of masticatory function and speech may meet criteria for validity and discriminability for selected interventions, but are generally not feasible for routine use in clinical care settings. The current recommendation is to employ a well-validated survey instrument that covers mastication and speech, such as the Oral Health Impact Profile (OHIP-14, short form), recognizing that patient perceptions of function may differ from objective ability.
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Bassi F, Carr AB, Chang TL, Estafanous E, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Estafanous E, Salinas TJ, Stanford CM, Wolfaardt J. Clinical outcomes measures for assessment of longevity in the dental implant literature: ORONet approach. INT J PROSTHODONT 2013; 26:323-30. [PMID: 23837161 DOI: 10.11607/ijp.3402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The Oral Rehabilitation Outcomes Network (ORONet) Longevity Working Group undertook a search of the literature from 1995 to 2009 on randomized controlled trials related to longevity of osseointegrated implants. Outcomes measures used in these studies were identified and subjected to the OMERACT component criteria of truth, validity, and feasibility. Through this process, it was a challenge to identify clinical outcomes measures that fully met the criteria. An attenuated version of the component criteria was applied, and clinical measures were identified for implant outcomes, prosthetic outcomes, and indices. A recommendation on standardized reporting periods was also presented for future consideration. The endpoint of the evaluation process is to develop consensus on clinical outcomes measures that can be applied across broad populations for osseointegrated implant care. The present ORONet initiative represents a beginning toward continual improvement and consensus development for clinical outcomes measures for osseointegrated implants.
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Affiliation(s)
- Francesco Bassi
- Department of Biomedical Science and Human Oncology, Prosthodontic Section University of Turin, Torino, Italy
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Bassi F, Carr AB, Chang TL, Estafanous E, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Oral Rehabilitation Outcomes Network—ORONet. INT J PROSTHODONT 2013; 26:319-22. [DOI: 10.11607/ijp.3400] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lucas D, Bestion D, Coste P, Pouvreau J, Morel C, Martin A, Boucker M, Bodèle E, Schmidtke M, Scheuerer M, Smith B, Dhotre MT, Ničeno B, Galassi MC, Mazzini D, D'Auria F, Bartosiewicz Y, Seynhaeve JM, Tiselj I, Štrubelj L, Ilvonen M, Kyrki-Rajamäki R, Tanskanen V, Puustinen M, Laine J. Main results of the European project NURESIM on the CFD-modelling of two-phase Pressurized Thermal Shock (PTS). KERNTECHNIK 2013. [DOI: 10.3139/124.110041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The European Platform for NUclear REactor SIMulations, (NURESIM project 2005 – 2008) addressed the creation of a Common European Standard Software Platform for modelling, recording, and recovering computer data for nuclear reactors simulations. One work package of the project was dedicated to the analysis and improvement of CFD capabilities for the simulation of two-phase PTS problems. Some SB-LOCA scenarios lead to a situation in which the cold leg is partially or totally uncovered when the Emergency Core Cooling injection is activated. The resulting complex two phase flow can be divided in characteristic flow regions: the jet flow with a free surface between steam and water, the zone of jet impingement, the horizontal two-phase flow and the flow in the downcomer. Many phenomena have to be reflected in a simulation of each separate region, but also when the simulations are coupled reflecting the integral process which is required to predict the thermal loads at the RPV wall. After analyzing the experimental database available for CFD model development and validation and identifying shortcomings of the models different activities were dedicated to the simulation of single flow regions as well as the integral flow. Based on these experiences recommendations for the CFD-simulation of the two-phase PTS problem were obtained.
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Affiliation(s)
- D. Lucas
- Forschungszentrum Dresden-Rossendorf e.V. (FZD), Institute of Safety Research, P.O. Box 51 01 19, 01314 Dresden, Germany. E-mail:
| | - D. Bestion
- Commissariat à l'Énergie Atomique (CEA), Centre d'Études Nucléaires de Grenoble, 17 Rue des Martyrs, 38054 Grenoble, France
| | - P. Coste
- Commissariat à l'Énergie Atomique
| | | | | | | | | | - E. Bodèle
- Forschungszentrum Dresden-Rossendorf e.V
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- Lappeenranta University of Technology
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Hognas G, Tuomi S, Mattila E, Laine J, Vilkki V, Murumagi A, Edgren H, Kallioniemi O, Ivaska J. 681 Aneuploidy Facilitates Oncogenic Transformation Via Specific Genetic Alterations. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71326-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rahikka P, Syrjänen J, Vuento R, Laine J, Huttunen R. Meticillin-resistant Staphylococcus aureus (MRSA) bacteraemia in Tampere University Hospital: a case-control study, Finland October 2002 to January 2010. Euro Surveill 2011. [DOI: 10.2807/ese.16.35.19958-en] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Meticillin-resistant Staphylococcus aureus (MRSA) has emerged as a frequent pathogen in blood cultures in Pirkanmaa Hospital District (HD), Finland. To study risk factors for MRSA bacteraemia and the adequacy of empirical antimicrobial treatment, we retrospectively reviewed the hospital records of 102 patients, 51 with MRSA, and 51 with meticillin-sensitive Staphylococcus aureus (MSSA) bacteraemias respectively, who had been admitted to Tampere University Hospital in Pirkanmaa HD, from October 2002 to January 2010. For each patient with MRSA bacteraemia, one consecutively detected unmatched patient with MSSA bacteraemia was chosen as control. Patients with MRSA bacteraemias were significantly older (median age: 73 years vs 59 years, p=0.001), were more likely to have been transferred directly from another healthcare facility or were already in the hospital at the onset of bacteraemia (39/51 vs 26/51, p=0.007) and had a higher McCabe class than patients with MSSA bacteraemia (p=0.005). Patients with MRSA bacteraemia more seldom received adequate empirical antimicrobial therapy when compared to those with MSSA bacteraemia (13/51 vs 43/51, p<0.001). Of previously known MRSA carriers 10 of 29 received adequate empirical antimicrobial therapy for their condition. The percentage of MRSA bacteraemias among all S. aureus bacteraemias in Pirkanmaa HD is high compared to corresponding figures for the whole of Finland.
