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Tan K, Adeniyi OO, Letko A, RuddGarces G, Manz E, Wagner H, Zanolari P, Drögemüller C, Lühken G. Identification of genomic regions associated with differences in fleece type in Huacaya and Suri alpacas (Vicugna pacos). Anim Genet 2024; 55:163-167. [PMID: 37985006 DOI: 10.1111/age.13377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/22/2023]
Abstract
The difference in fleece type is the distinguishing trait between the two types of alpacas (Vicugna pacos), Huacaya and Suri. The Suri fleece type has been found to be inherited dominantly over the Huacaya type, resulting in offspring with the Suri phenotype. The aim of our study was to map genomic regions associated with the two different fleece types. In this study, 91 alpacas (54 Huacayas and 37 Suris) from Germany and Switzerland were genotyped using the 76k alpaca SNP array. Only 59k chromosome-localised markers map to the alpaca reference assembly VicPac3.1, and after quality control 49 866 SNPs, were retained for population structure assessment and to conduct a genome-wide association study. Both principal component and neighbour-joining tree analysis showed that the two fleece-type cohorts overlapped rather than forming two distinct clusters. Genome-wide significantly associated markers were observed in the scaffold region of chromosome 16 (NW_021964192.1), which contains a cluster of keratin genes. A haplotype predominantly found in Suri alpacas has been identified which supports dominant inheritance. Variant filtering of nine whole-genome sequenced alpacas from both fleece types in the critical interval of 0.4 Mb did not reveal perfect segregation of either fleece type for specific variants. To our knowledge, this is the first study to use the recently developed species-specific SNP array to identify genomic regions associated with differences in fleece type in alpacas. There are still some limitations, such as the preliminary status of the reference assembly and the incomplete annotation of the alpaca genome.
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Affiliation(s)
- K Tan
- Institute of Animal Breeding and Genetics, Justus Liebig University Giessen, Giessen, Germany
| | - O O Adeniyi
- Institute of Animal Breeding and Genetics, Justus Liebig University Giessen, Giessen, Germany
| | - A Letko
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - G RuddGarces
- Institute of Animal Breeding and Genetics, Justus Liebig University Giessen, Giessen, Germany
| | - E Manz
- Generatio GmbH, Heidelberg, Germany
| | - H Wagner
- Animal Clinic for Reproduction and Neonatology, Justus Liebig University Giessen, Giessen, Germany
| | - P Zanolari
- Clinic for Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - C Drögemüller
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - G Lühken
- Institute of Animal Breeding and Genetics, Justus Liebig University Giessen, Giessen, Germany
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Ghalili S, David E, Ungar B, Tan K, Lang CCV, Meariman M, Andrews E, Guttman-Yassky E. IL-12/23-targeting in seborrheic dermatitis patients leads to long-lasting response. Arch Dermatol Res 2023; 315:2937-2940. [PMID: 37530785 DOI: 10.1007/s00403-023-02680-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 08/03/2023]
Affiliation(s)
- Sabrina Ghalili
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
- SUNY Downstate College of Medicine, Brooklyn, NY, USA
| | - Eden David
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
| | - Benjamin Ungar
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
| | - Kathryn Tan
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
| | - Claudia C V Lang
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Marguerite Meariman
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
| | - Elizabeth Andrews
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA
| | - Emma Guttman-Yassky
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, 5 East 98th Street, New York, NY, 10029, USA.
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Pagan AD, Ghalili S, Cices A, Facheris P, Tan K, Ungar B, Guttman-Yassky E. Atopic dermatitis induced during anti-TNF-α therapy for inflammatory bowel disease: Potential for Th2 inhibition with dupilumab. J Allergy Clin Immunol Pract 2023; 11:2235-2238.e1. [PMID: 37088378 DOI: 10.1016/j.jaip.2023.03.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 03/19/2023] [Accepted: 03/25/2023] [Indexed: 04/25/2023]
Affiliation(s)
- Angel D Pagan
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Sabrina Ghalili
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Ahuva Cices
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Paola Facheris
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | - Kathryn Tan
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Benjamin Ungar
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Emma Guttman-Yassky
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY.
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Tao M, Healy G, Jaberi A, Tan K, Rajan D, Dideban A, Hilario K, Mafeld S. Abstract No. 258 Incidence and Classification of Incident Reporting in the Interventional Radiology Department of a Large Multicenter Tertiary Care Institution. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.322] [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: 02/27/2023] Open
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Ungar B, Hartzell S, Lozano‐Ojalvo D, Ghalili S, Bose S, Golant AK, Tan K, Estrada YD, Singer GK, Pavel AB, Cravedi P, Guttman‐Yassky E. The impact of dupilumab treatment on SARS-CoV-2 T cell responses in atopic dermatitis patients. Allergy 2023; 78:571-574. [PMID: 36181718 PMCID: PMC9537998 DOI: 10.1111/all.15540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 09/19/2022] [Accepted: 09/25/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Benjamin Ungar
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Susan Hartzell
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
- Precision Immunology Institute, Icahn School of Medicine at Mount SinaiNew YorkNYUnited States
| | - Daniel Lozano‐Ojalvo
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
- Precision Immunology Institute, Icahn School of Medicine at Mount SinaiNew YorkNYUnited States
| | - Sabrina Ghalili
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Swaroop Bose
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Alexandra K. Golant
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Kathryn Tan
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Yeriel D. Estrada
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Giselle K. Singer
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
| | - Ana B. Pavel
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
- Department of Biomedical Engineeringthe University of Mississippi, University
| | - Paolo Cravedi
- Precision Immunology Institute, Icahn School of Medicine at Mount SinaiNew YorkNYUnited States
| | - Emma Guttman‐Yassky
- Present address:
Department of Dermatology and Laboratory of Inflammatory Skin DiseasesIcahn School of Medicine at Mount SinaiNew York
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Owji S, Dubin DP, Yassky D, Han J, Tan K, Jagannath S, Parekh S, Gulati N. Dupilumab in Multiple Myeloma: A Case Series. Clin Lymphoma Myeloma Leuk 2022; 22:928-932. [PMID: 36243663 DOI: 10.1016/j.clml.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 01/26/2023]
Affiliation(s)
- Shayan Owji
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029
| | - Danielle P Dubin
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029
| | - Daniel Yassky
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029
| | - Joseph Han
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029
| | - Kathryn Tan
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029
| | - Sundar Jagannath
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1190 One Gustave L. Levy Place, New York, NY, United States
| | - Samir Parekh
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1190 One Gustave L. Levy Place, New York, NY, United States
| | - Nicholas Gulati
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98th St, 5th Floor, New York, NY 10029.
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Liew K, Sundram T, Choo G, Ali R, Muthusamy T, Chew D, Tan K, Chan L, Thuraisingham S, Omar A. Contemporary left main coronary artery percutaneous intervention in a single cardiac centre. Int J Cardiol 2022. [DOI: 10.1016/j.ijcard.2022.10.041] [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: 12/24/2022]
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Lui D, Lee CH, Cheung C, Cheung V, Mak J, Fong C, Lui B, Chow WS, Lee A, Tam A, Pang P, Ho TY, Tan K, Woo YC, Hung I, Lam K. LBODP093 Evaluation Of The Impact Of Covid-19 Vaccines On Thyroid Function And Autoimmunity And The Potential Influence Of Pre-existing Thyroid Autoimmunity On Neutralizing Antibody Responses. J Endocr Soc 2022. [DOI: 10.1210/jendso/bvac150.1523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
Objectives
There are concerns for COVID-19 vaccination in causing thyroid dysfunction and triggering thyroid autoimmunity. Also, data on the impact of pre-existing thyroid autoimmunity on COVID-19 vaccination efficacy are limited. We evaluated the impact of COVID-19 vaccination on thyroid function and antibodies, and the influence of pre-existing thyroid autoimmunity on neutralizing antibody (NAb) responses.
Methods
Adults without history of COVID-19 or thyroid disorders who received COVID-19 vaccination between 14 June 2021 and 8 August 2021 at three vaccination centers were recruited. All participants received two doses of vaccines. Thyroid-stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3), anti-thyroid peroxidase (anti-TPO) and anti-thyroglobulin (anti-Tg) antibodies were measured at baseline and 8 weeks after the first dose of vaccination. Post-vaccination NAb against SARS-CoV-2 receptor-binding domain was measured.
Results
In total, 215 individuals were included (129 BNT162b2 [60%] and 86 CoronaVac [40%] recipients): mean age 49.6 years, 37.2% men, and 12.1% positive for anti-TPO/anti-Tg at baseline. After vaccination, TSH levels did not change (p=0.225), but fT4 slightly increased (from 12. 0±1.1 to 12.2±1.2 pmol/L, p<0. 001) and fT3 slightly decreased (from 4.1±0.4 to 4. 0±0.4 pmol/L, p<0. 001). Only 3 patients (1.4%) had abnormal thyroid function after vaccination: two occurred among BNT162b2 recipients - both were subclinical thyrotoxicosis (TSH 0.32mIU/L, fT4 11.51pmol/L and fT3 4.40pmol/L; TSH 0.34mIU/L, fT4 12.67pmol/L and fT3 4.22pmol/L; both were anti-TPO and anti-Tg negative before and after vaccination); one occurred among CoronaVac recipients - isolated mild low fT3 (TSH 0.90mIU/L, fT4 9.94pmol/L and fT3 2.33pmol/L; anti-TPO/Tg negative before and after vaccination). All three recipients were asymptomatic. Both anti-TPO and anti-Tg titers increased modestly after vaccination (anti-TPO: from 7.50 [IQR: 5.90-11.2] to 9.80 IU/mL [IQR: 7.80-13.1], p<0. 001; anti-Tg: from 12.4 [IQR: 11.1-14.9] to 15.7 IU/mL [IQR: 14.2-18.2], p<0. 001), without significant changes in anti-TPO/Tg positivity. Changes in thyroid function and anti-thyroid antibodies were generally consistent between BNT162b2 and CoronaVac recipients, although anti-TPO titer rise was greater after BNT162b2 (p<0. 001). NAb responses were similar between individuals with and without pre-existing thyroid autoimmunity (p=0.855).
