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Whitcher TJ, Fauzi AD, Diao C, Chi X, Syahroni A, Asmara TC, Breese MBH, Castro Neto AH, Wee ATS, Majidi MA, Rusydi A. Reply to: Reassessing the existence of soft X-ray correlated plasmons. Nat Commun 2023; 14:6754. [PMID: 37875490 PMCID: PMC10597986 DOI: 10.1038/s41467-023-40652-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/01/2023] [Indexed: 10/26/2023] Open
Affiliation(s)
- T J Whitcher
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore.
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore.
- Centre for Advanced 2D Materials, National University of Singapore, 2 Science Drive 3, Singapore, 117546, Singapore.
| | - A D Fauzi
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - C Diao
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - X Chi
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - A Syahroni
- Department of Physics, University of Indonesia, Depok, 16424, Indonesia
| | - T C Asmara
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore
| | - M B H Breese
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - A H Castro Neto
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
- NUS Graduate School for Integrative Sciences and Engineering, Singapore, 117456, Singapore
| | - A T S Wee
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
- NUS Graduate School for Integrative Sciences and Engineering, Singapore, 117456, Singapore
| | - M A Majidi
- Department of Physics, University of Indonesia, Depok, 16424, Indonesia
| | - A Rusydi
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117576, Singapore.
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore.
- Centre for Advanced 2D Materials, National University of Singapore, 2 Science Drive 3, Singapore, 117546, Singapore.
- NUS Graduate School for Integrative Sciences and Engineering, Singapore, 117456, Singapore.
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Gu H, Kong W, Yin H, Diao C, Zheng Y, Meng Z. Association of age-related hearing loss with psychomotor speed and cognitive function among older adults: a cross-sectional cohort study. Chin Med J (Engl) 2023; 136:1888-1890. [PMID: 37341659 PMCID: PMC10406033 DOI: 10.1097/cm9.0000000000002224] [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: 10/14/2022] [Indexed: 06/22/2023] Open
Affiliation(s)
- Hailing Gu
- Department of Otolaryngology, Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Weili Kong
- Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Huilin Yin
- Department of Otolaryngology, Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Cong Diao
- Department of Otolaryngology, Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yun Zheng
- Department of Otolaryngology, Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhaoli Meng
- Department of Otolaryngology, Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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Wang X, Guo L, Tian R, Fei Y, Ji J, Diao C, Zuo L, Zeng Y, Guo Q, Chen K, Zheng Y. Hearing Aids Combined With Educational Counseling Versus Educational Counseling Alone for Tinnitus Treatment in Patients With Hearing Loss: A Longitudinal Follow-Up Study. J Speech Lang Hear Res 2023:1-13. [PMID: 37267442 DOI: 10.1044/2023_jslhr-22-00493] [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] [Indexed: 06/04/2023]
Abstract
PURPOSE The effect of hearing aids (HAs) and educational counseling (EC) or their combination on tinnitus is ambiguous. This study aimed to investigate whether the combined use of HAs and EC is more effective than EC alone on tinnitus relief. METHOD A total of 72 adults with chronic, bothersome tinnitus and coexisting sensorineural hearing loss completed at least 1-month and 3-month follow-up. After receiving EC and HA prescriptions, 21 participants selected to purchase HAs (i.e., the HA + EC group), whereas the remaining 51 refused to use HAs despite recommendations (i.e., the EC group). Tinnitus severity was measured by Tinnitus Handicap Inventory (THI), Tinnitus Evaluation Questionnaire (TEQ), and Visual Analog Scale (VAS) for loudness. The primary outcome measure was THI, and tinnitus relief was defined as a 20-point or more reduction in THI. A generalized linear mixed model was used to confirm that the heterogeneity in baseline characteristics between groups did not interfere with the results. RESULTS The THI, TEQ, and VAS scores decreased significantly after treatments, and both groups yielded a similar trend of reduction. There were no significant differences in the incidence of tinnitus relief and time-to-event curves between the two groups. In addition, the length of follow-up did not affect treatment effectiveness. CONCLUSION There was insufficient evidence to support the superiority of the combined use of HA and EC for tinnitus over EC with no device.