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Affiliation(s)
- P Rahikka
- University of Tampere Medical School, FI-33014 University of Tampere, Finland
| | - J Syrjänen
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
- University of Tampere Medical School, FI-33014 University of Tampere, Finland
| | - R Vuento
- Centre for Laboratory Medicine, Pirkanmaa Hospital District, Tampere, Finland
| | - J Laine
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - R Huttunen
- University of Tampere Medical School, FI-33014 University of Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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Rahikka P, Syrjänen J, Vuento R, Laine J, Huttunen R. Meticillin-resistant Staphylococcus aureus (MRSA) bacteraemia in Tampere University Hospital: a case-control study, Finland October 2002 to January 2010. Euro Surveill 2011; 16:19958. [PMID: 21903040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Meticillin-resistant Staphylococcus aureus (MRSA) has emerged as a frequent pathogen in blood cultures in Pirkanmaa Hospital District (HD), Finland. To study risk factors for MRSA bacteraemia and the adequacy of empirical antimicrobial treatment, we retrospectively reviewed the hospital records of 102 patients, 51 with MRSA, and 51 with meticillin-sensitive Staphylococcus aureus (MSSA) bacteraemias respectively, who had been admitted to Tampere University Hospital in Pirkanmaa HD, from October 2002 to January 2010. For each patient with MRSA bacteraemia, one consecutively detected unmatched patient with MSSA bacteraemia was chosen as control. Patients with MRSA bacteraemias were significantly older (median age: 73 years vs 59 years, p=0.001), were more likely to have been transferred directly from another healthcare facility or were already in the hospital at the onset of bacteraemia (39/51 vs 26/51, p=0.007) and had a higher McCabe class than patients with MSSA bacteraemia (p=0.005). Patients with MRSA bacteraemia more seldom received adequate empirical antimicrobial therapy when compared to those with MSSA bacteraemia (13/51 vs 43/51, p<0.001). Of previously known MRSA carriers 10 of 29 received adequate empirical antimicrobial therapy for their condition. The percentage of MRSA bacteraemias among all S. aureus bacteraemias in Pirkanmaa HD is high compared to corresponding figures for the whole of Finland.
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Affiliation(s)
- P Rahikka
- University of Tampere Medical School, FI-33014 University of Tampere, and Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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Huttunen R, Syrjänen J, Vuento R, Hurme M, Huhtala H, Laine J, Pessi T, Aittoniemi J. Plasma level of soluble urokinase-type plasminogen activator receptor as a predictor of disease severity and case fatality in patients with bacteraemia: a prospective cohort study. J Intern Med 2011; 270:32-40. [PMID: 21332843 DOI: 10.1111/j.1365-2796.2011.02363.x] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [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: 12/16/2022]
Abstract
OBJECTIVES Urokinase-type plasminogen activator receptor (uPAR) is expressed on a variety of different immune cells and vascular endothelial cells during inflammation. Previous studies indicate that a high plasma concentration of the soluble form of the receptor (suPAR) predicts poor outcome in infectious diseases. DESIGN A prospective cohort study. SUBJECTS AND METHODS Plasma suPAR levels were measured in 132 patients with bacteraemia caused by Staphylococcus aureus, Streptococcus pneumoniae, ß-haemolytic streptococcae or Escherichia coli using a commercial enzyme-linked immunosorbent assay (ELISA). Values were measured on days 1-4 after a positive blood culture, on days 13-18 and on recovery. RESULTS The maximum suPAR values on days 1-4 were markedly higher in nonsurvivors compared to survivors (15.8 vs. 7.3 ng mL(-1) , P < 0.001) and the area under the receiver operating characteristic curve (AUC(ROC) ) in the prediction of case fatality was 0.84 (95% confidence interval (CI) 0.76-0.93, P < 0.001). At a cut-off level of 11.0 ng mL(-1) , the sensitivity and specificity of suPAR for fatal disease was 83% and 76%, respectively. A high level of suPAR (≥ 11 ng mL(-1) ) was associated with hypotension (mean arterial pressure < 70 mmHg) (odds ratio (OR) 6.5; 95% CI 2.9-14.6) and high sequential organ failure assessment score (≥ 4) (OR 9.3; 95% CI 4.0-21.9). A high suPAR level remained an independent risk factor for case fatality in a logistic regression model adjusted for potential confounders. CONCLUSION Plasma suPAR level is a sensitive and specific independent prognostic biomarker in patients with bacteraemia.
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Affiliation(s)
- R Huttunen
- Department of Internal Medicine, Tampere University Hospital, University of Tampere Medical School, University of Tampere, Tampere, Finland.
