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Na CH, Seo JH, Kim MS, Shin BS, Choi H. Dermoscopy for lipidized dermatofibroma: A useful diagnostic tool. Ann Dermatol Venereol 2024; 151:103250. [PMID: 38442468 DOI: 10.1016/j.annder.2024.103250] [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: 09/01/2023] [Revised: 09/24/2023] [Accepted: 01/09/2024] [Indexed: 03/07/2024]
Affiliation(s)
- C H Na
- Department of Dermatology, Chosun University of Medicine, Gwangju, Korea
| | - J H Seo
- Department of Dermatology, Chosun University of Medicine, Gwangju, Korea
| | - M S Kim
- Department of Dermatology, Chosun University of Medicine, Gwangju, Korea
| | - B S Shin
- Department of Dermatology, Chosun University of Medicine, Gwangju, Korea
| | - H Choi
- Department of Dermatology, Chosun University of Medicine, Gwangju, Korea.
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Batheja V, Osman M, Wynne M, Nemirovsky D, Morcos G, Riess J, Shin B, Whalen M, Haji-Momenian S. Optimal size threshold for PIRADSv2 category 5 upgrade and its positive predictive value: is it predictive of "very high" likelihood of clinically-significant cancer? Clin Radiol 2024; 79:e94-e101. [PMID: 37945438 DOI: 10.1016/j.crad.2023.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/21/2023] [Accepted: 10/05/2023] [Indexed: 11/12/2023]
Abstract
AIM To identify the optimal size metric and threshold for Prostate Imaging Reporting and Data System (PIRADS) 5 upgrade, calculate its positive predictive value (PPV) for clinically-significant prostate cancer (csPCA), and determine if it is indicative of a "very high" likelihood of csPCA. MATERIALS AND METHODS One hundred and forty-three PIRADS 4 or 5 lesions were evaluated. Lesion diameters were used to calculate lesion volume (LV). Pearson correlation between maximum lesion diameter (MLD) and LV was calculated. Area under the curve (AUC) for discriminating csPCA (Gleason grade ≥ 3 + 4) was calculated using MLD and LV. Optimal size thresholds (using Youden index) and highly predictive size thresholds were identified for the whole prostate (WP), peripheral zone (PZ), and transitional zone (TZ). RESULTS There was high correlation between MLD and LV (r=0.77-0.81), with comparable AUCs for MLD and LV in the identification of csPCA in the WP (0.73, 0.72), PZ (0.73, 0.73), and TZ (0.79, 0.75). Optimal MLD thresholds were 1.4, 1.4, and 1.6 cm in the WP, PZ, and TZ respectively, with PPVs of 76%, 81%, and 69%, respectively. An MLD threshold of 2.7 cm would be needed in the WP to achieve a PPV approaching 90%, with sensitivity decreasing to 10%. CONCLUSIONS There is high correlation between MLD and LV with comparable discrimination of csPCA using each. PIRADSv2's 1.5 cm MLD threshold is near the optimal threshold for PIRADS 5 upgrade but has moderate PPV. A much higher threshold would be needed to increase its PPV, with significant sacrifice in sensitivity.
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Affiliation(s)
- V Batheja
- George Washington University School of Medicine, Washington, DC, USA
| | - M Osman
- George Washington University School of Medicine, Washington, DC, USA
| | - M Wynne
- George Washington University School of Medicine, Washington, DC, USA
| | - D Nemirovsky
- George Washington University School of Medicine, Washington, DC, USA
| | - G Morcos
- George Washington University School of Medicine, Washington, DC, USA
| | - J Riess
- Department of Radiology, George Washington Medical Faculty Associates, Washington, DC, USA
| | - B Shin
- Department of Radiology, George Washington Medical Faculty Associates, Washington, DC, USA
| | - M Whalen
- Department of Urology, George Washington Medical Faculty Associates, Washington, DC, USA
| | - S Haji-Momenian
- Department of Radiology, George Washington Medical Faculty Associates, Washington, DC, USA.
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Provenzano D, Wang JY, Haji-Momenian S, Shin B, Riess J, Khati N, Bauman J, Goyal S, Loew M, Chappell N, Rao YJ. Prediction of Progression After Cervix Cancer Radiotherapy Using a Machine-Learning Model on Pre-Treatment MRI. Int J Radiat Oncol Biol Phys 2023; 117:S132. [PMID: 37784341 DOI: 10.1016/j.ijrobp.2023.06.482] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) MRI may be useful to identify women with cervical cancer at high risk of disease progression to test strategies of treatment intensification. The purpose of this study was to determine the value of a machine-learning model built on pre-treatment MRI for prediction of risk of progression after radiation therapy. MATERIALS/METHODS MagneticResonance Imaging (MRI) data for women with cervical cancer was collected from The Cancer Genome Atlas Cervical Squamous Cell Carcinoma and Endocervical Adenocarcinoma Collection (TCGA-CESC) on the Cancer Imaging Archive (TCIA), which reported clinical, treatment, and imaging data from a single institution. 27 patients who had received radiation for cervical cancer were selected for input into a custom 3-D Residual Neural Network (ResNet) model with added custom layers specific to DICOM data in tensorflow python package. One T2 MRI per patient was used to predict recurrence free survival after radiation treatment, where patients were predicted to be "high risk" or "low risk" for disease recurrence as the output of the model. All slices of the T2 MRI were used. The model was validated using five-fold cross validation; 80% of the data was used to train each fold and 20% was used for testing. Final model statistical significance was confirmed through shuffle test at the p < 0.01 level. The clinical outcomes of patients and the model's "low-risk" and "high-risk" prediction were compared. RESULTS There were 27 patients in the study with mean age of 51 years (range 29-79). 20 patients had squamous cell carcinoma and 7 patients had adenocarcinoma. The stage breakdown consisted of 9 women IB, 2 IIA, 9 IIB, 2 IIIA, 2 IIIB, and 3 stage IV. 10 women were treated with radiation alone and 17 with chemo-radiation. 5 women received surgery in addition to radiation or chemoradiation. 21 patients received brachytherapy. Median follow-up of patients was 29 months (range 3-64). The model predicted 7 patients as "high risk" for recurrence; all 7 developed a recurrence during follow up. None of the 20 patients predicted to be "low risk" developed disease recurrence. Among all patients in the study, the two-year progression free survival (PFS) was 82.0%. Patients identified as "low risk" and "high risk" by model had two-year PFS of 100% and 43%, respectively. Among patients with recurrence, 3 developed local recurrence and 4 developed distant metastases. The ResNet model achieved cross-validated accuracy of 92% for prediction of progression-free survival (p<0.01). CONCLUSION A 3-D ResNet machine-learning model using pretreatment MRI image data can accurately predict clinical outcomes for cervical cancer following radiation therapy. Future work to confirm generalizability should focus on validation with a larger clinical dataset.