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Affiliation(s)
- Xunyi Wang
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Lanxin Guo
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Run Tian
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu
| | - Yingping Fei
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Jinfeng Ji
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Cong Diao
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Lin Zuo
- West China Medical School, Sichuan University, Chengdu
| | - Yuxiao Zeng
- West China Medical School, Sichuan University, Chengdu
| | - Qingxin Guo
- West China Medical School, Sichuan University, Chengdu
| | - Ke Chen
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
| | - Yun Zheng
- Hearing Center/Hearing & Speech Laboratory, Department of Otorhinolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu
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Gu H, Yao X, Diao C, Liu M, Kong W, Liu H, Zhao Y, Meng Z. Global cognitive function is associated with sex, educational level, occupation type, and speech recognition rate in older Chinese adults: a single-center, prospective, cross-sectional study. BMC Geriatr 2022; 22:947. [PMID: 36482356 PMCID: PMC9733133 DOI: 10.1186/s12877-022-03603-5] [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: 02/08/2022] [Accepted: 11/09/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The development of cognitive impairment may be delayed if its risk factors are identified and detected, if its developmental trend can be predicted, and if early intervention can be performed. This study primarily aimed to investigate the association between global cognitive function and hearing loss, educational level, and occupation type and to determine any differences in such associations according to sex among older Chinese adults. METHODS In this cross-sectional study, we prospectively recruited 219 individuals above 55 years old in an otolaryngology outpatient clinic who could write independently and had no severe vision impairment. Audiometric examinations included otoscopy, acoustic immittance, pure-tone audiometry, and speech audiometry for each ear. Cognitive function was evaluated by using the Chinese version of the Mini-Mental State Examination (MMSE). Multivariable linear regression analyses were performed to evaluate the relationship between variables and MMSE scores after adjusting for independent variables that were statistically significant in the univariable analyses. RESULTS We enrolled 219 individuals: 98 men (mean ± standard deviation age, 63.08 ± 6.64 years) and 121 women (62.64 ± 7.17 years). The overall MMSE scores of the normal hearing group and the mild, moderate, and severe-to-profound hearing loss groups were 24.00 (5.00), 24.00 (5.00), 23.00 (5.00), and 23.00 (13.00), respectively. MMSE scores were higher among participants with higher educational levels (p < 0.001) and were significantly correlated with occupation type (p < 0.001). MMSE scores were significantly higher in men than in women (p < 0.001). However, after the analysis of the five subdomains, significant differences were only observed for attention and calculation (p < 0.001) and language (p = 0.011). We further compared the distribution of educational levels between men and women by using the chi-square test; there was no significant difference in educational level between the sexes (p = 0.070). CONCLUSIONS We reported statistically significant relationships between global cognitive function and sex, educational level, and occupation type. Sex-specific strategies may be required to improve healthcare policies.