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Uotila T, Antonen J, Laine J, Kujansuu E, Haapala AM, Lumio J, Vuento R, Oksa H, Herrala J, Kuusi M, Mustonen J, Korpela M, for the Pirkanmaa Waterborne Outbre. Reactive arthritis in a population exposed to an extensive waterborne gastroenteritis outbreak after sewage contamination in Pirkanmaa, Finland. Scand J Rheumatol 2011; 40:358-62. [DOI: 10.3109/03009742.2011.562533] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Rieger JM, Tang JAL, Harris J, Seikaly H, Wolfaardt J, Glaum R, Schmelzeisen R, Buchbinder D, Jacobson A, Lazarus C, Markowitz E, Okay D, Urken M, Aitasalo K, Happonen RP, Kinnunen I, Laine J, Soukka T. Survey of current functional outcomes assessment practices in patients with head and neck cancer: initial project of the head and neck research network. J Otolaryngol Head Neck Surg 2010; 39:523-531. [PMID: 20828515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
BACKGROUND Functional outcomes assessment has become increasingly important in informing treatment decisions in the area of head and neck cancer. However, consistency of assessment methods across studies has been lacking. For the literature to inform clinical decision making, consensus regarding outcomes measurements is necessary. OBJECTIVE The Head and Neck Research Network (HNRN) was founded in January 2008 to become a conduit for high-quality research in the area of functional outcomes in patients with head and neck defects. The present study surveyed experts in functional outcomes assessment to determine what are considered the most important tools for assessing speech and swallowing and what background patient characteristics are important to capture. DESIGN, PARTICIPANTS, AND MEASURES Respondents to the online survey included 54 participants with a background in speech-language pathology, with the majority of respondents from the United States, Canada, and the United Kingdom. RESULTS AND CONCLUSIONS The results from the survey indicated that clinicians consider both subjective and objective measures as important to use when assessing function. More advanced technical tools were often rated as less important; however, it also was noted that clinicians were most often not able to access these tools or were unfamiliar with them.
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Affiliation(s)
- Jana M Rieger
- Department of Speech Pathology and Audiology, Faculty of Rehabilitation Medicine, University of Alberta, and Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB.
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Kinnunen IAJ, Schrey A, Laine J, Aitasalo K. The use of pedicled temporal musculoperiosteal flap with or without free calvarial bone graft in maxillary reconstructions. Eur Arch Otorhinolaryngol 2010; 267:1299-304. [DOI: 10.1007/s00405-010-1225-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2009] [Accepted: 02/23/2010] [Indexed: 10/19/2022]
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Buhmeida A, Bendardaf R, Hilska M, Laine J, Collan Y, Laato M, Syrjänen K, Pyrhönen S. PLA2 (group IIA phospholipase A2) as a prognostic determinant in stage II colorectal carcinoma. Ann Oncol 2009; 20:1230-5. [PMID: 19276398 DOI: 10.1093/annonc/mdn783] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Approximately 30% of all colorectal cancer (CRC) patients are diagnosed with stage II disease. Adjuvant therapy is not widely recommended. However, it is well established that a subgroup of patients with stage II are at high risk for recurrence within their lifetime and should be considered for adjuvant chemotherapy. The present work was designed to assess the value of group IIA phospholipase A2 (PLA2) as a predictor of disease outcome in stage II CRC patients with long-term follow-up. PATIENTS AND METHODS The present study comprises a series of 116 patients who underwent bowel resection for stage II CRC during 1981-1990 at Turku University Hospital. Archival paraffin-embedded CRC tissue samples were used to prepare tissue microarray blocks for immunohistochemical staining with PLA2. RESULTS Fifty-five percent of all tumors were positive for PLA2. There was no significant correlation between PLA2 expression and age, sex, depth of invasion and lymph node status. In Kaplan-Meier survival analysis, there was a significant (P = 0.010) difference in disease-free survival (DFS) between patients with negative tumors (longer DFS) and those with positive tumors. The same was true with disease-specific survival (DSS), patients with PLA2-negative tumors living significantly longer (P = 0.025). In multivariate (Cox) survival analysis, however, PLA2 was not an independent predictor of DFS or DSS. In subgroup analysis, the right-sided tumors with negative PLA2 staining had remarkably better prognosis (P = 0.010) than PLA2-positive left-sided tumors. CONCLUSIONS Quantification of PLA2 expression seems to provide valuable prognostic information in stage II CRC, particularly in selecting the patients at high risk for recurrent disease who might benefit from adjuvant therapy.
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Affiliation(s)
- A Buhmeida
- Department of Oncology and Radiotherapy,Turku University Hospital, University of Turku, Turku, Finland.
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Ahola S, Turon X, Osterberg M, Laine J, Rojas OJ. Enzymatic hydrolysis of native cellulose nanofibrils and other cellulose model films: effect of surface structure. Langmuir 2008; 24:11592-9. [PMID: 18778090 DOI: 10.1021/la801550j] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Model films of native cellulose nanofibrils, which contain both crystalline cellulose I and amorphous domains, were used to investigate the dynamics and activities of cellulase enzymes. The enzyme binding and degradation of nanofibril films were compared with those for other films of cellulose, namely, Langmuir-Schaefer and spin-coated regenerated cellulose, as well as cellulose nanocrystal cast films. Quartz crystal microbalance with dissipation (QCM-D) was used to monitor the changes in frequency and energy dissipation during incubation at varying enzyme concentrations and experimental temperatures. Structural and morphological changes of the cellulose films upon incubation with enzymes were evaluated by using atomic force microscopy. The QCM-D results revealed that the rate of enzymatic degradation of the nanofibril films was much faster compared to the other types of cellulosic films. Higher enzyme loads did not dramatically increase the already fast degradation rate. Real-time measurements of the coupled contributions of enzyme binding and hydrolytic reactions were fitted to an empirical model that closely described the cellulase activities. The hydrolytic potential of the cellulase mixture was found to be considerably affected by the nature of the substrates, especially their crystallinity and morphology. The implications of these observations are discussed in this report.