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Affiliation(s)
- D Provenzano
- Biomedical Engineering, George Washington University School of Engineering and Applied Science, Washington, DC
| | - J Y Wang
- Radiation Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - S Haji-Momenian
- Radiology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - B Shin
- Radiology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - J Riess
- Radiology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - N Khati
- Radiology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - J Bauman
- Medical Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - S Goyal
- Radiation Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - M Loew
- Medical Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - N Chappell
- Gynecological Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Y J Rao
- Radiation Oncology, George Washington University School of Medicine and Health Sciences, Washington, DC
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Vu T, Eberly H, Zheng A, Hintze A, Cruz J, Shin B. Abstract No. 599 Clinical significance of measuring hepatic venous pressure gradient during transjugular liver biopsy for patients with precirrhotic bridging fibrosis liver disease. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.581] [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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Kim CH, Yeom YS, Petoussi-Henss N, Zankl M, Bolch WE, Lee C, Choi C, Nguyen TT, Eckerman K, Kim HS, Han MC, Qiu R, Chung BS, Han H, Shin B. ICRP Publication 145: Adult Mesh-Type Reference Computational Phantoms. Ann ICRP 2020; 49:13-201. [PMID: 33231095 DOI: 10.1177/0146645319893605] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Shin B. Factors associated with oral health inequalities in Korean adolescents. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.1104] [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: 11/14/2022] Open
Abstract
Abstract
Aim
The purpose of this study was to identify factors related to socioeconomic differences in oral health behavior and oral symptom experience in Korean adolescents using the 2017 Korea Youth Risk Behavior Web-Based Survey(KYRBS).
Methods
From the national 2017 KYRBS, which was approved by the Research Ethics Review Committee of the Korea Centers for Disease Control and Prevention, 61,874 adolescents aged 12-18 years were selected as participants of the present study. Toothbrushing, gum bleeding and toothache experience were selected as dependent variables, and subjective socioeconomic status (SES) was used as a measure of SES. For statistical analysis, complex samples logistic regression analysis was performed using SAS 9.3 (PROC SURVEYLOGISTIC).
Results
The Odds Ratio (OR) for toothbrushing variable in the highest SES group was 1.78 (95% CI: 1.68-1.88). The OR for the bleeding gums in the lowest SES group was 1.28 (95% CI: 1.21-1.36). Academic factors accounted for 19% of socioeconomic differences in toothbrushing, and psychological factors accounted for 36-49% of socioeconomic differences in oral symptoms.
Conclusions
Adolescent oral health inequalities were associated with a variety of factors including health behaviors, psychological factors, family and academic factors. Thus, oral health promotion of adolescents can be achieved by integrating relevant factors, which can be effective when based on schools.
Key messages
Social gradient in oral health behavior and oral symptoms of Korean adolescents persist when adjusted for behavioural, psychosocial and material factors. Because oral health in adolescents is linked to overall health, health promotion can be achieved when oral health inequalities are integrated and mediated within the overall health domain.
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Affiliation(s)
- B Shin
- Department of Dental Hygiene, Gangneung-Wonju National University, Gangneung city, South Korea
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Kim CH, Yeom YS, Nguyen TT, Han MC, Choi C, Lee H, Han H, Shin B, Lee JK, Kim HS, Zankl M, Petoussi-Henss N, Bolch WE, Lee C, Chung BS, Qiu R, Eckerman K. New mesh-type phantoms and their dosimetric applications, including emergencies. Ann ICRP 2018; 47:45-62. [PMID: 29651869 DOI: 10.1177/0146645318756231] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Committee 2 of the International Commission on Radiological Protection (ICRP) has constructed mesh-type adult reference computational phantoms by converting the voxel-type ICRP Publication 110 adult reference computational phantoms to a high-quality mesh format, and adding those tissues that were below the image resolution of the voxel phantoms and therefore not included in the Publication 110 phantoms. The new mesh phantoms include all the necessary source and target tissues for effective dose calculations, including the 8-40-µm-thick target layers of the alimentary and respiratory tract organs, thereby obviating the need for supplemental organ-specific stylised models (e.g. respiratory airways, alimentary tract organ walls and stem cell layers, lens of the eye, and skin basal layer). To see the impact of the new mesh-type reference phantoms, dose coefficients for some selected external and internal exposures were calculated and compared with the current reference values in ICRP Publications 116 and 133, which were calculated by employing the Publication 110 phantoms and the supplemental stylised models. The new mesh phantoms were also used to calculate dose coefficients for industrial radiography sources near the body, which can be used to estimate the organ doses of the worker who is accidentally exposed by an industrial radiography source; in these calculations, the mesh phantoms were deformed to reflect the size of the worker, and also to evaluate the effect of posture on dose coefficients.
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Affiliation(s)
- C H Kim
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Y S Yeom
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - T T Nguyen
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - M C Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - C Choi
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - B Shin
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - J-K Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H S Kim
- b Korea Institute of Radiological & Medical Sciences, Republic of Korea
| | - M Zankl
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | - N Petoussi-Henss
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | | | - C Lee
- e National Cancer Institute, USA
| | - B S Chung
- f Ajou University School of Medicine, Republic of Korea
| | - R Qiu
- g Tsinghua University, P.R. China
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Jeong JS, Kim D, Kim KY, Ryu S, Han S, Shin BS, Kim GS, Gwak MS, Ko JS. Ischemic Preconditioning Produces Comparable Protection Against Hepatic Ischemia/Reperfusion Injury Under Isoflurane and Sevoflurane Anesthesia in Rats. Transplant Proc 2018; 49:2188-2193. [PMID: 29149981 DOI: 10.1016/j.transproceed.2017.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/30/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Various volatile anesthetics and ischemic preconditioning (IP) have been demonstrated to exert protective effect against ischemia/reperfusion (I/R) injury in liver. We aimed to determine whether application of IP under isoflurane and sevoflurane anesthesia would confer protection against hepatic I/R injury in rats. METHODS Thirty-eight rats weighing 270 to 300 grams were randomly divided into 2 groups: isoflurane (1.5%) and sevoflurane (2.5%) anesthesia groups. Each group was subdivided into sham (n = 3), non-IP (n = 8; 45 minutes of hepatic ischemia), and IP (n = 8, IP consisting of 10-minute ischemia plus 15-minute reperfusion before prolonged ischemia) groups. The degree of hepatic injury and expressions of B-cell lymphoma 2 (Bcl-2) and caspase 3 were compared at 2 hours after reperfusion. RESULTS Hepatic ischemia induced significant degree of I/R injuries in both isoflurane and sevoflurane non-IP groups. In both anesthetic groups, introduction of IP dramatically attenuated I/R injuries as marked by significantly lower aspartate aminotransferase and aminotransferase levels and better histologic grades compared with corresponding non-IP groups. There were 2.3- and 1.7-fold increases in Bcl-2 mRNA levels in isoflurane and sevoflurane IP groups, respectively, compared with corresponding non-IP groups (both P < .05). Caspase 3 level was significantly high in the isoflurane non-IP group compared with the sham group; however, there were no differences among the sevoflurane groups. CONCLUSIONS The degree of hepatic I/R injury was significantly high in both isoflurane and sevoflurane groups in rats. However, application of IP significantly protected against I/R injury in both volatile anesthetic groups to similar degrees, and upregulation of Bcl-2 might be an important mechanism.