Conclusion
COVID-19 vaccination was associated with a modest increase in anti-thyroid antibody titers. Anti-TPO increase was greater among BNT162b2 recipients. However, there was no clinically significant thyroid dysfunction 8 weeks post-vaccination. NAb responses were not influenced by pre-existing thyroid autoimmunity. Our results provided important reassurance to people to proceed to COVID-19 vaccination.
Presentation: No date and time listed
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Affiliation(s)
- David Lui
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Chi H Lee
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Chloe Cheung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Venus Cheung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Jimmy Mak
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Carol Fong
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Brian Lui
- The University of Hong Kong , Hong Kong , Hong Kong
| | | | - Alan Lee
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Anthony Tam
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Polly Pang
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Tip Yin Ho
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Kathryn Tan
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Yu Cho Woo
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Ivan Hung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Karen Lam
- The University of Hong Kong , Hong Kong , Hong Kong
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Tan K, Dudley J. The marginal gaps of sequentially milled lithium disilicate crowns using two different milling units. Aust Dent J 2022; 67:239-248. [PMID: 35225358 PMCID: PMC9790678 DOI: 10.1111/adj.12909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/13/2021] [Accepted: 02/24/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND The purpose of this study was to compare the marginal gaps of sequentially milled lithium disilicate (LDS) crowns using two different milling units. METHODS One lower left first molar typodont tooth prepared for an LDS crown by an undergraduate student in a simulation clinic was selected. The crown preparation was scanned by a TRIOS 3 scanner and twelve LDS crowns milled by an E4D (E4DM) and a Sirona inLab MC X5 (MCX5) milling unit using identical settings. The crowns were seated onto the original crown preparation and three vertical marginal gap measurements were taken at four locations (mid-buccal, mid-lingual, mid-mesial and mid-distal) using a stereomicroscope. The mean marginal gap (MMG) was calculated for each individual tooth surface and each crown. RESULTS The MMG for the E4DM (100.40 μm) was not significantly different to the MCX5 (101.08 μm) milling unit (P = 0.8809). In both units, there was a statistically significant trend of increasing MMG with sequentially milled crowns using the same burs (E4DM P = 0.0133; MCX5 P = 0.0240). CONCLUSIONS The E4DM and MCX5 milling units produced LDS crowns with similar MMG's and within a clinically acceptable range but with a trend of increasing MMG when analysed sequentially. © 2022 Australian Dental Association.
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Affiliation(s)
- K Tan
- Adelaide Dental SchoolThe University of AdelaideAdelaideSAAustralia
| | - J Dudley
- Adelaide Dental SchoolThe University of AdelaideAdelaideSAAustralia
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Chanchareonsook N, Ling ML, Sim QX, Teoh KH, Tan K, Tan BH, Fong KY, Poon CY. Failure of sterilization in a dental outpatient facility: Investigation, risk assessment, and management. Medicine (Baltimore) 2022; 101:e29815. [PMID: 35945734 PMCID: PMC9351878 DOI: 10.1097/md.0000000000029815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
In 2017, an incident of failed sterilization of dental instruments occurred at a large dental outpatient facility in Singapore. We aim to describe findings of the investigation of the sterilization breach incident, factors related to risk of viral transmission to the potentially affected patients, and the contact tracing process, patient management, and blood test results at a 6-month follow-up. A full assessment of the incident was immediately carried out. The factors related to risk of viral transmission due to affected instruments were analyzed using 3 keys points: breached step(s) and scale of the incident, prevalence of underlying bloodborne diseases and immunity in the Singapore population, health status of potential source patients, and type of dental procedure performed, and health status of affected patients and type of dental procedure received. Up to 72 affected instrument sets were used in 714 potentially affected patients who underwent noninvasive dental procedures. The investigation revealed that there was a lapse in the final step of steam sterilization, resulting in the use of incompletely sterilized items. The assessment determined that there was an extremely low risk of bloodborne virus transmission of diseases to the patients. At the 6-month follow-up, there were no infected/colonized cases found related to the incident. Lapses in the sterilization process for medical and dental instruments can happen, but a risk assessment approach is useful to manage similar incidents. Quick response and proper documentation of the sterilization process can prevent similar incidents.
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Affiliation(s)
- N Chanchareonsook
- Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
| | - ML Ling
- Department of Infection Prevention and Epidemiology, Singapore General Hospital, Singapore
| | - QX Sim
- Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
| | - KH Teoh
- Clinical and Regional Health, National Dental Centre Singapore, Singapore
| | - K Tan
- Clinical Governance and Quality Management, National Dental Centre Singapore, Singapore
| | - BH Tan
- Department of Infectious Disease, Singapore General Hospital, Singapore
| | | | - CY Poon
- Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
- National Dental Centre Singapore, Singapore
- *Correspondence: CY Poon, Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, 5 Second Hospital Avenue, Singapore 168938, Singapore. (e-mail: )
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Min A, Tarulli M, Tan K. Abstract No. 377 Intracavitary injection of amphotericin B for pulmonary aspergillomas. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.458] [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: 11/30/2022] Open
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Ahrari A, Healy G, Alkhalifah F, Oreopoulos G, Tan K, Jaberi A, Mafeld S. Abstract No. 12 A decade of angiographic device malfunction from the FDA MAUDE database. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.085] [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: 10/18/2022] Open
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Nassar M, Mafeld S, Eisenberg N, Lindsay T, Tan K. Abstract No. 82 Bridging stent graft selection for iliac bifurcated grafts: balloon vs. self-expanding stent graft outcomes in a 14-year cohort. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Runciman N, Tan K. P.184 Anaesthetic management of COVID-19 and malignant hyperthermia for emergency caesarean section. Int J Obstet Anesth 2022. [PMCID: PMC9060873 DOI: 10.1016/j.ijoa.2022.103480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tan K, Tan YL, Ng A, Tham C, Tjia H. Associate Professor Loong Si Chin (1935–2022). Singapore Med J 2022. [DOI: 10.11622/smedj.2022073] [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: 11/18/2022]
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Grooby E, Sitaula C, Fattahi D, Sameni R, Tan K, Zhou L, King A, Ramanathan A, Malhotra A, Dumont G, Marzbanrad F. Noisy Neonatal Chest Sound Separation for High-Quality Heart and Lung Sounds. IEEE J Biomed Health Inform 2022; PP. [DOI: 10.1109/jbhi.2022.3215995] [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: 11/06/2022]
Affiliation(s)
- E. Grooby
- Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC, Australia
| | - C. Sitaula
- Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC, Australia
| | | | - R. Sameni
- Department of Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - K. Tan
- Monash Newborn, Monash Children's Hospital, Australia
| | - L. Zhou
- Monash Newborn, Monash Children's Hospital, Australia
| | - A. King
- Monash Newborn, Monash Children's Hospital, Australia
| | - A. Ramanathan
- Monash Newborn, Monash Children's Hospital, Australia
| | - A. Malhotra
- Monash Newborn, Monash Children's Hospital, Australia
| | - G.A. Dumont
- Department of Electrical and Computer Engineering, University British Columbia, Vancouver, BC, Canada
| | - F. Marzbanrad
- Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC, Australia
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Toong C, Sundram T, Liu K, Choo G, Ali R, Muthusamy T, Chew D, Tan K, Chan L, Thuraisingham S, Omar A. Diagnostic performance of QFR vs FFR. Int J Cardiol 2021. [DOI: 10.1016/j.ijcard.2021.10.129] [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: 10/19/2022]
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Sundram T, Toong C, Choo G, Ali R, Muthusamy T, Chew D, Tan K, Chan L, Thuraisingham S, Omar A. 3-Year percutaneous coronary intervention (PCI) procedures and outcomes in a dedicated cardiovascular centre. Int J Cardiol 2021. [DOI: 10.1016/j.ijcard.2021.10.053] [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: 11/28/2022]
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Tada H, Yeo KK, Li JJ, Tan K, Ako J, Krittayaphong R, San Tan R, Aylward PE, Lam CS, Baek SH, Dalal J, Fong A, Li YH, O’Brien RC, Natalie Koh SY, Scherer DJ, Kang V, Nelson AJ, Butters J, Nicholls SJ. Polygenic Risk Scores for Atherosclerotic Cardiovascular Disease in the Asia-Pacific Region. JACC: Asia 2021; 1:294-302. [PMID: 36341217 PMCID: PMC9627888 DOI: 10.1016/j.jacasi.2021.08.008] [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: 05/10/2021] [Revised: 08/04/2021] [Accepted: 08/09/2021] [Indexed: 11/29/2022]
Abstract
Approximately one-half of the phenotypic susceptibility to atherosclerotic cardiovascular disease (ASCVD) has a genetic basis. Although individual allelic variants generally impart a small effect on risk for ASCVD, an emerging body of data has shown that the aggregation and weighting of many of these genetic variations into “scores” can further discriminate an individual’s risk beyond traditional risk factors alone. Consistent with the theory of population genetics, such polygenic risk scores (PRS) appear to be ethnicity specific because their elements comprise single-nucleotide variants that are always ethnicity specific. The currently available PRS are derived predominantly from European ancestry and thus predictably perform less well among non-European participants, a fact that has implications for their use in the Asia-Pacific region. This paper describes the current state of knowledge of PRS, the available data that support their use in this region, and highlights the needs moving forward to safely and effectively implement them in clinical care in the Asia-Pacific region. Genetic factors should be fully accounted for in the clinical care of atherosclerotic cardiovascular disease. A health inequity exists regarding polygenic risk score for atherosclerotic cardiovascular disease in the world. We propose a call to action to address this issue in the Asia-Pacific region.
