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Han HS, Lee JT, Oh S, Cho YD, Kim S. Effectiveness of a collagen matrix seal and xenograft in alveolar ridge preservation: an experimental study in dogs. Sci Rep 2024; 14:163. [PMID: 38168516 PMCID: PMC10762190 DOI: 10.1038/s41598-023-50370-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024] Open
Abstract
Majority of previous studies on alveolar ridge preservation (ARP) used collagen membranes as barrier membranes, and further evidence for ARP in dehiscent extraction sockets with a deproteinized bovine bone mineral (DBBM) and matrix is needed. The aim of this study is to assess the impact of non-cross linked collagen membranes (membrane) and crosslinked collagen matrices (matrix) on ARP using DBBM in extraction sockets with buccal dehiscence. In six mongrel dogs, the mesial roots of three mandibular premolars (P2, P3, and P4) were extracted 1 month after dehiscence defect induction. Two experimental groups were randomly assigned: (1) DBBM with a membrane (DBBM/membrane group) and (2) DBBM with a matrix (DBBM/matrix group). Three-dimensional (3D) volumetric, microcomputed tomography (μCT), and histologic analyses were performed to assess the ridge preservation. Both groups were effective to maintain the ridge width (p > 0.05), and the DBBM/matrix group showed more favorable soft tissue regeneration and bone quality in the histological analysis (p = 0.05). Based on these results, DBBM/matrix could be better choice for ARP in cases of buccal dehiscence defects.
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Affiliation(s)
- Hee-Seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jung-Tae Lee
- One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Seunghan Oh
- Department of Dental Biomaterials, The Institute of Biomaterial and Implant, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea.
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea.
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Han HS, Lee JT, Oh S, Cho YD, Kim S. Evaluation of alveolar ridge preservation in sockets with buccal dehiscence defects using two types of xenogeneic biomaterials: An in vivo experimental study. Clin Oral Implants Res 2023; 34:1289-1298. [PMID: 37655673 DOI: 10.1111/clr.14169] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/11/2023] [Accepted: 08/09/2023] [Indexed: 09/02/2023]
Abstract
OBJECTIVES Alveolar ridge preservation (ARP) has been extensively investigated in various preclinical and clinical studies, yielding favorable results. We aim to evaluate the effects of ARP using collagenated bovine bone mineral (CBBM) alone or particulated bovine bone mineral with a non-cross-linked collagen membrane (PBBM/NCLM) in tooth extraction sockets with buccal dehiscence in an experimental dog model. MATERIALS AND METHODS The mesial roots of three mandibular premolars (P2, P3, and P4) were extracted from six mongrel dogs 4 weeks after inducing dehiscence defects. ARP was randomly performed using two different protocols: 1) CBBM alone and 2) PBBM/NCLM. Three-dimensional (3D) volumetric, micro-computed tomography, and histological analyses were employed to determine changes over a span of 20 weeks. RESULTS In 3D volumetric and radiographic analyses, CBBM alone demonstrated similar effectiveness to PBBM/NCLM in ARP (p > .05). However, in the PBBM/NCLM group (3.05 ± 0.60 mm), the horizontal ridge width was well maintained 3 mm below the alveolar crest compared with the CBBM group (2.11 ± 1.01 mm, p = .002). CONCLUSION Although the radiographic changes in the quality and quantity of bone were not significant between the two groups, the use of PBBM/NCLM resulted in greater horizontal dimensions and more favorable maintenance of the ridge profile.
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Affiliation(s)
- Hee-Seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Jung-Tae Lee
- One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul, Republic of Korea
| | - Seunghan Oh
- Department of Dental Biomaterials, The Institute of Biomaterial and Implant, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Republic of Korea
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Kim KS, Ahn S, Han JW, Cho SH, Lee JT, Lee HJ, Kim KW. Oral health and risk of cognitive disorders in older adults: A biannual longitudinal follow-up cohort. J Oral Rehabil 2023. [PMID: 37159220 DOI: 10.1111/joor.13486] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/06/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
BACKGROUND Oral health may be associated with cognitive disorders such as mild cognitive impairment or dementia. OBJECTIVE This study elucidates the effects of oral health conditions on the progression of cognitive disorders. METHODS Data were collected from 153 participants of the Korean Longitudinal Study on Cognitive Aging and Dementia cohort who completed the longitudinal dental examinations and cognitive function assessments using the three-wave biannual survey. We analyzed the relationship between dental factors and the conversion of cognitive function. RESULTS The ratio of maxillary removable partial denture use (p = 0.03) was high in the converter and mild cognitive impairment/dementia groups. The low-grade ratio of posterior masticatory performance increased in the converter and mild cognitive impairment/dementia groups (modified Eichner index 2, p = 0.04). The mild cognitive impairment/dementia group had a higher rate of complete mandibular denture use (p < 0.001). The converter and mild cognitive impairment/dementia groups had fewer remaining teeth (p < 0.05) or removable prostheses (p < 0.01) than the normal group. CONCLUSIONS Masticatory performance is associated with the conversion of cognitive disorders. Our findings suggest that oral health management can help delay the progression of cognitive disorders.
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Affiliation(s)
- Keun-Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Soyeon Ahn
- Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ji Won Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Psychiatry, Seoul National University, College of Medicine, Seoul, Korea
| | - Sang Hyun Cho
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ki Woong Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Psychiatry, Seoul National University, College of Medicine, Seoul, Korea
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Lee Y, Lee JT, Han HS, Oh S, Cho YD, Kim S. Gingival biotype modification with collagen matrix or autogenous subepithelial connective tissue graft: Histologic and volumetric analyses in a beagle model. Heliyon 2023; 9:e15026. [PMID: 37151660 PMCID: PMC10161361 DOI: 10.1016/j.heliyon.2023.e15026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/07/2023] [Accepted: 03/24/2023] [Indexed: 05/09/2023] Open
Abstract
Objectives To evaluate the volumetric effect and biocompatibility of porcine tendon-derived type I collagen matrix graft (CG) in gingival biotype modification (GBM) compared with subepithelial connective tissue graft (SCTG) in a beagle model. Methods Surface analysis using scanning electron microscopy and a collagen degradation assay of CG was performed in vitro. Six adult dogs were used in in vivo experiment, and each received autologous SCTG or CG at the anterior side. Histometric and three-dimensional digital volume analyses were conducted to compare quantitative changes in CG and SCTG in GBM. Immunohistochemical analysis was performed for the qualitative evaluation of CG compared to SCTG. Results CG had a double-layered structure, and its degradation was slower than that of other well-reported materials. No critical problems were associated with the healing procedure. Changes in gingival thickness and volume in the CG and SCTG groups were equivalent, with no significant differences between the groups. Type I collagen and vascular endothelial growth factor expression levels were similar in both groups. Significance CG and SCTG had equivalent potential for GBM in terms of quantity and quality. Additionally, CG could be used as a reasonable substitute for SCTG, making surgery convenient and predicting successful clinical outcomes.
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Affiliation(s)
- Yoonsub Lee
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul 05698, South Korea
| | - Hee-seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
| | - Seunghan Oh
- Department of Dental Biomaterials, The Institute of Biomaterial and Implant, School of Dentistry, Wonkwang University, Iksan, South Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, South Korea
- Corresponding author. Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University ,101 Daehak-ro, Jongno-gu, Seoul 03080, South Korea.
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Hellings PW, Fokkens WJ, Orlandi R, Adriaensen GF, Alobid I, Baroody FM, Bjermer L, Senior BA, Cervin A, Cohen NA, Constantinidis J, De Corso E, Desrosiers M, Diamant Z, Douglas RG, Gane S, Gevaert P, Han JK, Harvey RJ, Hopkins C, Kern RC, Landis BN, Lee JT, Lee SE, Leunig A, Lund VJ, Bernal-Sprekelsen M, Mullol J, Philpott C, Prokopakis E, Reitsma S, Ryan D, Salmi S, Scadding G, Schlosser RJ, Steinsvik A, Tomazic PV, Van Staeyen E, Van Zele T, Vanderveken O, Viskens AS, Conti D, Wagenmann M. The EUFOREA pocket guide for chronic rhinosinusitis. Rhinology 2023; 61:85-89. [PMID: 36507741 DOI: 10.4193/rhin22.344] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chronic rhinosinusitis (CRS) is known to affect around 5 % of the total population, with major impact on the quality of life of those severely affected (1). Despite a substantial burden on individuals, society and health economies, CRS often remains underdiagnosed, under-estimated and under-treated (2). International guidelines like the European Position Paper on Rhinosinusitis and Nasal Polyps (EPOS) (3) and the International Consensus statement on Allergy and Rhinology: Rhinosinusitis 2021 (ICAR) (4) offer physicians insight into the recommended treatment options for CRS, with an overview of effective strategies and guidance of diagnosis and care throughout the disease journey of CRS.