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Affiliation(s)
- J S Jeong
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K Y Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Ryu
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Han
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - B S Shin
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G S Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M S Gwak
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J S Ko
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Shin B, Reddy S, Trerotola S, Ramchandani P. Abstract No. 573 Outcomes of ureteroplasty and stenting of anastomotic ureteral strictures occurring after urinary diversion and renal transplantation. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.618] [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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10
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Moskowitzova K, Liu K, Shin B, Ramirez-Barbieri G, Guariento A, Blitzer D, Cowan D, Thedsanamoorthy J, Yao R, Orfany A, Visner G, del Nido P, McCully J. Mitochondrial Transplantation Prolongs Cold Preservation Time in Murine Cardiac Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Youn SW, Lee JH, Yu DY, Kim Y, Kim BS, Seo SJ, Choe YB, Yun SK, Park J, Kim NI, Choi CW, Youn JI, Lee SJ, Lee MG, Kim KJ, Park CJ, Ro YS, Song HJ, Shin BS, Ahn SK, Lee JY, Won YH, Jang MS, Kim KH, Kim MH, Kim TY, Choi JH. The relationship between clinical characteristics including presence of exposed lesions and health-related quality of life (HRQoL) in patients with psoriasis: analysis from the nationwide epidemiologic study for psoriasis in Korea (EPI-PSODE study). J Eur Acad Dermatol Venereol 2018; 32:1499-1506. [PMID: 29430733 DOI: 10.1111/jdv.14865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/25/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND Psychological aspect and quality of life should be considered in treating patients with psoriasis. OBJECTIVE We sought to ascertain which clinical characteristics including presence of exposed lesions are associated with impairment of health-related quality of life (HRQoL) in patients with psoriasis. METHODS The EPI-PSODE study was a nationwide, multicenter, cross-sectional study conducted in Korea that included 1260 adult patients with psoriasis. In addition to clinical characteristics including presence of exposed lesions, data were collected using the Psoriatic Arthritis (PsA) Screening and Evaluation (PASE), Dermatology Life Quality Index (DLQI), MOS 36-Item Short-Form Health Survey (SF-36), Work Productivity and Activity Impairment Questionnaire Psoriasis (WPAI: PSO) and Medication Satisfaction Questionnaire (MSQ). RESULTS Patients with a DLQI score > 5 (n = 990) were younger, had an earlier onset of psoriasis, scored higher on the Psoriasis Area and Severity Index (PASI), had higher body surface area (BSA) and had higher PASE scores than patients with DLQI ≤ 5 (n = 266). The group of patients with exposed lesions (n = 871) were younger and male predominance, earlier onset of psoriasis, longer disease duration, higher PASI/BSA score and a higher proportion with drinking and smoking history each than the group of patients without exposed lesions (n = 389). Presence of exposed lesions negatively influenced DLQI, 36-Item Short-Form Health Survey (SF-36) (mental component), presenteeism, total work productivity impairment and total activity impairment in the WPAI: PSO. In multiple regression model, PASI score was the only variable which was significantly associated with all HRQoL measures. Presence of exposed lesions was a significant factor affecting DLQI and SF-36 (mental). CONCLUSION The presence of exposed lesions has a negative impact on quality of life, mental health and work productivity. Therefore, effective treatments are particularly needed for psoriasis patients with exposed lesions.
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Affiliation(s)
- S W Youn
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J-H Lee
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - D Y Yu
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - Y Kim
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - B S Kim
- Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Y B Choe
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - S-K Yun
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
| | - J Park
- Department of Dermatology, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - N I Kim
- Department of Dermatology, KyungHee University Medical center, Seoul, Korea
| | - C W Choi
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J I Youn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - S-J Lee
- Department of Dermatology, Kyungpook National University Hospital, Daegu, Korea
| | - M-G Lee
- Department of Dermatology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - K J Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - C J Park
- Department of Dermatology, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Y S Ro
- Department of Dermatology, Hanyang University Medical Center, Seoul, Korea
| | - H J Song
- Department of Dermatology, Korea University Guro Hospital, Seoul, Korea
| | - B S Shin
- Department of Dermatology, Chosun University Hospital, Gwangju, Korea
| | - S K Ahn
- Department of Dermatology, Wonju Severance Christian Hospital, Wonju, Korea
| | - J Y Lee
- Department of Dermatology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Y H Won
- Department of Dermatology, Chonnam National University Hospital, Gwangju, Korea
| | - M S Jang
- Department of Dermatology, Kosin University College of Medicine, Busan, Korea
| | - K H Kim
- Department of Dermatology, Dong-A University Hospital, Busan, Korea
| | - M H Kim
- Department of Dermatology, Dankook University Hospital, Cheonan, Korea
| | - T Y Kim
- Department of Dermatology, Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Korea
| | - J-H Choi
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Affiliation(s)
- Y. Song
- Pusan national university, Busan, Korea (the Republic of)
| | - K. Ryu
- Pusan national university, Busan, Korea (the Republic of)
| | - B. Shin
- Pusan national university, Busan, Korea (the Republic of)
| | - S. Choi
- Pusan national university, Busan, Korea (the Republic of)
| | - Y. Choi
- Pusan national university, Busan, Korea (the Republic of)
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Thomas A, Vigersky R, Shin J, Mc Mahon C, Shin B, Siegmund T, Kolassa R. Umfassende Bewertung der glykämischen Kontrolle mit einer zusammengesetzten Metrik: Das erweiterte GLUKOSE-PENTAGON-MODELL (eGPM). DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601769] [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: 10/19/2022]
Affiliation(s)
- A Thomas
- Medtronic Diabetes, Meerbusch, Germany
| | - R Vigersky
- Medtronic Diabetes, Northridge, United States
| | - J Shin
- Medtronic Diabetes, Northridge, United States
| | - C Mc Mahon
- Medtronic Diabetes, Northridge, United States
| | - B Shin
- Medtronic Diabetes, Northridge, United States
| | - T Siegmund
- Diabetes-Schwerpunktpraxis, München, Germany
| | - R Kolassa
- Diabetes-Schwerpunktpraxis, Bergheim/Erft, Germany
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Shin B, Cohen R, Nadolski G, Redmond J, Brandis A, Clark T. Sustained dialysis adequacy of symmetric-tip dialysis catheter with helical flow characteristics. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.737] [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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Habibollahi P, Hunt S, Gade T, Shin B, Dagli M, Mondschein J, Sudheendra D, Stavropoulos S, Soulen M, Nadolski G. Neoadjuvant locoregional therapy and long-term outcomes of patients with hepatocellular carcinoma listed for orthotopic liver transplantation. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.620] [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: 10/20/2022] Open
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Habibollahi P, Shin B, Pourhassan Shamchi S, Wachtel H, Fraker D, Trerotola S. Selective versus superselective venous sampling for the evaluation of recurrent or persistent hyperparathyrodism. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.936] [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: 11/26/2022] Open
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Tseng M, Ge S, Roberts R, Kuo C, Choi J, Nissen NN, Kim I, Chu M, Shin B, Toyoda M, Jordan SC. Liver Transplantation in a Patient With CD40 Ligand Deficiency and Hyper-IgM Syndrome: Clinical and Immunological Assessments. Am J Transplant 2016; 16:1626-1632. [PMID: 26762604 DOI: 10.1111/ajt.13580] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 09/11/2015] [Accepted: 10/05/2015] [Indexed: 01/26/2023]
Abstract
Monoclonal antibodies that disrupt CD40-CD40 ligand (CD40L) interactions are likely to have use in human transplantation. However, the extent of the immunosuppressive effects of CD40-CD40L blockade in humans is unknown. Hyper-IgM syndrome (HIGM) is a rare primary immunodeficiency syndrome characterized by defects in the CD40-CD40L pathway, severe immune deficiency (IgG), and high or normal IgM levels. However, the effects of CD40L deficiency on T- and natural killer (NK)-cell function is not established. Here, we present a patient with HIGM syndrome who underwent liver transplantation for hepatitis C virus infection. Posttransplantation, NK-cell antibody-dependent cytokine release (γ-interferon) to alloantigens and T cell responses to viral antigens and mitogens were assessed and showed normal CD4+ , CD8+ , and NK-cell responses. We also examined antibody-dependent cellular cytotoxicity against a CD40+ and HLA-expressing cell line. These experiments confirmed that the patient's NK cells were equivalent to those of normal subjects in mediating antibody-dependent cellular cytotoxicity despite the absence of CD40-CD40L interactions. Mitogenic stimulation of the patient's peripheral blood mononuclear cells showed no expression of CD40L on T and NK cells compared with increased expression in normal subjects. Taken together, these data suggest that absence of CD40L expression is responsible for aberrant B cell immunity but had little impact on NK- and T cell immune responses in vitro.
