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Mitchell KE, Wenner BA, Lee C, Park T, Socha MT, Kleinschmit DH, Firkins JL. Supplementing branched-chain volatile fatty acids in dual-flow cultures varying in dietary forage and corn oil concentrations. I: Digestibility, microbial protein, and prokaryotic community structure. J Dairy Sci 2023; 106:7530-7547. [PMID: 37532627 DOI: 10.3168/jds.2022-23165] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 03/17/2023] [Indexed: 08/04/2023]
Abstract
Branched-chain amino acids are deaminated by amylolytic bacteria to branched-chain volatile fatty acids (BCVFA), which are growth factors for cellulolytic bacteria. Our objective was to determine the dietary conditions that would increase the uptake of BCVFA by rumen bacteria. We hypothesized that increased forage would increase cellulolytic bacterial abundance and incorporation of BCVFA into their structure. Supplemental polyunsaturated fatty acids, supplied via corn oil (CO), should inhibit cellulolytic bacteria growth, but we hypothesized that additional BCVFA would alleviate that inhibition. Further, supplemental BCVFA should increase neutral detergent fiber degradation and efficiency of bacterial protein synthesis more with the high forage and low polyunsaturated fatty acid dietary combination. The study was an incomplete block design with 8 dual-flow continuous cultures used in 4 periods with 8 treatments (n = 4 per treatment) arranged as a 2 × 2 × 2 factorial. The factors were: high forage (HF) or low forage (LF; 67 or 33%), without or with supplemental CO (3% dry matter), and without or with 2.15 mmol/d (which included 5 mg/d of 13C each of BCVFA isovalerate, isobutyrate, and 2-methylbutyrate). The isonitrogenous diets consisted of 33:67 alfalfa:orchardgrass pellet, and was replaced with a concentrate pellet that mainly consisted of ground corn, soybean meal, and soybean hulls for the LF diet. The main effect of supplementing BCVFA increased neutral detergent fiber (NDF) degradability by 7.6%, and CO increased NDF degradability only in LF diets. Supplemental BCVFA increased bacterial N by 1.5 g/kg organic matter truly degraded (6.6%) and 0.05 g/g truly degraded N (6.5%). The relative sequence abundance decreased with LF for Fibrobacter succinogenes, Ruminococcus flavefaciens, and genus Butyrivibrio compared with HF. Recovery of the total 13C dose in bacterial pellets decreased from 144 µg/ mg with HF to 98.9 µg/ mg with LF. Although isotope recovery in bacteria was greater with HF, BCVFA supplementation increased NDF degradability and efficiency of microbial protein synthesis under all dietary conditions. Therefore, supplemental BCVFA has potential to improve feed efficiency in dairy cows even with dietary conditions that might otherwise inhibit cellulolytic bacteria.
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Affiliation(s)
| | - B A Wenner
- Elanco Animal Health, Greenfield, IN 46140
| | - C Lee
- Department of Animal Sciences, The Ohio State University, Wooster, OH 44691
| | - T Park
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-do, Korea 17546
| | - M T Socha
- Zinpro Corporation, Eden Prairie, MN 55344
| | | | - J L Firkins
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43035
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Walker R, Fothergill-Misbah N, Kariuki S, Ojo O, Cilia R, Dekker MCJ, Agabi O, Akpalu A, Amod F, Breckons M, Cham M, Del Din S, Dotchin C, Guggsa S, Kwasa J, Mushi D, Nwaokorie FO, Park T, Rochester L, Rogathi J, Sarfo FS, Shalash A, Ternent L, Urasa S, Okubadejo N. Transforming Parkinson's Care in Africa (TraPCAf): protocol for a multimethodology National Institute for Health and Care Research Global Health Research Group project. BMC Neurol 2023; 23:373. [PMID: 37858118 PMCID: PMC10585779 DOI: 10.1186/s12883-023-03414-0] [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: 06/13/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is the second most common neurodegenerative disorder and, according to the Global Burden of Disease estimates in 2015, was the fastest growing neurological disorder globally with respect to associated prevalence, disability, and deaths. Information regarding the awareness, diagnosis, phenotypic characteristics, epidemiology, prevalence, risk factors, treatment, economic impact and lived experiences of people with PD from the African perspective is relatively sparse in contrast to the developed world, and much remains to be learned from, and about, the continent. METHODS Transforming Parkinson's Care in Africa (TraPCAf) is a multi-faceted, mixed-methods, multi-national research grant. The study design includes multiple sub-studies, combining observational (qualitative and quantitative) approaches for the epidemiological, clinical, risk factor and lived experience components, as appropriate, and interventional methods (clinical trial component). The aim of TraPCAf is to describe and gain a better understanding of the current situation of PD in Africa. The countries included in this National Institute for Health and Care Research (NIHR) Global Health Research Group (Egypt, Ethiopia, Ghana, Kenya, Nigeria, South Africa and Tanzania) represent diverse African geographies and genetic profiles, with differing resources, healthcare systems, health and social protection schemes, and policies. The research team is composed of experts in the field with vast experience in PD, jointly led by a UK-based and Africa-based investigator. DISCUSSION Despite the increasing prevalence of PD globally, robust data on the disease from Africa are lacking. Existing data point towards the poor awareness of PD and other neurological disorders on the continent and subsequent challenges with stigma, and limited access to affordable services and medication. This multi-site study will be the first of its kind in Africa. The data collected across the proposed sub-studies will provide novel and conclusive insights into the situation of PD. The selected country sites will allow for useful comparisons and make results relevant to other low- and middle-income countries. This grant is timely, as global recognition of PD and the public health challenge it poses builds. The work will contribute to broader initiatives, including the World Health Organization's Intersectoral global action plan on epilepsy and other neurological disorders. TRIAL REGISTRATION https://doi.org/10.1186/ISRCTN77014546 .
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Affiliation(s)
- R Walker
- Northumbria Healthcare NHS Foundation Trust, Newcastle upon Tyne, UK
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - N Fothergill-Misbah
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK.
| | - S Kariuki
- Neuroscience Unit, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - O Ojo
- College of Medicine, University of Lagos, Lagos, Nigeria
- Lagos University Teaching Hospital, Lagos, Nigeria
| | - R Cilia
- Parkinson and Movement Disorders Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - M C J Dekker
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - O Agabi
- College of Medicine, University of Lagos, Lagos, Nigeria
| | - A Akpalu
- University of Ghana Medical School, Korle Bu Teaching Hospital, Accra, Ghana
| | - F Amod
- University of KwaZulu-Natal, Durban, South Africa
| | - M Breckons
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - M Cham
- Richard Novati Catholic Hospital, Sogakope, Ghana
| | - S Del Din
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- National Institute for Health and Care Research (NIHR) Newcastle Biomedical Research Centre (BRC), Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - C Dotchin
- Northumbria Healthcare NHS Foundation Trust, Newcastle upon Tyne, UK
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - S Guggsa
- Addis Ababa University, Addis Ababa, Ethiopia
| | - J Kwasa
- Department of Clinical Medicine and Therapeutics, University of Nairobi, Nairobi, Kenya
| | - D Mushi
- Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - F O Nwaokorie
- Department of Medical Laboratory Science, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Nigeria
| | - T Park
- Parkinson's Africa, Kingston upon Thames, UK
| | - L Rochester
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- National Institute for Health and Care Research (NIHR) Newcastle Biomedical Research Centre (BRC), Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - J Rogathi
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - F S Sarfo
- Kwame Nkrumah University of Science & Technology, Kumasi, Ghana
| | - A Shalash
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - L Ternent
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - S Urasa
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - N Okubadejo
- College of Medicine, University of Lagos, Lagos, Nigeria
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McCann UG, Park T. Rhabdomyolysis in McArdle disease caused by scuba diving. BMJ Case Rep 2023; 16:e255192. [PMID: 37852664 PMCID: PMC10603480 DOI: 10.1136/bcr-2023-255192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023] Open
Abstract
McArdle disease is a glycogen storage disease that results in rhabdomyolysis during intense exercise. A number of different triggers have been described. We evaluated a patient with McArdle disease who presented with rhabdomyolysis after recreational scuba diving. There was no concern for barotrauma or decompression sickness. His symptoms resolved with standard-of-care management for non-diving-related rhabdomyolysis. Features of his experience provoked questions about the diving-related factors contributing to his presentation. We present the case and explore possible mechanisms of diving-related injury in patients with McArdle disease, including the possible effects of hyperoxia, hyperbaria, hypothermia and strenuous activity.
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Affiliation(s)
- Ulysse George McCann
- Hospital Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Thomas Park
- Hospital Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
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Kim T, Park T, Kweon Y, Baek D, Lee J, Kang H. 530 Age-dependent sequential increase of senescent cells in the skin. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.545] [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: 11/21/2022]
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Wenner B, Park T, Mitchell K, Kvidera S, Griswold K, Horst E, Baumgard L. Effect of zinc source (zinc sulfate or zinc hydroxychloride) on relative abundance of fecal Treponema spp. in lactating dairy cows. JDS Communications 2022; 3:334-338. [PMID: 36340900 PMCID: PMC9623701 DOI: 10.3168/jdsc.2022-0238] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/23/2022] [Indexed: 11/29/2022]
Abstract
Cows (n = 24) were fed typical lactating diets that only differed in zinc source inclusion. Fecal samples collected from cows were extracted for prokaryotic 16S gene DNA. Feeding zinc hydroxychloride decreased the Treponema spp. recovered from fecal samples compared with cows fed zinc sulfate.