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Affiliation(s)
- P W Hellings
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Allergy and Clinical Immunology Research Group, Leuven, Belgium; University Hospitals Leuven, Department of Otorhinolaryngology, Leuven, Belgium; University Hospital Ghent, Department of Otorhinolaryngology, Laboratory of Upper Airways Research, Ghent, Belgium; Department of otorhinolaryngology and head/neck surgery, Amsterdam University Medical Centres, location AMC, University of Amsterdam, Amsterdam, The Nethe
| | - W J Fokkens
- Department of otorhinolaryngology and head/neck surgery, Amsterdam University Medical Centres, location AMC, University of Amsterdam, Amsterdam, The Netherland
| | - R Orlandi
- Rhinology and Skull Base, Department of Otorhinolaryngology, Hospital Clinic, Universidad de Barcelona, Centro Medico Teknon, Barcelona, Spain
| | - G F Adriaensen
- Department of otorhinolaryngology and head/neck surgery, Amsterdam University Medical Centres, location AMC, University of Amsterdam, Amsterdam, The Netherland
| | - I Alobid
- Rhinology and Skull Base, Department of Otorhinolaryngology, Hospital Clinic, Universidad de Barcelona, Centro Medico Teknon, Barcelona, Spain
| | - F M Baroody
- The University of Chicago Medicine, Chicago, IL, United States
| | - L Bjermer
- Dept of Respiratory Medicine and Allergology, Skane University Hospital, Lund, Sweden
| | - B A Senior
- Division of Rhinology, Allergy, and Endoscopic Skull Base Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - A Cervin
- The university of Queensland Centra for Clinical Research, Herston, Australia; Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - N A Cohen
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - J Constantinidis
- 1st Department of ORL, Head and Neck Surgery, Aristotle University, AHEPA Hospital, Thessaloniki, Greece
| | - E De Corso
- Department of Otolaryngology Head and Neck Surgery, Fondazione Policlinico Universitario A. Gemelli IRCSS, Universita; Cattolica Sacro Cuore, Rome, Italy
| | - M Desrosiers
- Department of Otolaryngology-Head and Neck Surgery, Universita de Montreal, Montreal, Canada
| | - Z Diamant
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Allergy and Clinical Immunology Research Group, Leuven, Belgium; Dept of Respiratory Medicine and Allergology, Skane University Hospital, Lund, Sweden; Department Clinical Pharmacy and Pharmacology, University Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - R G Douglas
- Department of Surgery, The University of Auckland, New Zealand
| | - S Gane
- Royal National Ear, Nose and Throat and Eastman Dental Hospitals, London, United Kingdom
| | - P Gevaert
- University Hospital Ghent, Department of Otorhinolaryngology, Laboratory of Upper Airways Research, Ghent, Belgium
| | - J K Han
- Department of Otolaryngology and Head and Neck Surgery at Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - R J Harvey
- Rhinology and Skull Base, Applied Medical Research Center, Department of Otolaryngology and Head and Neck Surgery at Eastern Virginia Medical School, Norfolk, Virginia, USA; Faculty of medicine and heath sciences, Macquarie University, Sydney, Australia
| | - C Hopkins
- Ear, Nose and Throat Department, Guys and St. Thomas Hospital, London, United Kingdom
| | - R C Kern
- Department of Otolaryngology, Head and Neck Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA; Division of Allergy-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - B N Landis
- Hopitaux Universitaires de Geneve, Geneve, Geneve, Switzerland
| | - J T Lee
- Brigham and Women's Hospital, Harvard Medical School, Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, Section of Rhinology and Skull Base Surgery, Massachusetts, USA
| | - S E Lee
- Department of Head and Neck Surgery, University of California Los Angeles David Geffen School of Medicine, Los Angeles, CA, USA
| | - A Leunig
- Rhinology Center, Munich and ENT-Clinic, Munich, Germany
| | - V J Lund
- Royal National Throat, Nose and Ear Hospital, UCLH, London, UK
| | | | - J Mullol
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, IDIBAPS, Universitat de Barcelona, CIBERES. Barcelona, Catalonia, Spain
| | - C Philpott
- NIHR UCLH Biomedical research Centre, London, UK; Ear Institute, University College London, London, UK
| | - E Prokopakis
- Department of Otorhinolaryngology, University of Crete School of Medicine, Heraklion, Greece
| | - S Reitsma
- Department of otorhinolaryngology and head/neck surgery, Amsterdam University Medical Centres, location AMC, University of Amsterdam, Amsterdam, The Netherland
| | - D Ryan
- Usher institute, University of Edinburgh, Edinburgh, UK
| | - S Salmi
- Medicum, Haartman Institute, University of Helsinki, Helsinki, Finland; Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland
| | - G Scadding
- Royal National Ear, Nose and Throat and Eastman Dental Hospitals, London, United Kingdom
| | - R J Schlosser
- Department of Otolaryngology Head and Neck surgery, Medical University of South Carolina, Charleston, SC, USA
| | | | - P V Tomazic
- Department of Otorhinolaryngology, Medical University of Graz, Graz, Austria
| | - E Van Staeyen
- University Hospitals Leuven, Department of Otorhinolaryngology, Leuven, Belgium
| | - T Van Zele
- University Hospital Ghent, Department of Otorhinolaryngology, Laboratory of Upper Airways Research, Ghent, Belgium
| | - O Vanderveken
- Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Antwerp, Belgium; Department of ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Antwerp, Belgium; Multidisciplinary Sleep Disorder Center, Antwerp University Hospital, Edegem, Antwerp, Belgium
| | - A-S Viskens
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Allergy and Clinical Immunology Research Group, Leuven, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Antwerp, Belgium
| | | | - M Wagenmann
- Department of Otorhinolaryngology, Universitatsklinikum Disseldorf, Dusseldorf, Germany
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Park SH, Paek SH, Kim B, Lee JT. Assessment of Bone Height Changes Based on the Cone-Beam Computed Tomography Following Intentional Replantation for Periodontally Compromised Teeth. Medicina (Kaunas) 2022; 59:medicina59010040. [PMID: 36676664 PMCID: PMC9864039 DOI: 10.3390/medicina59010040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
Background and Objectives; This study aimed to evaluate the clinical outcomes and bone changes before and after intentional replantation (IR) for periodontally compromised teeth by using cone-beam computed tomography (CBCT). Materials and Methods; Fourteen periodontally involved teeth were selected for IR. A preoperative orthodontic procedure was performed to apply luxation, and the tooth was then gently extracted. Retrograde filling of the root-end canal was performed. Once the tooth was repositioned in the socket, it was splinted with the adjacent tooth. After three months, prosthetic restoration was performed. Results; Clinical parameters and CBCT images were obtained before and after the IR procedure. The height of the alveolar bone was measured on the CBCT images by using software. Most preoperative symptoms, including pain, mobility, probing depth (PD) and bleeding on probing (BOP), significantly decreased after IR (pain: 4.71 to 1.00; mobility: 1.36 to 0.29; PD: 5.60 to 2.85; BOP: 3.50 to 0.79). CBCT analysis indicated an increase in bone height after IR (the amount of change: maxilla, 4.00; mandible, 1.95). Conclusions; A previous study reported that IR for periodontally involved teeth is quite limited. However, in this study, IR of periodontally compromised teeth showed favorable results in clinical and radiographic evaluations, suggesting that IR may be an alternative to extraction of teeth with periodontal disease.
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Affiliation(s)
- So-hyun Park
- Department of Advanced General Dentistry, Dankook University Jukjeon Dental Hospital, Yongin-si 16890, Republic of Korea
| | - Seung-Heon Paek
- Department of Advanced General Dentistry, Dankook University Jukjeon Dental Hospital, Yongin-si 16890, Republic of Korea
| | - Bongju Kim
- Dental Life Science Research Institute, Seoul National University Dental Hospital, Seoul 03722, Republic of Korea
- Correspondence: (B.K.); (J.-T.L.)
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul 05698, Republic of Korea
- Correspondence: (B.K.); (J.-T.L.)
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Lee D, Lee Y, Kim S, Lee JT, Ahn JS. Evaluation of regeneration after the application of 2 types of deproteinized bovine bone mineral to alveolar bone defects in adult dogs. J Periodontal Implant Sci 2022; 52:370-382. [PMID: 36302644 PMCID: PMC9614180 DOI: 10.5051/jpis.2106080304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/25/2022] [Accepted: 04/04/2022] [Indexed: 11/09/2022] Open
Abstract
Purpose The aim of this study was to evaluate the preclinical results of 2 types of commercially available deproteinized bovine bone mineral (DBBM) when applied to alveolar bone defects in dogs. Methods This study was conducted using 6 beagles. Alveolar defects in the mandible were formed and filled with 2 DBBMs produced by a similar procedure. Defects were randomly assigned to be filled using DBBM 1 or 2. All defects were covered with a collagen membrane and had a healing period of 12 weeks. After the dogs were sacrificed, histological, histomorphometric, and linear/volumetric analyses were performed. Results Both DBBM groups showed similar histological findings, demonstrating that bone remodeling had occurred and new bone had formed. The residual bone particles were surrounded by newly formed vital bone. In the histomorphometric analysis, the ratio of the area of vital bone and residual bone substitute in DBBM 2 (38.18% and 3.47%, respectively) was higher than that of DBBM 1 (33.74% and 3.41%, respectively), although the difference was not statistically significant. There were also no statistically significant differences between both groups in linear and volumetric analyses using micro-computed tomography scans and digitized images of dental casts. Conclusions In the present study, DBBM 1and 2, which were produced by similar processes, showed similar results in histological, histomorphometric, and volumetric analyses. Further studies are needed to identify more specific differences between the 2 DBBMs.
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Affiliation(s)
- Dajung Lee
- Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Yoonsub Lee
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Sungtae Kim
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul, Korea
| | - Jin-soo Ahn
- Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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Lee JT, Jang IS, Moon JH, Yang SM. In Vitro Evaluation of Implant Surface Decontamination Methods Based on Removal and Regrowth of Microorganisms. Int J Oral Maxillofac Implants 2021; 36:1088-1094. [PMID: 34919605 DOI: 10.11607/jomi.8878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] Open
Abstract
PURPOSE The efficiency of bacterial removal using mechanical and chemical methods and recurrence rates was evaluated based on infected implant surface removal modalities. MATERIALS AND METHODS The study comprises two main parts: in vitro bacterial removal (n = 49) and regrowth (n = 42) suppression tests on implant surfaces. Microorganisms were attached to each implant, and various methods were applied to clean the infected implants. The groups were allocated as follows: (1) no treatment, (2) cotton + saline, (3) brush, (4) scaler, (5) brush + scaler, (6) cotton + 3% H2O2, and (7) brush + 3% H2O2. All groups were further divided into two subgroups of mechanical treatment (3, 4, 5) vs mechanical + chemical treatment (2, 6, 7). After treatment for each group, immunofluorescence analysis and measurement using an ultraviolet-visible light spectrophotometer were performed. RESULTS In the mechanical treatment group, the brush, scaler, and brush + scaler groups, all of which had strong polishing abilities, exhibited superior removal efficiency compared with the other groups (P < .001). In the regrowth experiment, 3% H2O2 effectively restrained biofilm formation. In particular, the brush + 3% H2O2 group exhibited significant differences from the mechanical treatment group (vs brush: P < .001, vs scaler: P = .023, vs brush + scaler: P = .005). CONCLUSION Mechanical methods, including brushes and scalers, effectively removed bacteria. Biofilm formation was effectively restrained by H2O2. In particular, the brush + H2O2 group exhibited a superior ability to suppress bacterial regrowth compared with the other groups.
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Lee IK, Choi HS, Jeong SH, Lee JT. The Effect of Three Surgical Therapies to Increase Keratinized Mucosa Surrounding Dental Implants with Peri-Implantitis: A Pilot Study. Medicina (Kaunas) 2021; 57:medicina57101093. [PMID: 34684130 PMCID: PMC8537084 DOI: 10.3390/medicina57101093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/26/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022]
Abstract
Background and Objectives: The purpose of this pilot study was to evaluate the clinical outcomes of three different methods for increasing the keratinized mucosa (KM) surrounding dental implants with peri-implantitis. Materials and methods: Twenty implant sites with peri-implantitis were divided into: (1) porcine collagen matrix (CM) group: seven implant sites; (2) apically positioned flap (APF) group: eight implant sites; and (3) free gingival graft (FGG) group: five implant sites. The KM width and clinical parameters (probing pocket depth (PPD) and bleeding on probing (BOP)) were measured at time points: before surgery (T0) and 30 (T1), 60 (T2), 90 (T3), and 180 (T4) days after surgery. Results: Regarding KM width, all the groups had significant differences for increasing horizontal and vertical KM width. The CM and FGG groups had greater KM than the APF group. There was a decrease in PPD in all three groups. APF and FGG showed significant differences in PPD at T1 and T2 compared to T0. Only the FGG group showed a significant difference in PPD at T3 and T4 compared with that at T0. BOP values were also reduced in all the groups at T1-T4 compared to T0. The APF and FGG groups showed a significant decrease in BOP. Conclusions: Three surgical therapies presented favorable results for increasing the KM surrounding implants. Compared with the FGG group, the CM showed similar results in increasing the KM around the dental implants with peri-implantitis.
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Affiliation(s)
- In-Kyung Lee
- Department of Periodontics, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea; (I.-K.L.); (H.-S.C.)
| | - Hyun-Seok Choi
- Department of Periodontics, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea; (I.-K.L.); (H.-S.C.)
| | - Sang-Heon Jeong
- Department of Radiology, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea;
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul 05698, Korea
- Correspondence: ; Tel.: +82-2-2072-0054; Fax: +82-2-2072-3018
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Abstract
This paper describes stair ambulation control and functionality of a semi-powered knee prosthesis that supplements nominally passive prosthesis behavior with swing-phase assistance. A set of stair ascent and descent controllers are described. The controllers were implemented in a semi-powered prosthesis prototype, and the prospective benefits of swing assist in stair ambulation were assessed on a group of three participants with unilateral, transfemoral amputation, relative to their respective daily-use prostheses. Results indicate that ambulation with the semi-powered knee resulted in improved stair ascent gait symmetry when compared to the participants' passive daily-use devices, and increased similitude to healthy stair ascent movement.