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Affiliation(s)
- M Tseng
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - S Ge
- Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
| | - R Roberts
- Department of Pediatrics, Division of Immunology, UCLA Center for the Health Sciences, Los Angeles, CA
| | - C Kuo
- Department of Pediatrics, Division of Immunology, UCLA Center for the Health Sciences, Los Angeles, CA
| | - J Choi
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - N N Nissen
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - I Kim
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - M Chu
- Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
| | - B Shin
- Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
| | - M Toyoda
- Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
| | - S C Jordan
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA.,Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
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Na CH, Choi H, Song SH, Kim MS, Shin BS. Two-year experience of using the measles, mumps and rubella vaccine as intralesional immunotherapy for warts. Clin Exp Dermatol 2015; 39:583-9. [PMID: 24934912 DOI: 10.1111/ced.12369] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND The currently available treatments for warts, including cryosurgery, laser surgery, electrosurgery, and topical keratolytic applications, are often very painful and can induce disfiguring scars. Recently, intralesional immunotherapy with skin test antigens and vaccines has been shown to be effective in the management of warts. AIMS To evaluate the efficacy of a new intralesional immunotherapy for warts, using the measles, mumps and rubella (MMR) vaccine. METHODS A retrospective study was performed, and we enrolled 136 patients with various types of warts into the study, which was for a duration of 2 years. Patients were treated for a total of six times at 2-week intervals. The treatment response was classified as one of three levels, based on reduction in the size and number of warts, and patients with complete response (CR) were checked for recurrence. Clinical evaluations were carried out using photographs and medical records. RESULTS Over half (51.5%) of patients experienced > 50% reduction in the size and number of warts, and 46.7% who had distant warts (in different locations) showed good response. Common warts showed significantly higher treatment response than other types of warts (P < 0.05). However, other clinical variables did not have any effect on efficacy. Almost all the patients reported mild pain during the injection, but other side effects were rarely observed. Only 5.6% of patients who experienced CR had recurrence of warts after 6 months. CONCLUSIONS We suggest that intralesional immunotherapy with MMR vaccine is a tolerable and effective method for patients who are sensitive to pain, concerned about side effects, or have common warts. Treatment response is improved by increasing the number of injections.
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Affiliation(s)
- C H Na
- Department of Dermatology, Chosun University Medical School, Gwangju, Korea
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Kim H, Ma E, Shin B, Kim J, Park D, Kim I. EP-1833: Effect of PsA derivatives on DNMT inhibition and radiosensitization in U373MG glioblastoma cell line. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31951-4] [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: 11/29/2022]
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Shim H, Shin B, Lee M, Jung A, Lee H, Ernst E. P04.14. Acupuncture for carpal tunnel syndrome: a systematic review of randomized controlled trials. Altern Ther Health Med 2012. [PMCID: PMC3373373 DOI: 10.1186/1472-6882-12-s1-p284] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Jeon JY, Kovanlikaya I, Boockvar JA, Mao X, Shin B, K Burkhardt J, Kesavabhotla K, Christos P, Riina H, Shungu DC, Tsiouris AJ. Metabolic response of glioblastoma to superselective intra-arterial cerebral infusion of bevacizumab: a proton MR spectroscopic imaging study. AJNR Am J Neuroradiol 2012; 33:2095-102. [PMID: 22576886 DOI: 10.3174/ajnr.a3091] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE SIACI of bevacizumab has emerged as a promising novel therapy in the treatment of recurrent GB. This study assessed the potential of (1)H-MRS as an adjunctive technique in detecting metabolic changes reflective of antiproliferative effects of targeted infusion of bevacizumab in the treatment of GB. MATERIALS AND METHODS Eighteen patients enrolled in a phase I/II study of SIACI of bevacizumab for treatment of recurrent GB were included. Concurrent MR imaging and (1)H-MRS scans were performed before and after treatment. Five distinct morphologic ROIs were evaluated for structural and metabolic changes on MR imaging and (1)H-MRS, which included enhancing, nonenhancing T2 hyperintense signal abnormality, and multiple control regions. Pre- and post-SIACI of bevacizumab peak areas for NAA, tCho, tCr, as well as tCho/tCr and tCho/NAA ratios, were derived for all 5 ROIs and compared using the Wilcoxon signed-rank test. RESULTS A significant median decrease of 25.99% (range -55.76 to 123.94; P = .006) in tCho/NAA was found post-SIACI of bevacizumab relative to pretreatment values in regions of enhancing disease. A trend-level significant median decrease of 6.45% (range -23.71 to 37.67; P = .06) was noted in tCho/NAA posttreatment in regions of nonenhancing T2-hyperintense signal abnormality. CONCLUSIONS The results of this (1)H-MRS analysis suggest that GB treatment with SIACI of bevacizumab may be associated with a direct antiproliferative effect, as demonstrated by significant reductions of tCho/NAA after the intervention.
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Affiliation(s)
- J Y Jeon
- Departments of Neuroradiology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY 10065, USA
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Toyoda M, Ge S, Suviolahti E, Pichurin P, Shin B, Pao A, Vo A, Deer N, Aguiluz A, Karasyov A, Jordan S. IFNγ production by NK cells from HLA-sensitized patients after in vitro exposure to allo-antigens. Transpl Immunol 2012; 26:107-12. [DOI: 10.1016/j.trim.2011.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 11/02/2011] [Accepted: 11/02/2011] [Indexed: 11/29/2022]
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Bueno JF, Bayes R, Davydov YI, Depommier P, Faszer W, Gagliardi CA, Gaponenko A, Gill DR, Grossheim A, Gumplinger P, Hasinoff MD, Henderson RS, Hillairet A, Hu J, Koetke DD, MacDonald RP, Marshall GM, Mathie EL, Mischke RE, Olchanski K, Olin A, Openshaw R, Poutissou JM, Poutissou R, Selivanov V, Sheffer G, Shin B, Stanislaus TDS, Tacik R, Tribble RE. Publisher’s Note: Precise measurement of parity violation in polarized muon decay [Phys. Rev. D84, 032005 (2011)]. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.85.039908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
We investigated the forces required to remove thoracic epidural catheters to determine the effect of patient position on removal. Eighty-four patients undergoing open thoracotomy and thoracic patient-controlled epidural analgesia were enrolled. Catheterisation was performed under fluoroscopic guidance before surgery, and the patients were allocated to one of three position groups for removal: prone; sitting; and lateral. On the third postoperative day, the peak tension during withdrawal in the assigned position was measured. No differences in mean (SD) forces were found between groups: prone 1.61 (0.39) N, supine 1.62 (0.61) N and lateral 1.36 (0.56) N (p = 0.140). The withdrawal forces required to remove thoracic epidural catheters were not affected by the position. Thus, the position for removal can be determined by patient's choice and clinical judgement.