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Affiliation(s)
- Hayato Tada
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Khung Keong Yeo
- National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences, Singapore
| | - Jian-Jun Li
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Kathryn Tan
- Department of Medicine, University of Hong Kong, Hong Kong
| | - Junya Ako
- Kitasato University, Sagamihara, Japan
| | - Rungroj Krittayaphong
- Division of Cardiology, Department of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Ru San Tan
- National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences, Singapore
| | - Philip E. Aylward
- South Australian Health and Medical Research Institute and Flinders University, Adelaide, South Australia, Australia
| | - Carolyn S.P. Lam
- National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences, Singapore
| | - Sang Hong Baek
- Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | | | - Alan Fong
- Department of Cardiology, Sarawak Heart Centre, and Clinical Research Centre, Sarawak General Hospital, Kuching, Malaysia
| | - Yi-Heng Li
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - Richard C. O’Brien
- University of Melbourne and Austin Health, Melbourne, Victoria, Australia
| | - Si Ya Natalie Koh
- National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences, Singapore
| | - Daniel J. Scherer
- South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | | | - Adam J. Nelson
- Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
| | - Julie Butters
- Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
| | - Stephen J. Nicholls
- Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
- Address for correspondence: Dr Stephen J. Nicholls, Monash Cardiovascular Research Centre, 246 Clayton Road, Clayton, Victoria 3168, Australia. Hayato_Tada_KU
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20
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Cheung C, Ng CY, Lee KL, Wu KX, Chioh FWJ, Tan K, Siau A, Muthiah MD, Chen QF, Tan NS, Ng HH, Dan YY. Endothelial-T cell crosstalk contributes to vascular injury in fatty liver disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Cardiovascular complications are often the fundamental causes of death in non-alcoholic fatty liver disease (NAFLD) patients. While there are known systemic mediators in NAFLD that may induce vascular inflammation, the mechanism of endothelial dysfunction remain understudied. In this work, we harnessed the replicative potential of blood outgrowth endothelial cells (BOECs) to develop personalized cell lines from NAFLD patients and healthy controls. Our transcriptomic analysis showed that the top interactome network enriched in NAFLD BOECs comprised of several C-C and C-X-C chemokine ligands involved in immune cell chemotaxis. We previously reported T cell infiltration in mouse model of non-alcoholic steatohepatitis, and here, we confirmed enhanced endothelial chemokine signatures in arterial histological sections. To elucidate endothelial-immune crosstalk, we performed single-cell analysis on human peripheral blood mononuclear cells and found T cell intensification in NAFLD patients compared to healthy controls. Our immunoprofiling by flow cytometry further revealed that NAFLD patients possessed higher levels CD8+ memory cells. Functionally, T cells, instead of monocytes, adhered more pronouncedly to NAFLD BOECs. In evaluating the CXCL12-CXCR4 axis in chemotaxis, CXCR4 antagonist (AMD3100) substantially modulated the migration of patient-derived CD8+ T cells towards NAFLD BOECs, which was not observed in healthy endothelial-T cell chemotaxis coculture. Finally, we validated NAFLD-associated endothelial dysfunction by enumerating two folds more circulating endothelial cells, a biomarker of vascular injury, in the blood samples of NAFLD patients than healthy controls. Our work provides insights for translation to restore blood vessel health and potentially mitigate adverse vascular events in NAFLD.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Industrial Alignment Fund Pre-Positioning grant from the Agency for Science, Technology and Research, Singapore Endothelial-T cell crosstalk in NAFLD
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Affiliation(s)
- C Cheung
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - C Y Ng
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K L Lee
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K X Wu
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - F W J Chioh
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K Tan
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - A Siau
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - M D Muthiah
- National University Health System, Singapore, Singapore
| | - Q F Chen
- Agency for Science, Technology and Research, Singapore, Singapore
| | - N S Tan
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - H H Ng
- Agency for Science, Technology and Research, Singapore, Singapore
| | - Y Y Dan
- National University Health System, Singapore, Singapore
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21
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Guttman-Yassky E, Diaz A, Pavel AB, Tan K, He H, Xu H, Cueto I, Krueger JG. Response to 'Lack of efficacy of dupilumab in the treatment of keloid disorder' by MH Tirgan and J Uitto. J Eur Acad Dermatol Venereol 2021; 36:e122-e123. [PMID: 34551164 DOI: 10.1111/jdv.17699] [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] [Received: 08/07/2021] [Accepted: 09/16/2021] [Indexed: 11/30/2022]
Affiliation(s)
- E Guttman-Yassky
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A Diaz
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A B Pavel
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - K Tan
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - H He
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - H Xu
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - I Cueto
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY, USA
| | - J G Krueger
- Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY, USA
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22
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Leung YY, Jin A, Tan K, Ang LW, Yuan JM, Koh WP. POS1095 FOOD SOURCES OF DIETARY FIBRE AND RISK OF TOTAL KNEE REPLACEMENT RELATED TO SEVERE OSTEOARTHRITIS, THE SINGAPORE CHINESE HEALTH STUDY. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Although fibre intake was inversely associated with the risk of symptomatic knee osteoarthritis (KOA) in a US study, this association was partially confounded by lower body mass index (BMI) in those with higher fibre intake.Objectives:We evaluated the association between fibre intake and its food sources, and the risk of total knee replacement (TKR) due to severe KOA.Methods:We used data from the Singapore Chinese Health Study, a prospective cohort study that recruited 63,257 participants aged 45-74 years from 1993 to 1998. At baseline, we assessed diet using a validated 165-item semi-quantitative food frequency questionnaire, together with BMI and lifestyle factors. Incident TKR cases were identified via record linkage with nationwide hospital discharge database through 2017. We used multivariable Cox regression models to compute hazard ratio (HR) and the corresponding 95% confidence interval (CI) for risk of TKR.Results:There were 2,816 cases of incident TKR due to severe KOA. Total fibre intake at baseline was not associated with risk of TKR after adjustment for confounders. Among the food sources of fibre, higher intake of legumes was associated with lower risk of TKR in dose-dependent manner; compared with those having the lowest quartile intake, HR (95% CI) was 0.86 (0.76, 0.96) for the highest quartile (p for trend = 0.004). This association was consistent after including BMI in the model, and homogenous across BMI categories. The consumption of other fibre sources, namely grain products, nuts and seeds, soy food, fruits and vegetables, was not associated with risk of TKR.Conclusion:Intake of legumes, but not total fibre, was associated with a reduced risk of TKR. Further research is needed to replicate our findings, and to evaluate possible biological mechanisms that could explain the effect of dietary legumes in pathogenesis or progression of KOA.Table 1.Hazard ratios (95% confidence intervals) for risk of total knee replacement according to intake of fibre (only shown total fibre and legumes): The Singapore Chinese Health Study (1993-2017).Quartiles of energy-adjusted food intakeQ1Q2Q3Q4p for trend 1Total fibreMedian, g/day8.559.4312.1917.70Cases/ person-years528/ 275,050712/ 280,456767/ 284,394809/ 287,955Multivariate Model 11.001.08 (0.96, 1.21)1.12 (1.00, 1.26)1.18 (1.05, 1.32)0.003Multivariate Model 21.001.06 (0.95, 1.19)1.09 (0.97, 1.22)1.11 (0.99, 1.24)0.088LegumesMedian, g/day0.110.432.117.01Cases/ person-years638/ 280,170754/ 278,001756/ 280,407668/ 289,275Multivariate Model 11.000.97 (0.87, 1.09)0.95 (0.84, 1.06)0.84 (0.76, 0.94)<0.001Multivariate Model 21.000.98 (0.87, 1.09)0.94 (0.84, 1.06)0.86 (0.77, 0.96)0.004Multivariate Model 31.000.98 (0.87, 1.09)0.95 (0.84, 1.06)0.86 (0.76, 0.96)0.0041Linear trend was tested by assigning to participants the median value of the quartile and treating this as a continuous variable. 2 The grain products included noodles and pasta, rice, bread and pancakes, breakfast cereals, biscuits and crackers.Multivariate model 1: adjusted for age at interview, sex, year of interview, total energy intake, dialect, education levelMultivariate model 2: model 1 plus BMI, sitting duration, sleep, physical activity, smoking, history of hypertension, diabetes, coronary artery disease and stroke.Multivariate model 3: model 2 plus grain products, legumes, nuts and seeds, soy food, fruits and vegetables.Q = quartileDisclosure of Interests:None declared.