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Lee IK, Choi HS, Jeong SH, Lee JT. Evaluating Change of Marginal Bone Height with Cone-Beam Computed Tomography Following Surgical Treatment with Guided Tissue Regeneration (Bone Grafting) or Access Flap Alone: A Retrospective Study. Medicina (Kaunas) 2021; 57:medicina57090869. [PMID: 34577792 PMCID: PMC8472387 DOI: 10.3390/medicina57090869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/21/2021] [Accepted: 08/21/2021] [Indexed: 11/25/2022]
Abstract
Background and Objectives: This study aimed to evaluate the change of bone height following treatment of human intrabony defects with guided tissue regeneration (GTR) with bone grafting or access flap alone by cone-beam computed tomography (CBCT) scan. Materials and methods: This study was conducted as a retrospective longitudinal study. In this study, a total of 2281 teeth sites were included: the GTR group had 1210 sites, and the Flap group had 1071 sites. In the GTR group, demineralized freeze-dried bone (DFDBA) particles in combination with resorbable collagen membrane were used. No regenerative material was applied to the Flap group. CBCT images were taken twice at baseline and at least 2.5 months postoperatively. Bone heights were measured using software on CBCT images. Results: The bony change between the GTR and Flap groups was significantly different (p = 0.00001). Both males and females in the GTR group had smaller bone loss than in the Flap group. In age groups, significant differences of bony height between the GTR and Flap groups were observed in the subgroups consisting of those 29–45 and 46–53 years old. The non-smoking subjects in the GTR group had higher bone heights than those in the Flap group. In the absence of systemic disease and medicine, bone formation was higher in the GTR group than in the Flap group. In terms of oral position, the #14–17, #34–37, and #44–47 subgroups of the GTR group showed higher levels of bone heights than those of the Flap group. Conclusions. The results of this study indicated that the GTR procedure offers the additional benefit of higher bone heights than the Flap procedure does.
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Affiliation(s)
- In-Kyung Lee
- Department of Periodontics, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea; (I.-K.L.); (H.-S.C.)
| | - Hyun-Seok Choi
- Department of Periodontics, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea; (I.-K.L.); (H.-S.C.)
| | - Sang-Heon Jeong
- Department of Radiology, Jukjeon Dental Hospital, College of Dentistry, Dankook University, Yongin 16890, Korea;
| | - Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul 05698, Korea
- Correspondence: ; Tel.: +82-2-2072-0054; Fax: +82-2-2072-3018
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Sarsour AH, Lee JT, Haydon K, Persia ME. Tryptophan requirement of first-cycle commercial laying hens in peak egg production. Poult Sci 2021; 100:100896. [PMID: 33518306 PMCID: PMC7936148 DOI: 10.1016/j.psj.2020.11.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/16/2020] [Accepted: 11/29/2020] [Indexed: 10/28/2022] Open
Abstract
An experiment was conducted to evaluate the digestible tryptophan (Trp) requirement of laying hens from 22 to 34 wk of age. A total of 252 Hy-line W-36 laying hens were selected at 16 wk of age and allocated by weight (P = 0.90) to 7 dietary treatments resulting in 12 replicate cages of 3 birds for each treatment. A Trp-deficient basal diet was formulated using corn, corn gluten meal, and soybean meal for each of the 3 dietary phases and supplemented with synthetic L-Trp to provide 105, 119, 133, 147, 162, 176, and 190 mg digestible Trp on a daily basis over the experimental period. To adapt the hens to experimental diets, pullets were fed complete diets that contained increasing amounts of corn gluten meal. Hens received a controlled amount of feed daily based on feed intake expected under commercial conditions. Linear and quadratic broken-line, and quadratic polynomial models were used to estimate digestible Trp requirements based on hen-housed egg production (HHEP), egg mass (EM), and feed efficiency (FE). FE was calculated using EM and feed intake. Digestible Trp requirements were estimated to be 137, 183, and 192 mg/d for HHEP; 133, 180, and 183 for EM and 133, 177, and 173 for FE using linear broken-line, quadratic broken-line, and quadratic polynomial analysis, respectively. The quadratic broken line model in this experiment resulted in the best fit (R2) for all parameters measured. Linear broken line estimates resulted in lower estimates that the other models, and HHEP resulted in higher estimated digestible Trp requirement than EM and FE.
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Affiliation(s)
| | - J T Lee
- CJ America Inc., Downers Grove 60515, IL
| | - K Haydon
- CJ America Inc., Downers Grove 60515, IL
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Maynard CW, Liu SY, Lee JT, Caldas J, Diehl EJJ, Rochell SJ, Kidd MT. Determining the 4th limiting amino acid in low crude protein diets for male and female Cobb MV × 500 broilers. Br Poult Sci 2020; 61:695-702. [PMID: 32551967 DOI: 10.1080/00071668.2020.1782348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
1. Four experiments were conducted to determine the 4th limiting amino acid (AA) in maize-soybean meal-based diets. 2. Deletion assay methodology was used to quantify performance and carcase trait responses to potential deficiencies in essential and conditionally essential AA caused by reductions in dietary crude protein of maize-soybean meal-based diets from 202.9 to 186.5 g/kg. 3. The deletion of Val, Phe and Gly + Pro resulted in negative effects on live performance and carcase traits for male broilers, whereas AA deletion only affected wing weights for females with no response on live performance. 4. Further experimentation could not duplicate a response to Phe or Pro in male broilers. 5. Valine was identified as the potential 4th limiting AA in maize-soybean meal-based diets and was not found to be co-limiting with Ile.
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Affiliation(s)
- C W Maynard
- Centre of Excellence for Poultry Science, University of Arkansas , Fayetteville, AR, USA
| | - S Y Liu
- Poultry Research Foundation, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney , Camden, NSW, Australia
| | - J T Lee
- CJ America - Bio, Downers Grove , IL, USA
| | - J Caldas
- Cobb-Vantress , Siloam Springs, AR, USA
| | | | - S J Rochell
- Centre of Excellence for Poultry Science, University of Arkansas , Fayetteville, AR, USA
| | - M T Kidd
- Centre of Excellence for Poultry Science, University of Arkansas , Fayetteville, AR, USA
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15
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Froebel LK, Jalukar S, Lavergne TA, Lee JT, Duong T. Administration of dietary prebiotics improves growth performance and reduces pathogen colonization in broiler chickens. Poult Sci 2020; 98:6668-6676. [PMID: 31557296 PMCID: PMC8913988 DOI: 10.3382/ps/pez537] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 09/05/2019] [Indexed: 11/22/2022] Open
Abstract
Dietary prebiotics are thought to be potentially important alternatives to antibiotic growth promoters in poultry production because of their beneficial performance and health effects. The administration of dietary prebiotics has been demonstrated to improve animal health, growth performance, and microbial food safety in poultry production. In this study, we evaluated the effects of Saccharomyces- derived prebiotic refined functional carbohydrates (RFC) with yeast culture on growth performance and gastrointestinal and environmental microbiota when administered in-feed and through drinking water to broiler chickens. Broilers were administered 2 doses of prebiotic in-feed through 42 d of production and prebiotic-treated water in the final 72 h. Administration of prebiotic RFC improved ADG and decreased cecal Campylobacter counts, while the high dose also increased final BW. Additionally, significant main effects of prebiotic RFC dose were observed with the high dose improving ADG and ADFI over the finisher phase and final BW. Although the effects were not significant, the prevalence of Campylobacter in the cecum after feed withdrawal was 17% lower when broilers were administered the high prebiotic dose, and recovery of Campylobacter from litter was up to 50% lower when broilers were administered prebiotic RFC. Our results suggest that co-administration of RFC with yeast culture as a prebiotic can be used to improve growth performance and reduce human foodborne pathogens in poultry.
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Affiliation(s)
- L K Froebel
- Department of Poultry Science, Texas A&M University, College Station, TX, 77843, USA
| | - S Jalukar
- Arm and Hammer Animal and Food Production, Princeton, NJ, 08540, USA
| | - T A Lavergne
- Arm and Hammer Animal and Food Production, Princeton, NJ, 08540, USA
| | - J T Lee
- Department of Poultry Science, Texas A&M University, College Station, TX, 77843, USA
| | - T Duong
- Department of Poultry Science, Texas A&M University, College Station, TX, 77843, USA
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16
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Abstract
This paper describes the design of a new type of knee prosthesis called a stance-control, swing-assist (SCSA) knee prosthesis. The device is motivated by the recognition that energetically-passive stance-controlled microprocessor-controlled knees (SCMPKs) offer many desirable characteristics, such as quiet operation, low weight, high-impedance stance support, and an inertially-driven swing-phase motion. Due to the latter, however, SCMPKs are also highly susceptible to swing-phase perturbations, which can increase the likelihood of falling. The SCSA prosthesis supplements the behavior of an SCMPK with a small motor that maintains the low output impedance of the SCMPK swing state, while adding a supplemental closed-loop controller around it. This paper elaborates upon the motivation for the SCSA prosthesis, describes the design of a prosthesis prototype, and provides human-subject testing data that demonstrates potential device benefits relative to an SCMPK during both non-perturbed and perturbed walking.
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Affiliation(s)
- J T Lee
- Department of Mechanical Engineering Vanderbilt University, Nashville, TN, USA
| | - H L Bartlett
- Department of Mechanical Engineering Vanderbilt University, Nashville, TN, USA
| | - M Goldfarb
- Department of Mechanical Engineering Vanderbilt University, Nashville, TN, USA
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Jasek A, Parr T, Coufal CD, Lee JT. Research Note: Evaluation of manganese hydroxychloride in 45-wk-old white leghorn layers using yolk and shell manganese content. Poult Sci 2020; 99:1084-1087. [PMID: 32029144 PMCID: PMC7587850 DOI: 10.1016/j.psj.2019.12.022] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 10/07/2019] [Indexed: 11/30/2022] Open
Abstract
The objective of the current study was to evaluate increasing levels of manganese hydroxychloride (MHC) in 45-wk-old white leghorn laying hens, using yolk and shell manganese (Mn) content as a potential marker for Mn concentration. A total of 80, 45-wk-old white leghorns were assigned to 6 dietary treatments, each consisting of 14 individually caged laying hens, with the exception of the reference diet containing 10 individually caged laying hens. The experiment consisted of a reference diet that contained 70 ppm of supplemental inorganic Mn in the form of Mn oxide and 5 experimental treatments each containing 0, 15, 30, 60, and 90 ppm supplemental MHC. Experimental birds were subjected to a 21 D depletion phase in which no supplemental Mn was included in the diet; however, during this time reference fed birds were fed the control diet (70 ppm Mn). After the 21 D depletion phase, the depleted birds were fed experimental diets for a 35 D evaluation period. Yolk and shell Mn content were analyzed at the end of the depletion phase and during the experimental phase on day 5, 10, 15, 25, and 35. During the experimental phase, Mn was replenished in the yolk and shell in all experimental treatments containing supplemental Mn; however, dose and time impacted the rate of replenishment. The yolk tended to be more sensitive to variations in Mn level as increases in Mn inclusion significantly (P < 0.05) increased concentration. These data demonstrate the ability to deplete and replenish Mn, and the use of egg yolk Mn concentration as measurement for determining changes in dietary Mn. At the conclusion of the experiment at 35 D, 60 ppm of Mn hydroxychloride seemed to be adequate in replenishing Mn to the level of the reference.
