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Piozzi GN, Kim JS, Choo JM, Shin SH, Kim JS, Lee TH, Baek SJ, Kwak JM, Kim J, Kim SH. Da Vinci SP robotic approach to colorectal surgery: two specific indications and short-term results. Tech Coloproctol 2022; 26:461-470. [PMID: 35182278 DOI: 10.1007/s10151-022-02597-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 02/04/2022] [Indexed: 01/17/2023]
Abstract
BACKGROUND Da Vinci® Single Port (dvSP) was recently developed. Its application in colorectal surgery is under investigation. The aim of this study was to explore the safety and feasibility of dvSP for intersphincteric (dvSP-ISR), right colectomy (dvSP-RC), and transverse colectomy (dvSP-TC). Surgical indication and short-term results were analyzed. METHODS All consecutive patients from a prospective database of patients who underwent dvSP-ISR, dvSP-RC, and dvSP-TC at Korea University Anam Hospital from November 2020 to December 2021, were analyzed. Perioperative, pathological, and oncological short-term outcomes were analyzed. RESULTS A total of 7 dvSP-ISR, 5 dvSP-RC, and 1 dvSP-TC were performed. Median age was 56.0 (55.0-61.0) years for the dvSP-ISR and 54.0 (44.7-63.5) years for the dvSP-RC/TC. Median body mass index was 22.8 (17.1-24.8) kg/m2 for the dvSP-ISR and 23.6 (20.8-26.9) kg/m2 for the dvSP-RC/TC. All dvSP-ISR patients received neoadjuvant long-course chemoradiotherapy, including one patient with squamocellular carcinoma who was treated with 5-fluorouracil (5-FU)/mitomycin. All other patients, excluding one dvSP-RC patient with Crohn's disease, had an adenocarcinoma. Median operation time was 280 (240-370) minutes for the dvSP-ISR and 220 (201-270) minutes for the dvSP-RC/TC. Estimated blood loss was insignificant. No intraoperative complications or conversions to multiport/open surgery was reported. Median post-operative stay was 7.0 (6.0-10.0) days for the dvSP-ISR and 5.0 (4.0-6.7) days for the dvSP-RC/TC. Quality of mesorectum was complete for six patients, and nearly complete for one. Median number of retrieved lymph nodes were 21 (17-25) for the dvSP-ISR and 28 (24-49) for the dvSP-RC/TC. Proximal and distal resection margins were tumor free. Four patients experienced post-operative complications not related to the platform which were: ileus, voiding dysfunction, infected pelvic hematoma, and wound infection. Median follow-up was 9 (6-11) months and 11 (7-17) months for the dvSP-ISR and dvSP-RC/TC, respectively. Two patients had systemic recurrence; all others were tumor free. CONCLUSIONS The dvSP platform is safe and feasible for intersphincteric resection with right lower quadrant access, and right/transverse colectomy with suprapubic access. Further studies are needed to evaluate benefit differences compared to multiport robotic platform.