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Affiliation(s)
- W S Sim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim WH, Lee CJ, Sim WS, Shin BS, Ahn HJ, Lim HY. Anatomical Analysis of Computed Tomography Images for Determining the Optimal Oblique Fluoroscope Angle for Percutaneous Coeliac Plexus Block. J Int Med Res 2011; 39:1798-807. [DOI: 10.1177/147323001103900522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
This retrospective study used abdominal computed tomography (CT) scan images to determine the optimal safe oblique angle for fluoroscopy in fluoroscope-assisted coeliac plexus block (CPB). Abdominal CT scans from 131 patients were included in the study: 42 patients with cancer of the pancreas head, 45 with cancer of the pancreas body and tail and 44 with chronic pancreatitis. The oblique angle and entry distance from the midline were measured at the T12 and L1 levels, and the safe angle range that avoided puncture of the organs was also measured. The optimal angle varied between the T12 and L1 levels, and between the right and left sides at the T12 level. There was no difference in the oblique angle between the patient groups. The optimal oblique angle for fluoroscopy was determined to be 17° for right T12, 18° for left T12, and 19° for both left and right L1.
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Affiliation(s)
- WH Kim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - CJ Lee
- Zeropain Pain Management Clinic, Seoul, Republic of Korea
| | - WS Sim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - BS Shin
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - HJ Ahn
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - HY Lim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Bayes R, Bueno JF, Hillairet A, Davydov YI, Depommier P, Faszer W, Gagliardi CA, Gaponenko A, Gill DR, Grossheim A, Gumplinger P, Hasinoff MD, Henderson RS, Hu J, Koetke DD, MacDonald RP, Marshall GM, Mathie EL, Mischke RE, Olchanski K, Olin A, Openshaw R, Poutissou JM, Poutissou R, Selivanov V, Sheffer G, Shin B, Stanislaus TDS, Tacik R, Tribble RE. Experimental constraints on left-right symmetric models from muon decay. Phys Rev Lett 2011; 106:041804. [PMID: 21405321 DOI: 10.1103/physrevlett.106.041804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Indexed: 05/30/2023]
Abstract
The TWIST Collaboration has completed a new measurement of the energy-angle spectrum of positrons from the decay of highly polarized muons. A simultaneous measurement of the muon decay parameters ρ, δ, and P(μ)(π)ξ tests the standard model in a purely leptonic process and provides improved limits for relevant extensions to the standard model. Specifically, for the generalized left-right symmetric model |(g(R)/g(L))ζ|<0.020 and (g(L)/g(R))m(2)>578 GeV/c(2), both 90% C.L.
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Affiliation(s)
- R Bayes
- TRIUMF, Vancouver, British Columbia, Canada
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Kim J, Kim S, Choi J, Shin B, Yoon S, Seo J, Shin SW, Kim YH, Kim JS, Park K. Use of T-cell infiltrate to predict long-term survival following local therapy in tongue cancer patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.5547] [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: 11/20/2022] Open
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Shin B, Cole SL, Park SJ, Ledford DK, Lockey RF. A new symptom-based questionnaire for predicting the presence of asthma. J Investig Allergol Clin Immunol 2010; 20:27-34. [PMID: 20232771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Early diagnosis and treatment of asthma is important for improving health and minimizing the social and economic burden of the disease. A simple questionnaire would provide a convenient and timesaving tool to help physicians diagnose asthma. OBJECTIVE The senior author developed a simple, pre-interview screening questionnaire--the Asthma Screening Questionnaire (ASQ)--consisting of 6 questions. The present report provides performance evidence that the ASQ is a reliable instrument for diagnosing asthma in adults. METHODS Participants were asthmatics or controls, aged 18 to 65 years. All participants completed the questionnaire (self-administered and physician-administered), and underwent spirometry and a methacholine challenge test (if there was no reversibility during initial spirometry). Sensitivity, specificity, and positive and negative predictive values were calculated for each question, and the total scores of asthmatics were compared with those of controls. The degree of agreement between the self-administered and the physician-administered questionnaire was calculated. RESULTS The main symptoms discriminating asthmatics from controls were cough more than average (88% vs 0%), cough from chest (72% vs 0%), shortness of breath with exercise (84% vs 16%), and chest tightness when lying down (72% vs 4%). A cutoff point of total score > or = 4 was associated with the highest combination of sensitivity (96%) and specificity (100%). Substantial agreement was observed between the self-administered and the physician-administered questionnaire (kappa statistic, 0.56-1.00; P<.0001). CONCLUSIONS The ASQ is a simple, inexpensive, and efficient pre-interview screening tool to diagnose asthma.
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Affiliation(s)
- B Shin
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, University of South Florida College of Medicine, James A. Haley Veterans' Medical Center, Tampa, Florida 33612, USA
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Doll C, Craighead P, Diaz R, Box A, Shin B, Eliasziw M, Lees-Miller S, Magliocco A. High ERCC1 Expression is Associated with Worse Survival in Patients with Locally Advanced Cervical Cancer Treated with Radiotherapy (RT): an Evaluation of AQUA® Versus Conventional IHC Methods. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.807] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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MacDonald RP, Bayes R, Bueno J, Davydov YI, Depommier P, Faszer W, Fujiwara MC, Gagliardi CA, Gaponenko A, Gill DR, Grossheim A, Gumplinger P, Hasinoff MD, Henderson RS, Hillairet A, Hu J, Jamieson B, Kitching P, Koetke DD, Marshall GM, Mathie EL, Mischke RE, Musser JR, Nozar M, Olchanski K, Olin A, Openshaw R, Poutissou JM, Poutissou R, Quraan MA, Selivanov V, Sheffer G, Shin B, Stanislaus TDS, Tacik R, Tribble RE. Precision measurement of the muon decay parametersρandδ. Int J Clin Exp Med 2008. [DOI: 10.1103/physrevd.78.032010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hao D, Lau HY, Eliasziw M, Box A, Diaz R, Shin B, Lees-Miller SP, Magliocco AM. A comprehensive evaluation of the prognostic value of ERCC1 protein expression, mRNA and genotype in locally advanced squamous cell carcinoma of the head and neck (LA-SCCHN). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.6011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Shin BS, Kim GS, Ko JS, Gwak MS, Yang M, Kim CS, Hahm TS, Lee SK. Comparison of femoral arterial blood pressure with radial arterial blood pressure and noninvasive upper arm blood pressure in the reperfusion period during liver transplantation. Transplant Proc 2007; 39:1326-8. [PMID: 17580132 DOI: 10.1016/j.transproceed.2007.02.075] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Accepted: 02/05/2007] [Indexed: 11/21/2022]
Abstract
PURPOSE The reperfusion period during liver transplantation is hemodynamically unstable. Accurate blood pressure measurements are the mainstay for the efficient management of abrupt cardiovascular changes. We sought to compare femoral arterial blood pressure (FABP) with radial arterial blood pressure (RABP) and noninvasive upper arm blood pressure (NIBP) in the reperfusion period. METHODS Thirty-six adult living donor liver recipients were enrolled in this prospective study. Blood pressures in 3 locations were simultaneously recorded from 1 minute before reperfusion to 15 minutes after reperfusion. We evaluated agreements between FABP and RABP and between FABP and NIBP using intraclass correlation coefficients. Also, we investigated the rates of postreperfusion syndrome (PRS) based on the measurements from 3 locations. RESULTS After reperfusion, the mean and diastolic RABP agreed more with the corresponding FABP than NIBP. However, systolic NIBP showed high agreement with FABP from 3 to 10 minutes after reperfusion in contrast with the moderate agreement between systolic RABP with FABP, and systolic values of NIBP than RABP were closer to FABP. The rates of PRS based on FABP, RABP, and NIBP measurements were 50.0% (18/36), 80.6% (29/36), and 50.0% (18/36), respectively. CONCLUSIONS We believe that NIBP in addition to RABP may be considered to be a reliable alternative when FABP is not available to evaluate hemodynamic instability in the reperfusion period during liver transplantation.