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Affiliation(s)
- A Jasek
- Poultry Science Department, Texas A&M AgriLife Research, College Station, TX 77843, USA.
| | - Terri Parr
- Micronutrients USA LLC, Indianapolis, IN 46241, USA
| | - C D Coufal
- Poultry Science Department, Texas A&M AgriLife Research, College Station, TX 77843, USA
| | - J T Lee
- Poultry Science Department, Texas A&M AgriLife Research, College Station, TX 77843, USA
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18
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Han JH, Lee HJ, Han JW, Suh SW, Lee JR, Byun S, Kim KS, Kim SY, Lee JT, Yoo E, Chang NH, Kim TH, Kim KW. Loss of Functional Dentition is Associated with Cognitive Impairment. J Alzheimers Dis 2020; 73:1313-1320. [PMID: 31929161 DOI: 10.3233/jad-190971] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Although tooth loss is known to increase the risk of cognitive impairment and dementia, few studies have investigated the association between functional teeth including rehabilitated lost teeth and cognitive functionObjective:We investigated the associations of the numbers of functional teeth and functional occlusal units with cognitive impairment and cognitive function in late life. METHODS The current study was conducted as a part of the Korean Longitudinal Study on Cognitive Aging and Dementia (KLOSCAD), a community-based elderly cohort study. We analyzed 411 participants who have agreed with the additional dental exam. Geriatric psychiatrists and neuropsychologists administered the Consortium to Establish a Registry for Alzheimer's disease Assessment Packet Clinical and Neuropsychological Assessment Battery to all participants, and dentists examined their dental status. RESULTS Higher number of functional teeth (OR = 0.955, 95% CI = 0.914-0.997, p = 0.037) and higher number of functional occlusal units (OR = 0.900, 95% CI = 0.813-0.996, p = 0.042) were associated with lower odds of cognitive impairment. When we analyzed these relationships separated by the location of teeth, only the numbers of functional teeth (OR = 0.566, 95% CI = 0.373-0.857, p = 0.007) and functional occlusal units (OR = 0.399, 95% CI = 0.213-0.748, p = 0.004) in the premolar area were associated with lower odds of cognitive impairment. CONCLUSION Loss of functional teeth and functional occlusal units (especially in the premolar region) were associated with increased cognitive impairment.
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Affiliation(s)
- Ji Hyun Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ji Won Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Seung Wan Suh
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
| | | | - Seonjeong Byun
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Keun Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sung Yeol Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jung-Tae Lee
- Department of Periodontics, Dankook University College of Dentistry Jukjeon Dental Hospital, Yongin, Korea
| | - Eunha Yoo
- Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Na-Hee Chang
- Biomedical Research Institute, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Tae Hui Kim
- Department of Psychiatry, Yonsei University Wonju Severance Christian Hospital, Wonju, Korea
| | - Ki Woong Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Psychiatry, Seoul National University, College of Medicine, Seoul, Korea.,Department of Brain and Cognitive Science, Seoul National University College of Natural Sciences, Seoul, Korea.,National Institute of Dementia, Seongnam, Korea
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19
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Sum G, Koh GCH, Mercer SW, Lim YW, Majeed A, Oldenburg B, Lee JT. Patients with more comorbidities have better detection but poorer management of chronic diseases. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz185.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The burden of non-communicable diseases (NCDs) is rising rapidly in middle-income countries (MICs), where NCDs are often undiagnosed, untreated and uncontrolled. How comorbidity impacts diagnosis, treatment, and control of NCDs is an emerging area of research inquiry and have significant clinical implications as highlighted in the recent National Institute for Care Excellence (NICE) guidelines for treating patients suffering from multiple NCDs. This is the first study to examine the association between increasing numbers of comorbidities with being undiagnosed, intreated, and uncontrolled for NCDs, in six large MICs.
Methods
Cross-sectional analysis of WHO SAGE Wave 1 (2007-10), which consisted of adults aged ≥18 years from six populous MICs including, China, Ghana, India, Mexico, Russia and South Africa (overall n = 41, 557).
Results
Higher number of comorbidities was associated with better detection of hypertension, angina and arthritis, and better odds of having treatment for hypertension and angina. However, increasing comorbidity had the opposite effect on being uncontrolled, and was associated with increased odds of uncontrolled hypertension, angina, arthritis, and asthma. Comorbidity with concordant conditions was associated with improved diagnosis and treatment of hypertension and angina. Comorbidity with concordant conditions was not associated with decreased nor increased odds of being uncontrolled for all NCDs.
Conclusions
Patients with more comorbidities have better diagnosis of chronic conditions, but this does not translate into better management and control of these conditions. Improving continuity of care and monitoring treatment are priorities for health systems with ageing populations.
Key messages
Patients with more comorbidities have better diagnosis of chronic conditions. but this does not translate into better management and control of these conditions.
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Affiliation(s)
- G Sum
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - G C H Koh
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - S W Mercer
- Usher Institute of Population Health Sciences, University of Edinburgh, UK
| | - Y W Lim
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - A Majeed
- Department of Primary Care and Public Health, Imperial College London, UK
| | - B Oldenburg
- Nossal Institute for Global Health, University of Melbourne, Melbourne, Australia
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An H, Lee JT, Oh SE, Park KM, Hu KS, Kim S, Chung MK. Adjunctive hyperbaric oxygen therapy for irradiated rat calvarial defects. J Periodontal Implant Sci 2019; 49:2-13. [PMID: 30847252 PMCID: PMC6399085 DOI: 10.5051/jpis.2019.49.1.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/30/2019] [Indexed: 01/26/2023] Open
Abstract
Purpose The aim of this study was to conduct a histologic evaluation of irradiated calvarial defects in rats 4 weeks after applying fibroblast growth factor-2 (FGF-2) with hyaluronan or biphasic calcium phosphate (BCP) block in the presence or absence of adjunctive hyperbaric oxygen (HBO) therapy. Methods Twenty rats were divided into HBO and non-HBO (NHBO) groups, each of which was divided into FGF-2 and BCP-block subgroups according to the grafted material. Localized radiation with a single 12-Gy dose was applied to the calvaria of rats to simulate radiotherapy. Four weeks after applying this radiation, 2 symmetrical circular defects with a diameter of 6 mm were created in the parietal bones of each animal. The right-side defect was filled with the materials mentioned above and the left-side defect was not filled (as a control). All defects were covered with a resorbable barrier membrane. During 4 weeks of healing, 1 hour of HBO therapy was applied to the rats in the HBO groups 5 times a week. The rats were then killed, and the calvarial specimens were harvested for radiographic and histologic analyses. Results New bone formation was greatest in the FGF-2 subgroup, and improvement was not found in the BCP subgroup. HBO seemed to have a minimal effect on new bone formation. There was tendency for more angiogenesis in the HBO groups than the NHBO groups, but the group with HBO and FGF-2 did not show significantly better outcomes than the HBO-only group or the NHBO group with FGF-2. Conclusions HBO exerted beneficial effects on angiogenesis in calvarial defects of irradiated rats over a 4-week healing period, but it appeared to have minimal effects on bone regeneration. FGF-2 seemed to enhance new bone formation and angiogenesis, but its efficacy appeared to be reduced when HBO was applied.
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Affiliation(s)
- Heesuk An
- Department of Prosthodontics, Yonsei University College of Dentistry, Seoul, Korea
| | - Jung-Tae Lee
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Seo-Eun Oh
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Kyeong-Mee Park
- Department of Advanced General Dentistry, Yonsei University College of Dentistry, Seoul, Korea
| | - Kyung-Seok Hu
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Sungtae Kim
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Moon-Kyu Chung
- Department of Prosthodontics, Yonsei University College of Dentistry, Seoul, Korea
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21
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Jung HM, Lee JE, Lee SJ, Lee JT, Kwon TY, Kwon TG. Development of an experimental model for radiation-induced inhibition of cranial bone regeneration. Maxillofac Plast Reconstr Surg 2018; 40:34. [PMID: 30525010 PMCID: PMC6249347 DOI: 10.1186/s40902-018-0173-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 09/20/2018] [Indexed: 01/02/2023] Open
Abstract
Background Radiation therapy is widely employed in the treatment of head and neck cancer. Adverse effects of therapeutic irradiation include delayed bone healing after dental extraction or impaired bone regeneration at the irradiated bony defect. Development of a reliable experimental model may be beneficial to study tissue regeneration in the irradiated field. The current study aimed to develop a relevant animal model of post-radiation cranial bone defect. Methods A lead shielding block was designed for selective external irradiation of the mouse calvaria. Critical-size calvarial defect was created 2 weeks after the irradiation. The defect was filled with a collagen scaffold, with or without incorporation of bone morphogenetic protein 2 (BMP-2) (1 μg/ml). The non-irradiated mice treated with or without BMP-2-included scaffold served as control. Four weeks after the surgery, the specimens were harvested and the degree of bone formation was evaluated by histological and radiographical examinations. Results BMP-2-treated scaffold yielded significant bone regeneration in the mice calvarial defects. However, a single fraction of external irradiation was observed to eliminate the bone regeneration capacity of the BMP-2-incorporated scaffold without influencing the survival of the animals. Conclusion The current study established an efficient model for post-radiation cranial bone regeneration and can be applied for evaluating the robust bone formation system using various chemokines or agents in unfavorable, demanding radiation-related bone defect models.
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Affiliation(s)
- Hong-Moon Jung
- 1Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940 Republic of Korea.,2Department of Radiologic Technology, Daegu Health College, Taejeon-Dong 15, Youngsong-Ro, Buk-Gu, Daegu, Republic of Korea
| | - Jeong-Eun Lee
- 3Department of Radiation Oncology, School of Medicine, Kyungpook National University, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Seoung-Jun Lee
- 4Department of Radiation Oncology, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Jung-Tae Lee
- 1Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940 Republic of Korea
| | - Tae-Yub Kwon
- 5Department of Dental Materials, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940 Republic of Korea
| | - Tae-Geon Kwon
- 1Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940 Republic of Korea
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Sum G, Koh GCH, Atun R, Oldenburg B, Lee JT, Vellakkal S. Multimorbidity Patterns and Implications for healthcare utilisation and quality of life in six LMICs. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky212.475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] Open
Affiliation(s)
- G Sum
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - GCH Koh
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - R Atun
- Harvard T.H. Chan School of Public Health, Harvard University, Boston, USA
| | - B Oldenburg
- Centre for Health Equity, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - JT Lee
- Nossal Institute for Global Health, University of Melbourne, Melbourne, Australia
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23
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Bodle BC, Alvarado C, Shirley RB, Mercier Y, Lee JT. Evaluation of different dietary alterations in their ability to mitigate the incidence and severity of woody breast and white striping in commercial male broilers. Poult Sci 2018; 97:3298-3310. [PMID: 29762760 DOI: 10.3382/ps/pey166] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022] Open
Abstract
The following study was conducted to define how multiple nutritional strategies affect broiler performance, meat yield, and the presence and severity of white striping (WS) and woody breast (WB) in high-yielding broilers. Relative to a commercial set of reference broiler diets (Commercial reference diet; Trt 1) that were fed in a 4-phase program, the following nutritional strategies were investigated: increasing the ratio of digestible arginine: digestible lysine (dArg: dLys ranged from 113 to 126; Trt 2), supplementing Trt 1 with 94.4 mg vitamin C/kg feed (Trt 3), doubling the vitamin pack inclusion rate (Trt 4), reducing the digestible amino acid density (dAA) of only the grower phase by 15% and feeding the same Trt 1 starter, finisher, and withdraw diets (Trt 5), and combining the 4 strategies just mentioned (Trt 6). There was no difference in performance at the end of the starter phase (P = 0.066); however, at the end of the grower and finisher phases, feeding lower dAA grower diets suppressed BW (Trts 5 and 6; P < 0.001) and increased FCR. Differences in performance amongst all treatments disappeared at day 49 (P = 0.220). No differences were observed in average breast weight (P = 0.188); however, breast yield (as a % of live weight) was greatest for Trt 1 and least for Trt 6 (P = 0.041). The WB score dropped from 1.83 in Trt 1 to 1.49, 1.27, 1.74, 1.53, and 1.43 in treatments 2 to 6, respectively (P = 0.018). These changes were the result of a shift in WB score, where the WB class that contained scores of 2 and 3 shifted from 61.3% in Trt 1 to 49.3, 35.9, 60.0, 50.8, and 38.7 in treatments 2 to 6, respectively. Given the FCR, breast weight data and the fact that high WB scores result in a devaluation of breast meat, feeding a higher ratio of dArg: dLys, higher vitamin C, or lower dAA in the grower phase results in better breast meat quality and value.