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Affiliation(s)
- Hailing Gu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Xinyi Yao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Cong Diao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Min Liu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Weili Kong
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Haotian Liu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Yu Zhao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Zhaoli Meng
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
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Zhu H, Li Z, Zhou Y, Zheng R, Diao C, Li K, Feng Q, Wang D. Neutrophil-lymphocyte ratio as a risk factor for osteoporotic vertebrae fractures and femoral neck fractures. Medicine (Baltimore) 2022; 101:e32125. [PMID: 36482639 PMCID: PMC9726278 DOI: 10.1097/md.0000000000032125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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] [Received: 09/16/2022] [Accepted: 11/10/2022] [Indexed: 12/13/2022] Open
Abstract
Fracture is associated with osteopenia after osteoporosis. Neutrophil-lymphocyte ratio (NLR) is common in inflammatory diseases. NLR can be used as an effective clinical tool to assess postmenopausal osteoporosis. The aim of this study is to further explore the relationship between elevated NLR and the severity of osteoporotic vertebrae fractures and femoral neck fracture based on magnetic resonance imaging (MRI). A total of 80 patients with osteoporotic vertebrae fractures, osteoporotic femoral neck fracture in Baoding Second Central Hospital from 2017 to 2020 were selected as the research objects. This study included a series of pretreatment factors, mainly including white blood cell count, red blood cell count, hemoglobin, and the general condition of the patients. Statistical methods included Pearson chi-square test, Spearman correlation test, logistic regression analysis and receiver operator characteristic (ROC) curve. According to Pearson chi-square test, Spearman correlation test, univariate/multivariate logistic regression analysis, the severity of osteoporotic vertebrae fractures, osteoporotic femoral neck fracture was significantly correlated with NLR (P < .001). NLR (odds ratio [OR] = 13.229, 95% CI: 4.167-41.998, P < .001) was a significant independent risk factor for osteoporotic vertebrae fractures, osteoporotic femoral neck fracture. receiver operator characteristic (ROC) curve was used to detect the specificity and sensitivity. The level of NLR has an important influence on the severity of osteoporotic vertebrae fractures and femoral neck fracture. The higher the level of NLR, the more serious the osteoporotic vertebrae fractures and femoral neck fracture.
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Affiliation(s)
- Hao Zhu
- Department of Orthopedics, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Zheng Li
- Department of Orthopedics, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Yizhai Zhou
- Department of Orthopedics, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Rugeng Zheng
- Department of Orthopedics, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Cong Diao
- Obstetrics Department, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Kepeng Li
- Department of Orthopedics, The Second Central Hospital of Baoding, Zhuozhou City, Hebei Province, PR China
| | - Qi Feng
- Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, PR China
| | - Donglai Wang
- Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, PR China
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Gu H, Diao C, Tang J, Yang B, Ji J, Zhou M, Meng Z. Minimal clinically important difference for the Mandarin version of the Tinnitus Questionnaire determined via anchor-based and distribution-based methods. Health Qual Life Outcomes 2022; 20:157. [PMID: 36451205 PMCID: PMC9710156 DOI: 10.1186/s12955-022-02072-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 11/22/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The previous study showed that the Mandarin Tinnitus Questionnaire (MTQ) has satisfactory reliability and validity. We have also completed the classification of the severity of tinnitus based on MTQ scores. In clinical studies, efficacy is often judged by whether results are statistically significant; however, statistical significance does not necessarily equate to clinical significance, whereas the minimum clinically important difference (MCID) of the scale does. In the following project, we will explore the MCID of the MTQ. METHODS We recruited participants aged 18 years and above who sought treatment for primary or secondary tinnitus at the Otorhinolaryngology Department of the Hearing Center of West China Hospital, Sichuan University from September 2020 to September 2021. The participants had to undergo the following four assessments of tinnitus severity: doctor evaluation, self-report, the MTQ, and the visual analog scale (VAS), all at baseline and at the follow-up. The MCIDs of the MTQ were established via anchor-based and distribution-based methods. The anchor method used the VAS and self-reported clinical impression as anchors and defined the treatment effectiveness by mean/median and receiver operating characteristic (ROC) curve, while methods of effect size (ES), standard error of measurement (SEM), and reliability change index (RCI) were used in distribution-based methods. RESULTS A total of 115 patients were investigated in this study, 57.4% of whom were women. The average age was 43.2 ± 13.20 years. The average MTQ and VAS scores at baseline were 31.3 ± 14.90 and 5.03 ± 2.24, respectively, while the average MTQ and VAS scores at follow-up were 15.9 ± 11.70 and 3.58 ± 2.48, respectively. Moreover, in terms of self-reported clinical impressions, 19 patients indicated that they were cured (16.5%), 24 that it was much better (20.9%), 63 that there was no change (54.8%), and 9 that it was much worse (7.8%). The MCIDs for the change in total MTQ ranged from 6.29 to 19.00, those for improvement from 1.09 to 22.75, and those for deterioration from 3.50 to 7.64. CONCLUSION We selected an absolute value of 7.5 as the MCID for the MTQ score. An increase in MTQ score more than 7.5 was considered aggravation of tinnitus, and a decrease in MTQ score more than 7.5 was considered a reduction in tinnitus.