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Affiliation(s)
- B S Shin
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, 50 Irwondong, Kangnamgu, Seoul 135-710, Republic of Korea
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Shin B, Ledford D, Lockey R. Abdominal pain, Nausea, and Vomiting as the Initial Presenting Symptoms of Systemic Lupus Erythematosus. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jamieson B, Bayes R, Davydov YI, Depommier P, Doornbos J, Faszer W, Fujiwara MC, Gagliardi CA, Gaponenko A, Gill DR, Gumplinger P, Hasinoff MD, Henderson RS, Hu J, Kitching P, Koetke DD, Macdonald JA, MacDonald RP, Marshall GM, Mathie EL, Mischke RE, Musser JR, Nozar M, Olchanski K, Olin A, Openshaw R, Porcelli TA, Poutissou JM, Poutissou R, Quraan MA, Rodning NL, Selivanov V, Sheffer G, Shin B, Stanislaus TDS, Tacik R, Torokhov VD, Tribble RE, Vasiliev MA. Measurement ofPμξin polarized muon decay. Int J Clin Exp Med 2006. [DOI: 10.1103/physrevd.74.072007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Musser JR, Bayes R, Davydov YI, Depommier P, Doornbos J, Faszer W, Gagliardi CA, Gaponenko A, Gill DR, Green P, Gumplinger P, Hasinoff MD, Henderson RS, Hu J, Jamieson B, Kitching P, Koetke DD, Krushinsky AA, Lachin YY, Macdonald JA, MacDonald RP, Marshall GM, Mathie EL, Miasoedov LV, Mischke RE, Nord PM, Olchanski K, Olin A, Openshaw R, Porcelli TA, Poutissou JM, Poutissou R, Quraan MA, Rodning NL, Selivanov V, Sheffer G, Shin B, Sobratee F, Stanislaus TDS, Tacik R, Torokhov VD, Tribble RE, Vasiliev MA, Wright DH. Measurement of the Michel parameter rho in muon decay. Phys Rev Lett 2005; 94:101805. [PMID: 15783475 DOI: 10.1103/physrevlett.94.101805] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2004] [Indexed: 05/24/2023]
Abstract
The TWIST Collaboration has measured the Michel parameter rho in normal muon decay, mu(+)--> e(+)nu(e)nu (mu). In the standard model, rho = 3/4. Deviations from this value imply mixing of left- and right-handed muon and electron couplings. We find rho=0.750 80+/-0.000 32(stat) +/- 0.000 97(syst) +/- 0.000 23, where the last uncertainty represents the dependence of rho on the Michel parameter eta. This result sets new limits on the W(L)-W(R) mixing angle in left-right symmetric models.
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Affiliation(s)
- J R Musser
- Texas A&M University, College Station, Texas 77843, USA
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Dever TE, Roll-Mecak A, Choi SK, Lee JH, Cao C, Shin BS, Burley SK. Universal translation initiation factor IF2/eIF5B. Cold Spring Harb Symp Quant Biol 2003; 66:417-24. [PMID: 12762044 DOI: 10.1101/sqb.2001.66.417] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- T E Dever
- Laboratory of Gene Regulation and Development, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-2716, USA
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Park JH, Lee SW, Kim IT, Shin BS, Cheong SW, Cho UH, Huh MJ, Oh GS. TCDD-up-regulation of IGFBP-6 and IL-5R alpha subunit genes in vivo and in vitro. Mol Cells 2001; 12:372-9. [PMID: 11804338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Although the potent environmental contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) has been well known for its immunosuppressive activity, the mechanisms of its action have been difficult to elucidate. This is partly due to its inability to exert its effects in vitro. To further elucidate the underlying mechanisms of TCDD effects, we screened for genes that are regulated by the in vivo TCDD treatment of mice that are challenged with allogeneic tumor cells. RNA, collected from lymphoid organs including the thymus, draining lymph nodes, and bone marrow, was reverse-transcribed to cDNA and hybridized to DNA arrays that consisted of 588 genes (ClonTech, USA). The expression of the NF-kappaB p65, c-jun, and p27(Kip1) genes was increased by the TCDD treatment, as previously reported. In addition, we found that the expression of several genes, which were not reported as regulated by TCDD, were modulated by TCDD. Some genes, including insulin-like growth factor-binding protein-6 (IGFBP-6) and IL-5R alpha, were upregulated; while other genes, including CD14, were down-regulated. The expression of the IGFBP-6 and IL-5R alpha subunit genes by TCDD in the thymus was confirmed by RT-PCR and Western blot analyses. Furthermore, TCDD effects on the expression of the IGFBP-6 gene was also observed with EL4 mouse thymoma cells. This suggests that IGFBP-6 may be involved in thymic atrophy, and EL4 cells may be used as an in vitro model for studying molecular mechanisms of thymic atrophy.
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Affiliation(s)
- J H Park
- Department of Biology, Changwon National University, Korea.
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40
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Abstract
Eukaryotic initiation factor 1A (eIF1A) and the GTPase IF2/eIF5B are the only universally conserved translation initiation factors. Recent structural, biochemical and genetic data indicate that these two factors form an evolutionarily conserved structural and functional unit in translation initiation. Based on insights gathered from studies of the translation elongation factor GTPases, we propose that these factors occupy the aminoacyl-tRNA site (A site) on the ribosome, and promote initiator tRNA binding and ribosomal subunit joining. These processes yield a translationally competent ribosome with Met-tRNA in the ribosomal peptidyl-tRNA site (P site), base-paired to the AUG start codon of a mRNA.
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Affiliation(s)
- A Roll-Mecak
- Laboratories of Molecular Biophysics, Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA
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Yoo SD, Shin BS, Lee BM, Lee KC, Han SY, Kim HS, Kwack SJ, Park KL. Bioavailability and mammary excretion of bisphenol a in Sprague-Dawley rats. J Toxicol Environ Health A 2001; 64:417-426. [PMID: 11700006 DOI: 10.1080/152873901753170740] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This study reports the absolute oral bioavailability and mammary excretion of bisphenol A in rats. The oral bioavailability was determined after administration of relatively low iv (0.1 mg/kg) and oral (10 mg/kg) doses of bisphenol A to rats. After iv injection, serum levels of bisphenol A declined biexponentially, with the mean initial distribution and terminal elimination half-lives being 6.1 +/- 1.3 min and 52.5 +/- 2.4 min, respectively. The systemic clearance (Cls) and the steady-state volume of distribution (Vss) averaged 107.9 +/- 28.7 m/min/kg and 5.6 +/- 2.4 L/kg, respectively. Upon oral administration, the maximum serum concentration (Cmax) and the time to reach the maximum concentration (Tmax) were 14.7 +/- 10.9 ng/ml and 0.2 +/- 0.2 h, respectively. The apparent terminal elimination half-life of bisphenol A (21.3 +/- 7.4 h) after oral administration was significantly longer than that after iv injection, indicating the flip-flop of the absorption and elimination rates. The absolute oral bioavailability of bisphenol A was low (5.3 +/- 2.1%). To determine the extent of mammary excretion, bisphenol A was given by simultaneous iv bolus injection plus infusion to steady state at low, medium, and high doses. The steady-state serum levels of bisphenol A were linearly increased with higher dosing rates. The systemic clearance (mean range, 119.2-154.1 ml/min/kg) remained unaltered over the dosing rate studied. The levels of bisphenol A in milk exceeded those in serum, with the steady-state milk to serum concentration ratio being 2.4-2.7.