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23
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Kennedy S, Kennedy M, Byrne J, Lindsay T, Jaberi A, Tan K, Mafeld S. Abstract No. 532 Percutaneous drainage for infected aortic sacs post-aneurysm repair: a viable option? J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.341] [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: 10/21/2022] Open
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24
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Koschitzky M, Tan K, Noliza Encarnacion MR, Rivera-Oyola R, Khattri S. Eczematous reactions to psoriasis biologics treated with dupilumab: A case series. JAAD Case Rep 2021; 11:29-32. [PMID: 33898680 PMCID: PMC8058610 DOI: 10.1016/j.jdcr.2021.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Merav Koschitzky
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kathryn Tan
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Ryan Rivera-Oyola
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Saakshi Khattri
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York
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25
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Azizgolshani H, Coppeta JR, Vedula EM, Marr EE, Cain BP, Luu RJ, Lech MP, Kann SH, Mulhern TJ, Tandon V, Tan K, Haroutunian NJ, Keegan P, Rogers M, Gard AL, Baldwin KB, de Souza JC, Hoefler BC, Bale SS, Kratchman LB, Zorn A, Patterson A, Kim ES, Petrie TA, Wiellette EL, Williams C, Isenberg BC, Charest JL. High-throughput organ-on-chip platform with integrated programmable fluid flow and real-time sensing for complex tissue models in drug development workflows. Lab Chip 2021; 21:1454-1474. [PMID: 33881130 DOI: 10.1039/d1lc00067e] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Drug development suffers from a lack of predictive and human-relevant in vitro models. Organ-on-chip (OOC) technology provides advanced culture capabilities to generate physiologically appropriate, human-based tissue in vitro, therefore providing a route to a predictive in vitro model. However, OOC technologies are often created at the expense of throughput, industry-standard form factors, and compatibility with state-of-the-art data collection tools. Here we present an OOC platform with advanced culture capabilities supporting a variety of human tissue models including liver, vascular, gastrointestinal, and kidney. The platform has 96 devices per industry standard plate and compatibility with contemporary high-throughput data collection tools. Specifically, we demonstrate programmable flow control over two physiologically relevant flow regimes: perfusion flow that enhances hepatic tissue function and high-shear stress flow that aligns endothelial monolayers. In addition, we integrate electrical sensors, demonstrating quantification of barrier function of primary gut colon tissue in real-time. We utilize optical access to the tissues to directly quantify renal active transport and oxygen consumption via integrated oxygen sensors. Finally, we leverage the compatibility and throughput of the platform to screen all 96 devices using high content screening (HCS) and evaluate gene expression using RNA sequencing (RNA-seq). By combining these capabilities in one platform, physiologically-relevant tissues can be generated and measured, accelerating optimization of an in vitro model, and ultimately increasing predictive accuracy of in vitro drug screening.
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Affiliation(s)
- H Azizgolshani
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - J R Coppeta
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - E M Vedula
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - E E Marr
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - B P Cain
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - R J Luu
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - M P Lech
- Pfizer, Inc., 1 Portland Street, Cambridge, MA 02139, USA
| | - S H Kann
- Draper, 555 Technology Square, Cambridge, MA 02139, USA. and Department of Mechanical Engineering, Boston University, 110 Cummington Mall, Boston, MA 02215, USA
| | - T J Mulhern
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - V Tandon
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - K Tan
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | | | - P Keegan
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - M Rogers
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - A L Gard
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - K B Baldwin
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - J C de Souza
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - B C Hoefler
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - S S Bale
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - L B Kratchman
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - A Zorn
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - A Patterson
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - E S Kim
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - T A Petrie
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - E L Wiellette
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - C Williams
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - B C Isenberg
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
| | - J L Charest
- Draper, 555 Technology Square, Cambridge, MA 02139, USA.
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26
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Zhang X, Xue C, Li J, Zhang J, Tan K, Jiang X, Zheng H, Dong H, Yu Y, Hu Z, Cui H. [Establishment of animal models of epidermal growth factor receptor inhibitor-related rashes]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:352-357. [PMID: 33849825 DOI: 10.12122/j.issn.1673-4254.2021.03.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To establish animal models epidermal growth factor receptor inhibitor-related skin rashes using cetuximab, gefitinib or erlotinib. OBJECTIVE Female SCID mice were randomly divided into blank control group and high-, moderate-, and low-dose cetuximab groups. The mice in control group received intraperitoneal injection of saline, and those in the 3 cetuximab groups were injected with 80, 40, and 20 mg/kg cetuximab (3 times a week for 4 weeks), respectively. The general skin appearance and skin pathologies of the mice were observed. Female BN rats were randomly divided into blank group, ovalbumin group, gefitinib group and erlotinib group, and in the latter 3 groups, the rats were given ovalbumin (1 mg), gefitinib (37.5 mg/kg), and erlotinib (23.5 mg/kg) by lavage once daily for 45 days, respectively. Skin pathologies of the rats were observed, and serum levels of TNF-α, IL-6 and other inflammatory factors were detected using ELISA. OBJECTIVE Intraperitoneal injection of cetuximab did not induce typical skin rashes, scabs or obvious skin inflammation in the mice. In female BN rats, lavage of gefitinib caused obvious skin rashes, scabs and exudation, and obvious inflammatory cell infiltration, keratinosis, spinous layer release and epidermal thickening were observed in the skin. No obvious skin inflammation were observed in the rats in the control, ovalbumin or erlotinib groups. While IgE (P=0.061) and TNF-α concentrations (P=0.057) did not differ significantly among the groups, serum levels of IL-6 was significantly higher in gefitinib group than in the blank control group (P=0.016) but similar between erlotinib group and the blank group (P=0.910). OBJECTIVE Intraperitoneal injection of cetuximab can not induce epidermal growth factor receptor inhibitor-related skin rashes in SCID mice. Lavage of gefitinib, but not erlotinib, can be used to establish models of epidermal growth factor receptor inhibitor-related rashes in BN rats.
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Affiliation(s)
- X Zhang
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - C Xue
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - J Li
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - J Zhang
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - K Tan
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - X Jiang
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - H Zheng
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - H Dong
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Y Yu
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Z Hu
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - H Cui
- Department of Integrative Oncology, China-Japan Friendship Hospital, National Center for Respiratory Medicine, Beijing 100029, China
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Arrazola JM, Bergholm V, Brádler K, Bromley TR, Collins MJ, Dhand I, Fumagalli A, Gerrits T, Goussev A, Helt LG, Hundal J, Isacsson T, Israel RB, Izaac J, Jahangiri S, Janik R, Killoran N, Kumar SP, Lavoie J, Lita AE, Mahler DH, Menotti M, Morrison B, Nam SW, Neuhaus L, Qi HY, Quesada N, Repingon A, Sabapathy KK, Schuld M, Su D, Swinarton J, Száva A, Tan K, Tan P, Vaidya VD, Vernon Z, Zabaneh Z, Zhang Y. Quantum circuits with many photons on a programmable nanophotonic chip. Nature 2021; 591:54-60. [PMID: 33658692 PMCID: PMC11008968 DOI: 10.1038/s41586-021-03202-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 01/04/2021] [Indexed: 01/31/2023]
Abstract
Growing interest in quantum computing for practical applications has led to a surge in the availability of programmable machines for executing quantum algorithms1,2. Present-day photonic quantum computers3-7 have been limited either to non-deterministic operation, low photon numbers and rates, or fixed random gate sequences. Here we introduce a full-stack hardware-software system for executing many-photon quantum circuit operations using integrated nanophotonics: a programmable chip, operating at room temperature and interfaced with a fully automated control system. The system enables remote users to execute quantum algorithms that require up to eight modes of strongly squeezed vacuum initialized as two-mode squeezed states in single temporal modes, a fully general and programmable four-mode interferometer, and photon number-resolving readout on all outputs. Detection of multi-photon events with photon numbers and rates exceeding any previous programmable quantum optical demonstration is made possible by strong squeezing and high sampling rates. We verify the non-classicality of the device output, and use the platform to carry out proof-of-principle demonstrations of three quantum algorithms: Gaussian boson sampling, molecular vibronic spectra and graph similarity8. These demonstrations validate the platform as a launchpad for scaling photonic technologies for quantum information processing.