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Affiliation(s)
- S Ahola
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK, Espoo, Finland
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Huttunen R, Aittoniemi J, Laine J, Vuento R, Karjalainen J, Rovio AT, Eklund C, Hurme M, Huhtala H, Syrjänen J. Gene-environment Interaction between MBL2 Genotype and Smoking, and the Risk of Gram-positive Bacteraemia. Scand J Immunol 2008; 68:438-44. [DOI: 10.1111/j.1365-3083.2008.02149.x] [Citation(s) in RCA: 8] [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] [Indexed: 11/30/2022]
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Ahola S, Salmi J, Johansson LS, Laine J, Österberg M. Model Films from Native Cellulose Nanofibrils. Preparation, Swelling, and Surface Interactions. Biomacromolecules 2008; 9:1273-82. [PMID: 18307305 DOI: 10.1021/bm701317k] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Ahola
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - J. Salmi
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - L.-S. Johansson
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - J. Laine
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - M. Österberg
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
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Abstract
Heme oxygenase isoenzyme HO-1 has been linked to several cytoprotective functions with a potentially beneficial role in transplantation. In the present study, the effect of genetic variation in HO-1 on renal allograft outcome was investigated. Six hundred and eighty patients subject to renal transplantation in a single transplant unit and their cadaveric kidney donors were included in this study. Four single-nucleotide polymorphisms and one microsatellite marker in the HO-1 gene region were analysed. Some statistically nominally significant associations were observed in preliminary analyses between polymorphisms studied and clinical outcomes, but after correction for multiple comparisons none remained significant. Our data suggest that the HO-1 gene polymorphisms studied have no significant role on outcome of kidney transplantation in the Finnish population.
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Affiliation(s)
- H Turpeinen
- Research and Development, Finnish Red Cross Blood Service, Kivihaantie 7, 00310 Helsinki, Finland.
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Quintero D, Padilla D, Labady M, Laine J. A Transient Behaviour in the Initial Production of Aromatic Compounds from Methane Catalyzed by Mo/HZSM-5. Catal Letters 2007. [DOI: 10.1007/s10562-007-9177-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pääkkö M, Ankerfors M, Kosonen H, Nykänen A, Ahola S, Osterberg M, Ruokolainen J, Laine J, Larsson PT, Ikkala O, Lindström T. Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels. Biomacromolecules 2007; 8:1934-41. [PMID: 17474776 DOI: 10.1021/bm061215p] [Citation(s) in RCA: 759] [Impact Index Per Article: 44.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Toward exploiting the attractive mechanical properties of cellulose I nanoelements, a novel route is demonstrated, which combines enzymatic hydrolysis and mechanical shearing. Previously, an aggressive acid hydrolysis and sonication of cellulose I containing fibers was shown to lead to a network of weakly hydrogen-bonded rodlike cellulose elements typically with a low aspect ratio. On the other hand, high mechanical shearing resulted in longer and entangled nanoscale cellulose elements leading to stronger networks and gels. Nevertheless, a widespread use of the latter concept has been hindered because of lack of feasible methods of preparation, suggesting a combination of mild hydrolysis and shearing to disintegrate cellulose I containing fibers into high aspect ratio cellulose I nanoscale elements. In this work, mild enzymatic hydrolysis has been introduced and combined with mechanical shearing and a high-pressure homogenization, leading to a controlled fibrillation down to nanoscale and a network of long and highly entangled cellulose I elements. The resulting strong aqueous gels exhibit more than 5 orders of magnitude tunable storage modulus G' upon changing the concentration. Cryotransmission electron microscopy, atomic force microscopy, and cross-polarization/magic-angle spinning (CP/MAS) 13C NMR suggest that the cellulose I structural elements obtained are dominated by two fractions, one with lateral dimension of 5-6 nm and one with lateral dimensions of about 10-20 nm. The thicker diameter regions may act as the junction zones for the networks. The resulting material will herein be referred to as MFC (microfibrillated cellulose). Dynamical rheology showed that the aqueous suspensions behaved as gels in the whole investigated concentration range 0.125-5.9% w/w, G' ranging from 1.5 Pa to 105 Pa. The maximum G' was high, about 2 orders of magnitude larger than typically observed for the corresponding nonentangled low aspect ratio cellulose I gels, and G' scales with concentration with the power of approximately three. The described preparation method of MFC allows control over the final properties that opens novel applications in materials science, for example, as reinforcement in composites and as templates for surface modification.