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Affiliation(s)
- B C Bodle
- Poultry Science Department, Texas AgriLife Research, Texas A&M System, College Station, TX 77843, USA
| | - C Alvarado
- Poultry Science Department, Texas AgriLife Research, Texas A&M System, College Station, TX 77843, USA
| | - R B Shirley
- Adisseo USA, Inc., Alpharetta, GA 30009, USA
| | - Y Mercier
- Adisseo France, SAS, Antony, 92160, France
| | - J T Lee
- Poultry Science Department, Texas AgriLife Research, Texas A&M System, College Station, TX 77843, USA
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Jasek A, Latham RE, Mañón A, Llamas-Moya S, Adhikari R, Poureslami R, Lee JT. Impact of a multicarbohydrase containing α-galactosidase and xylanase on ileal digestible energy, crude protein digestibility, and ileal amino acid digestibility in broiler chickens. Poult Sci 2018; 97:3149-3155. [PMID: 29897592 DOI: 10.3382/ps/pey193] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 04/25/2018] [Indexed: 11/20/2022] Open
Abstract
Exogenous enzymatic supplementation of poultry feeds, including α-galactosidase and xylanase, has been shown to increase metabolically available energy, although little information has been published on the impact on amino acid digestibility. An experiment was conducted to investigate a multicarbohydrase containing α-galactosidase and xylanase on amino acid digestibility, ileal digestible energy (IDE), and CP in male broiler chicks. The experiment was a 2 × 2 (diet × enzyme) factorial arrangement with 15 replicates of 8 male broilers per replicate raised for 21 d in a battery setting. The 2 dietary treatments included a positive control (PC) and a negative control (NC) diet formulated to contain 2.5% less calculated AME and digestible amino acids. Each of these diets was fed with and without enzyme. Broilers were fed a starter diet from 0-14 d (crumble) and a grower from 14-21 d (pellet). Birds were sampled on day 21 to determine ileal amino acid digestibility, IDE, and CP digestibility. Titanium dioxide (TiO2) was used as an indigestible marker for the determination of digestibility coefficients. Total ileal amino acid digestibility was increased (P = 0.008) by 3.80% with the inclusion of enzyme. Methionine and lysine digestibility was improved (P < 0.05) with the inclusion of enzyme by 3.37% and 2.61%, respectively. Enzyme inclusion increased (P = 0.001) cysteine digestibility by 9.3%. Diet-influenced ileal amino acid digestibility with tryptophan, threonine, isoleucine, and valine digestibility being increased (P < 0.05) in the PC when compared to the NC. IDE was decreased (P = 0.037) in broilers fed the NC diet by 100 kcal/kg feed when compared to broilers fed the PC diet. Enzyme inclusion increased (P = 0.047) IDE value by 90 kcal/kg. Crude protein digestibility was not influenced by diet; however, similar improvements in CP digestibility with enzyme inclusion were observed as with energy. These data support the benefits of a multicarbohydrase containing α-galactosidase and xylanase inclusion to improve nutrient and ileal amino acid digestibility across multiple dietary nutrient profiles.
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Affiliation(s)
- A Jasek
- Poultry Science Department, Texas A&M AgriLife Research, College Station, 101 Kleberg, College Station, TX 77843-2472, USA
| | - R E Latham
- Poultry Science Department, Texas A&M AgriLife Research, College Station, 101 Kleberg, College Station, TX 77843-2472, USA
| | - A Mañón
- Kerry Inc, Beloit, WI 53511, USA
| | | | | | | | - J T Lee
- Poultry Science Department, Texas A&M AgriLife Research, College Station, 101 Kleberg, College Station, TX 77843-2472, USA
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Nyrop KA, Deal AM, Choi SK, Wagoner CW, Lee JT, Wood WA, Anders C, Carey LA, Dees EC, Jolly TA, Reeder-Hayes KE, Muss HB. Correction to: Measuring and understanding adherence in a home-based exercise intervention during chemotherapy for early breast cancer. Breast Cancer Res Treat 2018; 173:245. [PMID: 30306432 DOI: 10.1007/s10549-018-4975-8] [Citation(s) in RCA: 3] [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: 11/25/2022]
Abstract
In the original publication, the sixth author name was published incorrectly as A. Wood. The correct author name should read as W. A. Wood.
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Affiliation(s)
- K A Nyrop
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - A M Deal
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - S K Choi
- Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - C W Wagoner
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J T Lee
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - W A Wood
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - C Anders
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - L A Carey
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - E C Dees
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - T A Jolly
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - K E Reeder-Hayes
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - H B Muss
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Latham RE, Williams MP, Walters HG, Carter B, Lee JT. Efficacy of β-mannanase on broiler growth performance and energy utilization in the presence of increasing dietary galactomannan. Poult Sci 2018; 97:549-556. [PMID: 29121338 DOI: 10.3382/ps/pex309] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/19/2017] [Indexed: 11/20/2022] Open
Abstract
An experiment was conducted to investigate the impact of β-mannanase inclusion on growth performance, viscosity, and energy utilization in broilers fed diets varying in galactomannan (GM) concentrations. Treatments were arranged as a 3 (GM concentration) × 3 (β-mannanase inclusion) factorial randomized complete block design with 12 replicates of 29 male broilers per replicate for a 42-d experiment. Efforts were made to reduce the amount of soybean meal, and thus GM, in the basal diet with guar gum included at 0, 0.21, or 0.42% to achieve a GM supplementation of 1,500 and 3,000 ppm, respectively. Beta-mannanase was included at 0, 200, or 400 g/ton. Broilers were fed a starter (d 0 to 14), grower (d 15 to 28), and finisher diets (d 29 to 42). Growth performance was monitored and ileal contents collected on d 14, 28, and 42 to determine ileal digestible energy (IDE) and intestinal viscosity. Increasing levels of GM negatively (P < 0.05) influenced body weight (BW) following the starter and grower periods and increased (P < 0.01) mortality corrected feed conversion ratio (FCR) throughout the study. Reduced growth performance was associated with increased (P < 0.05) intestinal viscosity and decreased (P < 0.05) IDE when GM inclusion was increased. Inclusion of β-mannanase in diets containing supplemental GM on d 28, increased average BW to levels similar to diets without supplemental GM. Improvements in FCR were also observed with β-mannanase inclusion in diets containing supplemental GM. Ileal digestible energy was increased (P < 0.05) with the addition of β-mannanase on d 28 of age. Multiple interactions in growth performance, intestinal viscosity, and IDE were associated with β-mannanase administration. In conclusion, β-mannanase improved IDE, reduced intestinal viscosity, and improved growth performance; however, the observed benefit was dependent upon dietary GM concentration.
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Affiliation(s)
- R E Latham
- Poultry Science Department, Texas A&M AgriLife Research
| | - M P Williams
- Poultry Science Department, Texas A&M AgriLife Research
| | - H G Walters
- Poultry Science Department, Texas A&M AgriLife Research
| | - B Carter
- Elanco Animal Health, Greenfield, IN
| | - J T Lee
- Poultry Science Department, Texas A&M AgriLife Research
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Askelson TE, Flores CA, Dunn-Horrocks SL, Dersjant-Li Y, Gibbs K, Awati A, Lee JT, Duong T. Effects of direct-fed microorganisms and enzyme blend co-administration on intestinal bacteria in broilers fed diets with or without antibiotics. Poult Sci 2018; 97:54-63. [PMID: 29077888 DOI: 10.3382/ps/pex270] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 09/28/2017] [Indexed: 01/04/2023] Open
Abstract
Direct-fed microorganisms (DFM) and exogenous enzymes have been demonstrated to improve growth performance in poultry and are potentially important alternatives to antibiotic growth promoters (AGP). We investigated the administration of a feed additive composed of a DFM product containing spores of 3 Bacillus amyloliquefaciens strains and an enzyme blend of endo-xylanase, α-amylase, and serine-protease in diets with or without sub-therapeutic antibiotics in broiler chickens over a 42-d growth period. Evaluation of growth performance determined feed efficiency of broiler chickens which were administered the feed additive was comparable to those fed a diet containing AGPs. Characterization of the gastrointestinal microbiota using culture-dependent methods determined administration of the feed additive increased counts of total Lactic Acid Bacteria (LAB) relative to a negative control and reduced Clostridium perfringens to levels similar to antibiotic administration. Additionally, greater counts of total LAB were observed to be significantly associated with reduced feed conversion ratio, whereas greater counts of C. perfringens were observed to be significantly associated with increased feed conversion ratio. Our results suggest the co-administration of DFMs and exogenous enzymes may be an important component of antibiotic free poultry production programs and LAB and C. perfringens may be important targets in the development of alternatives to AGPs in poultry production.
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Affiliation(s)
- T E Askelson
- Department of Poultry Science, Texas A&M University
| | - C A Flores
- Department of Poultry Science, Texas A&M University
| | | | - Y Dersjant-Li
- Danisco Animal Nutrition, DuPont Industrial Biosciences, Marlborough, UK
| | - K Gibbs
- Danisco Animal Nutrition, DuPont Industrial Biosciences, Marlborough, UK
| | - A Awati
- Danisco Animal Nutrition, DuPont Industrial Biosciences, Marlborough, UK
| | - J T Lee
- Department of Poultry Science, Texas A&M University
| | - T Duong
- Department of Poultry Science, Texas A&M University
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28
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Arsenault RJ, Lee JT, Latham R, Carter B, Kogut MH. Changes in immune and metabolic gut response in broilers fed β-mannanase in β-mannan-containing diets. Poult Sci 2018; 96:4307-4316. [PMID: 29053819 DOI: 10.3382/ps/pex246] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [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: 04/25/2017] [Accepted: 08/10/2017] [Indexed: 11/20/2022] Open
Abstract
β-galactomannans found in soy-based broiler feed are known to cause physiological effects that are hypothesized to be related to gut inflammation. Previous studies have shown that the incorporation of β-mannanase in the diet or as a supplement results in improvements to certain performance parameters related to gut health and feed conversion. Using kinome analysis, we characterized the mechanism of β-galactomannan activity and supplementation with β-mannanase on the gut of commercial broilers to understand the mode of action. Two doses of β-mannanase (200 and 400 g/ton of feed) with and without inclusion of additional β-galactomannan (3,000 ppm) were tested at 3 time points (d 14, d 28, and d 42 post hatch). Broilers were fed starter (d 0 to 14), grower (d 15 to 28), and finisher diets (d 29 to 42). Jejuna were collected from birds from each treatment condition and time point. Cluster analysis of the kinome data showed that birds clustered first by age, then predominantly by whether β-mannanase had been included in the diet. Biological pathway analysis showed that the inclusion of additional β-galactomannan into the diet resulted in increased signaling related to immune response, relative to our normal control diet (with reduced soybean meal). The addition of β-mannanase to the enhanced β-galactomannan diet eliminated the majority of this immune-related signaling, indicating that the feed-induced immune response within the jejuna had been eliminated by the addition of β-mannanase. We also saw changes in specific metabolic and gut function pathways in birds fed β-mannanase. These observed changes in β-mannanase-fed birds are likely the mechanism for the enhanced performance and feed conversion observed in birds given β-mannanase in their diets.