Previous research revealed a potential effect of dietary trace mineral source on both ruminal and fecal microbiota. However, the effect of Zn source, specifically, has not previously been considered. Based on reported postruminal solubility, we hypothesized that Zn hydroxychloride would decrease Treponema spp. fecal excretion relative to cows fed Zn sulfate. To test this hypothesis, lactating Holstein cows (n = 24; 685 ± 9 kg of body weight; 159 ± 8 d in milk; parity 3 ± 0.2) were randomly assigned to 1 of 2 dietary treatments: control (75 mg/kg Zn from ZnSO4) or Zn hydroxychloride (HYD; 75 mg/kg IntelliBond Z; Micronutrients USA LLC). Single fecal grab samples were collected on d 1 before dietary treatments and on d 27 after dietary treatments were applied. Fecal microbial DNA was extracted and sequenced to establish taxonomy using a universal primer for the 16S rRNA gene. Supplementation of HYD decreased the relative abundance of Treponema 2 by 3-fold (14.7% vs. 4.9%). Poor sequencing resolution at the species level limited inference of Treponema spp. toward management or gut health implications of HYD supplementation. However, the inclusion of pathogenic species among Treponema spp. indicates a potential implication of HYD feeding to reduce environmental exposure of the dairy cow to Treponema spp.
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Affiliation(s)
- B.A. Wenner
- Department of Animal Sciences, The Ohio State University, Columbus 43210
- Corresponding author
| | - T. Park
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-do, Korea
| | - K. Mitchell
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | | | | | - E.A. Horst
- Department of Animal Science, Iowa State University, Ames 50011
| | - L.H. Baumgard
- Department of Animal Science, Iowa State University, Ames 50011
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Han A, Park T, Kim H, Min S, Ha J, Min SK. Paclitaxel Coated Balloon Angioplasty vs. Plain Balloon Angioplasty for Haemodialysis Arteriovenous Access Stenosis: A Systematic Review and a Time to Event Meta-Analysis of Randomised Controlled Trials. J Vasc Surg 2021. [DOI: 10.1016/j.jvs.2021.09.005] [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: 12/01/2022]
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Abstract
Traumatic brain injury (TBI) is a major public health challenge that is also the third leading cause of death worldwide. It is also the leading cause of long-term disability in children and young adults worldwide. Despite a large body of research using predominantly in vivo and in vitro rodent models of brain injury, there is no medication that can reduce brain damage or promote brain repair mainly due to our lack of understanding in the mechanisms and pathophysiology of the TBI. The aim of this review is to examine in vitro TBI studies conducted from 2008-2018 to better understand the TBI in vitro model available in the literature. Specifically, our focus was to perform a detailed analysis of the in vitro experimental protocols used and their subsequent biological findings. Our review showed that the uniaxial stretch is the most frequently used way of load application, accounting for more than two-thirds of the studies reviewed. The rate and magnitude of the loading were varied significantly from study to study but can generally be categorized into mild, moderate, and severe injuries. The in vitro studies reviewed here examined key processes in TBI pathophysiology such as membrane disruptions leading to ionic dysregulation, inflammation, and the subsequent damages to the microtubules and axons, as well as cell death. Overall, the studies examined in this review contributed to the betterment of our understanding of TBI as a disease process. Yet, our review also revealed the areas where more work needs to be done such as: 1) diversification of load application methods that will include complex loading that mimics in vivo head impacts; 2) more widespread use of human brain cells, especially patient-matched human cells in the experimental set-up; and 3) need for building a more high-throughput system to be able to discover effective therapeutic targets for TBI.
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Affiliation(s)
- Yi-Han Wu
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
- Center for Brain Research, The University of Auckland, Auckland, New Zealand
| | - Samuel Rosset
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Tae-Rin Lee
- Advanced Institute of Convergence Technology, Seoul National University, Seoul, Korea
| | - Mike Dragunow
- Center for Brain Research, The University of Auckland, Auckland, New Zealand
- Department of Pharmacology, The University of Auckland, Auckland, New Zealand
| | - Thomas Park
- Center for Brain Research, The University of Auckland, Auckland, New Zealand
- Department of Pharmacology, The University of Auckland, Auckland, New Zealand
| | - Vickie Shim
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
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Roman-Garcia Y, Mitchell KE, Lee C, Socha MT, Park T, Wenner BA, Firkins JL. Conditions stimulating neutral detergent fiber degradation by dosing branched-chain volatile fatty acids. III: Relation with solid passage rate and pH on prokaryotic fatty acid profile and community in continuous culture. J Dairy Sci 2021; 104:9868-9885. [PMID: 34253360 DOI: 10.3168/jds.2021-20336] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 06/02/2021] [Indexed: 01/03/2023]
Abstract
Our objectives were to evaluate potential interactions in culture conditions that influence how exogenously dosed branched-chain VFA (BCVFA) would be recovered as elongated fatty acids (FA) or would affect bacterial populations. A 2 × 2 × 2 factorial arrangement of treatments evaluated 3 factors: (1) without versus with BCVFA (0 vs. 2 mmol/d each of isobutyrate, isovalerate, and 2-methylbutyrate; each dose was partially substituted with 13C-enriched tracers before and during the collection period); (2) high versus low pH (ranging diurnally from 6.3 to 6.8 vs. 5.7 to 6.2); and (3) low versus high particulate-phase passage rate (kp; 2.5 vs. 5.0%/h) in continuous cultures administered a 50:50 forage:concentrate diet twice daily. Samples of effluent were collected and composited before harvesting bacteria from which FA and DNA were extracted. Profiles and enrichments of FA in bacteria were evaluated by gas chromatography and isotope-ratio mass spectrometry. The 13C enrichment in bacterial FA was calculated as percentage recovery of dosed 13C-labeled BCVFA. Dosing BCVFA increased the even-chain iso-FA, preventing the reduced concentration at higher kp and potentially as a physiological response to decreased pH. However, decreasing pH decreased recovery of 13C in these even-chain FA, suggesting greater reliance on isobutyrate produced from degradation of dietary valine. The iso-FA were decreased, whereas anteiso-FA and 16:0 increased with decreasing pH. Thus, 2-methylbutyrate still appeared to be important as a precursor for anteiso-FA to counter the increased rigidity of bacterial membranes that had more saturated straight-chain FA when pH decreased. Provision of BCVFA stimulated the relative sequence abundance of Fibrobacter and Treponema, both of which require isobutyrate and 2-methylbutyrate. Numerous bacterial community members were shifted by low pH, including increased Prevotella and genera within the phylum Proteobacteria, at the expense of members within phylum Firmicutes. Because of relatively few interactions with pH and kp, supplementation of BCVFA can stimulate neutral detergent fiber degradability via key fibrolytic bacteria across a range of conditions. Decreasing pH shifted bacterial populations and their FA composition, suggesting that further research is needed to distinguish pH from dietary changes.
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Affiliation(s)
- Y Roman-Garcia
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - K E Mitchell
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - C Lee
- Ohio Agricultural Research and Development Center, Wooster 44691
| | - M T Socha
- Zinpro Corporation, Eden Prairie, MN 55344
| | - T Park
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - B A Wenner
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - J L Firkins
- Department of Animal Sciences, The Ohio State University, Columbus 43210.
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Lim S, Kim J, Park JY, Min J, Yun S, Park T, Kim Y, Choi J. Suppressed Degradation and Enhanced Performance of CsPbI 3 Perovskite Quantum Dot Solar Cells via Engineering of Electron Transport Layers. ACS Appl Mater Interfaces 2021; 13:6119-6129. [PMID: 33499586 DOI: 10.1021/acsami.0c15484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
CsPbI3 perovskite quantum dots (CsPbI3-PQDs) have recently come into focus as a light-harvesting material that can act as a platform through which to combine the material advantages of both perovskites and QDs. However, the low cubic-phase stability of CsPbI3-PQDs in ambient conditions has been recognized as a factor that inhibits device stability. TiO2 nanoparticles are the most regularly used materials as an electron transport layer (ETL) in CsPbI3-PQD photovoltaics; however, we found that TiO2 can facilitate the cubic-phase degradation of CsPbI3-PQDs due to its vigorous photocatalytic activity. To address these issues, we have developed chloride-passivated SnO2 QDs (Cl@SnO2 QDs), which have low photocatalytic activity and few surface traps, to suppress the cubic-phase degradation of CsPbI3-PQDs. Given these advantages, the CsPbI3-PQD solar cells based on Cl@SnO2 ETLs show significantly improved device operational stability (under conditions of 50% relative humidity and 1-sun illumination), compared to those based on TiO2 ETLs. In addition, the Cl@SnO2-based devices showed improved open circuit voltage and photocurrent density, resulting in enhanced power conversion efficiency (PCE) up to 14.5% compared to that of TiO2-based control devices (PCE of 13.8%).
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Affiliation(s)
- S Lim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - J Kim
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - J Y Park
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - J Min
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - S Yun
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - T Park
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Y Kim
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - J Choi
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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Lee C, Copelin JE, Park T, Mitchell KE, Firkins JL, Socha MT, Luchini D. Effects of diet fermentability and supplementation of 2-hydroxy-4-(methylthio)-butanoic acid and isoacids on milk fat depression: 2. Ruminal fermentation, fatty acid, and bacterial community structure. J Dairy Sci 2020; 104:1604-1619. [PMID: 33358812 DOI: 10.3168/jds.2020-18950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 09/21/2020] [Indexed: 12/22/2022]
Abstract
The experiment was conducted to understand ruminal effects of diet modification during moderate milk fat depression (MFD) and ruminal effects of 2-hydroxy-4-(methylthio)-butanoic acid (HMTBa) and isoacids on alleviating MFD. Five ruminally cannulated cows were used in a 5 × 5 Latin square design with the following 5 dietary treatments (dry matter basis): a high-forage and low-starch control diet with 1.5% safflower oil (HF-C); a low-forage and high-starch control diet with 1.5% safflower oil (LF-C); the LF-C diet supplemented with HMTBa (0.11%; 28 g/d; LF-HMTBa); the LF-C diet supplemented with isoacids [(IA) 0.24%; 60 g/d; LF-IA]; and the LF-C diet supplemented with HMTBa and IA (LF-COMB). The experiment consisted of 5 periods with 21 d per period (14-d diet adaptation and 7-d sampling). Ruminal samples were collected to determine fermentation characteristics (0, 1, 3, and 6 h after feeding), long-chain fatty acid (FA) profile (6 h after feeding), and bacterial community structure by analyzing 16S gene amplicon sequences (3 h after feeding). Data were analyzed using the MIXED procedure of SAS (SAS Institute Inc., Cary, NC) in a Latin square design. Preplanned comparisons between HF-C and LF-C were conducted, and the main effects of HMTBa and IA and their interaction within the LF diets were examined. The LF-C diet decreased ruminal pH and the ratio of acetate to propionate, with no major changes detected in ruminal FA profile compared with HF-C. The α-diversity for LF-C was lower compared with HF-C, and β-diversity also differed between LF-C and HF-C. The relative abundance of bacterial phyla and genera associated indirectly with fiber degradation was influenced by LF-C versus HF-C. As the main effect of HMTBa within the LF diets, HMTBa increased the ratio of acetate to propionate and butyrate molar proportion. Ruminal saturated FA were increased and unsaturated FA concentration were decreased by HMTBa, with minimal changes detected in ruminal bacterial diversity and community. As the main effect of IA, IA supplementation increased ruminal concentration of all branched-chain volatile FA and valerate and increased the percentage of trans-10 C18 isomers in total FA. In addition, α-diversity and the number of functional features were increased for IA. Changes in the abundances of bacterial phyla and genera were minimal for IA. Interactions between HMTBa and IA were observed for ruminal variables and some bacterial taxa abundances. In conclusion, increasing diet fermentability (LF-C vs. HF-C) influenced rumen fermentation and bacterial community structure without major changes in FA profile. Supplementation of HMTBa increased biohydrogenation capacity, and supplemental IA increased bacterial diversity, possibly alleviating MFD. The combination of HMTBa and IA had no associative effects in the rumen and need further studies to understand the interactive mechanism.