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Affiliation(s)
- M Pääkkö
- Laboratory of Optics and Molecular Materials, Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, PO Box 2200, FIN-02015 HUT, Espoo, Finland
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Tiitu M, Laine J, Serimaa R, Ikkala O. Ionically self-assembled carboxymethyl cellulose/surfactant complexes for antistatic paper coatings. J Colloid Interface Sci 2006; 301:92-7. [PMID: 16765975 DOI: 10.1016/j.jcis.2006.04.072] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2006] [Revised: 04/22/2006] [Accepted: 04/24/2006] [Indexed: 11/22/2022]
Abstract
We show that ionically self-assembled polyelectrolyte/surfactant complexes allow a facile route to tailor the electrical surface resistance of paper sheets for antistatic dissipative regime. We use anionic polyelectrolyte carboxymethyl cellulose (CMC) where cationic alkyltrimethylammonium chloride surfactants (C(n)TAC) with the alkyl chain lengths n=12, 14 or 16 methyl units are ionically complexed by precipitation from aqueous solutions. Such alkyl chains are sufficiently long to allow self-assembly in solid films after solvent evaporation. Short chain lengths, e.g., n=8, did not lead to precipitation. Small angle X-ray scattering indicates cylindrical self-assembly in bulk samples. Upon exposing bulk samples under humidity of 50% RH for 18 h, conductivity of ca. 10(-5) S/cm at room temperature is achieved based on AC-impedance analysis. Flexographic printing and spray coating were selected to conceptually test the feasibility as paper coatings and surface sheet resistances of ca. 10(9) Omega are reached. The results indicate that self-assembled polyelectrolyte/surfactant complexes can allow sufficient conductivity levels for antistatic paper coatings potentially due to protonic conductivity and suggest to develop processes and materials for realistic applications.
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Affiliation(s)
- M Tiitu
- Department of Engineering Physics and Mathematics, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
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Lindholm P, Valavaara R, Aitasalo K, Kulmala J, Laine J, Elomaa L, Sillanmäki L, Minn H, Grénman R. Preoperative hyperfractionated accelerated radiotherapy and radical surgery in advanced head and neck cancer: A prospective phase II study. Radiother Oncol 2006; 78:146-51. [PMID: 16307813 DOI: 10.1016/j.radonc.2005.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2005] [Revised: 10/13/2005] [Accepted: 11/07/2005] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND PURPOSE To evaluate whether preoperative hyperfractionated accelerated radiotherapy (RT) combined with major radical surgery is feasible and successful in the treatment of advanced primary head and neck cancer. PATIENTS AND METHODS Ninety four patients with histologically confirmed head and neck squamous cell cancer (HNSCC) in the oral cavity (41/96; 43%), supraglottis (14/96; 15%), glottis (5/96; 5%), oropharynx (16/96; 17%), nasal cavity/paranasal sinuses (8/96; 8%), nasopharynx (3/96; 3%), hypopharynx (7/96; 7%) and two (2%) with unknown primary tumour and large cervical lymph nodes entered into the study. 21/96 patients (22%) had stage II, 17/96 (18%) stage III and 58/96 patients (60%) stage IV disease. The patients received preoperative hyperfractionated RT 1.6 Gy twice a day, 5 days a week to a median tumour dose of 63 Gy with a planned break for 11 days (median) after the median dose of 37 Gy. Then, after a median of 27 days the patients underwent major radical surgery of the primary tumour and metastatic lymph nodes including reconstructions with pedicled or microvascular free flaps when indicated as a part of the scheduled therapy. 12/96 patients had only ipsilateral or bilateral neck dissections. RESULTS After a median follow-up time of 37.2 mos 77/96 (80.2%) patients had complete locoregional control. All but 2 patients had complete histological remission after surgery. 40/96 pts were alive without disease, two of them after salvage surgery. 32/96 patients had relapsed; 15 had locoregional and 13 distant relapses, 4 patients relapsed both locoregionally and distantly. Fifty patients have died; 29 with locoregional and/or distant relapse, eight patients died of second malignancy, and 19 had intercurrent diseases. Disease-specific and overall survival at 3 years was 67.7 and 51%, respectively. Acute grade three mucosal reactions were common, but transient and tolerable. Late grade 3-4 adverse effects were few. CONCLUSIONS Preoperative hyperfractionated accelerated RT can be successfully combined with major radical surgery in the treatment of HNSCC. The amount of serious late adverse effects was not increased.
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Affiliation(s)
- Paula Lindholm
- Department of Oncology and Radiotherapy, University of Turku, Turku, Finland.
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Jaatinen K, Tuittila ES, Laine J, Yrjälä K, Fritze H. Methane-oxidizing bacteria in a Finnish raised mire complex: effects of site fertility and drainage. Microb Ecol 2005; 50:429-39. [PMID: 16283115 DOI: 10.1007/s00248-005-9219-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2004] [Accepted: 03/09/2005] [Indexed: 05/05/2023]
Abstract
Methane-oxidizing bacteria (MOB) are the only biological sinks for methane (CH4). Drainage of peatlands is known to decrease overall CH4 emission, but the effect on MOB is unknown. The objective of this work was to characterize the MOB community and activity in two ecohydrologically different pristine peatland ecosystems, a fen and a bog, and their counterparts that were drained in 1961. Oligotrophic fens are groundwater-fed peatlands, but ombrotrophic bogs receive additional water and nutrients only from rainwater. The sites were sampled in August 2003 down to 10 cm below the water table (WT), and cores were divided into 10-cm subsamples. CH4 oxidation was measured by gas chromatography (GC) to characterize MOB activity. The MOB community structure was characterized by polymerase chain reaction-denaturing gradient gel electrophoresis (DGGE) and sequencing methods using partial pmoA and mmoX genes. The highest CH4 oxidation rates were measured from the subsamples 20-30 and 30-40 cm above WT at the pristine oligotrophic fen (12.7 and 10.5 micromol CH4 dm-3 h-1, respectively), but the rates decreased to almost zero in the vicinity of WT. In the pristine ombrotrophic bog, the highest oxidation rate at 0-10 cm was lower than in the fen (8.10 micromol CH4 dm-3 h-1), but in contrast to the fen, oxidation rates of 4.5 micromol CH4 dm-3 h-1 were observed at WT and 10 cm below WT. Drainage reduced the CH4 oxidation rates to maximum values of 1.67 and 5.77 micromol CH4 dm-3 h-1 at 30-40 and 20-30 cm of the fen and bog site, respectively. From the total of 13 pmoA-derived DGGE bands found in the study, 11, 3, 6, and 2 were observed in the pristine fen and bog and their drained counterparts, respectively. According to the nonmetric multidimensional scaling of the DGGE banding pattern, the MOB community of the pristine fen differed from the other sites. The majority of partial pmoA sequences belonged to type I MOB, whereas the partial mmoX bands that were observed only in the bog sites formed a distinct group relating more to type II MOB. This study indicates that fen and bog ecosystems differ in MOB activity and community structure, and both these factors are affected by drainage.