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Affiliation(s)
| | | | | | | | | | - I Dhand
- Xanadu, Toronto, Ontario, Canada
| | | | - T Gerrits
- National Institute of Standards and Technology, Boulder, CO, USA
| | | | - L G Helt
- Xanadu, Toronto, Ontario, Canada
| | - J Hundal
- Xanadu, Toronto, Ontario, Canada
| | | | | | - J Izaac
- Xanadu, Toronto, Ontario, Canada
| | | | - R Janik
- Xanadu, Toronto, Ontario, Canada
| | | | | | - J Lavoie
- Xanadu, Toronto, Ontario, Canada
| | - A E Lita
- National Institute of Standards and Technology, Boulder, CO, USA
| | | | | | | | - S W Nam
- National Institute of Standards and Technology, Boulder, CO, USA
| | | | - H Y Qi
- Xanadu, Toronto, Ontario, Canada
| | | | | | | | - M Schuld
- Xanadu, Toronto, Ontario, Canada
| | - D Su
- Xanadu, Toronto, Ontario, Canada
| | | | - A Száva
- Xanadu, Toronto, Ontario, Canada
| | - K Tan
- Xanadu, Toronto, Ontario, Canada
| | - P Tan
- Xanadu, Toronto, Ontario, Canada
| | | | - Z Vernon
- Xanadu, Toronto, Ontario, Canada.
| | | | - Y Zhang
- Xanadu, Toronto, Ontario, Canada
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Hu Z, Cui H, Tan K, Lee J. 29P Non-diploidy related prognostic molecular signature (NPMS) predict an “immunologically hot” phenotype in squamous cell lung cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.01.043] [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: 11/27/2022] Open
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29
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Sedaghat-Hamedani F, Trebing J, Kindermann A, Kayvanpour E, Tan K, Preussler S, Sluka S, Gi W, Dieterich C, Weitmann K, Eschenhagen T, Hoffmann W, Katus H, Meder B. The clinical atlas of cardiomyopathies: data from the prospective DZHK TORCH study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Cardiomyopathies (CMPs) are leading causes of heart failure (HF) and sudden cardiac death (SCD). Comparative data of the multiple cardiomyopathy forms are largely missing. The TranslatiOnal Registry for CardiomyopatHies (TORCH) is the largest prospective multicentre CMP registry world-wide. Enrolled patients are comprehensively phenotyped by clinical examinations, state-of-the-art imaging, and molecular investigations. In this study, we present the baseline and 1-year follow-up data.
Methods
TORCH is a national, prospective, multicentre registry within the German Centre for Cardiovascular Research (DZHK) and includes 2300 patients with non-ischemic (primary and secondary) CMP from 20 centres. The minimum follow up was one year. The DZHK-wide harmonization of datasets and SOPs ensure a high level of data quality and comparability across different CMP forms.
Results
Dilated cardiomyopathy (DCM) has the highest prevalence with 64% of all enrolled patients, followed by hypertrophic cardiomyopathy (HCM) with 16%. At baseline, patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) were treated more often with ICD implantation and showed high rates of adequate ICD therapies (65.8%, p<0.05 and 47.8%, p<0.05, respectively). The prevalence of stroke or transient ischemic attack (TIA) was in multivariate analysis significantly higher (p<0.05) in left ventricular non-compaction cardiomyopathy (LVNC, 14.9%), while atrial fibrillation was lower than in other cardiomyopathy forms. Patients with amyloidosis had the worst outcome (HR: 6; 95% CI: 2.5–14.5, P<0.05) with annual mortality of >15% and 12% receiving heart transplantation. In DCM, reverse remodelling with improvement of functional parameters and biomarkers was more often observed in idiopathic and inflammatory cases compared to familial ones. HCM patients had the most favourable outcome.
Conclusion and outlook
TORCH is the largest prospective study focusing on CMPs. We provided for the first time prospectively the clinical data of patients with diverse cardiomyopathies with outcome. Furthermore, comparing the different CMP forms on the clinical and molecular level will be an important step to enable translational research projects.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): German Centre for Cardiovascular Research (DZHK)
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Affiliation(s)
| | - J Trebing
- University Hospital of Heidelberg, Heidelberg, Germany
| | - A Kindermann
- University Hospital of Heidelberg, Heidelberg, Germany
| | - E Kayvanpour
- University Hospital of Heidelberg, Heidelberg, Germany
| | - K Tan
- University Hospital of Heidelberg, Heidelberg, Germany
| | - S Preussler
- University of Heidelberg, Institute of Medical Biometry and Informatics, Heidelberg, Germany
| | - S Sluka
- University of Greifswald, Greifswald, Germany
| | - W.T Gi
- University Hospital of Heidelberg, Heidelberg, Germany
| | - C Dieterich
- University Hospital of Heidelberg, Heidelberg, Germany
| | - K Weitmann
- University of Greifswald, Greifswald, Germany
| | - T Eschenhagen
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - W Hoffmann
- University of Greifswald, Greifswald, Germany
| | - H.A Katus
- University Hospital of Heidelberg, Heidelberg, Germany
| | - B Meder
- University Hospital of Heidelberg, Heidelberg, Germany
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Peng Y, Zhang N, Li WJ, Tan K, Zhou Y, She C, Chen HN. Correlations of changes in inflammatory factors, glucose and lipid metabolism indicators and adiponectin with alterations in intestinal flora in rats with coronary heart disease. Eur Rev Med Pharmacol Sci 2020; 24:10118-10125. [PMID: 33090419 DOI: 10.26355/eurrev_202010_23231] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the correlations of changes in inflammatory factors, glucose and lipid metabolism indicators and adiponectin with alterations in intestinal flora in rats with coronary heart disease. MATERIALS AND METHODS A total of 30 male specific pathogen-free rats were randomly assigned into two groups, including: blank group (n=15) and coronary heart disease group (n=15). The rats in the coronary heart disease group were given high-fat diets and pituitrin to establish the model of coronary heart disease. Meanwhile, rats in the blank group were administered with an equal volume of double-distilled water. The alterations in the intestinal flora of rats were detected in the two groups, respectively. In addition, the changes in the levels of inflammatory factors, glucose and lipid metabolism indicators, adiponectin, creatine kinase (CK) and its isoenzyme, as well as troponin, were also examined. RESULTS Statistically, significant differences in the levels of glucose and lipid metabolism indicators low-density lipoprotein (LDL) (p=0.040), total cholesterol (TC) (p=0.039), high-density lipoprotein (HDL) (p=0.044), triglyceride (TG) (p=0.000) and blood glucose (p=0.046) were observed between the rats in the coronary heart disease group and blank group. The content of all the glucose and lipid metabolism indicators (except HDL) in coronary heart disease group was significantly higher than the blank group (p<0.05). The rats in the coronary heart disease group had evidently higher levels of CK (p=0.000) and its isoenzyme (p=0.019), as well as troponin (p=0.021), than those in the blank group. The level of serum adiponectin in rats in coronary heart disease group was distinctly lower than that in the blank group, showing statistically significant differences (p<0.05). Besides, the levels of the inflammatory factors interleukin (IL)-2 (p=0.011), transforming growth factor (TGF)-β (p=0.048), tumor necrosis factor-α (TNF-α) (p=0.025) and IL-6 (p=0.038) in rats in the coronary heart disease group were dramatically higher than those in blank group. Rats in coronary heart disease group had remarkably more Actinobacteria, Desulfovibrio, Aristipus and Escherichia coli in the intestine. Meanwhile, the abundance of Flavobacterium, Burkhofer and some probiotics increased significantly in the intestine of rats in blank group (p<0.05). The changes in the abundance of Actinobacteria, Desulfovibrio, Aristipus and Escherichia coli in the intestine of rats were probably correlated with increased levels of glucose and lipid metabolism indicators, inflammatory factors and adiponectin in coronary heart disease group. Moreover, the abundance of intestinal probiotics such as Bifidobacterium and Lactobacillus in rats in coronary heart disease group was notably lower than that in blank group (p<0.05). The decline in the abundance of such intestinal probiotics as Bifidobacterium and Lactobacillus was correlated with the changes in the levels of glucose and lipid metabolism indicators, inflammatory factors and adiponectin. In addition, decreased levels of probiotics weakened normal physiological functions of the intestine and promoted disease progression. CONCLUSIONS Inflammatory factors, glucose and lipid metabolism indicators and adiponectin have evident changes in rats with coronary heart disease, which may be correlated with the alterations in the intestinal flora.
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Affiliation(s)
- Y Peng
- Department of Geriatric, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.
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Vaidya VD, Morrison B, Helt LG, Shahrokshahi R, Mahler DH, Collins MJ, Tan K, Lavoie J, Repingon A, Menotti M, Quesada N, Pooser RC, Lita AE, Gerrits T, Nam SW, Vernon Z. Broadband quadrature-squeezed vacuum and nonclassical photon number correlations from a nanophotonic device. Sci Adv 2020; 6:6/39/eaba9186. [PMID: 32967824 PMCID: PMC7531882 DOI: 10.1126/sciadv.aba9186] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 08/06/2020] [Indexed: 05/27/2023]
Abstract
We report demonstrations of both quadrature-squeezed vacuum and photon number difference squeezing generated in an integrated nanophotonic device. Squeezed light is generated via strongly driven spontaneous four-wave mixing below threshold in silicon nitride microring resonators. The generated light is characterized with both homodyne detection and direct measurements of photon statistics using photon number-resolving transition-edge sensors. We measure 1.0(1) decibels of broadband quadrature squeezing (~4 decibels inferred on-chip) and 1.5(3) decibels of photon number difference squeezing (~7 decibels inferred on-chip). Nearly single temporal mode operation is achieved, with measured raw unheralded second-order correlations g (2) as high as 1.95(1). Multiphoton events of over 10 photons are directly detected with rates exceeding any previous quantum optical demonstration using integrated nanophotonics. These results will have an enabling impact on scaling continuous variable quantum technology.