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Affiliation(s)
- C Lee
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691.
| | - J E Copelin
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691
| | - T Park
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - K E Mitchell
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - J L Firkins
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - M T Socha
- Zinpro Corporation, Eden Prairie, MN 55344
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Beverstock J, Park T, Alston RP, Song CCA, Claxton A, Sharkey T, Hutton S, Fathers J, Cawley W. A Comparison of Volatile Anesthesia and Total Intravenous Anesthesia (TIVA) Effects on Outcome From Cardiac Surgery: A Systematic Review and Meta-Analysis. J Cardiothorac Vasc Anesth 2020; 35:1096-1105. [PMID: 33191042 DOI: 10.1053/j.jvca.2020.10.036] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 01/28/2023]
Abstract
OBJECTIVE The primary objective of this study was to compare one-year mortality in patients undergoing cardiac surgery with volatile anesthesia or total intravenous anesthesia (TIVA). Secondary objectives were to compare in-hospital and 30-day mortality, postoperative levels of creatine kinase (CK-MB) and cardiac troponin, and durations of tracheal intubation, intensive care unit (ICU) and hospital stays. DESIGN Systematic review and meta-analysis of randomized controlled trials (RCTs). SETTING International, multi-institution centers. PARTICIPANTS Adults patients undergoing heart surgery. INTERVENTIONS Volatile anesthesia and TIVA. MEASUREMENTS AND MAIN RESULTS Meta-analysis found no statistically significant difference between patients receiving TIVA and volatile anesthesia in one-year mortality (n = 6440, OR = 1.22, 95% CI 0.97 to 1.54, p = 0.09, Z = 1.67, I2 = 0%), troponin (n = 3127, SMD = 0.26, 95% CI -0.01 to 0.52, p = 0.05, Z = 1.92, I2 = 90%) and CK-MB concentration 24h postoperatively (n = 1214, SMD = 0.10, 95% CI -0.17 to 0.36, unadjusted p = 0.48, Z = 0.71, I2 = 79%), or time to tracheal extubation (n = 1059, SMD = 0.10, 95% CI -0.28 to 0.49, p = 0.60, Z = 0.53, I2 = 88%). The durations of ICU stay (n = 2003, SMD = 0.29, 95% CI 0.01 to 0.57, p = 0.04, Z = 2.05, I2 = 88%) and hospital stay (n = 1214, SMD = 0.42, 95% CI 0.10 to 0.75, p = 0.01, Z = 2.53, I2 = 91%) were shorter in the volatile anesthetic compared to TIVA group. CONCLUSIONS No significant differences in mortality (in-hospital, 30-day, 1-year), troponin and CK-MB concentrations 24 h postoperatively, or time to tracheal extubation were found between patients who had volatile anesthesia or TIVA. Compared to TIVA, volatile anesthesia was associated with shorter durations of hospital and ICU stays.
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Affiliation(s)
- Jamie Beverstock
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Thomas Park
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - R Peter Alston
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom; Department of Anaesthesia, Critical Care and Pain Medicine, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
| | - Celine Chan Ah Song
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Amy Claxton
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Thomas Sharkey
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Sarah Hutton
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Joseph Fathers
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Will Cawley
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
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Beverstock J, Park T, Song CCA, Alston R, Claxton A, Sharkey T, Hutton S, Fathers J, Cawley W. A comparison of volatile anaesthesia and total intravenous anaesthesia (tiva) on outcome from cardiac surgery: a systematic review and meta-analysis. J Cardiothorac Vasc Anesth 2020. [DOI: 10.1053/j.jvca.2020.09.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Joung K, Park T, Kim E, Song J, Lee E, Suh D, Spiteri C, Suh D. PCN1 IMPACT of PD-1/PD-L1 Inhibitors on Health Outcomes for Patients with Cancer in South Korea. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Min K, Park T. 199 Attitude of Women Nurses for Embarrassing Female Sexual and Urinary Symptoms in Korea. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2019.11.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Yang Y, Dodbele S, Park T, Glass R, Bhat K, Sulman EP, Zhang Y, Abounader R. MicroRNA-29a inhibits glioblastoma stem cells and tumor growth by regulating the PDGF pathway. J Neurooncol 2019; 145:23-34. [PMID: 31482267 PMCID: PMC10880555 DOI: 10.1007/s11060-019-03275-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/24/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND PURPOSE microRNAs are small noncoding RNAs that play important roles in cancer regulation. In this study, we investigated the expression, functional effects and mechanisms of action of microRNA-29a (miR-29a) in glioblastoma (GBM). METHODS miR-29a expression levels in GBM cells, stem cells (GSCs) and human tumors as well as normal astrocytes and normal brain were measured by quantitative PCR. miR-29a targets were uncovered by target prediction algorithms, and verified by immunoblotting and 3' UTR reporter assays. The effects of miR-29a on cell proliferation, death, migration and invasion were assessed with cell counting, Annexin V-PE/7AAD flow cytometry, scratch assay and transwell assay, respectively. Orthotopic xenografts were used to determine the effects of miR-29a on tumor growth. RESULTS Mir-29a was downregulated in human GBM specimens, GSCs and GBM cell lines. Exogenous expression of miR-29a inhibited GSC and GBM cell growth and induced apoptosis. miR-29a also inhibited GBM cell migration and invasion. PDGFC and PDGFA were uncovered and validated as direct targets of miR-29a in GBM. miR-29a downregulated PDGFC and PDGFA expressions at the transcriptional and translational levels. PDGFC and PDGFA expressions in GBM tumors, GSCs, and GBM established cell lines were higher than in normal brain and human astrocytes. Mir-29a expression inhibited orthotopic GBM xenograft growth. CONCLUSIONS miR-29a is a tumor suppressor miRNA in GBM, where it inhibits cancer stem cells and tumor growth by regulating the PDGF pathway.
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Affiliation(s)
- Yanzhi Yang
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, PO Box 800168, Charlottesville, VA, 22908, USA
| | - Samantha Dodbele
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, PO Box 800168, Charlottesville, VA, 22908, USA
| | - Thomas Park
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, PO Box 800168, Charlottesville, VA, 22908, USA
| | - Rainer Glass
- Neurosurgical Research, University Clinics Munich, Munich, Germany
| | - Krishna Bhat
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Langone School of Medicine, New York, USA
| | - Ying Zhang
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, PO Box 800168, Charlottesville, VA, 22908, USA.
| | - Roger Abounader
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, PO Box 800168, Charlottesville, VA, 22908, USA.
- Department of Neurology, University of Virginia, Charlottesville, VA, USA.
- Cancer Center, University of Virginia, Charlottesville, VA, USA.
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16
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Woolf Z, Swanson M, Park T, Brooks A, Dragunow M. P10.02 Differentiating microglia and tumour associated macrophages in high grade glioma. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.142] [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
Glioblastoma multiforme (GBM) is the most common primary brain tumour that affects adults. This aggressive tumour is invariably fatal, carrying a rapid progression and a dismal median survival period of only 15 months despite multimodal treatment approaches. Central to GBM pathogenesis is the immunosuppressive profile of these tumours. The two cell types that are highly abundant in these tumours and play critical roles in the immunosuppressive niche are the brain’s resident microglia and their peripheral counterparts - tumour associated macrophages (TAMs). Despite microglia and TAMs being ontogenetically distinct, these cells have largely been grouped together in research owing to the previous lack of cell-specific markers. Recent evidence has suggested that although TAMs may hold a predominantly pro-tumoral role, microglia may adopt a more anti-tumoral phenotype. Therefore, the differentiation of these two cell types is critical in elucidating the potentially characteristic roles of these two cell types in GBM pathogenesis.
MATERIAL AND METHODS
Tissue sections from resected low- and high-grade glioma tumours, along with epilepsy tissue (control), were used for immunohistochemistry (IHC) staining of macrophage pan-makers (Iba1, CD45, PU.1) and microglial-specific markers (TMEM119, P2RY12). Marker co-localisation was then used to differentiate microglia from TAMs. We further investigated a wider subset of cell-specific markers using multicolour flow cytometry and immunocytochemical staining of isolated cells from patient tissue samples.
RESULTS
Immunofluorescent staining of glioma and epilepsy tissue revealed two clear populations of cells; one population displayed long processes and co-labelling for both pan- and microglial-specific markers, whilst the other population displayed an amoeboid phenotype with only pan-maker staining. Preliminary analysis comparing microglia/TAM populations in low-grade, high-grade and epilepsy tissue suggests a clear difference in the proportions of these cells.