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Affiliation(s)
- K Jaatinen
- Finnish Forest Research Institute, Vantaa Research Centre, Finland.
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Fras L, Johansson LS, Stenius P, Laine J, Stana-Kleinschek K, Ribitsch V. Analysis of the oxidation of cellulose fibres by titration and XPS. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.01.035] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lindfors J, Ylisuvanto S, Kallio T, Laine J, Stenius P. Spreading and adhesion of ASA on hydrophilic and hydrophobic SiO2. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.01.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Matos J, Labady M, Albornoz A, Laine J, Brito J. Catalytic effect of KOH on textural changes of carbon macro-networks by physical activation. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.molcata.2004.09.039] [Citation(s) in RCA: 21] [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] [Indexed: 10/26/2022]
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Bendardaf R, Lamlum H, Vihinen P, Ristamäki R, Laine J, Pyrhönen S. Low Collagenase-1 (MMP-1) and MT1-MMP Expression Levels Are Favourable Survival Markers in Advanced Colorectal Carcinoma. Oncology 2004; 65:337-46. [PMID: 14707454 DOI: 10.1159/000074647] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Extracellular matrix degradation is required for invasive growth and metastasis formation in colorectal carcinoma; therefore, we examined matrix metalloproteinases expression (MMP-1, MMP-13 and MT1-MMP) and apoptosis in tumours from 49 patients with advanced colorectal disease. METHODS MMP expression was determined immunohistochemically and apoptotic index (AI) was ascertained using the TUNEL assay. RESULTS Low levels of MT1-MMP, MMP-1 and AI were found to be favourable markers significantly associated with longer survival. MT1-MMP expression levels below the median (</=14.0% of tumour cells) were associated with better overall survival (median 26.2 vs. 15.6 months, p = 0.02) and MMP-1 expression levels below the median (</=28.7% of tumour cells) correlated with longer survival following metastasis (median 21.5 vs. 13.3 months, p = 0.05). MT1-MMP, MMP-1 and AI were all found to have significant independent effects on survival. Interestingly, MMP-1 expression levels above the median were associated with distal disease of the colon (p = 0.02). CONCLUSIONS These findings reveal that MT1-MMP and MMP-1 expression levels and AI are useful prognostic indicators in advanced colorectal carcinoma and suggest that markers of MMP expression might be used in identifying patients who would benefit from new treatment modalities involving MMP inhibitors.
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Affiliation(s)
- R Bendardaf
- Department of Oncology and Radiotherapy, Turku University Central Hospital, Turku, Finland.
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Bendardaf R, Ristamäki R, Kujari H, Laine J, Lamlum H, Collan Y, Pyrhönen S. Apoptotic index and bcl-2 expression as prognostic factors in colorectal carcinoma. Oncology 2003; 64:435-42. [PMID: 12759543 DOI: 10.1159/000070304] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To examine programmed cell death in 57 colorectal carcinomas (49 primary tumours and 8 metastases) and determine the prognostic significance of apoptosis in colorectal cancer. METHODS Apoptotic index (AI) was ascertained by counting apoptotic bodies, using terminal deoxynucleotidyl transferase mediated digoxigenin nick end labelling (Tunel assay) and the expression of bcl-2 was examined immunohistochemically. Statistical analysis was used to test the value of clinical variables, histopathological data, AI and bcl-2 expression in predicting the clinical outcome of these patients and the survival function was calculated using the Kaplan-Meier method. RESULTS AI was found to have a significant independent effect on survival (p = 0.0006), with lower values of AI conveying better survival. CONCLUSION In summary, these findings reveal that AI is a useful prognostic factor in colorectal carcinoma.
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Affiliation(s)
- R Bendardaf
- Department of Oncology and Radiotherapy, Turku University Central Hospital, Turku, Finland.
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Lund V, Laine J, Laitio T, Kentala E, Jalonen J, Scheinin H. Instantaneous beat-to-beat variability reflects vagal tone during hyperbaric hyperoxia. Undersea Hyperb Med 2003; 30:29-36. [PMID: 12841606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hyperbaric hyperoxia affects heart rate variability (HRV) by increasing parasympathetic activity. The purpose of this study was to evaluate the applicability of instantaneous beat-to-beat variability (SD1 of Poincaré plot analysis) in detecting changes in vagal tone and to evaluate possible changes in the fractality of heart rate dynamics (alpha1 of detrended fluctuation analysis) during hyperbaric hyperoxia. Continuous three-lead ECG recordings were taken in ten divers who were treated at 2.5 ATA with air (PO2 47 kPa) and oxygen (PO2 235 kPa) for 60 min. Power spectral analysis, Poincaré plot analysis and alpha1 were analyzed before compression, after 30 min and after 55 min at 2.5 ATA. Correlations between the variables were calculated after 55 min exposure. SD1 and high frequency (HF) power increased significantly but alpha1 decreased during hyperbaric hyperoxia (PO2 235 kPa). HF power and SD1 also correlated significantly. However, HF power and SD1 correlated inversely with alpha1. During hyperbaric hyperoxia, SD1 reflects vagal activity and can be used instead of HF power, if stationary conditions cannot be achieved. The decreasing alpha1 indicates more random heart rate dynamics during hyperbaric hyperoxia.