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Affiliation(s)
- R J Arsenault
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
| | - J T Lee
- Poultry Science Department, Texas A&M University, College Station, TX
| | - R Latham
- Poultry Science Department, Texas A&M University, College Station, TX
| | - B Carter
- Elanco Animal Health, Greenfield, IN
| | - M H Kogut
- Southern Plains Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, College Station, TX
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29
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Park SA, Lee HJ, Kim KS, Lee SJ, Lee JT, Kim SY, Chang NH, Park SY. In Vivo Evaluation of 3D-Printed Polycaprolactone Scaffold Implantation Combined with β-TCP Powder for Alveolar Bone Augmentation in a Beagle Defect Model. Materials (Basel) 2018; 11:ma11020238. [PMID: 29401707 PMCID: PMC5848935 DOI: 10.3390/ma11020238] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/20/2018] [Accepted: 01/31/2018] [Indexed: 01/10/2023]
Abstract
Insufficient bone volume is one of the major challenges encountered by dentists after dental implant placement. This study aimed to evaluate the efficacy of a customized three-dimensional polycaprolactone (3D PCL) scaffold implant fabricated with a 3D bio-printing system to facilitate rapid alveolar bone regeneration. Saddle-type bone defects were surgically created on the healed site after extracting premolars from the mandibles of four beagle dogs. The defects were radiologically examined using computed tomography for designing a customized 3D PCL scaffold block to fit the defect site. After fabricating 3D PCL scaffolds using rapid prototyping, the scaffolds were implanted into the alveolar bone defects along with β-tricalcium phosphate powder. In vivo analysis showed that the PCL blocks maintained the physical space and bone conductivity around the defects. In addition, no inflammatory infiltrates were observed around the scaffolds. However, new bone formation occurred adjacent to the scaffolds, rather than directly in contact with them. More new bone was observed around PCL blocks with 400/1200 lattices than around blocks with 400/400 lattices, but the difference was not significant. These results indicated the potential of 3D-printed porous PCL scaffolds to promote alveolar bone regeneration for defect healing in dentistry.
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Affiliation(s)
- Su A Park
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon 34103, Korea.
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Korea.
| | - Keun-Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Korea.
| | - Sang Jin Lee
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon 34103, Korea.
| | - Jung-Tae Lee
- Department of Periodontology, Dankook University, Yongin-si 16890, Korea.
| | - Sung-Yeol Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Korea.
| | - Na-Hee Chang
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Korea.
| | - Shin-Young Park
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Korea.
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30
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Nyrop KA, Deal AM, Choi SK, Wagoner CW, Lee JT, Wood WA, Anders C, Carey LA, Dees EC, Jolly TA, Reeder-Hayes KE, Muss HB. Measuring and understanding adherence in a home-based exercise intervention during chemotherapy for early breast cancer. Breast Cancer Res Treat 2017; 168:43-55. [PMID: 29124455 DOI: 10.1007/s10549-017-4565-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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: 10/26/2017] [Accepted: 11/01/2017] [Indexed: 12/26/2022]
Abstract
PURPOSE Ensuring and measuring adherence to prescribed exercise regimens are fundamental challenges in intervention studies to promote exercise in adults with cancer. This study reports exercise adherence in women who were asked to walk 150 min/week throughout chemotherapy treatment for early breast cancer. Participants were asked to wear a FitbitTM throughout their waking hours, and Fitbit steps were uploaded directly into study computers. METHODS Descriptive statistics are reported, and both unadjusted and multivariable linear regression models were used to assess associations between participant characteristics, breast cancer diagnosis, treatment, chemotherapy toxicities, and patient-reported symptoms with average Fitbit steps/week. RESULTS Of 127 women consented to the study, 100 had analyzable Fitbit data (79%); mean age was 48 and 31% were non-white. Mean walking steps were 3956 per day. Nineteen percent were fully adherent with the target of 6686 steps/day and an additional 24% were moderately adherent. In unadjusted analysis, baseline variables associated with fewer Fitbit steps were: non-white race (p = 0.012), high school education or less (p = 0.0005), higher body mass index (p = 0.0024), and never/almost never drinking alcohol (p = 0.0048). Physical activity variables associated with greater Fitbit steps were: pre-chemotherapy history of vigorous physical activity (p = 0.0091) and higher self-reported walking minutes/week (p < 0.001), and higher outcome expectations from exercise (p = 0.014). Higher baseline anxiety (p = 0.03) and higher number of chemotherapy-related symptoms rates "severe/very severe" (p = 0.012) were associated with fewer steps. In multivariable analysis, white race was associated with 12,146 greater Fitbit steps per week (p = 0.004), as was self-reported walking minutes prior to start of chemotherapy (p < 0.0001). CONCLUSIONS Inexpensive commercial-grade activity trackers, with data uploaded directly into research computers, enable objective monitoring of home-based exercise interventions in adults diagnosed with cancer. Analysis of the association of walking steps with participant characteristics at baseline and toxicities during chemotherapy can identify reasons for low/non-adherence with prescribed exercise regimens.
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Affiliation(s)
- K A Nyrop
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA. .,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - A M Deal
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - S K Choi
- Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - C W Wagoner
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J T Lee
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - W A Wood
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - C Anders
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - L A Carey
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - E C Dees
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - T A Jolly
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - K E Reeder-Hayes
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - H B Muss
- Division of Hematology/Oncology, School of Medicine, University of North Carolina at Chapel Hill, 170 Manning Drive, Campus, PO Box 7305, Chapel Hill, NC, 27599-7305, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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31
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Chang K, Lee JT, Vamos E, Palladino R, Soljak M, Majeed A, Millett C. Socio-demographic inequalities in the effectiveness of England’s NHS Health Check. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Chang
- Imperial College London, London, UK
| | - JT Lee
- Imperial College London, London, UK
| | - E Vamos
- Imperial College London, London, UK
| | | | - M Soljak
- Imperial College London, London, UK
| | - A Majeed
- Imperial College London, London, UK
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32
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Park SY, Ahn S, Lee JT, Yun PY, Lee YJ, Lee JY, Song YW, Chang YS, Lee HJ. Periodontal inflamed surface area as a novel numerical variable describing periodontal conditions. J Periodontal Implant Sci 2017; 47:328-338. [PMID: 29093989 PMCID: PMC5663669 DOI: 10.5051/jpis.2017.47.5.328] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 09/26/2017] [Indexed: 12/23/2022] Open
Abstract
Purpose A novel index, the periodontal inflamed surface area (PISA), represents the sum of the periodontal pocket depth of bleeding on probing (BOP)-positive sites. In the present study, we evaluated correlations between PISA and periodontal classifications, and examined PISA as an index integrating the discrete conventional periodontal indexes. Methods This study was a cross-sectional subgroup analysis of data from a prospective cohort study investigating the association between chronic periodontitis and the clinical features of ankylosing spondylitis. Data from 84 patients without systemic diseases (the control group in the previous study) were analyzed in the present study. Results PISA values were positively correlated with conventional periodontal classifications (Spearman correlation coefficient=0.52; P<0.01) and with periodontal indexes, such as BOP and the plaque index (PI) (r=0.94; P<0.01 and r=0.60; P<0.01, respectively; Pearson correlation test). Porphyromonas gingivalis (P. gingivalis) expression and the presence of serum P. gingivalis antibodies were significant factors affecting PISA values in a simple linear regression analysis, together with periodontal classification, PI, bleeding index, and smoking, but not in the multivariate analysis. In the multivariate linear regression analysis, PISA values were positively correlated with the quantity of current smoking, PI, and severity of periodontal disease. Conclusions PISA integrates multiple periodontal indexes, such as probing pocket depth, BOP, and PI into a numerical variable. PISA is advantageous for quantifying periodontal inflammation and plaque accumulation.
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Affiliation(s)
- Shin-Young Park
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Soyeon Ahn
- Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jung-Tae Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Periodontology, Dankook University Jukjeon Dental Hospital, Yongin, Korea
| | - Pil-Young Yun
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yun Jong Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Joo Youn Lee
- Department of Molecular Medicine and Biopharmaceutical Sciences, BK21 Plus Graduate School of Convergence Science and Technology, Medical Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Yeong Wook Song
- Department of Molecular Medicine and Biopharmaceutical Sciences, BK21 Plus Graduate School of Convergence Science and Technology, Medical Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Yoon-Seok Chang
- Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seongnam, Korea.,Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
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Palladino R, Lee JT, Hone T, Filippidis F, Millett C. The Great Recession and Increased Cost Sharing In European Health System. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw164.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pieniazek J, Smith KA, Williams MP, Manangi MK, Vazquez-Anon M, Solbak A, Miller M, Lee JT. Evaluation of increasing levels of a microbial phytase in phosphorus deficient broiler diets via live broiler performance, tibia bone ash, apparent metabolizable energy, and amino acid digestibility. Poult Sci 2016; 96:370-382. [PMID: 27444440 DOI: 10.3382/ps/pew225] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/08/2016] [Accepted: 05/09/2016] [Indexed: 11/20/2022] Open
Abstract
The objective was to investigate increasing concentrations of an evolved microbial phytase on male broiler performance, tibia bone ash, AME, and amino acid digestibility when fed diets deficient in available phosphorus (aP). Experiment 1 evaluated the effects of phytase during a 21 d battery cage study and Experiment 2 was a 42 d grow-out. Experiment 1 included six treatments; negative control (NC) with an aP level of 0.23% (starter) and 0.19% (grower), two positive controls (PC) consisting of an additional 0.12% and 0.22% aP (PC 1 and PC 2), and the NC supplemented with three levels of phytase (250, 500, and 2,000 U/kg). The NC diet reduced (P < 0.05) FC, BW, and bone ash. Phytase increased (P < 0.05) BW with 2,000 U/kg phytase yielding similar results to the PC2, and improved FCR and increased bone ash was observed at all phytase levels. Amino acid digestibility coefficients were increased (P < 0.05) with phytase at 250 U/kg. Phytase at all rates increased (P < 0.05) AME to levels similar level as PC diets. Linear regression analysis indicated average P equivalency values for BW and bone ash of 0.137, 0.147, and 0.226 for phytase inclusion of 250, 500, and 2000 U/kg, respectively. Experiment 2 included a PC consisting of 0.45%, 0.41%, and 0.38% aP for the starter, grower, and finisher, respectively; NC with reduced aP of 0.17%; and phytase at 500 and 2,000 U/kg. Phytase increased BW (P < 0.05) compared to the NC as 2,000 U/kg phytase resulted in further BW increases compared to the PC (starter and grower). Phytase improved FCR to levels comparable to the PC, with supplementation at 2,000 U/kg resulting in improvements beyond the PC in the starter phase. Amino acid digestibility coefficients were increased with phytase at 2,000 U/kg to levels comparable to that of the PC. These data confirm that the inclusion of phytase improves broiler performance and bone mineralization in aP reduced diets and levels beyond the traditional 500 U/kg can result in further improvements.