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Affiliation(s)
- Hailing Gu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Cong Diao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Jiatong Tang
- grid.13291.380000 0001 0807 1581West China Hospital/West China Medical School, Sichuan University, Chengdu, Sichuan People’s Republic of China
| | - Bo Yang
- grid.13291.380000 0001 0807 1581West China Hospital/West China Medical School, Sichuan University, Chengdu, Sichuan People’s Republic of China
| | - Jinfeng Ji
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Mengyun Zhou
- grid.13291.380000 0001 0807 1581West China Hospital/West China Medical School, Sichuan University, Chengdu, Sichuan People’s Republic of China
| | - Zhaoli Meng
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
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Ong BL, Jayaraman K, Diao C, Whitcher TJ, Jain A, Hung H, Breese MBH, Tok ES, Rusydi A. Anomalous Ferromagnetism of quasiparticle doped holes in cuprate heterostructures revealed using resonant soft X-ray magnetic scattering. Nat Commun 2022; 13:4639. [PMID: 35941141 PMCID: PMC9360448 DOI: 10.1038/s41467-022-31885-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 07/04/2022] [Indexed: 11/09/2022] Open
Abstract
We report strong ferromagnetism of quasiparticle doped holes both within the ab-plane and along the c-axis of Cu-O planes in low-dimensional Au/d-La1.8Ba0.2CuO4/LaAlO3(001) heterostructures (d = 4, 8 and 12 unit-cells) using resonant soft X-ray and magnetic scattering together with X-ray magnetic circular dichroism. Interestingly, ferromagnetism is stronger at a hole doped peak and at an upper Hubbard band of O with spin-polarization degree as high as 40%, revealing strong ferromagnetism of Mottness. For in-ab-plane spin-polarizations, the spin of doped holes in O2p-Cu3d-O2p is a triplet state yielding strong ferromagnetism. For out-of-ab-plane spin-polarization, while the spins of doped holes in both O2p-O2p and Cu3d-Cu3d are triplet states, the spin of doped holes in Cu3d-O2p is a singlet state yielding ferrimagnetism. A ferromagnetic-(002) Bragg-peak of the doped holes is observed and enhanced as a function of d revealing strong ferromagnetism coupling between Cu-O layers along the c-axis.
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Affiliation(s)
- B L Ong
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore.,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - K Jayaraman
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore.,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - C Diao
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - T J Whitcher
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore.,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - A Jain
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore.,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - H Hung
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore
| | - M B H Breese
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore.,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
| | - E S Tok
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore
| | - A Rusydi
- Advanced Research Initiative for Correlated-Electron Systems (ARiCES), Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Singapore. .,Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore. .,Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore. .,NUS Graduate School for Integrative Sciences and Engineering, Singapore, 117456, Singapore.
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Cao W, Su Y, Liu N, Peng Y, Diao C, Cheng R. Location and Vascular Classification of 188 parathyroid glands in New Zealand White Rabbits. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-11760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The function and protection of the parathyroid glands are increasingly popular research topics. New Zealand white rabbits are the most commonly used animal model of parathyroid ischemia. However, information on the vasculature of their parathyroid glands is limited. We used 94 healthy New Zealand white rabbits, 3-4 months of age and 2-3kg in weight, for exploration of the parathyroid glands, which were stained using hematoxylin and eosin (HE) after removal. The following types were classified according to the relationship between the position of the inferior parathyroid gland and the thyroid: Type A, Close Type, Type B, and Distant Type. There were 188 cases, 4 where the inferior parathyroid glands were located near the dorsal side of thyroid (2.13%), 8 where the inferior parathyroid glands were located superior to the upper pole of the thyroid (4.26%), 20 where the inferior parathyroid glands were located parallel to the thyroid (10.64%), and 155 cases where the inferior parathyroid glands were located inferior to the lower pole of thyroid (82.45%). Identifying the location and classifying the vasculature of the parathyroid glands in New Zealand white rabbits will provide an anatomical model to assist in future research.