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Affiliation(s)
- V Lund
- Department on Anesthesiology and Intensive Care, Turku University Hospital, Turku, Finland
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Laine J. [Life and health as basic rights]. Duodecim 2002; 117:2437-40. [PMID: 12184102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Laine J, Vähätalo K, Peltola J, Tammisalo T, Happonen RP. Rehabilitation of patients with congenital unrepaired cleft palate defects using free iliac crest bone grafts and dental implants. Int J Oral Maxillofac Implants 2002; 17:573-80. [PMID: 12182301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
PURPOSE To rehabilitate the mastication and speech of edentulous congenital cleft lip and palate patients with the use of endosseous implants in conjunction with bone augmentation. MATERIALS AND METHODS Between 1992 and 1999, 6 partially and 4 completely edentulous adult patients with complex cleft palate defects were treated. Six patients had large, unrepaired defects of the hard and soft palate, whereas the other 4 had residual oronasal fistulas after failed palatoplasty and bone grafting. In 8 patients, free inlay-antral and simultaneous lateral-onlay bone grafts (3 patients) were obtained from the iliac crest, and dental implants were placed secondarily. In the other 2 patients, the implants were placed without grafting in recent extraction sites. Rigid bars with extensions over the defects were used to support obturator prostheses (n = 7), or patients were provided with fixed implant-supported prostheses (n = 3). In all, 50 cylindric, screw-type dental implants were placed and followed up for 1 to 8 years (mean, 5 years). RESULTS Six implants were regarded as early failures and 1 was lost during the first year of loading; 1 patient lost all 5 implants. The cumulative success rate at 5 years was 85.7%. DISCUSSION AND CONCLUSION All 9 successfully rehabilitated patients reported a remarkable functional and psychologic improvement after the treatment. The described treatment protocol also seemed to be effective for correcting velopharyngeal insufficiency in patients using an obturator prosthesis.
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Affiliation(s)
- Juhani Laine
- Department of Oral Diseases, Turku University Central Hospital, Finland.
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Abstract
OBJECTIVE this study was aimed at characterizing the craniofacial structures, i.e. the facial skeleton, cranial base, dentition, pharyngeal airway space, and the hyoid bone position, in healthy preschool children without sleep-related breathing disorder. MATERIALS AND METHODS from lateral cephalometric radiographs taken of 92 children for diagnostic purposes, 45 were selected for the present investigation on the basis of head position, and divided according to the classification of Siriwat and Jarabak (Angle Orthod. 55 (1985) 127) into groups representing counter-clockwise (CC), straight downward (SD), and clockwise (C) facial types. RESULTS the findings showed that, in comparison with the other groups, CC is associated with larger facial taper and posterior facial height, smaller mandibular line angle, ramus position, lower facial height and cranial base angle. By a similar comparison, C is associated with larger mandibular line, gonial angles and convexity, and with a smaller L-1 to mandibular line angle. There were no significant differences in hyoid bone position among the three groups. However, the distance of the lower pharynx was smaller in CC than in C, while the tongue base of CC was noted to be in a posterior position. CONCLUSIONS thus, the results indicate that there are significant differences in the madibular position and form among the present three groups of children. It is proposed that the objective of vertical facial control ought to be included in the treatment of preschool children with malocclusion and respiratory disorder.
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Affiliation(s)
- Shigeto Kawashima
- Department of Oral and Maxillofacial Surgery, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, FIN-20520, Finland.
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Matikainen T, Perez GI, Jurisicova A, Pru JK, Schlezinger JJ, Ryu HY, Laine J, Sakai T, Korsmeyer SJ, Casper RF, Sherr DH, Tilly JL. Aromatic hydrocarbon receptor-driven Bax gene expression is required for premature ovarian failure caused by biohazardous environmental chemicals. Nat Genet 2001; 28:355-60. [PMID: 11455387 DOI: 10.1038/ng575] [Citation(s) in RCA: 353] [Impact Index Per Article: 15.3] [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] [Indexed: 11/08/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are toxic chemicals released into the environment by fossil fuel combustion. Moreover, a primary route of human exposure to PAHs is tobacco smoke. Oocyte destruction and ovarian failure occur in PAH-treated mice, and cigarette smoking causes early menopause in women. In many cells, PAHs activate the aromatic hydrocarbon receptor (Ahr), a member of the Per-Arnt-Sim family of transcription factors. The Ahr is also activated by dioxin, one of the most intensively studied environmental contaminants. Here we show that an exposure of mice to PAHs induces the expression of Bax in oocytes, followed by apoptosis. Ovarian damage caused by PAHs is prevented by Ahr or Bax inactivation. Oocytes microinjected with a Bax promoter-reporter construct show Ahr-dependent transcriptional activation after PAH, but not dioxin, treatment, consistent with findings that dioxin is not cytotoxic to oocytes. This difference in the action of PAHs versus dioxin is conveyed by a single base pair flanking each Ahr response element in the Bax promoter. Oocytes in human ovarian biopsies grafted into immunodeficient mice also accumulate Bax and undergo apoptosis after PAH exposure in vivo. Thus, Ahr-driven Bax transcription is a novel and evolutionarily conserved cell-death signaling pathway responsible for environmental toxicant-induced ovarian failure.