CONCLUSION
Our work complements RNA-Seq studies, showing that TMEM119 and P2RY12, alongside other markers, can indeed identify two distinct myeloid cell populations within glioma tissue. This provides a strong basis for further study where we aim to elucidate the respective roles of microglia and TAMs within tumours. Ultimately, this may hold the potential for differential targeting of these cells using immunotherapies.
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Affiliation(s)
- Z Woolf
- The University of Auckland, Auckland, New Zealand
| | - M Swanson
- The University of Auckland, Auckland, New Zealand
| | - T Park
- The University of Auckland, Auckland, New Zealand
| | - A Brooks
- The University of Auckland, Auckland, New Zealand
| | - M Dragunow
- The University of Auckland, Auckland, New Zealand
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17
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Jung W, Park T, Kim Y, Park H, Han Y, He J, Wolfgang CL, Blair A, Rashid MF, Kluger MD, Su GH, Chabot JA, Yang CY, Lou W, Valente R, Del Chiaro M, Shyr YM, Wang SE, van Huijgevoort NCM, Besselink MG, Yang Y, Kim H, Kwon W, Kim SW, Jang JY. Validation of a nomogram to predict the risk of cancer in patients with intraductal papillary mucinous neoplasm and main duct dilatation of 10 mm or less. Br J Surg 2019; 106:1829-1836. [PMID: 31441048 DOI: 10.1002/bjs.11293] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 05/17/2019] [Accepted: 06/04/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Intraductal papillary mucinous neoplasm (IPMN) is premalignant pancreatic lesion. International guidelines offer limited predictors of individual risk. A nomogram to predict individual IPMN malignancy risk was released, with good diagnostic performance based on a large cohort of Asian patients with IPMN. The present study validated a nomogram to predict malignancy risk and invasiveness of IPMN using both Eastern and Western cohorts. METHODS Clinicopathological and radiological data from patients who underwent pancreatic resection for IPMN at four centres each in Eastern and Western countries were collected. After excluding patients with missing data for at least one malignancy predictor in the nomogram (main pancreatic duct diameter, cyst size, presence of mural nodule, serum carcinoembryonic antigen and carbohydrate antigen (CA) 19-9 levels, and age). RESULTS In total, data from 393 patients who fit the criteria were analysed, of whom 265 were from Eastern and 128 from Western institutions. Although mean age, sex, log value of serum CA19-9 level, tumour location, main duct diameter, cyst size and presence of mural nodule differed between the Korean/Japanese, Eastern and Western cohorts, rates of malignancy and invasive cancer did not differ significantly. Areas under the receiver operating characteristic (ROC) curve values for the nomogram predicting malignancy were 0·745 for Eastern, 0·856 for Western and 0·776 for combined cohorts; respective values for the nomogram predicting invasiveness were 0·736, 0·891 and 0·788. CONCLUSIONS External validation of the nomogram showed good performance in predicting cancer in both Eastern and Western patients with IPMN lesions.
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Affiliation(s)
- W Jung
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Ajou University School of Medicine, Suwon, Korea
| | - T Park
- Department of Statistics, Seoul National University College of Natural Sciences, Seoul, Korea
| | - Y Kim
- Department of Statistics, Seoul National University College of Natural Sciences, Seoul, Korea
| | - H Park
- Department of Statistics, Seoul National University College of Natural Sciences, Seoul, Korea
| | - Y Han
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J He
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - C L Wolfgang
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - A Blair
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - M F Rashid
- Department of Surgery, Division of Gastrointestinal and Endocrine Surgery, Columbia University, College of Physicians and Surgeon, New York, USA
| | - M D Kluger
- Department of Surgery, Division of Gastrointestinal and Endocrine Surgery, Columbia University, College of Physicians and Surgeon, New York, USA
| | - G H Su
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, USA
| | - J A Chabot
- Department of Surgery, Division of Gastrointestinal and Endocrine Surgery, Columbia University, College of Physicians and Surgeon, New York, USA
| | - C-Y Yang
- Division of General Surgery, Department of Surgery, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - W Lou
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - R Valente
- Pancreatic Surgery Unit, Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute at Centre for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden.,Digestive and Liver Disease Unit, Sapienza University of Rome, Rome, Italy
| | - M Del Chiaro
- Pancreatic Surgery Unit, Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute at Centre for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Y-M Shyr
- Departments of Surgery, Taipei Veterans General Hospital and National Yang Ming University, Taipei, Taiwan
| | - S-E Wang
- Departments of Surgery, Taipei Veterans General Hospital and National Yang Ming University, Taipei, Taiwan
| | - N C M van Huijgevoort
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism, Academic Medical Centre, Amsterdam, the Netherlands
| | - M G Besselink
- Department of Surgery, Cancer Centre Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Y Yang
- Department of General Surgery, Peking University First Hospital, Beijing, China
| | - H Kim
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - W Kwon
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S-W Kim
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-Y Jang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
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Park T, Yang C, Yu Z. Specific inhibitors of lysozyme and peptidases inhibit the growth of the rumen protozoan
Entodinium caudatum
without decreasing feed digestion or fermentation
in vitro. J Appl Microbiol 2019; 127:670-682. [DOI: 10.1111/jam.14341] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/27/2019] [Accepted: 05/30/2019] [Indexed: 12/01/2022]
Affiliation(s)
- T. Park
- Department of Animal Sciences The Ohio State University Columbus OH USA
| | - C. Yang
- Department of Animal Sciences The Ohio State University Columbus OH USA
| | - Z. Yu
- Department of Animal Sciences The Ohio State University Columbus OH USA
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19
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Ang SBL, Hing WC, Tun SY, Park T. Experience with the Use of the Codonics Safe Label System™to Improve Labelling Compliance of Anaesthesia Drugs. Anaesth Intensive Care 2019; 42:500-6. [DOI: 10.1177/0310057x1404200412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. B. L. Ang
- Anaesthesia Department, National University Hospital Singapore, Singapore
| | - W. C. Hing
- Anaesthesia Department, National University Hospital Singapore, Singapore
- National University Health Systems Singapore, Singapore
| | - S. Y. Tun
- Anaesthesia Department, National University Hospital Singapore, Singapore
| | - T. Park
- Anaesthesia Department, National University Hospital Singapore, Singapore
- Department of Industrial & Information Systems Engineering, Soongsil University, Seoul, South Korea
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20
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Macapagal J, Park T, Joret M, Rustenhoven J, Dieriks B, Faull R, Schweder P, Dragunow M. TMIC-21. THE POTENTIAL CONTRIBUTION OF PERICYTES TO GLIOBLASTOMA MULTIFORME TUMOUR MICRO-ENVIRONMENT IMMUNOSUPPRESSION VIA DAMPENED EXPRESSION OF ICAM-1, VCAM-1 AND MCP-1. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy148.1080] [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: 11/12/2022] Open
Affiliation(s)
- Jena Macapagal
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Thomas Park
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Maximillian Joret
- School of Medicine, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Justin Rustenhoven
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Birger Dieriks
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Richard Faull
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Patrick Schweder
- Department of Neurosurgery, Auckland City Hospital, Auckland, New Zeal
| | - Mike Dragunow
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
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21
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Park T, Kim B, Macapagal J, Dieriks B, Schweder P, Heppner P, Turner C, Curtis M, Dragunow M. ANGI-03. PSA-NCAM IN GLIOBLASTOMA – A NEGATIVE PROGNOSTIC MARKER AND A THERAPEUTIC TARGET? Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy148.105] [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)
- Thomas Park
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Bernard Kim
- The University of Auckland, Auckland, New Zeal
| | - Jena Macapagal
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Birger Dieriks
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
| | - Patrick Schweder
- Auckland City Hospital and The Centre for Brain Research, The University of Auckland, Auckland, New Zeal
| | | | | | - Maurice Curtis
- Department of Anatomy and Medical Imaging and The Centre for Brain Research, The University of Auckland, Auckland, New Zeal
| | - Mike Dragunow
- The Centre for Brain Research, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zeal
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22
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Szekely B, Bossuyt V, Li X, Wali V, Patwardhan G, Frederick C, Silber A, Park T, Harigopal M, Pelekanou V, Zhang M, Yan Q, Rimm D, Bianchini G, Hatzis C, Pusztai L. Immunological differences between primary and metastatic breast cancer. Ann Oncol 2018; 29:2232-2239. [DOI: 10.1093/annonc/mdy399] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Skaar D, Park T, Swiontkowski M, Kuntz K. Is Antibiotic Prophylaxis Cost-effective for Dental Patients Following Total Knee Arthroplasty? JDR Clin Trans Res 2018; 4:9-18. [DOI: 10.1177/2380084418808724] [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: 11/17/2022] Open
Abstract
Introduction: Routine antibiotic prophylaxis (AP) to prevent prosthetic joint infection remains controversial. The lack of prophylaxis guideline consensus from the American Academy of Orthopaedic Surgeons (AAOS) and the American Dental Association (ADA) contributes to clinician confusion. Objectives: This cost-effectiveness decision model informs the AP debate and guideline development by comparing the benefits, harms, and costs of alternative prophylaxis strategies. Methods: A Markov state-transition model was developed comparing lifetime health outcomes and costs of alternative AP strategies for dental patients aged 65 y with a history of total knee arthroplasty (TKA). Based on our interpretation of AP recommendations from the AAOS and ADA, incremental cost-effectiveness ratios were calculated to compare the following strategies: no AP, AP for the first 2 y after a TKA, and lifetime AP. Results: The no-AP strategy had the lowest average lifetime costs ($17,119) and quality-adjusted life years (11.2151). Compared with a no-prophylaxis strategy, the 2-y AP strategy had incremental costs of $56 and 0.0006 QALYs gained and was cost-effective (incremental cost-effectiveness ratio = $95,100) when a willingness-to-pay threshold of $100,000 per quality-adjusted life year was used. Based on the results of 1-way sensitivity analysis, the no-AP strategy was cost-effective when we modestly increased base case amoxicillin adverse event estimates that were substantially lower than estimates reported in previous models. When plausible combinations of important model parameters were varied, model results suggested that there may be clinical scenarios when AP may be appropriate for some medically at-risk patient populations. Conclusion: The results of cost-effectiveness decision modeling generally support questioning routine AP for dental patients with TKA. Sensitivity analyses suggest that prophylaxis may be cost-effective for patient populations with a higher medical risk of infection. This finding is consistent with the recommendations of the 2015 ADA practice guideline and the appropriate use criteria jointly developed by the AAOS and the ADA. Knowledge Transfer Statement: The results of this decision modeling research support the contention that routine AP before invasive dental procedures to prevent prosthetic joint infection may not be cost-effective for patients without medical conditions, potentially conferring a higher infection risk. Model sensitivity analyses suggest that there may be clinical situations when medically at-risk patients benefit from AP.