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Affiliation(s)
- W. Cao
- Kunming Medical University, China
| | - Y. Su
- Kunming Medical University, China
| | - N. Liu
- Kunming Medical University, China
| | - Y. Peng
- Kunming Medical University, China
| | - C. Diao
- Kunming Medical University, China
| | - R. Cheng
- Kunming Medical University, China
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O'Brien E, Shi C, Deng J, Diao C, Clarkson M, Shrivastava V, Adijian A, Hu A, Chiu M, Gwilym B, Hellmich A, Malozzi C, Batulan Z, Gertoffer W, Chen YX. HSP27 immunization attenuates atherogenesis by markedly reducing plasma PCSK9 and cholesterol levels. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.451] [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: 10/28/2022]
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Brodehl A, Garnett L, Diao C, Martens K, Nygren A, Chen Y, Belke D, Gerull B. TRANSGENIC MICE OVEREXPRESSING DSC2 DEVELOP BIVENTRICULAR CARDIOMYOPATHY ASSOCIATED WITH FIBROSIS AND NECROSIS. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.148] [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: 10/22/2022] Open
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Xiao X, Wang T, Li W, Song H, Gong C, Diao C, Yu M, Yuan T, Zhang Y, Sun X, Zhang Q, Lu K, Wang H, Schmitz O, Hansen T. Transfer from insulin to sulfonylurea treatment in a chinese patient with permanent neonatal diabetes mellitus due to a KCNJ11 R201H mutation. Horm Metab Res 2009; 41:580-2. [PMID: 19247925 DOI: 10.1055/s-0029-1192020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- X Xiao
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Abstract
Mild or moderate hypothermia (>30 degrees C) has been proposed for clinical use as a therapeutic option for achieving protection from cerebral ischaemia in brain injury patients. In this research, a theoretical model was developed to examine the brain temperature gradients during selective cooling of the brain surface after head injury. The head was modelled as a hemisphere consisting of several layers, representing the scalp, skull and brain tissue, respectively. The dimensions, physical properties and physiological characteristics for each layer, as well as the arterial blood temperature, were used as the input to the Pennes bioheat transfer equation to simulate the steady-state temperature distribution within the brain. Depending on the head surface temperature, a temperature gradient of up to 13 degrees C exists in the brain tissue. The results have shown that the volumetric-averaged brain tissue temperature Tbt,avg for adults and infants can be 1.7 and 4.3 degrees C, respectively, lower than the temperature of the arterial blood supplied to the brain tissue. The location where the probe should be placed to measure Tbt,avg was also determined by the simulation. The calculation suggests that the temperature sensor should be placed 7.5mm and 5.9 mm beneath the brain tissue surface for adults and infants, respectively, to monitor Tbt,avg continuously.
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Affiliation(s)
- L Zhu
- Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, USA.