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Affiliation(s)
- J Pieniazek
- Poultry Science Department, Texas A&M AgriLife Research and Extension, Texas A&M System, College Station, TX, USA
| | - K A Smith
- Poultry Science Department, Texas A&M AgriLife Research and Extension, Texas A&M System, College Station, TX, USA
| | - M P Williams
- Poultry Science Department, Texas A&M AgriLife Research and Extension, Texas A&M System, College Station, TX, USA
| | | | | | - A Solbak
- Verenium Corporation, San Diego, CA
| | - M Miller
- Verenium Corporation, San Diego, CA
| | - J T Lee
- Poultry Science Department, Texas A&M AgriLife Research and Extension, Texas A&M System, College Station, TX, USA
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Lee JT, Cho SA. Biomechanical evaluation of laser-etched Ti implant surfaces vs. chemically modified SLA Ti implant surfaces: Removal torque and resonance frequency analysis in rabbit tibias. J Mech Behav Biomed Mater 2016; 61:299-307. [PMID: 27093590 DOI: 10.1016/j.jmbbm.2016.03.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/21/2016] [Accepted: 03/31/2016] [Indexed: 11/25/2022]
Abstract
PURPOSE To compare osseointegration and implant stability of two types of laser-etched (LE) Ti implants with a chemically-modified, sandblasted, large-grit and acid-etched (SLA) Ti implant (SLActive(®), Straumann, Basel, Switzerland), by evaluating removal torque and resonance frequency between the implant surface and rabbit tibia bones. We used conventional LE Ti implants (conventional LE implant, CSM implant, Daegu, Korea) and LE Ti implants that had been chemically activated with 0.9% NaCl solution (LE active implant) for comparison with SLActive(®) implants MATERIALS AND METHODS Two types of 3.3×8mm laser-etched Ti implants - conventional LE implants and LE active implants were prepared. LE implants and SLActive(®) implants were installed on the left and right tibias of 10 adult rabbits weighing approximately 3.0kg LE active implants and SLActive(®) implants were installed on the left and right tibias of 11 adult rabbits. After installation, we measured insertion torque (ITQ) and resonance frequency (ISQ). Three weeks (LE active) or 4 weeks (conventional LE) after installation, we measured removal torque (RTQ) and ISQ. RESULTS In the conventional LE experiment, the mean ITQ was 16.99±6.35Ncm for conventional LE implants and 16.11±7.36Ncm for SLActive(®) implants (p=0.778>0.05). After 4 weeks, the mean of RTQ was 39.49±17.3Ncm for LE and 42.27±20.5Ncm for SLActive(®) (p=0.747>0.05). Right after insertion of the implants, the mean ISQ was 74.8±4.98 for conventional LE and 70.1±9.15 for SLActive(®) implants (p=0.169>0.05). After 4 weeks, the mean ISQ was 64.40±6.95 for LE and 67.70±9.83 for SLActive(®) (p=0.397>0.05). In the LE active experiment, the mean ITQ was 16.24±7.49Ncm for LE active implants and 14.33±5.06Ncm for SLActive(®) implants (p=0.491>0.05). After 3 weeks, the mean RTQ was 39.25±16.41Ncm for LE active and 41.56±10.41Ncm for SLActive(®) implants (p=0.698>0.05). Right after insertion of the implants, the mean ISQ was 58.64±10.51 for LE active implants and 53.82±15.36 for SLActive(®) implants (p=0.401>0.05). After 3 weeks, the mean ISQ was 63.82±5.88 for LE active and 66.27±6.53 for SLActive(®) (p=0.365>0.05). CONCLUSION We observed no significant differences in biomechanical bond strength to bone or implant stability in bone between the conventional LE Ti implant surface and the surface of the SLActive(®) implant or between the chemically activated LE Ti implant surface and the surface of the SLActive(®) implant during the early stage of osseointegration.
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Affiliation(s)
- Jung-Tae Lee
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Sung-Am Cho
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea.
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Chang K, Lee JT, Soljak M, Majeed A, Millett C. Impact of the NHS Health Check on global cardiovascular risk, individual risk factors and prescribing. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv171.105] [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: 11/12/2022] Open
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Ullery BW, Lee JT, Dalman RL. Snorkel/chimney and fenestrated endografts for complex abdominal aortic aneurysms. J Cardiovasc Surg (Torino) 2015; 56:707-717. [PMID: 25800354] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Complex endovascular aneurysm repair (EVAR) involves extension of the proximal aortic seal zone with preservation of branch vessel patency, thereby expanding the applicability of endografting from the infrarenal to the suprarenal aorta. Snorkel/chimney (Sn-EVAR) and fenestrated EVAR (f-EVAR) serve as the two most commonly utilized advanced endovascular techniques to combat hostile proximal neck anatomy. The purpose of this article is to describe the principles and evolution of these advanced endovascular strategies, technical considerations, and results of sn- and f-EVAR in the management of challenging neck anatomy in abdominal aortic aneurysm disease.
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Affiliation(s)
- B W Ullery
- Division of Vascular Surgery, Stanford University Stanford, CA, USA -
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Lee JT, Lee HJ, Park SY, Kim HY, Yeo IS. Consecutive unsplinted implant-supported restorations to replace lost multiple adjacent posterior teeth: A 4-year prospective cohort study. Acta Odontol Scand 2015; 73:461-6. [PMID: 25423023 DOI: 10.3109/00016357.2014.983543] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the various events occurring in unsplinted implant restoration in posterior jaws during a period of 4 years. MATERIALS AND METHODS From August 2008 to April 2009, eight volunteers (three men and five women) who had two or more consecutively missing teeth received 20 implants in posterior maxillae and mandibles. Unsplinted single crowns were delivered to each implant. For the 4-year follow-up periods, patients were enrolled in a maintenance schedule at 1, 3, 6, 12, 24, 36 and 48 months. The data, including a questionnaire, radiography, mobility and probing were recorded on regular check-ups. RESULTS A total of 20 implants in eight patients were followed up for 48 months, showing a 100% survival rate. Mean marginal bone loss around implants was 0.26 mm. Statistical analysis revealed insignificant correlation between metal-ceramic and zirconia-ceramic crowns and among implant lengths (8.5 mm, 10 mm and 11.5 mm). Mean probing depths were similar or insignificantly different, regardless of the materials used or length of implants. The most frequent complications, in decreasing order, were food impaction (65%) and porcelain chipping (45%), sensitivity (25%), pain (20%) and loose contact (15%). Compared with metal-ceramic crowns, zirconia-ceramic crowns showed more unfavorable cases of porcelain chipping (p=0.017), pain (p=0.007) and loose contact with an adjacent crown (p=0.031). CONCLUSIONS Within the limits of the sample size, this study showed that unsplinted implant-supported single restorations to replace consecutive posterior missing teeth may function well.
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Affiliation(s)
- Jung-Tae Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital , Seongnam , Korea
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Lee HJ, Lee J, Lee JT, Hong JS, Lim BS, Park HJ, Kim YK, Kim TI. Microgrooves on titanium surface affect peri-implant cell adhesion and soft tissue sealing; an in vitro and in vivo study. J Periodontal Implant Sci 2015; 45:120-6. [PMID: 26131372 PMCID: PMC4485062 DOI: 10.5051/jpis.2015.45.3.120] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 05/25/2015] [Indexed: 11/26/2022] Open
Affiliation(s)
- Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jaden Lee
- Department of Oral Health Sciences, Medical University of South Carolina College of Dental Medicine, Charleston, SC, USA. ; Department of Periodontology, Seoul National University School of Dentistry, Seoul, Korea
| | - Jung-Tae Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea. ; Department of Periodontics, Dankook University College of Dentistry Jukjeon Dental Hospital, Yongin, Korea
| | - Ji-Soo Hong
- Department of Oral Pathology, Seoul National University School of Dentistry, Seoul, Korea. ; Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Bum-Soon Lim
- Department of Dental Biomaterials, Seoul National University School of Dentistry, Seoul, Korea. ; Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
| | - Hee-Jung Park
- Department of Public Health Sciences, Korea University, Seoul, Korea
| | - Young-Kwang Kim
- Department of General Dentistry, Boston University School of Dental Medicine, Boston, MA, USA
| | - Tae-Il Kim
- Department of Periodontology, Seoul National University School of Dentistry, Seoul, Korea. ; Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
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Hwang HD, Lee JT, Koh JT, Jung HM, Lee HJ, Kwon TG. Sequential Treatment with SDF-1 and BMP-2 Potentiates Bone Formation in Calvarial Defects. Tissue Eng Part A 2015; 21:2125-35. [PMID: 25919507 DOI: 10.1089/ten.tea.2014.0571] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Stromal cell-derived factor-1 (SDF-1) protein and its receptor, CXCR-4, play an important role in tissue repair and regeneration in various organs, including the bone. SDF-1 is indispensable for bone morphogenetic protein-2 (BMP-2)-induced osteogenic differentiation. However, SDF-1 is not needed after the osteogenic induction has been activated. Since the precise condition for the additive effects of combined DF-1 and BMP-2 in bone healing had not been fully investigated, we aimed to determine the optimal conditions for SDF-1- and BMP-2-mediated bone regeneration. We examined the in vitro osteoblastic differentiation and cell migration after sequential treatments with SDF-1 and BMP-2. Based on the in vitro additive effects of SDF-1 and BMP-2, the critical size defects of mice calvaria were treated with these cytokines in various sequences. Phosphate buffered saline (PBS)-, SDF-1-, or BMP-2-soaked collagen scaffolds were implanted into the calvarial defects (n=36). Periodic percutaneous injections of PBS or the cytokine SDF-1 and BMP-2 into the implanted scaffolds were performed on days 3 and 6, postoperatively. Six experimental groups were used according to the types and sequences of the cytokine treatments. After 28 days, the mice were euthanized and bone formation was evaluated with microcomputed tomography and histology. The molecular mechanism of the additive effect of SDF-1 and BMP-2 was evaluated by analyzing intracellular signal transduction through Smad and Erk phosphorylation. The in vitro experiments revealed that, among all the treatments, the treatment with BMP-2 after SDF-1 showed the strongest osteoblastic differentiation and enhanced cell migration. Similarly, in the animal model, the treatment with SDF-1 followed by BMP-2 treatment showed the highest degree of new bone regeneration than any other groups, including the one with continuous BMP-2 treatment. This new bone formation can be partially explained by the activation of Smad and Erk pathways and enhanced cell migration. These results suggest that sequential treatment with the cytokines, SDF-1 and BMP-2, may be a promising strategy for accelerating bone regeneration in critical size defects.
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Affiliation(s)
- Hee-Don Hwang
- 1 Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University , Daegu, Republic of Korea
| | - Jung-Tae Lee
- 1 Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University , Daegu, Republic of Korea
| | - Jeong-Tae Koh
- 2 Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University , Gwangju, Republic of Korea
| | - Hong-Moon Jung
- 1 Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University , Daegu, Republic of Korea
| | - Heon-Jin Lee
- 3 Department of Oral Microbiology, School of Dentistry, Kyungpook National University , Daegu, Republic of Korea
| | - Tae-Geon Kwon
- 1 Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University , Daegu, Republic of Korea
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Lee JT, Park SY, Yi YJ, Kim YK, Lee HJ. A case report about the reconstruction procedures of the previously failed cylinderical implants site using distraction osteogenesis. J Korean Assoc Oral Maxillofac Surg 2015; 41:84-9. [PMID: 25922820 PMCID: PMC4411733 DOI: 10.5125/jkaoms.2015.41.2.84] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/24/2014] [Accepted: 12/09/2014] [Indexed: 12/03/2022] Open
Abstract
We report the eventually successful treatment of a huge bone defect and peri-implantitis following reconstruction of a previously failed intra-mobile cylinder implant system (IMZ) implant site using distraction osteogenesis (DO). In the anterior mandible, two IMZ implants failed and surgical debridement was performed in accordance to the patient's needs. Thereafter, mobility and suppuration were decreased and the patient visited the dental clinic on a regular basis for oral health maintenance. However, the inflammation did not resolve, and the bone destruction around the implants progressed for 4 years. Finally, the implants failed and a severe bone defect remained after implant removal. To reconstruct the bone defects, we attempted bone graft procedures. Titanium mesh was unsuccessfully used to obtain bone volume regeneration. However, DO subsequently was used to obtain sufficient bone volume for implant placement. The new implants were then installed, followed by prosthetic procedures. In conclusion, progression of peri-implantitis could not be arrested despite surgical intervention and repeated maintenance care for 3 years. Reconstruction of the peri-implantitis site was complicated due to its horizontal and vertical bone defects. Lesions caused by implant failure require an aggressive regenerative strategy, such as DO. DO was successful in reconstruction of a peri-implantitis site that was complicated due to horizontal and vertical bone defects.