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Affiliation(s)
- D.D. Skaar
- Division of Periodontology, Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - T. Park
- Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, Saint Louis, MO, USA
| | - M.F. Swiontkowski
- Department of Orthopaedic Surgery, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - K.M. Kuntz
- Division of Health Policy and Management, School of Public Health, University of Minnesota, Minneapolis, MN, USA
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Rashid A, Park T, Macneal K, Iannotti L, Ross W. Maternal Diet and Morbidity Factors Associated with Low Birth Weight in Haiti: A Case-Control Study. Health Equity 2018; 2:139-144. [PMID: 30283860 PMCID: PMC6071792 DOI: 10.1089/heq.2017.0063] [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] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Objective: A matched, case–control study was conducted to examine the association between development of low birth weight (LBW) and maternal factors, including dietary intake, comorbidities, and socioeconomic factors, among women in Cap Haitien, Haiti. Design: Mothers who delivered LBW babies; defined as ≤2.5 kg, were identified by review of the medical record and matched to mothers of similar age, parity, with normal birth weight (NBW) babies. A survey was administered consisting of Women's Dietary Diversity Score (WDDS), maternal reporting of comorbidities, income, and educational level. Subjects: Women were eligible if they delivered and had newborns weighed within the last 2 years. Total study participants consisted of 32 cases and 34 controls matched for age, parity, and month of delivery. Results: Mothers who consume eggs were 78% less likely to have given birth to a LBW infant (OR 0.22 (95% CI: 0.05–0.87). Mothers with NBW babies had a nonsignificant trend towards higher WDDS. The prevalence of hypertension in mothers who were seen in the clinic at least once over the past 2 years was found to be 27%, and 78% of mothers were not aware of their diagnosis. Conclusion: Enhancing maternal nutrition during pregnancy has broad implications for reducing LBW, improving fetal health and reducing fetal predilection for chronic diseases in adulthood. Longitudinal prospective studies are needed to evaluate the selective benefit of eggs and other high-quality foods in protecting fetal growth. Efforts to improve knowledge and awareness of hypertension in Haiti should be undertaken.
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Affiliation(s)
- Abdirahim Rashid
- Barnes-Jewish Hospital, Washington University School of Medicine, St. Louis, Missouri
| | - Thomas Park
- Barnes-Jewish Hospital, Washington University School of Medicine, St. Louis, Missouri
| | - Kenneth Macneal
- University of Pennsylvania Health System, Philadelphia, Pennsylvania
| | - Lora Iannotti
- Brown School at Washington University in St. Louis, St. Louis, Missouri
| | - Will Ross
- Barnes-Jewish Hospital, Washington University School of Medicine, St. Louis, Missouri
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Park T. 451 Young Scholar Presentation: Towards a Better Understanding of the Metabolism, Physiology and Ecology of Rumen Protozoa: New Insights from Culturomics and Genomics. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.448] [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: 11/12/2022] Open
Affiliation(s)
- T Park
- The Ohio State University, Columbus, OH
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Schindler U, Seitz L, Ashok D, Piovesan D, Tan J, DiRenzo D, Yin F, Leleti M, Rosen B, Miles D, Jin L, Park T, Young S, Soriano F, Rieger A, Karakunnel J, Sharif E, Powers J, Walters M. AB928, a dual antagonist of the A 2a R and A 2b R adenosine receptors, leads to greater immune activation and reduced tumor growth when combined with chemotherapy. Eur J Cancer 2018. [DOI: 10.1016/j.ejca.2018.01.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Park T, Eyler AA, Tabak RG, Valko C, Brownson RC. Opportunities for Promoting Physical Activity in Rural Communities by Understanding the Interests and Values of Community Members. J Environ Public Health 2017; 2017:8608432. [PMID: 28932248 PMCID: PMC5591924 DOI: 10.1155/2017/8608432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/08/2017] [Accepted: 07/09/2017] [Indexed: 11/17/2022]
Abstract
PURPOSE Physical activity (PA) has well-established health benefits, but most Americans do not meet national guidelines. In southeastern Missouri, trails have been developed to increase rates of PA. Although this has had success, broad-scale interventions will be needed to improve rates further. In this study, we surveyed residents of southeastern Missouri to identify ways to improve rates of PA. METHODS We conducted a telephone survey in 2015 of adults (n = 524) from eight rural Missouri towns that had walking trails, regarding their activities and interests. FINDINGS Forty percent of respondents reported both walking and meeting PA recommendations, 29% reported walking but not meeting PA recommendations, and the remainder did not walk or did not answer. Respondents who used the trails were significantly more likely to meet PA recommendations (odds ratio = 2.7; 95% confidence interval = 1.7, 4.5). Certain values and interests that may encourage PA or draw people to trails were common. CONCLUSIONS The group that walked but did not meet PA recommendations would be the ideal group to target for intervention, which could focus on their reported values and interests (e.g., personal relationships, being outdoors). Use of walking trails was associated with meeting PA recommendations.
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Affiliation(s)
- Thomas Park
- Barnes-Jewish Hospital, Washington University School of Medicine, St. Louis, MO 63108, USA
| | - Amy A. Eyler
- Prevention Research Center in St. Louis, Brown School, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Rachel G. Tabak
- Prevention Research Center in St. Louis, Brown School, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Cheryl Valko
- Prevention Research Center in St. Louis, Brown School, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Ross C. Brownson
- Prevention Research Center in St. Louis, Brown School, Washington University in St. Louis, St. Louis, MO 63130, USA
- Division of Public Health Sciences and Alvin J. Siteman Cancer Center, Washington University School of Medicine, Washington University in St. Louis, St. Louis, MO, USA
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Affiliation(s)
- L. C. Birch
- Hull Zoölogical Laboratory; The University of Chicago
| | - Thomas Park
- Hull Zoölogical Laboratory; The University of Chicago
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Schindler U, Chen A, Leleti M, Sharif E, Miles D, Powers J, Tan J, Sexton H, Park T, Young S, Jaen J. Novel small-molecule inhibitors of ecto-nucleotidase CD73: Activation of human CD8+ T cells and effects on tumor growth and immune parameters in experimental tumor models. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32885-4] [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: 11/29/2022]
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Park T. 1488 Toxicity of antibiotics on rumen protozoan Entodinium caudatum and its associated microbes. J Anim Sci 2016. [DOI: 10.2527/jam2016-1488] [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: 11/13/2022] Open
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Prathiba G, Kim I, Shin S, Strychalska J, Klimczuk T, Park T. Tuning the ferromagnetic phase in the CDW compound SmNiC2 via chemical alloying. Sci Rep 2016; 6:26530. [PMID: 27221309 PMCID: PMC4879522 DOI: 10.1038/srep26530] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 05/04/2016] [Indexed: 11/09/2022] Open
Abstract
We report a study on tuning the charge density wave (CDW) ferromagnet SmNiC2 to a weakly coupled superconductor by substituting La for Sm. X-ray diffraction measurements show that the doped compounds obey Vegard's law, where La (Lu) alloying expands (shrinks) the lattice due to its larger (smaller) atomic size than Sm. In the series Sm1-xLaxNiC2, CDW transition (TCDW = 148 K) for SmNiC2 is gradually suppressed, while the ferromagnetic (FM) ordering temperature (TC) at 17 K slightly increases up to x = 0.3. For x > 0.3, TC starts to decrease and there is no signature that could be related with the CDW phase. Electrical resistivity, magnetic susceptibility and specific heat measurements point toward the possible presence of a FM quantum critical point (QCP) near x = 0.92, where the TC is extrapolated to zero temperature. Superconductivity in LaNiC2 (Tsc = 2.9 K) is completely suppressed with small amount of Sm inclusion near the proposed FM critical point, indicating a competition between the two ordered phases. The tunable lattice parameters via chemical substitution (La,Lu) and the ensuing change among the ordered phases of ferromagnetism, CDW and superconductivity underscores that SmNiC2 provides a rich avenue to study the rare example of a FM QCP, where the broken symmetries are intricately correlated.
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Affiliation(s)
- G Prathiba
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - I Kim
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - S Shin
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - J Strychalska
- Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
| | - T Klimczuk
- Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
| | - T Park
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
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Ryu S, Huh IS, Cho EY, Cho Y, Park T, Yoon S, Joo Y, Hong K. Association Study of 60 Candidate Genes with Antipsychotic-induced Weight Gain in Schizophrenia Patients. Pharmacopsychiatry 2016; 49:51-6. [DOI: 10.1055/s-0035-1569267] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- S. Ryu
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - I.-S. Huh
- Department of Statistics, Seoul National University, Seoul, Korea
| | - E.-Y. Cho
- Center for Clinical Research, Samsung Biomedical Research Institute, Seoul, Korea
| | - Y. Cho
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - T. Park
- Department of Statistics, Seoul National University, Seoul, Korea
| | - S. Yoon
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - Y. Joo
- Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - K. Hong
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
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Chung S, Park J, Choi M, Yang J, Park T, Kim M, Lee N, Moon S. Is mirtazapine really effective in the treatment of Korean elderly depressed patients with insomnia after previous antidepressant failure?: An open-label, multicenter study. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.1515] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Roberts K, Park T, Elder NC, Regan S, Theodore SN, Mitchell MJ, Johnson YN. Urban Health Project: A Sustainable and Successful Community Internship Program for Medical Students. J Health Care Poor Underserved 2015; 26:1407-17. [PMID: 26548688 DOI: 10.1353/hpu.2015.0117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Urban Health Project (UHP) is a mission and vision-driven summer internship at the University of Cincinnati College of Medicine that places first-year medical students at local community agencies that work with underserved populations. At the completion of their internship, students write Final Intern Reflections (FIRs). METHODS Final Intern Reflections written from 1987 to 2012 were read and coded to both predetermined categories derived from the UHP mission and vision statements and new categories created from the data themselves. RESULTS Comments relating to UHP's mission and vision were found in 47% and 36% of FIRs, respectively. Positive experiences outweighed negative by a factor of eight. Interns reported the following benefits: educational (53%), valuable (25%), rewarding (25%), new (10%), unique (6%), and life-changing (5%). CONCLUSIONS Urban Health Project is successful in providing medical students with enriching experiences with underserved populations that have the potential to change their understanding of vulnerable populations.