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Zheng XL, Matsubara S, Diao C, Hollenberg MD, Wong NC. Epidermal growth factor induction of apolipoprotein A-I is mediated by the Ras-MAP kinase cascade and Sp1. J Biol Chem 2001; 276:13822-9. [PMID: 11278817 DOI: 10.1074/jbc.m011031200] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Insulin induces apolipoprotein A-I, apoA-I gene transcription via a membrane receptor with intrinsic tyrosine kinase activity. This finding prompted us to ask whether the gene is stimulated by epidermal growth factor (EGF), EGF a peptide hormone that binds to another member of the receptor superfamily with tyrosine kinase activity. Our data showed that like insulin, EGF increased abundance of apoA-I protein and transcription of the gene in human hepatoma, Hep G2 cells. The effects of both hormones appeared direct because their induction of apoA-I gene transcription was not affected by the protein synthesis inhibitor, cycloheximide. Although both insulin and EGF stimulate apoA-I expression, each hormone binds to a distinct membrane receptor thus suggesting differential intracellular signaling. Therefore, we used a panel of inhibitors to define the pathway(s) that mediate the actions of these hormones. Whereas, the actions of EGF required only the Ras-mitogen-activated protein, MAP kinase, those of insulin were mediated by equal participation of both the Ras-MAP kinase and protein kinase C, PKC cascades. Despite differences in signaling pathways triggered by each hormone receptor, the activation of apoA-I transcription required the participation of a single transcription factor, Sp1. Furthermore, EGF induction of transcription was attenuated by mutating the MAP kinase site at amino acid, Thr(266) rendering Sp1 phosphorylation deficient. In summary, EGF stimulation of apoA-I expression is mediated solely by the Ras-MAP kinase cascade and enhanced activity of this pathway requires Sp1 with an intact phosphorylation site at Thr(266). However, insulin induction of this gene is different and requires both Ras-MAP kinase and PKC pathways but their actions are also mediated by Sp1.
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Affiliation(s)
- X L Zheng
- Endocrine Research Group, Departments of Medicine, University of Calgary, Alberta, Canada T2N 4N1
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Zheng XL, Matsubara S, Diao C, Hollenberg MD, Wong NC. Activation of apolipoprotein AI gene expression by protein kinase A and kinase C through transcription factor, Sp1. J Biol Chem 2000; 275:31747-54. [PMID: 10829013 DOI: 10.1074/jbc.m000621200] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Our previous finding that insulin induces apolipoprotein AI (apoAI) transcription points to the participation of intracellular signaling. This finding prompted us to ask whether two classical G-protein-coupled signaling pathways requiring activated protein kinase A (PKA) or kinase C (PKC) may also regulate apoAI. Therefore, human hepatoma, Hep G2 cells stably transfected with pAI.474-CAT, a reporter construct spanning -474 to -7 of apoAI DNA fused to chloramphenicol acetyltransferase (CAT) were treated with 10 microm forskolin (FSK) or 50 nm phorbol dibutyrate (PDBu) to activate PKA and PKC, respectively. Results showed that the apoAI promoter activity increased 4-5-fold following 24 h of treatment with either FSK or PDBu. Induction by either agent was blocked with actinomycin D but not the protein synthesis inhibitor, cycloheximide. The PKA inhibitor, PKI 14-22 amide, abrogated induction by FSK, 100 microm 8-bromo-cAMP, or 100 ng/ml cholera toxin, but it had no effect on activation via PKC. Similarly, PDBu induction was attenuated by 2 microm of the PKC inhibitor, GF109203X, but it did not affect FSK activity. Next we used deletional constructs to show that the actions of FSK and PDBu required the insulin-responsive core element (IRCE). This motif matched the consensus binding site for the transcription factor, Sp1. The binding of Sp1 to the IRCE was confirmed by gel-retardation and supershift analysis. Site-directed mutagenesis of the IRCE eliminated Sp1 action and induction by FSK or PDBu. Whereas overexpression of Sp1 enhanced basal and FSK or PDBu induced promoter activity, transfection of an antisense oligomer against Sp1 mRNA attenuated both parameters. In summary, activation of PKA or PKC increases apoAI promoter activity. The activity of both signaling pathways is mediated by the IRCE, a motif that binds the transcription factor, Sp1.
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Affiliation(s)
- X L Zheng
- Endocrine Research Group, Departments of Medicine and Biochemistry & Molecular Biology and Pharmacology & Therapeutics, the Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
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