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MESH Headings
- 9,10-Dimethyl-1,2-benzanthracene/analogs & derivatives
- Adult
- Animals
- Apoptosis
- Environmental Pollution/adverse effects
- Female
- Gene Expression/drug effects
- Genes, Reporter
- Humans
- In Vitro Techniques
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, SCID
- Microinjections
- Oocytes/cytology
- Oocytes/drug effects
- Oocytes/metabolism
- Ovary/drug effects
- Ovary/metabolism
- Ovary/transplantation
- Primary Ovarian Insufficiency/chemically induced
- Primary Ovarian Insufficiency/genetics
- Promoter Regions, Genetic
- Proto-Oncogene Proteins/biosynthesis
- Proto-Oncogene Proteins/deficiency
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins c-bcl-2
- Receptors, Aryl Hydrocarbon/deficiency
- Receptors, Aryl Hydrocarbon/genetics
- Receptors, Aryl Hydrocarbon/metabolism
- Response Elements
- Signal Transduction/drug effects
- Transplantation, Heterologous
- bcl-2-Associated X Protein
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Affiliation(s)
- T Matikainen
- Vincent Center for Reproductive Biology, Department of Obstetrics and Gynecology, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts 02114, USA
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Matos J, Laine J, Herrmann JM. Effect of the Type of Activated Carbons on the Photocatalytic Degradation of Aqueous Organic Pollutants by UV-Irradiated Titania. J Catal 2001. [DOI: 10.1006/jcat.2001.3191] [Citation(s) in RCA: 282] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
To investigate the pulmonary effects of steroid treatment in neonates with meconium aspiration, 25 10- to 12-d-old piglets were studied for 6 h after an intratracheal bolus of human meconium. Dexamethasone (0.5 mg/kg) was given in two treatment schedules, either 1 h before (n = 6) or 1 h after meconium instillation (n = 8). Eight piglets served as controls. Three additional piglets were given dexamethasone without meconium instillation. Pulmonary hemodynamics and oxygenation were followed, and lung tissue samples investigated for signs of inflammation and ultrastructural injury, including apoptosis. Pulmonary artery pressure and vascular resistance increased after meconium instillation, but this rise was significantly prevented after prophylactic dexamethasone. This treatment also improved the acutely deteriorated oxygenation of the piglets after meconium insufflation. Prophylactic, but not early, dexamethasone treatment further protected the lungs from the ultrastructural changes caused by meconium instillation. Additionally, the increase of apoptotic epithelial cell deaths was significantly prevented by both dexamethasone treatments. These results show that prophylactic dexamethasone treatment significantly attenuates the early pulmonary hemodynamic deterioration and structural lung damage caused by meconium aspiration. Further studies on the apoptosis-inhibiting effect of dexamethasone administration in neonatal lungs exposed to heavy meconium are warranted.
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Affiliation(s)
- R Holopainen
- Cardiorespiratory Research Unit, University of Turku, 20520 Turku, Finland
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Abstract
BACKGROUND We report a long-term prospective follow-up of renal allograft histology in children <5 years of age at transplantation (Tx). METHODS Fifty-one kidney allograft recipients were prospectively followed for renal allograft histology and function up to 7 years after Tx. Twenty patients were recipients of kidneys from living related donors, and 31 were cadaveric kidney recipients. All patients received triple immunosuppression. Biopsies were analyzed according to the Banff classification and scored semiquantitatively. The "chronic allograft damage index" (CADI) was calculated. RESULTS Five of seven grafts were lost because of nephrosis in patients with congenital nephrotic syndrome of the Finnish type. Most of the biopsies (52-69%) were considered normal (Banff classification), and the proportion with chronic allograft nephropathy did not increase with time. The median CADI score was 2.5 (scale: 0-36) at 1.5 years and 3.5 at 7 years. Recipients with an acute rejection episode had higher CADI scores than recipients without acute rejection episode. Patients with a high CADI score at 3 years had inferior graft function at 5 years. Recipients <2 years of age had CADI scores and numbers of acute rejection episode similar to recipients between 2 and 5 years of age. However, in contrast to the older recipients, the younger recipients did not improve their absolute glomerular filtration rate with time. CONCLUSIONS The long-term histopathological findings were mostly mild and stable with time. Acute rejection episode had an impact on these changes and CADI predicted later graft function. Nonimmunological risk factors seem to be more important in the youngest recipients.
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Affiliation(s)
- E Qvist
- Hospital for Children and Adolescents, Pediatric Nephrology and Transplantation, University of Helsinki, Finland.
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Abstract
Human T cell prolymphocytic leukemia can result from chromosomal translocations involving 14q32.1 or Xq28 regions. The regions encode a family of protooncogenes (TCL1, MTCP1, and TCL1b) of unknown function. In yeast two-hybrid screening, we found that TCL1 interacts with Akt. All TCL1 isoforms bind to the Akt pleckstrin homology domain. Both in vitro and in vivo TCL1 increases Akt kinase activity and as a consequence enhances substrate phosphorylation. In vivo, TCL1 stabilizes the mitochondrial transmembrane potential and enhances cell proliferation and survival. In vivo, TCL1 forms trimers, which associate with Akt. TCL1 facilitates the oligomerization and activation of Akt. Our data show that TCL1 is a novel Akt kinase coactivator, which promotes Akt-induced cell survival and proliferation.
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Affiliation(s)
- J Laine
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA
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