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Kim H, Park T, Lee J, Jeon J. Correlation between mandibular canal position and IAN encounter during mandibular SSRO using 3D CT analysis. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
BACKGROUND The mentally ill are vulnerable to human rights violations, particularly in Indonesia, where shackling is widespread. AIM The aim of this study was to understand the provision of mental health care in Indonesia, thereby identifying ways to improve care and better support carers. METHODS Grounded theory methods were used. Study participants included health professionals, non-health professionals and individuals living with a mental disorder who were well at the time (n = 49). Data were collected through interviews conducted in 2011 and 2012. RESULTS The core category of this grounded theory is 'connecting care' a term coined by the authors to describe a model of care that involves health professionals and non-health professionals, such as family members. Four main factors influence care-providers' decision-making: competence, willingness, available resources and compliance with institutional policy. Health professionals are influenced most strongly by institutional policy when deciding whether to accept or shift responsibility to provide care. Non-health professionals base their decisions largely on personal circumstances. Jointly-made decisions can be matched or unmatched. Unmatched decisions can result in forced provision of care, increasing risks of human rights violations. LIMITATIONS Generalization of this grounded theory is difficult as the research was conducted in two provinces of Indonesia. CONCLUSION Institutional policy was important in the process of connecting care for the mentally ill in Indonesia and needs to be underpinned by legislation to protect human rights. IMPLICATIONS FOR NURSING AND HEALTH POLICY Strengthening mental health legislation in Indonesia will allow nurses to connect care more effectively.
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Affiliation(s)
- I Nurjannah
- Centre for Nursing and Midwifery Research James Cook University, University of Alberta, Armidale, New South Wales, Australia.,School of Nursing Faculty of Medicine, Gadjah Mada University, Yogyakarta, Indonesia
| | - J Mills
- Centre for Nursing and Midwifery Research James Cook University, University of Alberta, Armidale, New South Wales, Australia
| | - T Park
- Faculty of Nursing, University of Alberta, Armidale, New South Wales, Australia
| | - K Usher
- School of Health, University of New England, Armidale, New South Wales, Australia
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Nam S, Chang HR, Kim KT, Kook MC, Hong D, Kwon CH, Jung HR, Park HS, Powis G, Liang H, Park T, Kim YH. PATHOME: an algorithm for accurately detecting differentially expressed subpathways. Oncogene 2014; 33:4941-51. [PMID: 24681952 PMCID: PMC4182295 DOI: 10.1038/onc.2014.80] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [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: 09/24/2013] [Revised: 02/11/2014] [Accepted: 02/14/2014] [Indexed: 12/18/2022]
Abstract
The translation of high-throughput gene expression data into biologically meaningful information remains a bottleneck. We developed a novel computational algorithm, PATHOME, for detecting differentially expressed biological pathways. This algorithm employs straightforward statistical tests to evaluate the significance of differential expression patterns along subpathways. Applying it to gene expression data sets of gastric cancer (GC), we compared its performance with those of other leading programs. Based on a literature-driven reference set, PATHOME showed greater consistency in identifying known cancer-related pathways. For the WNT pathway uniquely identified by PATHOME, we validated its involvement in gastric carcinogenesis through experimental perturbation of both cell lines and animal models. We identified HNF4α-WNT5A regulation in the cross-talk between the AMPK metabolic pathway and the WNT signaling pathway, and further identified WNT5A as a potential therapeutic target for GC. We have demonstrated PATHOME to be a powerful tool, with improved sensitivity for identifying disease-related dysregulated pathways.
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Affiliation(s)
- S Nam
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H R Chang
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - K-T Kim
- Molecular Epidemiology Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - M-C Kook
- Department of Pathology, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - D Hong
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - C H Kwon
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H R Jung
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H S Park
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - G Powis
- Cancer Center, Sanford-Burnham Medical Research Institute, La Jolla, CA, USA
| | - H Liang
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - T Park
- Department of Statistics, Seoul National University, Kwanak-gu Seoul, Republic of Korea
| | - Y H Kim
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
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Jang JY, Park T, Lee S, Kang MJ, Lee SY, Lee KB, Chang YR, Kim SW. Validation of international consensus guidelines for the resection of branch duct-type intraductal papillary mucinous neoplasms. Br J Surg 2014; 101:686-92. [DOI: 10.1002/bjs.9491] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2014] [Indexed: 12/12/2022]
Abstract
Abstract
Background
Classifications of intraductal papillary mucinous neoplasm (IPMN) remain ambiguous, especially for the mixed type. Factors predicting malignancy remain unclear. The aim of this study was to evaluate the usefulness of factors predicting malignancy in the new international consensus guidelines for resection of branch duct-type (BD)-IPMN and to compare them with those in the previous version.
Methods
A prospectively collected database of patients with biopsy-proven BD-IPMN was analysed to compare factors between the first and second consensus guidelines, particularly as predictors of malignancy.
Results
Of 350 patients with BD-IPMN, sensitivity (0·724) and balanced accuracy (0·751) of the second guidelines were superior to those (0·639 and 0·730) in the first version at the expense of slightly reduced specificity (0·779 versus 0·822 for the first version) by random forest models. Multiple logistic regression analysis showed that main pancreatic duct dilatation greater than 5 mm (hazard ratio (HR) 4·54, 95 per cent confidence interval 2·45 to 8·41; P < 0·001), mural nodules (HR 6·27, 3·27 to 12·01; P < 0·001) and carbohydrate antigen 19–9 level above 37 units/ml (HR 4·03, 1·83 to 8·90; P = 0·001) were independent predictors of BD-IPMN malignancy.
Conclusion
The new consensus guidelines provide better sensitivity, performance of factors predicting malignancy, and balanced accuracy in the diagnosis of BD-IPMN malignancy. Size alone was limited in predicting malignancy. Variability in clinical significance of the individual factors associated with a risk of malignancy indicates the need for a tailored approach in the management of patients with BD-IPMN.
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Affiliation(s)
- J-Y Jang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - T Park
- Department of Statistics, Seoul National University College of Natural Sciences, Seoul, Korea
| | - S Lee
- Department of Statistics, Seoul National University College of Natural Sciences, Seoul, Korea
| | - M J Kang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S Y Lee
- Department of Mathematics and Statistics, Sejong University College of Natural Sciences, Seoul, Korea
| | - K B Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Y R Chang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S-W Kim
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