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Affiliation(s)
- S D Yoo
- College of Pharmacy, Sungkyunkwan University, Suwon, Kyonggi-do, Korea.
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42
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Kalinichenko VV, Lim L, Stolz DB, Shin B, Rausa FM, Clark J, Whitsett JA, Watkins SC, Costa RH. Defects in pulmonary vasculature and perinatal lung hemorrhage in mice heterozygous null for the Forkhead Box f1 transcription factor. Dev Biol 2001; 235:489-506. [PMID: 11437453 DOI: 10.1006/dbio.2001.0322] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Decreased pulmonary expression of Forkhead Box f1 (Foxf1) transcription factor was associated with lethal alveolar hemorrhage in 55% of the Foxf1 +/- newborn mice. The severity of the pulmonary abnormalities correlates with the levels of Foxf1 mRNA. Defects in alveolarization and vasculogenesis were observed in subsets of the Foxf1 +/- mice with relatively low levels of expression from the normal Foxf1 allele. Lung hemorrhage was coincident with disruption of the mesenchymal-epithelial cell interfaces in the alveolar and bronchiolar regions of the lung parenchyma and was associated with increased apoptosis and reduced surfactant protein B (SP-B) expression. Finally, the lung defect associated with the Foxf1 +/- mutation was accompanied by reduced expression of vascular endothelial growth factor (VEGF), the VEGF receptor 2 (Flk-1), bone morphogenetic protein 4 (Bmp-4), and the transcription factors of the Brachyury T-Box family (Tbx2-Tbx5) and Lung Kruppel-like Factor. Reduction in the level of Foxf1 caused neonatal pulmonary hemorrhage and abnormalities in alveologenesis, implicating this transcription factor in the regulation of mesenchyme-epithelial interaction critical for lung morphogenesis.
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Affiliation(s)
- V V Kalinichenko
- University of Illinois at Chicago, College of Medicine, Department of Molecular Genetics, 900 S. Ashland Ave., Chicago, IL 60607-7170, USA
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Rodning N, Andersson W, Davydov Y, Depommier P, Doornbos J, Faszer W, Gagliardi C, Gaponenko A, Gill D, Green P, Gumplinger P, Hardy J, Hasinoff M, Helmer R, Henderson R, Kitching P, Koetke D, Korkmaz E, Khruchinsky A, Maas D, Macdonald J, MacDonald R, Manweiler R, Marshall G, Mathie T, Musser J, Nord P, Olin A, Openshaw R, Ottewell D, Porcelli T, Poutissou JM, Poutissou R, Price G, Quraan M, Schaapman J, Selivanov V, Sheffer G, Shin B, Sobratee F, Soukup J, Stanislaus T, Stinson G, Tacik R, Torokhov V, Tribble R, Vasiliev M, Walter HC, Wang SC, Wright D. TWIST- The TRIUMF weak interaction symmetry test the Michel parameters from μ+ decay. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0920-5632(01)01232-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kalinichenko VV, Lim L, Shin B, Costa RH. Differential expression of forkhead box transcription factors following butylated hydroxytoluene lung injury. Am J Physiol Lung Cell Mol Physiol 2001; 280:L695-704. [PMID: 11238010 DOI: 10.1152/ajplung.2001.280.4.l695] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The forkhead box (Fox) proteins are a growing family of transcription factors that have important roles in cellular proliferation and differentiation and in organ morphogenesis. The Fox family members hepatocyte nuclear factor (HNF)-3beta (Foxa2) and HNF-3/forkhead homolog (HFH)-8 (FREAC-1, Foxf1) are expressed in adult pulmonary epithelial and mesenchymal cells, respectively, but these cells display only low expression levels of the proliferation-specific HFH-11B gene (Trident, Foxm1b). The regulation of these Fox transcription factors in response to acute lung injury, however, has yet to be determined. We report here on the use of butylated hydroxytoluene (BHT)-mediated lung injury to demonstrate that HFH-11 protein and RNA levels were markedly increased throughout the period of lung repair. The maximum levels of HFH-11 were observed by day 2 following BHT injury when both bronchiolar and alveolar epithelial cells were undergoing extensive proliferation. Although BHT lung injury did not alter epithelial cell expression of HNF-3beta, a 65% reduction in HFH-8 mRNA levels was observed during the period of mesenchymal cell proliferation. HFH-8-expressing cells were colocalized with platelet endothelial cell adhesion molecule-1-positive alveolar endothelial cells and with alpha-smooth muscle actin-positive peribronchiolar smooth muscle cells.
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Affiliation(s)
- V V Kalinichenko
- Department of Molecular Genetics, University of Illinois at Chicago, College of Medicine, 900 S. Ashland Ave., Rm. 2220 MBRB, Chicago, IL 60607-7170, USA.
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Kim KW, Kim SJ, Shin BS, Choi HY. Ligand binding profiles of delta-opioid receptor in human cerebral cortex membranes: evidence of delta-opioid receptor heterogeneity. Life Sci 2001; 68:1649-56. [PMID: 11263677 DOI: 10.1016/s0024-3205(01)00962-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/26/2022]
Abstract
In this study, receptor binding profiles of opioid ligands for subtypes of opioid delta-receptors were examined employing [3H]D-Pen2,D-Pen5-enkephalin ([3H]DPDPE) and [3H]Ile(5,6)-deltorphin II ([3H]Ile-Delt II) in human cerebral cortex membranes. [3H]DPDPE, a representative ligand for delta1 sites, labeled a single population of binding sites with apparent affinity constant (Kd) of 2.72 +/- 0.21 nM and maximal binding capacity (Bmax) value of 20.78 +/- 3.13 fmol/mg protein. Homologous competition curve of [3H]Ile-Delt II, a representative ligand for delta2 sites, was best fit by the one-site model (Kd = 0.82 +/- 0.07 nM). Bmax value (43.65 +/- 2.41 fmol/mg) for [3H]Ile-Delt II was significantly greater than that for [3H]DPDPE. DPDPE, [D-Ala2,D-Leu5]enkephalin (DADLE) and 7-benzylidenaltrexone (BNTX) were more potent in competing for the binding sites of [3H]DPDPE than for those of [3H]Ile-Delt II. On the other hand, deltorphin II (Delt II), [D-Ser2,Leu5,Thr6]enkephalin (DSLET), naltriben (NTB) and naltrindole (NTI) were found to be equipotent in competing for [3H]DPDPE and [3H]Ile-Delt II binding sites. These results indicate that both subtypes of opioid delta-receptors, delta1 and delta2, exist in human cerebral cortex with different ligand binding profiles.