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Affiliation(s)
| | | | - L G Helt
- Xanadu, Toronto, ON M5G 2C8, Canada
| | | | | | | | - K Tan
- Xanadu, Toronto, ON M5G 2C8, Canada
| | - J Lavoie
- Xanadu, Toronto, ON M5G 2C8, Canada
| | | | | | | | - R C Pooser
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - A E Lita
- National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA
| | - T Gerrits
- National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA
| | - S W Nam
- National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA
| | - Z Vernon
- Xanadu, Toronto, ON M5G 2C8, Canada.
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Goh GX, Tan K, Ang BSP, Wang LF, Tchoyoson Lim CC. Neuroimaging in Zoonotic Outbreaks Affecting the Central Nervous System: Are We Fighting the Last War? AJNR Am J Neuroradiol 2020; 41:1760-1767. [PMID: 32819907 DOI: 10.3174/ajnr.a6727] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/15/2020] [Indexed: 12/24/2022]
Abstract
When preparing for the coronavirus disease 2019 pandemic and its effects on the CNS, radiologists should be familiar with neuroimaging appearances in past zoonotic infectious disease outbreaks. Organisms that have crossed the species barrier from animals to humans include viruses such as Hendra, Nipah, Severe Acute Respiratory Syndrome, and influenza, as well as bacteria and others. Brain CT and MR imaging findings have included cortical abnormalities, microinfarction in the white matter, large-vessel occlusion, and features of meningitis. In particular, the high sensitivity of diffusion-weighted MR imaging in detecting intracranial abnormalities has been helpful in outbreaks. Although the coronaviruses causing the previous Severe Acute Respiratory Syndrome outbreak and the current coronavirus disease 19 pandemic are related, it is important to be aware of their similarities as well as potential differences. This review describes the neuroimaging appearances of selected zoonotic outbreaks so that neuroradiologists can better understand the current pandemic and potential future outbreaks.
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Affiliation(s)
- G X Goh
- From the Emerging Infectious Diseases Programme (G.X.G., L.-F.W.), Duke-NUS Medical School, Singapore
| | - K Tan
- Departments of Neurology (K.T.)
| | - B S P Ang
- Department of Infectious Diseases and Infection Prevention and Control (B.S.P.A.), Tan Tock Seng Hospital, Singapore
| | - L-F Wang
- From the Emerging Infectious Diseases Programme (G.X.G., L.-F.W.), Duke-NUS Medical School, Singapore
| | - C C Tchoyoson Lim
- Neuroradiology (C.C.T.L.), National Neuroscience Institute and Duke-NUS Medical School, Singapore
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Li JJ, Liu HH, Wu NQ, Yeo KK, Tan K, Ako J, Krittayaphong R, Tan RS, Aylward PE, Baek SH, Dalal J, Fong AYY, Li YH, O'Brien RC, Lim TSE, Koh SYN, Scherer DJ, Tada H, Kang V, Butters J, Nicholls SJ. Statin intolerance: an updated, narrative review mainly focusing on muscle adverse effects. Expert Opin Drug Metab Toxicol 2020; 16:837-851. [PMID: 32729743 DOI: 10.1080/17425255.2020.1802426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Statins have been established as the standard of care for dyslipidemia and preventing cardiovascular diseases while posing few safety concerns. However, misconceptions about statin intolerance lead to their underuse, indicating a need to improve the understanding of the safety of this treatment. AREAS COVERED We searched PubMed and reviewed literatures related to statin intolerance published between February 2015 and February 2020. Important large-scale or landmark studies published before 2015 were also cited as key evidence. EXPERT OPINION Optimal lowering of low-density lipoprotein cholesterol with statins substantially reduces the risk of cardiovascular events. Muscle adverse events (AEs) were the most frequently reported AEs by statin users in clinical practice, but they usually occurred at a similar rate with statins and placebo in randomized controlled trials and had a spurious causal relationship with statin treatment. We proposed a rigorous definition for identifying true statin intolerance and present the criteria for defining different forms of muscle AEs and an algorithm for their management. True statin intolerance is uncommon, and every effort should be made to exclude false statin intolerance and ensure optimal use of statins. For the management of statin intolerance, statin-based approaches should be prioritized over non-statin approaches.
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Affiliation(s)
- Jian-Jun Li
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College , 100037, Beijing, China
| | - Hui-Hui Liu
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College , 100037, Beijing, China
| | - Na-Qiong Wu
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College , 100037, Beijing, China
| | - Khung Keong Yeo
- Department of Cardiology, National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences , Singapore
| | - Kathryn Tan
- Department of Medicine, University of Hong Kong , Hong Kong, China
| | - Junya Ako
- Department of Cardiovascular Medicine, Kitasato University , Sagamihara, Japan
| | - Rungroj Krittayaphong
- Division of Cardiology, Department of Medicine, Siriraj Hospital, Mahidol University , Bangkok, Thailand
| | - Ru San Tan
- Department of Cardiology, National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences , Singapore
| | - Philip E Aylward
- South Australian Health and Medical Research Institute and Flinders University , Adelaide, Australia
| | - Sang Hong Baek
- Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea , Seoul, Korea
| | - Jamshed Dalal
- Centre for Cardiac Sciences, Kokilaben Dhirubhai Ambani Hospital , Mumbai, India
| | - Alan Yean Yip Fong
- Department of Cardiology, Sarawak Heart Centre; and Clinical Research Centre, Sarawak General Hospital , Kuching, Malaysia
| | - Yi-Heng Li
- Division of Cardiology, Department of Internal Medicine, National Cheng Kung University College of Medicine and Hospital , Tainan, Taiwan
| | - Richard C O'Brien
- Department of Endocrinology, Austin Health, University of Melbourne , Melbourne, Australia
| | - Tien Siang Eric Lim
- Department of Cardiology, National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences , Singapore
| | - Si Ya Natalie Koh
- Department of Cardiology, National Heart Centre and SingHealth Duke-NUS Cardiovascular Sciences , Singapore
| | - Daniel J Scherer
- South Australian Health and Medical Research Institute, University of Adelaide , Adelaide, South Australia, Australia
| | - Hayato Tada
- Department of Cardiovascular and Internal Medicine, Kanazawa University Graduate School of Medicine , Kanazawa, Japan
| | | | - Julie Butters
- Monash Cardiovascular Research Centre, Victorian Heart Institute, Monash University , Melbourne, Australia
| | - Stephen J Nicholls
- Monash Cardiovascular Research Centre, Victorian Heart Institute, Monash University , Melbourne, Australia
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Mantripragada V, Tan K, Vasavada S, Bova W, Muschler G. Morphological characterization of heterogeneous progenitor and non-progenitor populations resident in human articular cartilage using time-lapse imaging- implications for cartilage cellular therapy approaches. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.165] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Diaz A, Tan K, He H, Xu H, Cueto I, Pavel A, Krueger J, Guttman‐Yassky E. Keloid lesions show increased
IL
‐4/
IL
‐13 signaling and respond to Th2‐targeting dupilumab therapy. J Eur Acad Dermatol Venereol 2020; 34:e161-e164. [DOI: 10.1111/jdv.16097] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- A. Diaz
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
- Ponce Health Sciences University School of Medicine Ponce PR USA
| | - K. Tan
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
| | - H. He
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
| | - H. Xu
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
| | - I. Cueto
- Laboratory for Investigative Dermatology The Rockefeller University New York NY USA
| | - A.B. Pavel
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
| | - J.G. Krueger
- Laboratory for Investigative Dermatology The Rockefeller University New York NY USA
| | - E. Guttman‐Yassky
- Department of Dermatology and Laboratory of Inflammatory Skin Diseases Icahn School of Medicine at Mount Sinai New York NY USA
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Patel N, Tai E, Bailey S, Mirrahimi A, Mafeld S, Beecroft J, Tan K, Annamalai G. 3:36 PM Abstract No. 222 Percutaneous radiologic gastrostomy with and without gastropexy: a prospective comparison. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.264] [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] Open
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Jumaa K, Mafeld S, Tan K, Mok K, De Perrot M. 3:00 PM Abstract No. 255 Balloon pulmonary artery angioplasty for the treatment of chronic thromboembolic pulmonary hypertension: safety and outcomes. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.302] [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] Open
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Tan K, Menotti M, Vernon Z, Sipe JE, Liscidini M, Morrison B. Stimulated four-wave mixing in linearly uncoupled resonators. Opt Lett 2020; 45:873-876. [PMID: 32058493 DOI: 10.1364/ol.381563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
We experimentally demonstrate stimulated four-wave mixing in two linearly uncoupled integrated $ {{\rm Si}_3}{{\rm N}_4} $Si3N4 micro-resonators. In our structure, the resonance combs of each resonator can be tuned independently, with the energy transfer from one resonator to the other occurring in the presence of a nonlinear interaction. This method allows flexible and efficient on-chip control of the nonlinear interaction, and is readily applicable to other third-order nonlinear phenomena.