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Garcia Martin A, Fernandez Golfin C, Salido Tahoces L, Fernandez Santos S, Jimenez Nacher J, Moya Mur J, Velasco Valdazo E, Hernandez Antolin R, Zamorano Gomez J, Veronesi F, Corsi C, Caiani E, Lamberti C, Tsang W, Holmgren C, Guo X, Bateman M, Iaizzo P, Vannier M, Lang R, Patel A, Adamayn K, Tumasyan LR, Chilingaryan A, Nasr G, Eleraki A, Farouk N, Axelsson A, Langhoff L, Jensen M, Vejlstrup N, Iversen K, Bundgaard H, Watanabe T, Iwai-Takano M, Attenhofer Jost CH, Pfyffer M, Seifert B, Scharf C, Candinas R, Medeiros-Domingo A, Chin JY, Yoon H, Vollbon W, Singbal Y, Rhodes K, Wahi S, Katova TM, Simova II, Hristova K, Kostova V, Pauncheva B, Bircan A, Sade L, Eroglu S, Pirat B, Okyay K, Bal U, Muderrisoglu H, Heggemann F, Buggisch H, Welzel G, Doesch C, Hansmann J, Schoenberg S, Borggrefe M, Wenz F, Papavassiliu T, Lohr F, Roussin I, Drakopoulou M, Rosen S, Sharma R, Prasad S, Lyon A, Carpenter J, Senior R, Breithardt OA, Razavi H, Arya A, Nabutovsky Y, Ryu K, Gaspar T, Kosiuk J, Eitel C, Hindricks G, Piorkowski C, Pires S, Nunes A, Cortez-Dias N, Belo A, Zimbarra Cabrita I, Sousa C, Pinto F, Baron T, Johansson K, Flachskampf F, Christersson C, Pires S, Cortez-Dias N, Nunes A, Belo A, Zimbarra Cabrita I, Sousa C, Pinto F, Santoro A, Federico Alvino F, Giovanni Antonelli G, Raffaella De Vito R, Roberta Molle R, Sergio Mondillo S, Gustafsson M, Alehagen U, Johansson P, Tsukishiro Y, Onishi T, Chimura M, Yamada S, Taniguchi Y, Yasaka Y, Kawai H, Souza JRM, Zacharias LGT, Pithon KR, Ozahata TM, Cliquet AJ, Blotta MH, Nadruz WJ, Fabiani I, Conte L, Cuono C, Liga R, Giannini C, Barletta V, Nardi C, Delle Donne M, Palagi C, Di Bello V, Glaveckaite S, Valeviciene N, Palionis D, Laucevicius A, Hristova K, Bogdanova V, Ferferieva V, Shiue I, Castellon X, Boles U, Rakhit R, Shiu MF, Gilbert T, Papachristidis A, Henein MY, Westholm C, Johnson J, Jernberg T, Winter R, Ghosh Dastidar A, Augustine D, Cengarle M, Mcalindon E, Bucciarelli-Ducci C, Nightingale A, Onishi T, Watanabe T, Fujita M, Mizukami Y, Sakata Y, Nakatani S, Nanto S, Uematsu M, Saraste A, Luotolahti M, Varis A, Vasankari T, Tunturi S, Taittonen M, Rautakorpi P, Airaksinen J, Ukkonen H, Knuuti J, Boshchenko A, Vrublevsky A, Karpov R, Yoshikawa H, Suzuki M, Hashimoto G, Kusunose Y, Otsuka T, Nakamura M, Sugi K, Rosner S, Orban M, Lesevic H, Karl M, Hadamitzky M, Sonne C, Panaro A, Martinez F, Huguet M, Moral S, Palet J, Oller G, Cuso I, Jornet A, Rodriguez Palomares J, Evangelista A, Stoebe S, Tarr A, Pfeiffer D, Hagendorff A, Gilmanov D, Baroni M, Cerone E, Galli E, Berti S, Glauber M, Soesanto A, Yuniadi Y, Mansyur M, Kusmana D, Venkateshvaran A, Dash PK, Sola S, Govind SC, Shahgaldi K, Winter R, Brodin LA, Manouras A, Dokainish H, Sadreddini M, Nieuwlaat R, Lonn E, Healey J, Nguyen V, Cimadevilla C, Dreyfus J, Codogno I, Vahanian A, Messika-Zeitoun D, Lim YJ, Kawamura A, Kawano S, Polte C, Gao S, Lagerstrand K, Cederbom U, Bech-Hanssen O, Baum J, Beeres F, Van Hall S, Boering Y, Zeus T, Kehmeier E, Kelm M, Balzer J, Della Mattia A, Pinamonti B, Abate E, Nicolosi G, Proclemer A, Bassetti M, Luzzati R, Sinagra G, Hlubocka Z, Jiratova K, Dostalova G, Hlubocky J, Dohnalova A, Linhart A, Palecek T, Sonne C, Lesevic H, Karl M, Rosner S, Hadamitzky M, Ott I, Malev E, Reeva S, Zemtsovsky E, Igual Munoz B, Alonso Fernandez Pau P, Miro Palau Vicente V, Maceira Gonzalez Alicia A, Estornell Erill J, Andres La Huerta A, Donate Bertolin L, Valera Martinez F, Salvador Sanz Antonio A, Montero Argudo Anastasio A, Nemes A, Kalapos A, Domsik P, Chadaide S, Sepp R, Forster T, Onaindia J, Arana X, Cacicedo A, Velasco S, Rodriguez I, Capelastegui A, Sadaba M, Gonzalez J, Salcedo A, Laraudogoitia E, Archontakis S, Gatzoulis K, Vlasseros I, Arsenos P, Tsiachris D, Vouliotis A, Sideris S, Karistinos G, Kalikazaros I, Stefanadis C, Ancona R, Comenale Pinto S, Caso P, Coppola M, Arenga F, Cavallaro C, Vecchione F, D'onofrio A, Calabro R, Correia CE, Moreira D, Cabral C, Santos J, Cardoso J, Igual Munoz B, Maceira Gonzalez A, Estornell Erill Jordi J, Jimenez Carreno R, Arnau Vives M, Monmeneu Menadas J, Domingo-Valero D, Sanchez Fernandez E, Montero Argudo Anastasio A, Zorio Grima E, Cincin A, Tigen K, Karaahmet T, Dundar C, Sunbul M, Guler A, Bulut M, Basaran Y, Mordi I, Carrick D, Berry C, Tzemos N, Cruz I, Ferreira A, Rocha Lopes L, Joao I, Almeida A, Fazendas P, Cotrim C, Pereira H, Ochoa JP, Fernandez A, Filipuzzi J, Casabe J, Salmo J, Vaisbuj F, Ganum G, Di Nunzio H, Veron L, Guevara E, Salemi V, Nerbass F, Portilho N, Ferreira Filho J, Pedrosa R, Arteaga-Fernandez E, Mady C, Drager L, Lorenzi-Filho G, Marques J, Almeida AMG, Menezes M, Silva G, Placido R, Amaro C, Brito D, Diogo A, Lourenco MR, Azevedo O, Moutinho J, Nogueira I, Machado I, Portugues J, Quelhas I, Lourenco A, Calore C, Muraru D, Melacini P, Badano L, Mihaila S, Puma L, Peluso D, Casablanca S, Ortile A, Iliceto S, Kang MK, Yu S, Park J, Kim S, Park T, Mun HS, C S, Cho SR, Han S, Lee N, Khalifa EA, Hamodraka E, Kallistratos M, Zacharopoulou I, Kouremenos N, Mavropoulos D, Tsoukas A, Kontogiannis N, Papanikolaou N, Tsoukanas K, Manolis A, Villagraz Tecedor L, Jimenez Lopez Guarch C, Alonso Chaterina S, Blazquez Arrollo L, Lopez Melgar B, Veitia Sarmiento A, Mayordomo Gomez S, Escribano Subias M, Lichodziejewska B, Kurnicka K, Goliszek S, Dzikowska Diduch O, Kostrubiec M, Krupa M, Grudzka K, Ciurzynski M, Palczewski P, Pruszczyk P, Sakata K, Ishiguro M, Kimura G, Uesugo Y, Takemoto K, Minamishima T, Futuya M, Matsue S, Satoh T, Yoshino H, Signorello M, Gianturco L, Colombo C, Stella D, Atzeni F, Boccassini L, Sarzi-Puttini P, Turiel M, Kinova E, Deliiska B, Krivoshiev S, Goudev A, De Stefano F, Santoro C, Buonauro A, Schiano-Lomoriello V, Muscariello R, De Palma D, Galderisi M, Ranganadha Babu B, Chidambaram S, Sangareddi V, Dhandapani V, Ravi M, Meenakshi K, Muthukumar D, Swaminathan N, Ravishankar G, Bruno RM, Giardini G, Catizzo B, Brustia R, Malacrida S, Armenia S, Cauchy E, Pratali L, Cesana F, Alloni M, Vallerio P, De Chiara B, Musca F, Belli O, Ricotta R, Siena S, Moreo A, Giannattasio C, Magnino C, Omede' P, Avenatti E, Presutti D, Sabia L, Moretti C, Bucca C, Gaita F, Veglio F, Milan A, Eichhorn J, Springer W, Helling A, Alarajab A, Loukanov T, Ikeda M, Kijima Y, Akagi T, Toh N, Oe H, Nakagawa K, Tanabe Y, Watanabe N, Ito H, Hascoet S, Hadeed K, Marchal P, Bennadji A, Peyre M, Dulac Y, Heitz F, Alacoque X, Chausseray G, Acar P, Kong W, Ling L, Yip J, Poh K, Vassiliou V, Rekhraj S, Hoole S, Watkinson O, Kydd A, Boyd J, Mcnab D, Densem C, Shapiro L, Rana B, Potpara T, Djikic D, Polovina M, Marcetic Z, Peric V, Lip G, Gaudron P, Niemann M, Herrmann S, Hu K, Strotmann J, Beer M, Bijnens B, Liu D, Ertl G, Weidemann F, Peric V, Jovanovic A, Djikic D, Otasevic P, Kochanowski J, Piatkowski R, Scislo P, Grabowski M, Marchel M, Opolski G, Bandera F, Guazzi M, Arena R, Corra U, Ghio S, Forfia P, Rossi A, Dini F, Cahalin L, Temporelli L, Rallidis L, Tsangaris I, Makavos G, Anthi A, Pappas A, Orfanos S, Lekakis J, Anastasiou-Nana M, Kuznetsov VA, Krinochkin DV, Yaroslavskaya EI, Zaharova EH, Pushkarev GS, Mizia-Stec K, Wita K, Mizia M, Loboz-Grudzien K, Szwed H, Kowalik I, Kukulski T, Gosciniak P, Kasprzak J, Plonska-Gosciniak E, Cimino S, Pedrizzetti G, Tonti G, Cicogna F, Petronilli V, De Luca L, Iacoboni C, Agati L, Hoffmann R, Barletta G, Von Bardeleben S, Kasprzak J, Greis C, Vanoverschelde J, Becher H, Galrinho A, Moura Branco L, Fiarresga A, Cacela D, Ramos R, Cruz Ferreira R, Van Den Oord S, Akkus Z, Bosch J, Renaud G, Sijbrands E, Verhagen H, Van Der Lugt A, Van Der Steen A, Schinkel A, Mordi I, Tzemos N, Stanton T, Delgado D, Yu E, Drakopoulou M, Gonzalez-Gonzalez A, Karonis T, Roussin I, Babu-Narayan S, Swan L, Senior R, Li W, Parisi V, Pagano G, Pellegrino T, Femminella G, De Lucia C, Formisano R, Cuocolo A, Perrone Filardi P, Leosco D, Rengo G, Unlu S, Farsalinos K, Amelot K, Daraban A, Ciarka A, Delcroix M, Voigt J, Miskovic A, Poerner T, Goebel B, Stiller C, Moritz A, Sakata K, Uesugo Y, Kimura G, Ishiguro M, Takemoto K, Minamishima T, Futuya M, Satoh T, Yoshino H, Miyoshi T, Tanaka H, Kaneko A, Matsumoto K, Imanishi J, Motoji Y, Mochizuki Y, Minami H, Kawai H, Hirata K, Wutthimanop A, See O, Vathesathokit P, Yamwong S, Sritara P, Rosner A, Kildal A, Stenberg T, Myrmel T, How O, Capriolo M, Frea S, Giustetto C, Scrocco C, Benedetto S, Grosso Marra W, Morello M, Gaita F, Garcia-Gonzalez P, Cozar-Santiago P, Chacon-Hernandez N, Ferrando-Beltran M, Fabregat-Andres O, De La Espriella-Juan R, Fontane-Martinez C, Jurado-Sanchez R, Morell-Cabedo S, Ridocci-Soriano F, Mihaila S, Piasentini E, Muraru D, Peluso D, Casablanca S, Puma L, Naso P, Iliceto S, Vinereanu D, Badano L, Tarzia P, Villano A, Figliozzi S, Russo G, Parrinello R, Lamendola P, Sestito A, Lanza G, Crea F, Sulemane S, Panoulas V, Bratsas A, Frankel A, Nihoyannopoulos P, Dores H, Andrade M, Almeida M, Goncalves P, Branco P, Gaspar A, Gomes A, Horta E, Carvalho M, Mendes M, Yue W, Li X, Chen Y, Luo Y, Gu P, Yiu K, Siu C, Tse H, Cho E, Lee S, Hwang B, Kim D, Jang S, Jeon H, Youn H, Kim J. Poster session Thursday 12 December - PM: 12/12/2013, 14:00-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet204] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Solid organ transplant recipients are at increased risk of poor sleep due to pharmacotherapy and co-morbidities, but sleep problems are often unrecognized and untreated. Study aims were to measure rates of occurrence, characteristics, and correlates of poor sleep in recipients. The Pittsburgh Sleep Quality Index (PSQI) and sleep parameters measured by wrist actigraphy were obtained at baseline from 143 kidney, liver, heart, lung, or pancreas transplant recipients enrolled in a psychosocial intervention trial to improve symptoms and quality of life. Rates of poor sleep were determined using accepted clinical cutoffs; 41% (58 of 143) were poor sleepers (PSQI > 8) and 36% used sleep medications in the past month. Fifteen percent reported having obstructive sleep apnea (OSA) and 4% reported restless legs syndrome (RLS). Based on actigraphy (n = 73), 69% lacked sleep efficiency (SE), 32% took >30 min to fall asleep, 88% awakened during the night for more than 30 min, and 25% slept less than six h per night. Obesity and use of psychotropics or sleep medications, and pain were independent risk factors for poor objectively measured sleep. Poor sleep is an undertreated problem in transplantation. Screening for sleep problems and behavioral therapies with sleep hygiene instruction may benefit recipients.