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Affiliation(s)
- K W Kim
- Dept. of Pharmacology, Chonbuk University Medical School, Chonju Chonbuk, Republic of Korea.
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Kim SB, Shin BS, Choi SK, Kim CK, Park SH. Involvement of acetyl phosphate in the in vivo activation of the response regulator ComA in Bacillus subtilis. FEMS Microbiol Lett 2001; 195:179-83. [PMID: 11179649 DOI: 10.1111/j.1574-6968.2001.tb10518.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Development of genetic competence in Bacillus subtilis is regulated by ComP--ComA, a two-component signal transduction system. The response regulator ComA is primarily activated by ComP, a histidine kinase that mediates response to nutrient conditions and cell density, and the activated ComA is required for transcription of the srf operon, which is essential for the development of genetic competence and surfactin production. In this study we suggested that the ComA could also be activated by a small molecule phospho-donor, acetyl phosphate. Examination of srfA-lacZ expression indicated that a significant amount of srfA expression still occurs in the comP mutant during growth in a sporulation medium containing excess glucose. Analysis of a comP and pta mutant suggests that srfA activation seen in the comP mutant is dependent on the expression of pta, which encodes phosphotransacetylase (Pta). As Pta is responsible for the catalysis for conversion of acetyl coenzyme A to acetyl phosphate, we conclude that the expression of srfA seen in the comP mutant is mainly due to the activation of ComA by acetyl phosphate.
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Affiliation(s)
- S B Kim
- Laboratory of Microbial and Bioprocess Engineering, Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, South Korea
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Abstract
Naltriben (NTB) has been used to differentiate the subtypes of delta opioid receptors, delta1 and delta2. However, there is considerable evidence suggesting that NTB may act on other types of opioid receptors too. We examined the effects of NTB on the specific binding of radiolabeled ligands for opioid mu and kappa2 receptors, and the effects on the release of [3H]norepinephrine ([3H]NE) in rat cerebral cortex slices. NTB displaced the specific binding of [3H]DAMGO with Ki value of 19.79 +/- 1.12 nM in rat cortex membranes. Specific binding of [3H]diprenorphine ([3H]DIP) was inhibited by NTB with Ki value of 82.75 +/- 6.32 nM in the presence of DAMGO and DPDPE. High K+ (15 mM)-stimulated release of [3H]NE was attenuated by DAMGO in rat cerebral cortex slices. NTB (30 nM) shifted the dose-response curve of DAMGO to the right and attenuated the maximal effect. In the meantime, NTB inhibited high K+-stimulated [3H]NE release at concentrations above 100 nM. The inhibitory effect of NTB was not attenuated by CTAP (10 nM) and naloxone (3 nM) but by higher concentration of naloxone (30 nM), nor-BNI (300 nM) and bremazocine (3 nM). These results indicate that NTB, depending on the dosage, could acts not only as an antagonist at delta but also as a noncompetitive antagonist for mu receptors, and as an agonist for kappa2 receptors in rat cerebral cortex.
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MESH Headings
- Animals
- Cerebral Cortex/drug effects
- Cerebral Cortex/metabolism
- Diprenorphine/metabolism
- Enkephalin, Ala(2)-MePhe(4)-Gly(5)-/metabolism
- Enkephalin, Ala(2)-MePhe(4)-Gly(5)-/pharmacology
- Enkephalin, D-Penicillamine (2,5)-/pharmacology
- Ligands
- Male
- Naloxone/pharmacology
- Naltrexone/analogs & derivatives
- Naltrexone/pharmacology
- Narcotic Antagonists/pharmacology
- Norepinephrine/metabolism
- Peptide Fragments
- Peptides/pharmacology
- Potassium/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Opioid, delta/antagonists & inhibitors
- Receptors, Opioid, delta/drug effects
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/drug effects
- Receptors, Opioid, kappa/metabolism
- Receptors, Opioid, mu/antagonists & inhibitors
- Receptors, Opioid, mu/drug effects
- Receptors, Opioid, mu/metabolism
- Somatostatin
- Tritium
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Affiliation(s)
- K W Kim
- Department of Pharmacology, Chonbuk University Medical School, Chonju, Republic of Korea.
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Johnson ET, Ryu S, Yi H, Shin B, Cheong H, Choi G. Alteration of a single amino acid changes the substrate specificity of dihydroflavonol 4-reductase. Plant J 2001; 25:325-33. [PMID: 11208024 DOI: 10.1046/j.1365-313x.2001.00962.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Many plant species exhibit a reduced range of flower colors due to the lack of an essential gene or to the substrate specificity of a biosynthetic enzyme. Petunia does not produce orange flowers because dihydroflavonol 4-reductase (DFR) from this species, an enzyme involved in anthocyanin biosynthesis, inefficiently reduces dihydrokaempferol, the precursor to orange pelargonidin-type anthocyanins. The substrate specificity of DFR, however, has not been investigated at the molecular level. By analyzing chimeric DFRs of Petunia and Gerbera, we identified a region that determines the substrate specificity of DFR. Furthermore, by changing a single amino acid in this presumed substrate-binding region, we developed a DFR enzyme that preferentially reduces dihydrokaempferol. Our results imply that the substrate specificity of DFR can be altered by minor changes in DFR.
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Affiliation(s)
- E T Johnson
- Kumho Life and Environmental Science Laboratory, 1 Oryong-dong, Puk-gu, Kwangju 500-712 Korea
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49
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Lee J, Koh J, Shin B, Ahn K, Roh J, Kim Y, Kim K. Comparative study of angiostatic and anti-invasive gene expressions as prognostic factors in gastric cancer. Int J Oncol 2001. [DOI: 10.3892/ijo.18.2.355] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Yagi M, Kanzaki S, Kawamoto K, Shin B, Shah PP, Magal E, Sheng J, Raphael Y. Spiral ganglion neurons are protected from degeneration by GDNF gene therapy. J Assoc Res Otolaryngol 2000; 1:315-25. [PMID: 11547811 PMCID: PMC2957193 DOI: 10.1007/s101620010011] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022] Open
Abstract
Perceptual benefits from the cochlear prosthesis are related to the quantity and quality of the patient's auditory nerve population. Multiple neurotrophic factors, such as glial cell line-derived neurotrophic factor (GDNF), have been shown to have important roles in the survival of inner ear auditory neurons, including protection of deafferented spiral ganglion cells (SGCs). In this study, GDNF gene therapy was tested for its ability to enhance survival of SGCs after aminoglycoside/diuretic-induced insult that eliminated the inner hair cells. The GDNF transgene was delivered by adenoviral vectors. Similar vectors with a reporter gene (lacZ) insert served as controls. Four or seven days after bilateral deafening, 5 microl of an adenoviral suspension (Ad-GDNF or Ad-lacZ) or an artificial perilymph was injected into the left scala tympani of guinea pigs. Animals were sacrificed 28 days after deafening and their inner ears prepared for SGC counts. Adenoviral-mediated GDNF transgene expression enhanced SGC survival in the left (viral-treated) deafened ears. This observation suggests that GDNF is one of the survival factors in the inner ear and may help maintain the auditory neurons after insult. Application of GDNF and other survival factors via gene therapy has great potential for inducing survival of auditory neurons following hair cell loss.
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Affiliation(s)
- M Yagi
- Kresge Hearing Research Institute, University of Michigan, Ann Arbor 48109-0506, USA
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