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Affiliation(s)
- G N Piozzi
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J-S Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J M Choo
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S H Shin
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J S Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - T-H Lee
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S-J Baek
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J-M Kwak
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S H Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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Park SJ, Han HS, Shin SH, Yoo KH, Li K, Kim BJ, Seo SJ, Park KY. Adverse skin reactions due to use of face masks: a prospective survey during the COVID-19 pandemic in Korea. J Eur Acad Dermatol Venereol 2021; 35:e628-e630. [PMID: 34131961 PMCID: PMC8447351 DOI: 10.1111/jdv.17447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S H Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Kim YI, Song KB, Lee YJ, Park KM, Hwang DW, Lee JH, Shin SH, Kwon JW, Ro JS, Kim SC. Management of isolated recurrence after surgery for pancreatic adenocarcinoma. Br J Surg 2019; 106:898-909. [PMID: 31162655 DOI: 10.1002/bjs.11144] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 07/10/2018] [Accepted: 01/25/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Recurrence of pancreatic cancer after primary pancreatectomy occurs in the vast majority of patients. The role of surgical treatment for recurrent pancreatic cancer is not well established. METHODS Patients who underwent primary pancreatectomy with curative intent from 2000 to 2014 at a single large-volume centre were evaluated retrospectively. CT or PET was used to select patients with an isolated recurrence. The clinicopathological features and survival outcomes were compared according to treatment modalities. RESULTS Of the 1610 patients with pancreatic cancer who underwent resection, 1346 (83·6 per cent) were diagnosed with recurrent pancreatic cancer. Recurrence was locoregional in 366 patients (27·2 per cent), distant multifocal in 251 (18·6 per cent), distant isolated in 188 (14·0 per cent), locoregional plus distant in 153 (11·4 per cent) and peritoneal seeding in 388 (28·8 per cent). Of the 1346 patients with recurrence, 197 (14·6 per cent) had isolated recurrence; of these, 48 (24·4 per cent of all isolated recurrences; 3·6 per cent of all recurrences) underwent resection. Median survival of the 197 patients after diagnosis of isolated recurrence was 14·7 months; it was longer in patients who underwent surgical resection than among those treated non-surgically (23·5 versus 12·0 months; P = 0·014). Multivariable analysis showed that chemotherapy and resection for recurrence were associated with better prognosis. Median survival after recurrence was longest in the 23 patients with isolated pulmonary recurrence (33·3 months). Survival after recurrence was better in patients who underwent resection of isolated recurrence in the remnant pancreas (median 28·0 versus 12·0 months, P = 0·010) and lung (median 36·5 versus 9·5 months; P = 0·010) than in those who did not undergo resection. CONCLUSION Surgical resection may be considered an option for treatment of patients with isolated recurrent pancreatic cancer.
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Affiliation(s)
- Y I Kim
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - K B Song
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - Y-J Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - K-M Park
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - D W Hwang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J H Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - S H Shin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J W Kwon
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J-S Ro
- Clinical Preventive Medicine Centre, Seoul National University Bundang Hospital, Bundang-gu, South Korea
| | - S C Kim
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
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Nevidomskyte D, Tang GL, Shin SH, Hatsukami TS, Khor S, Flum DR, Meissner MH, Shalhub S. Comparison of outcomes in women and men following carotid interventions in the Washington state's Vascular Interventional Surgical Care and Outcomes Assessment Program. J Vasc Surg 2019; 69:1121-1128. [DOI: 10.1016/j.jvs.2018.08.152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 08/08/2018] [Indexed: 12/01/2022]
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Baek YS, Kim DY, Park JH, Yoon GS, Choi SH, Ko KY, Kwon SW, Park SD, Shin SH, Woo SI, Kim DH, Kwan J. P6619Long-term impact of metabolic syndrome management on mortality in patients with atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6619] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y S Baek
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - D Y Kim
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - J H Park
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - G S Yoon
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - S H Choi
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - K Y Ko
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - S W Kwon
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - S D Park
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - S H Shin
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - S I Woo
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - D H Kim
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
| | - J Kwan
- Inha University Hospital, Cardiology, Incheon, Korea Republic of