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Affiliation(s)
- M Reilly-Spong
- College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
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Usher K, Park T, Foster K. The experience of weight gain as a result of taking second-generation antipsychotic medications: the mental health consumer perspective. J Psychiatr Ment Health Nurs 2013; 20:801-6. [PMID: 23146024 DOI: 10.1111/jpm.12019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/13/2012] [Indexed: 11/30/2022]
Abstract
This interpretive qualitative study aimed to describe and construct the meaning of the experience of living with the weight gain associated with second-generation antipsychotics. A qualitative study that incorporated the tenets of phenomenology and utilized in-depth interviews was conducted with eight mental health consumers. Thematic analysis resulted in three themes: Grappling with the weight; Living with the consequences of being overweight; and Experiencing negative emotions about the weight gain. The findings indicate that consumers struggle to manage the insatiable appetite and the related weight gain associated with second-generation antipsychotic medication, as well as the numerous associated physical and emotional issues. Adherence with prescribed second-generation antipsychotic medication was also affected and a number of the participants indicated they had ceased or considered ceasing their medication because of the weight gain associated with the drugs.
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Affiliation(s)
- K Usher
- School of Nursing, Midwifery & Nutrition, James Cook University, Cairns, Qld, Australia
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Min SI, Ha J, Kim YS, Ahn SH, Park T, Park DD, Kim SM, Min SK, Hong H, Ahn C, Kim SJ. Therapeutic equivalence and pharmacokinetics of generic tacrolimus formulation in de novo kidney transplant patients. Nephrol Dial Transplant 2013; 28:3110-9. [DOI: 10.1093/ndt/gft300] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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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Min SI, Ha J, Kang HG, Ahn S, Park T, Park DD, Kim SM, Hong HJ, Min SK, Ha IS, Kim SJ. Conversion of twice-daily tacrolimus to once-daily tacrolimus formulation in stable pediatric kidney transplant recipients: pharmacokinetics and efficacy. Am J Transplant 2013; 13:2191-7. [PMID: 23734831 DOI: 10.1111/ajt.12274] [Citation(s) in RCA: 22] [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: 01/30/2013] [Revised: 03/29/2013] [Accepted: 03/31/2013] [Indexed: 01/25/2023]
Abstract
The pharmacokinetics, efficacy and safety of once-daily tacrolimus formulation (Tac-OD) were assessed in 34 stable pediatric kidney transplant recipients. Enrolled patients received their dose of twice-daily tacrolimus formulation (Tac-BID) on study Days 0 through 7. On the morning of study Day 8, the total daily doses for patients were converted to Tac-OD on a 1:1 basis and maintained on a once-daily morning dosing regimen. Tacrolimus pharmacokinetic profiles were obtained on study Days 7, 14 and 28 (after dose adjustment). Although the mean C0 concentrations (4.10 ± 1.16-3.53 ± 1.10 ng/mL, p = 0.004), and AUC0-24 (151.8 ± 41.6-129.8 ± 39.3 ng h/mL, p < 0.001) were decreased significantly after a 1:1 based conversion, there was high interindividual variability. The dose of Tac-OD was decreased in 26.5% and increased in 44.1% of patients. The resultant tacrolimus dose and pharmacokinetic profiles on study Day 28 were comparable to those on Day 7. There were no serious adverse events. In conclusion, Tac-BID can be safely converted to Tac-OD in stable pediatric kidney transplant patients with the heightened therapeutic drug monitoring. Effects of drug conversion on the cardiovascular risk factors, neurological side effects and adherence should be further evaluated.
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Affiliation(s)
- S I Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Kang S, Lu K, Leelawattanachai J, Hu X, Park S, Park T, Min IM, Jin MM. Virus-mimetic polyplex particles for systemic and inflammation-specific targeted delivery of large genetic contents. Gene Ther 2013; 20:1042-52. [DOI: 10.1038/gt.2013.29] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 04/11/2013] [Accepted: 04/29/2013] [Indexed: 01/20/2023]
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Heo JS, Choi SM, Kim HO, Kim EH, You J, Park T, Kim E, Kim HS. Neural transdifferentiation of human bone marrow mesenchymal stem cells on hydrophobic polymer-modified surface and therapeutic effects in an animal model of ischemic stroke. Neuroscience 2013; 238:305-18. [PMID: 23454369 DOI: 10.1016/j.neuroscience.2013.02.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 02/01/2013] [Accepted: 02/05/2013] [Indexed: 01/01/2023]
Abstract
Human bone marrow-derived mesenchymal stem cells (MSCs) have multi-lineage differentiation potential and can become cells of mesodermal and neural lineages. These stem cells thus hold considerable clinical promise for the treatment of neurodegenerative diseases. For successful regeneration of damaged neural tissues, directed differentiation of neural or neuronal precursor cells from MSCs and integration of transplanted cells are pivotal factors. We induced MSCs into neurogenesis using a modified protocol. The therapeutic potency of the resulting neural progenitor cells in a rat model of ischemic stroke was analyzed. Using a highly hydrophobic diphenylamino-s-triazine-bridged p-phenylene (DTOPV)-coated surface and adopting a procedure for propagation of neural stem cells, we efficiently converted MSCs into neurosphere-like cellular aggregates (NS-MSCs). The spherical cells were subsequently induced to differentiate into neural cells expressing neuroectodermal markers. To determine whether these cells had neuronal fates and induced neuro-protective effects in vivo, NS-MSCs were intra-cerebrally administered to rats 48h after permanent middle cerebral artery occlusion (pMCAo). The results showed a remarkable attenuation of ischemic damage with significant functional recovery, although the cells were not fully incorporated into the damaged tissues on post-operative day 26. Improvement in the NS-MSC-transplanted rats was faster than in the MSC group and suppression of inflammation was likely the key factor. Thus, our culture system using the hydrophobic surface of a biocompatible DTOPV coating efficiently supported neural cell differentiation from MSCs. Neural-primed MSCs exhibited stronger therapeutic effects than MSCs in rat brains with pMCAo.
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Affiliation(s)
- J S Heo
- Cell Therapy Center, Severance Hospital, Seoul, Republic of Korea
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Gofryk K, Ronning F, Zhu JX, Ou MN, Tobash PH, Stoyko SS, Lu X, Mar A, Park T, Bauer ED, Thompson JD, Fisk Z. Electronic tuning and uniform superconductivity in CeCoIn5. Phys Rev Lett 2012; 109:186402. [PMID: 23215302 DOI: 10.1103/physrevlett.109.186402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 09/11/2012] [Indexed: 06/01/2023]
Abstract
We report a globally reversible effect of electronic tuning on the magnetic phase diagram in CeCoIn(5) driven by electron (Pt and Sn) and hole (Cd, Hg) doping. Consequently, we are able to extract the superconducting pair breaking component for hole and electron dopants with pressure and codoping studies, respectively. We find that these nominally nonmagnetic dopants have a remarkably weak pair breaking effect for a d-wave superconductor. The pair breaking is weaker for hole dopants, which induce magnetic moments, than for electron dopants. Furthermore, both Pt and Sn doping have a similar effect on superconductivity despite being on different dopant sites, arguing against the notion that superconductivity lives predominantly in the CeIn(3) planes of these materials. In addition, we shed qualitative understanding on the doping dependence with density functional theory calculations.
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Affiliation(s)
- K Gofryk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
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Lee J, Ko M, Park T, Kang B, Moon T, Lee M. P02.79. Study on the basic tongue diagnosis indicators for pattern identifications in stroke using a decision tree method. Altern Ther Health Med 2012. [PMCID: PMC3373360 DOI: 10.1186/1472-6882-12-s1-p135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Park J, Hong S, Park T, Liu Y, Kim J, Kim T, Kim A, Jung S, Park H, Choi S. P02.136. A randomized controlled trial for the use of qigong in the treatment of pre and mild essential hypertension. Altern Ther Health Med 2012. [PMCID: PMC3373686 DOI: 10.1186/1472-6882-12-s1-p192] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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