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Tan K, Peng YT, Guo P. MiR-29a promotes osteogenic differentiation of mesenchymal stem cells via targeting HDAC4. Eur Rev Med Pharmacol Sci 2020; 22:3318-3326. [PMID: 29917181 DOI: 10.26355/eurrev_201806_15151] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role of miR-29a in regulating the differentiation mesenchymal stem cells into osteoblasts. MATERIALS AND METHODS For the first step, the changes of expression of miR-29a during the process of mesenchymal stem cells (MSCs) differentiation into osteoblast were detected. Then, we infected the MSCs with mimics or inhibitors of miR-29a to explore the roles of miR-29a in the differentiation. Further, the prediction and verification of the possible target genes of miR-29a were achieved by bioinformatics analysis and luciferase reporter assay. RESULTS MiR-29a was up-regulated during the process of MSCs differentiation into osteoblasts. Overexpression or inhibition of miR-29a using mimics or inhibitors had no significant effect on cell proliferation. Furthermore, the differentiation was enhanced when miR-29a was artificially overexpressed in vitro, whereas silencing of miR-29a attenuated this process. It was evidenced by alkaline phosphatase (ALP) staining, matrix mineralization, and increased expression of osteoblast-specific genes. Furthermore, we determined that the gene HDAC4 might be a direct target of miR-29a. CONCLUSIONS In the current study, miR-29a promotes osteogenesis via suppressing HDAC4, indicating that targeting miR-29a may be feasible in the management of osteoporosis.
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Affiliation(s)
- K Tan
- Department of Neurosurgery, Beijing Chao-Yang Hospital, Beijing, P.R. China.
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Sedaghat-Hamedani F, Trebing J, Tan K, Kayvnapour E, Sluka S, Gi WT, Amr A, Weitmann K, Hoffmann W, Katus HA, Meder B. P5547First results of TranslatiOnal Registry for CardiomyopatHies (TORCH). Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
The cardiomyopathies (CMPs) are a diverse group of cardiac disorders and leading cause of heart failure (HF) and sudden cardiac death (SCD). Clinical courses of CMPs vary considerably even between patients with the same disease entity. The TranslatiOnal Registry for CardiomyopatHies (TORCH) is a comprehensive CMP registry that aims to provide a database and biomaterial bank for basic science and clinical research in this field. The long-term objective of this registry is to increase the understanding of disease pathomechanisms on the way to a better risk stratification as well as identification of new diagnostic and therapeutic approaches in CMP.
Methods
TORCH is a national, prospective, and multicentre registry within the German Centre for Cardiovascular Research (DZHK), which includes 2300 consecutive patients with non-ischemic (primary and secondary) CMP in 20 centres. The minimum follow up time is one year. The DZHK-wide harmonization of datasets and eCRFs (electronic case report form) were performed to ensure a high level of data quality across different study centres.
Results
Seventy percent of the enrolled patients are male. Idiopathic/familial dilated cardiomyopathy (DCM) holds the highest prevalence with 54%, followed by inflammatory DCM/myocarditis with a prevalence of 24%. Hypertrophic cardiomyopathy (HCM) is the third-most prevalent CMP in this registry (16%). Infrequent CMPs such as left ventricular non-compaction (LVNC), arrhythmogenic right ventricular cardiomyopathies (ARVC) are also represented in TORCH with a prevalence of 4% and 2% respectively. Major clinical findings are registered in TORCH. Atrial fibrillation was present with a high prevalence among all CMPs (22%-35%). The highest prevalence of stroke or TIA at baseline was reported in patients with LVNC (15.1%) and the lowest in those with amyloidosis (3.3%). Patients with ARVC had the highest number of ICD implantation and adequate ICD therapy (56.7%, p<0.05; 47.1%, p<0.05). Preliminary data analysis showed higher frequency of therapy refractory heart failure symptoms and worse outcome in patients with familial DCM in comparison to those with inflammatory or idiopathic DCM.
Conclusion and outlook
TORCH represents one of the largest cardiomyopathy registries in Europe. The patients are comprehensively phenotyped through clinical examinations, state-of-the-art imaging modalities, as well as molecular, genetic, and epigenetic investigations. This registry can help researchers design further studies investigating new diagnostic tools or therapeutic strategies in CMPs.
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Affiliation(s)
| | - J Trebing
- University Hospital of Heidelberg, Heidelberg, Germany
| | - K Tan
- University Hospital of Heidelberg, Heidelberg, Germany
| | - E Kayvnapour
- University Hospital of Heidelberg, Heidelberg, Germany
| | - S Sluka
- University of Greifswald, Greifswald, Germany
| | - W T Gi
- University Hospital of Heidelberg, Heidelberg, Germany
| | - A Amr
- University Hospital of Heidelberg, Heidelberg, Germany
| | - K Weitmann
- University of Greifswald, Greifswald, Germany
| | - W Hoffmann
- University of Greifswald, Greifswald, Germany
| | - H A Katus
- University Hospital of Heidelberg, Heidelberg, Germany
| | - B Meder
- University Hospital of Heidelberg, Heidelberg, Germany
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Tan K, Chow WS, Leung J, Ho A, Ozaki R, Kam G, Li J, Choi CH, Tsang MW, Chan N, Lee KK, Chan KW. Clinical considerations when adding a sodium-glucose co-transporter-2 inhibitor to insulin therapy in patients with diabetes mellitus. Hong Kong Med J 2019; 25:312-319. [PMID: 31416990 DOI: 10.12809/hkmj197802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- K Tan
- Department of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - W S Chow
- Department of Medicine, Queen Mary Hospital, Pokfulam, Hong Kong
| | - J Leung
- Department of Integrated Medical Service, Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong
| | - A Ho
- Department of Medicine and Geriatrics, Tuen Mun Hospital, Tuen Mun, Hong Kong
| | - R Ozaki
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - G Kam
- Department of Medicine and Geriatrics, United Christian Hospital, Kwun Tong, Hong Kong
| | - J Li
- Department of Medicine, Yan Chai Hospital, Tsuen Wan, Hong Kong
| | - C H Choi
- Department of Medicine, Queen Elizabeth Hospital, Jordan, Hong Kong
| | - M W Tsang
- Specialist in Endocrinology, Private Practice
| | - N Chan
- Specialist in Endocrinology, Private Practice
| | - K K Lee
- Department of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - K W Chan
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Laichikok, Hong Kong
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Chu C, Sheen Y, Tan K, Tse K. 815 Genetic alterations in primary melanoma in Taiwan. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.891] [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: 11/24/2022]
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Abstract
Objective: To investigate the clinical characteristics of pertussis-associated pneumonia and analyze it's risk factors. Methods: Clinical data were taken from Shenzhen Children's Hospital with Bordetella pertussis infection and confirmed by culture or real-time polymerase chain reaction (PCR) of nasopharyngeal secretion from October 2013 to December 2015. Patients were divided into two groups, those with radiologically confirmed pneumonia in the course of their disease and those with not. Clinical data were retrospectively analyzed and compared. T test, Rank sum test or chi square test were used for comparison between groups. Risk factors were analyzed by unconditional Logistic regression analysis. Results: A total of 501 children hospitalized with Bordetella pertussis infection were included. Among them, 309 patients were diagnosed with pneumonia. The median age was 3 (2, 6) months. Symptoms were paroxysmal cough (n=252, 81.6%), tachypnea (n=69, 22.3%), and cyanosis (n=105, 34.0%). The time from onset of cough to radiologically confirmed pneumonia was between 1 and 66 days with a median of 9 (5.5, 15.0) days. The most common pathogen of coinfection was respiratory syncytial virus (RSV)(20 cases). Macrolides were used in 306 cases for (8.2±3.6) days. All cases showed significant improvement. There were more male children (62.1% (192/309) vs. 50.3% (95/189) , χ(2)=6.768, P=0.009), and more instances of comorbidities (13.3% (41/309) vs.5.8% (11/189) , χ(2)=6.957, P=0.008) in the pneumonia group than in the other. The age was younger (3 (2,6) vs.4 (2,6) months, Z=32.91, P=0.000) in pneumonia group than in the other. Male sex, younger age, and underlying disease were independent risk factors for pertussis-associated pneumonia (OR=1.648, 1.486, 2.695, P=0.008, 0.036, 0.005). Conclusions: Pneumonia, as a complication of pertussis, is very easy to see in hospitalized children. The duration of hospitalization is extensive. It is more likely to happen in children who are male, young, and having underlying diseases. Pneumonia is easy to occur in the first 2 weeks of the course of disease.