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Affiliation(s)
- Jung-Tae Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Shin-Young Park
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yang-Jin Yi
- Department of Prosthodontics, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Young-Kyun Kim
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
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Meng FC, Lee JT, Peng GS, Sung YF. Cervical spinal cord infarction associated with the use of oral contraceptives for the treatment of acne in a healthy young woman. J Postgrad Med 2014; 61:36-7. [PMID: 25511216 PMCID: PMC4944365 DOI: 10.4103/0022-3859.147036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
| | | | | | - Y F Sung
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China (ROC)
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Lee JT, Choi SY, Kim HL, Kim JY, Lee HJ, Kwon TG. Comparison of gene expression between mandibular and iliac bone-derived cells. Clin Oral Investig 2014; 19:1223-33. [PMID: 25366872 DOI: 10.1007/s00784-014-1353-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 10/28/2014] [Indexed: 01/31/2023]
Abstract
OBJECTIVES The purpose of this study is to investigate the differences in gene expression between the human mandibular and iliac bone-derived cells (BCs) for better understanding of the site-specific characteristics of bones. METHODS Primary cells were obtained from mandibular and iliac bones from six healthy, elderly donors. To investigate site-specific differences, gene expression profile of mandibular and iliac BC from the same donors were compared via cDNA microarray analysis. RESULTS A comparison of the gene expression profiles revealed that 82 genes were significantly upregulated and 66 genes were downregulated with 1.5 fold or greater in mandibular versus iliac BCs. The most significantly differentially regulated genes were associated with skeletal system development or morphogenesis (SIX1, MSX1, MSX2, HAND2, PRRX1, OSR2, HOX gene family, PITX2). Especially, upregulated genes in mandibular BC were related with tooth morphogenesis, originated from the ectomesenchyme. Microarray analysis revealed that Msx1 was 2.03-fold and Msx2 was 1.99-fold upregulated in mandibular versus iliac BCs (both p < 0.01). Furthermore, in mandibular BCs, all members of the HOX gene family that were analyzed were downregulated (p < 0.01) and osteopontin was also downregulated by 2.84-fold (p < 0.01). CONCLUSIONS Site-specific differences between jaw and long bones can be explained by the differences in gene expression patterns. Our results suggest that bone cell-derived cells maintain the genetic characteristics of their embryological origin. CLINICAL RELEVANCE This study revealed fundamental differences in gene expression between the mandibular and iliac bone in humans. These differences could be important for understanding jaw bone-specific development of bisphosphonate-related osteonecrosis of the jaw.
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Affiliation(s)
- Jung-Tae Lee
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
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Palladino R, Lee JT, Millett C. Association between multimorbidity and healthcare utilisation and health outcomes among elderly people in Europe. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku151.118] [Citation(s) in RCA: 3] [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: 11/13/2022] Open
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Lee HJ, Kim HM, Kim N, Oh JC, Jo HJ, Lee JT, Chang HY, Chang NH, Ahn S, Lee JY. Association between halitosis diagnosed by a questionnaire and halimeter and symptoms of gastroesophageal reflux disease. J Neurogastroenterol Motil 2014; 20:483-90. [PMID: 25257469 PMCID: PMC4204417 DOI: 10.5056/jnm14052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 05/30/2014] [Accepted: 06/02/2014] [Indexed: 12/15/2022] Open
Abstract
Background/Aims The relationship between halitosis and gastroesophageal reflux disease (GERD) remains controversial. The aim of this study was to investigate an association between subjective and objective halitosis and GERD. Methods The subjects were enrolled from participants who visited a health promotion center at Seoul National University Bundang Hospital. For diagnosis of halitosis, a questionnaire was requested, and volatile sulfur compounds (VSCs) were measured by Halimeter. Self-conscious halitosis was defined as halitosis perceived by himself or herself. Informed halitosis was defined as halitosis perceived by others. Objective halitosis was defined when mean VSCs values were > 100 parts per billion. GERD was defined based on a questionnaire and endoscopy, including erosive esophagitis and non-erosive reflux disease (NERD). Results A total of 54 subjects (male:female = 33:21) with mean age of 46.0 ± 11.4 years were analyzed. The mean VSCs values were not significantly different between presence and absence of self-conscious halitosis (P = 0.322), but significantly different between presence and absence of informed halitosis (P = 0.021). Informed halitosis was associated with objective halitosis (P = 0.039). GERD, erosive esophagitis and NERD did not correlate with objective halitosis (P = 0.556, 0.206 and 0.902, respectively). In multivariable analysis, the relationship between objective halitosis and GERD symptoms including chest pain, heart burn, acid regurgitation, epigastric pain, hoarseness, globus sensation and coughing was not significant. Besides, GERD was not associated with self-conscious halitosis, informed halitosis and objective halitosis, respectively. Conclusions GERD might not be associated with self-conscious, informed halitosis and objective halitosis indicated by Halimeter results. Informed halitosis could be correlated with objective halitosis determined by the Halimeter.
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Affiliation(s)
- Hyo-Jung Lee
- Departments of Periodontology, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Korea
| | - Hee Man Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Gangwon-do, Korea
| | - Nayoung Kim
- Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Korea
| | - Jane C Oh
- Yonsei Plus Clinic, Seongnam, Gyeonggi-do, Korea
| | - Hyun Jin Jo
- Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Korea
| | - Jung-Tae Lee
- Departments of Periodontology, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Korea
| | - Hee-Yung Chang
- Department of Periodontology, School of Dentistry, Wonkwang University, Iksan, Jeollabuk-do, Korea
| | - Na-Hee Chang
- Department of Public Health, Graduate School of Chungang University, Seoul, Korea
| | - Soyeon Ahn
- Medical Research Collaborating Center, Seoul National University Bundang Hospital, Gyeonggi-do, Korea
| | - Jeong-Yun Lee
- Department of Oral Medicine and Oral Diagnosis, School of Dentistry, Seoul National University, Seoul, Korea
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Laverty AA, Palladino R, Lee JT, Millett C. PP72 Associations between active travel and weight and hypertension in six Lower and Middle Income Countries: a cross-sectional study. Br J Soc Med 2014. [DOI: 10.1136/jech-2014-204726.167] [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: 11/04/2022]
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Lejay A, Ohana M, Lee JT, Georg Y, Delay C, Lucereau B, Thaveau F, Gaertner S, Chakfé N. Popliteal artery entrapment syndrome. J Cardiovasc Surg (Torino) 2014; 55:225-237. [PMID: 24796917] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Intermittent claudication is frequently encountered in vascular surgical practice in atherosclerotic patients. However, it may also be observed in a younger subset of patients without any cardiovascular risk factors and can represent a challenging diagnosis. Popliteal artery entrapment syndrome is rare but can cause intermittent claudication in young people. There is a lack of consensus about optimal strategies or diagnosis and management, particularly for variants such as functional popliteal entrapment. Since the first description in 1959, knowledge of the pathology and the underlying anatomic abnormalities was advanced through sporadic publications of case reports and small case series, but popliteal artery entrapment syndrome still remains a rare anatomic abnormality. It can be difficult to differentiate from other causes of lower limb pain in young patients, and diagnosis can be challenging. We propose to review clinical symptomatology, classification, radiological diagnosis and treatment of popliteal entrapment syndrome.
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Affiliation(s)
- A Lejay
- Department of Vascular Surgery and Kidney Transplantation University Hospital of Strasbourg, Strasbourg, France -
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Varu VN, Greenberg JI, Lee JT. Improved efficiency and safety for EVAR with utilization of a hybrid room. Eur J Vasc Endovasc Surg 2013; 46:675-9. [PMID: 24161724 DOI: 10.1016/j.ejvs.2013.09.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 05/24/2013] [Accepted: 09/22/2013] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Access to a hybrid endovascular suite is touted as a necessity for advanced endovascular aneurysm repair (EVAR) to improve imaging accuracy and safety. Yet there remain little data documenting this intuitive advantage of a hybrid setup versus a traditional operating room (OR) utilizing a portable fluoroscopic unit (C-arm) for imaging. We hypothesized that standard elective EVAR performed in a hybrid suite would improve procedural efficiency and accuracy, as well minimize patient exposure to both contrast and radiation. METHODS We retrospectively reviewed a single attending surgeon's EVAR practice, which encompassed the transition to a hybrid endovascular suite (opened July 2010). Only consecutive abdominal aneurysms were included in the analysis to attempt to create a homogenous cohort. All emergent, aorto-uni-iliac (AUI), snorkel, fenestrated, or hybrid procedures were excluded. Standard variables evaluated and compared between the two study subgroups included fluoroscopy time, operative time, contrast use, stent-graft component utilization, complication rates, and short-term endoleaks. RESULTS From January 2008 to August 2012, we performed 213 EVAR procedures for abdominal aortic aneurysms. After excluding emergent, AUI, snorkel, or hybrid procedures, we analyzed 109 routine EVARs. Fifty-eight consecutive cases were done in the OR with a C-arm until July 2010, and the last 51 cases were done in the hybrid room. Both groups were well matched in terms of demographics, aneurysm morphology, and procedural characteristics. No difference was found in terms of complication rates or operative mortality, although there was a trend towards decreased fluoroscopy time, type I/III endoleaks, and a number of additional endograft components utilized. Compared with patients repaired in the OR/C-arm, EVAR done in the hybrid room resulted in less total OR time and contrast usage (p < .05). CONCLUSIONS Routine EVAR performed in a hybrid fixed-imaging suite affords greater efficiency and less harmful exposure of contrast and possible radiation to the patient. Accurate imaging quality and deployment is associated with less need for additional endograft components, which should lead to improved cost efficiency. Confirmation of these findings might be necessary in a randomized control trial to fully justify the capital expenditure necessary for hybrid endovascular suites.
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Affiliation(s)
- V N Varu
- Division of Vascular Surgery, Stanford University Medical Center, Stanford, CA, USA
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Lee JT, Jung JW, Choi JY, Kwon TG. Enhanced bone morphogenic protein adenoviral gene delivery to bone marrow stromal cells using magnetic nanoparticle. J Korean Assoc Oral Maxillofac Surg 2013; 39:112-9. [PMID: 24471028 PMCID: PMC3858166 DOI: 10.5125/jkaoms.2013.39.3.112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/08/2013] [Accepted: 05/10/2013] [Indexed: 12/04/2022] Open
Abstract
Objectives This study investigated the question of whether adenoviral magnetofection can be a suitable method for increasing the efficacy of gene delivery into bone marrow stromal cell (BMSC) and for generation of a high level of bone morphogenic protein (BMP) secretion at a minimized viral titer. Materials and Methods Primary BMSCs were isolated from C57BL6 mice and transduced with adenoviral vectors encoding β galactosidase or BMP2 and BMP7. The level of BMP secretion, activity of osteoblast differentiation, and cell viability of magnetofection were measured and compared with those of the control group. Results The expression level of β galactosidase showed that the cell transduction efficiency of AdLacZ increased according to the increased amount of magnetic nanoparticles. No change in cell viability was observed after magnetofection with 2 µL of magnetic nanoparticle. Secretion of BMP2 or BMP7 was accelerated after transduction of AdBMP2 and 7 with magnetofection. AdBMP2 adenoviral magnetofection resulted in up to 7.2-fold higher secretion of BMP2, compared with conventional AdBMP2-transduced BMSCs. Magnetofection also induced a dramatic increase in secretion of BMP7 by up to 10-fold compared to the control. Use of only 1 multiplicity of infection (moi) of magnetofection with adenoviral transduction of AdBMP2 or AdBMP7 resulted in significantly higher transgene expression compared to 20 moi of conventional adenoviral transduction. Conclusion Magnetic particle-mediated gene transudation is a highly efficient method of gene delivery to BMSCs. Magnetofection can lower the amount of viral particles while improving the efficacy of gene delivery.
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Affiliation(s)
- Jung-Tae Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jae-Whan Jung
- Department of Biochemistry, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jae-Yong Choi
- Department of Biochemistry, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae-Geon Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
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Lee JT, Jeong JH, Choi JY, Kwon TG. Corrigendum: Enhanced bone morphogenic protein adenoviral gene delivery to bone marrow stromal cells using magnetic nanoparticle. J Korean Assoc Oral Maxillofac Surg 2013. [PMCID: PMC3858127 DOI: 10.5125/jkaoms.2013.39.4.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Jung-Tae Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jae-Hwan Jeong
- Department of Biochemistry & Cell Biology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Je-Yong Choi
- Department of Biochemistry & Cell Biology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Tae-Geon Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
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