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Affiliation(s)
- M Xu
- Zunyi Medical University, Zunyi 563003, China
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de Perrot M, McRae K, Donahoe L, McInnis M, Thenganatt J, Bykova A, Tan K, Moric J, Mak S, Granton J. Outcome after Pulmonary Endarterectomy for Segmental Chronic Thromboembolic Pulmonary Hypertension. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.306] [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: 10/27/2022] Open
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Sallis A, Porter L, Tan K, Howard R, Brown L, Jones A, Ells L, Adamson A, Taylor R, Vlaev I, Chadborn T. Improving child weight management uptake through enhanced National Child Measurement Programme parental feedback letters: A randomised controlled trial. Prev Med 2019; 121:128-135. [PMID: 30771362 DOI: 10.1016/j.ypmed.2019.01.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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] [Received: 09/24/2018] [Revised: 01/15/2019] [Accepted: 01/29/2019] [Indexed: 01/20/2023]
Abstract
This single-blind, pragmatic, cluster randomised controlled trial aims to investigate uptake of children's weight management services in response to enhanced National Child Measurement Programme (NCMP) letters providing weight status feedback to parents in three English counties in 2015. Parents of 2642 overweight or very overweight (obese) children aged 10-11 years received an intervention or control letter informing them of their child's weight status. Intervention letters included (i) a visual tool to help weight status recognition, (ii) a social norms statement, and for very overweight children, (iii) a prepopulated booking form for weight management services. The primary outcome was weight management service enrolment. Additional outcome measures included attendance at and contact made with weight management services, and a number of self-report variables. A small effect was observed, with intervention parents being significantly more likely to enrol their children in weight management services (4.33% of Intervention group) than control parents (2.19% of Control group) in both unadjusted (OR = 2.08, p = .008) and adjusted analyses (AOR = 2.48, p = .001). A similar picture emerged for contact with services (4.80% Intervention vs. 2.41% Control; OR = 2.10, p = .003; AOR = 2.46, p < .001) and attendance at services, although group differences in the latter measure were not significant after corrections for multiple comparisons (1.89% Intervention vs. 1.02% Control; AOR = 2.11, p = .047). No effects were found on self-report variables. Theoretically informed weight status feedback letters appear to be an effective strategy to improve enrolment in paediatric weight management services.
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Affiliation(s)
- A Sallis
- PHE Behavioural Insights Team (PHE BI), Research, Translation & Innovation Division, 6th Floor, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland.
| | - L Porter
- PHE Behavioural Insights Team (PHE BI), Research, Translation & Innovation Division, 6th Floor, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland; School of Psychology, University of Exeter, Washington Singer Laboratories, Perry Road, Exeter EX4 4QG, United Kingdom of Great Britain and Northern Ireland
| | - K Tan
- PHE Behavioural Insights Team (PHE BI), Research, Translation & Innovation Division, 6th Floor, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland; HM Courts and Tribunals Services, 6.02, 102 Petty France, London SW1H 9AJ, United Kingdom of Great Britain and Northern Ireland
| | - R Howard
- Leicestershire County Council, County Hall, Glenfield, Leicestershire LE3 8TB, United Kingdom of Great Britain and Northern Ireland
| | - L Brown
- PHE Behavioural Insights Team (PHE BI), Research, Translation & Innovation Division, 6th Floor, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland
| | - A Jones
- Human Nutrition Research Centre and Institute of Health & Society, Newcastle University, M1.51 William Leech Building, Framlington Place, Newcastle-Upon-Tyne NE2 4HH, United Kingdom of Great Britain and Northern Ireland
| | - L Ells
- School of Health and Social Care, Teesside University, Middlesbrough, TS1 3BA, United Kingdom of Great Britain and Northern Ireland
| | - A Adamson
- Human Nutrition Research Centre and Institute of Health & Society, Newcastle University, M1.51 William Leech Building, Framlington Place, Newcastle-Upon-Tyne NE2 4HH, United Kingdom of Great Britain and Northern Ireland
| | - R Taylor
- Health Intelligence Division, Public Health England, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland
| | - I Vlaev
- Warwick Business School, University of Warwick, Scarman Road, Coventry CV4 7AL, United Kingdom of Great Britain and Northern Ireland
| | - T Chadborn
- PHE Behavioural Insights Team (PHE BI), Research, Translation & Innovation Division, 6th Floor, Wellington House, 133-155 Waterloo Road, London SE1 8UG, United Kingdom of Great Britain and Northern Ireland
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Kwan J, Chan T, Tai E, Tan K, Kwan J. 03:27 PM Abstract No. 26 Embolization of type II endoleaks via a percutaneous trans-abdominal direct sac puncture approach: a comparison of outcomes of embolizing the aneurysm sac only versus the aneurysm sac and branch vessels. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.064] [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: 10/27/2022] Open
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Yang F, Wang S, Qin H, Tan K, Sun QQ, Wang LX, Nie SS, Liu JN, Chen Y, Zhang M, Chen YY. [Frailty progress and related factors in the elderly living in community: a prospective study]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:186-190. [PMID: 30744270 DOI: 10.3760/cma.j.issn.0254-6450.2019.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To investigate frailty progress status and related factors in the elderly living in communities. Methods: A cohort of elderly people aged 65 and over in Pingyi community of Dujiangyan, Sichuan province, was established. Face-to-face questionnaire survey was conducted by trained interviewers. The frailty status, cognitive function, nutrition status and other functions of the subjects surveyed were evaluated at baseline survey and during follow-up. The socio-demographic and clinical characteristics of the subjects surveyed were assessed at baseline survey. Binary logistic regressions were used to identify factors associated with frailty progress. Results: A total of 653 elderly people were surveyed in January 2014, and 507 elderly people were followed up while 146 elderly people terminated further follow-up in January 2017. The prevalence rates of frailty and pre-frailty at baseline survey were 11.2% (n=57) and 26.2% (n=133), respectively. After 3 years, 205 subjects (40.4%) surveyed experienced frailty progress, 276 (54.5%) remained to be in frailty state at baseline survey, and 26 (5.1%) had improvement. Disability (OR=8.27, 95%CI: 1.62-42.26), visual problem (OR=2.02, 95%CI: 1.27-3.22), cognitive impairment (OR=1.94, 95%CI: 1.08-3.48), poor self-rated health (OR=1.89, 95%CI: 1.07-3.31), chronic pain (OR=1.57, 95%CI: 1.03-2.40) and older age (OR=1.12, 95%CI: 1.08-1.17) were independently associated with the progress of frailty. In contract, overweight was a protective factor (OR=0.54, 95%CI: 0.34-0.85). Conclusions: Frailty is a dynamic syndrome affected by several socio-demographic factors and geriatric factors. The results of the study can be used in the prevention of frailty progress in the elderly in communities.
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Affiliation(s)
- F Yang
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - S Wang
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Qin
- Internal Medicine Department, Pingyi Community Health Service Center in Dujiangyan, Dujiangyan 610000, China
| | - K Tan
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Q Q Sun
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L X Wang
- Geriatric Department, the Fifth People's Hospital of Chengdu, Chengdu 611130, China
| | - S S Nie
- General Medicine Department, the Affiliated Central Hospital of Qingdao University, Qingdao 266071, China
| | - J N Liu
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Chen
- Department of Palliative Medicine, the Fourth West China Teaching Hospital, Sichuan University, Chengdu 610041, China
| | - M Zhang
- Department of Elderly Endocrinology, Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Y Y Chen
- Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
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Menotti M, Morrison B, Tan K, Vernon Z, Sipe JE, Liscidini M. Nonlinear Coupling of Linearly Uncoupled Resonators. Phys Rev Lett 2019; 122:013904. [PMID: 31012691 DOI: 10.1103/physrevlett.122.013904] [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] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate a system composed of two resonators that are coupled solely through a nonlinear interaction, and where the linear properties of each resonator can be controlled locally. We show that this class of dynamical systems has peculiar properties with important consequences for the study of classical and quantum nonlinear optical phenomena. As an example we discuss the case of dual-pump spontaneous four-wave mixing.
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Affiliation(s)
- M Menotti
- Xanadu, 372 Richmond Street W, Toronto, Ontario M5V 1X6, Canada
| | - B Morrison
- Xanadu, 372 Richmond Street W, Toronto, Ontario M5V 1X6, Canada
| | - K Tan
- Xanadu, 372 Richmond Street W, Toronto, Ontario M5V 1X6, Canada
| | - Z Vernon
- Xanadu, 372 Richmond Street W, Toronto, Ontario M5V 1X6, Canada
| | - J E Sipe
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - M Liscidini
- Impact Centre, University of Toronto, 411-112 College Street, Toronto, Ontario M5G 1L6, Canada and Dipartimento di Fisica, Università degli studi di Pavia, Via Bassi 6, 27100 Pavia, Italy
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Malhotra R, Chei C, Allen J, Chan A, Tan K, Ma S, Wong C, Matchar D. FRAILTY ASSESSMENT MEASURE FOR THE ELDERLY (FAME): A FRAILTY MEASURE DEVELOPED IN AN ASIAN POPULATION. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2657] [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)
| | - C Chei
- Duke-NUS Medical School, Singapore
| | - J Allen
- Duke-NUS Medical School, Singapore
| | - A Chan
- Duke-NUS Medical School, Singapore
| | - K Tan
- Ministry of Health, Singapore
| | - S Ma
- Ministry of Health, Singapore
| | - C Wong
- Geriatric Education and Research Institute
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Tan K, Cheung CL, Yeung CY, Siu D, Leung J, Pang HK. Genetic screening for familial hypercholesterolaemia in Hong Kong. Hong Kong Med J 2018; 24 Suppl 3:7-10. [PMID: 29937437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Affiliation(s)
- K Tan
- Department of Medicine, The University of Hong Kong
| | - C L Cheung
- Department of Pharmacology and Pharmacy, The University of Hong Kong
| | - C Y Yeung
- Endocrine and Diabetes Centre, Hong Kong Sanatorium and Hospital
| | - D Siu
- Department of Medicine, The University of Hong Kong
| | - J Leung
- Department of Medicine, Ruttonjee Hospital
| | - H K Pang
- Department of Medicine, Pamela Youde Nethersole Eastern Hospital
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