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Yoon GS, Baek YS, Choi SH, Park JH, Ko KY, Park SD, Kwon SW, Shin SH, Woo SI, Kim DH, Kwan J. P4812Comparison of ischemic stroke risk in atrial fibrillation patients with or without myocardial infarction: a propensity score matched study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4812] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- G S Yoon
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - Y S Baek
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - S H Choi
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - J H Park
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - K Y Ko
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - S D Park
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - S W Kwon
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - S H Shin
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - S I Woo
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - D H Kim
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
| | - J Kwan
- Inha University Hospital, Division of Cardiology, Incheon, Korea Republic of
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Baek YS, Kim DY, Park JH, Yoon GS, Choi SH, Ko KY, Kwon SW, Park SD, Shin SH, Woo SI, Kim DH, Kwan J. P981Long-term clinical impact of sinus rhythm restoration in atrial fibrillation patients with heart failure with mid-ranged ejection fraction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p981] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y S Baek
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - D Y Kim
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - J H Park
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - G S Yoon
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - S H Choi
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - K Y Ko
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - S W Kwon
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - S D Park
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - S H Shin
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - S I Woo
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - D H Kim
- Inha University Hospital, cardiology, Incheon, Korea Republic of
| | - J Kwan
- Inha University Hospital, cardiology, Incheon, Korea Republic of
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Shin SH, Singh N. IP169. Vascular Surgery Trainees Should Have Formal Career Planning. J Vasc Surg 2018. [DOI: 10.1016/j.jvs.2018.03.171] [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: 10/16/2022]
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Shin SH, Shalhub S. PC108. Integrated Residency Is Associated With an Increase in Women Among Vascular Surgery Trainees. J Vasc Surg 2018. [DOI: 10.1016/j.jvs.2018.03.299] [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: 10/16/2022]
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Shalhub S, Schäfer M, Hatsukami TS, Sweet MP, Reynolds JJ, Bolster FA, Shin SH, Reece TB, Singh N, Starnes BW, Jazaeri O. Association of variant arch anatomy with type B aortic dissection and hemodynamic mechanisms. J Vasc Surg 2018; 68:1640-1648. [PMID: 29804742 DOI: 10.1016/j.jvs.2018.03.409] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 03/08/2018] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Congenital aortic arch variations are more common in patients with thoracic aortic disease for reasons unknown. Additionally, little is understood about their relation to type B aortic dissections (TBAD) specifically. We investigated the prevalence of variant aortic arch anatomy in patients with TBAD compared with controls. To understand the implications of how variant aortic arch anatomy may contribute to degenerative aortic disease, we compared flow hemodynamics of three variations of aortic arches using four-dimensional flow magnetic resonance imaging (4D flow MRI). METHODS Arch anatomy on computed tomography imaging was reviewed and compared between patients with TBAD and age/sex-matched controls free of aortic pathology. Arch variants were defined as follows: common origin of innominate and left common carotid artery (bovine arch), aberrant right subclavian artery, and right-sided aortic arch. Demographics, TBAD characteristics, and follow-up data were abstracted. Patients with TBAD with variant and conventional aortic arches were compared. Additionally, three matched healthy controls with conventional, bovine, and aberrant right subclavian artery arches underwent 4D flow MRI evaluation to assess if there were differences in flow patterns by arch type. Indices of regional hemodynamic wall sheer stress were compared. RESULTS Computed tomography scans of 185 patients with TBAD (mean age, 58.1 ± 12.4 years; 72.4% males; 71.4% Caucasian) and 367 controls (mean age, 62.5 ± 13.4 years; 67% males; 77.9% Caucasian) were reviewed. Variant arch anatomy was more prevalent in patients with TBAD (40.5% vs 24.5%; P < .001). In patients with TBAD, there were no differences in the mean age of presentation and descending thoracic aorta diameter among those with variant or conventional arch anatomy. Patients with TBAD with variant arch anatomy had a higher percentage of dissection related thoracic aortic repairs (54.7% vs 33.6%; P = .004) with repairs occurring predominantly in the acute phase. 4D flow MRI demonstrated a higher systolic wall shear stress along the inner curve of the bovine arch compared with the conventional aberrant right subclavian artery arches. CONCLUSIONS Variant aortic arch anatomy is significantly more prevalent in patients with TBAD. patients with TBAD with variant arch anatomy had a higher percentage of dissection-related aortic repair. Preliminary 4D flow MRI data show differences in hemodynamic flow patterns between variant and conventional arches. Studies of long-term outcomes based on arch anatomy may offer additional insight to TBAD genesis and possibly influence management decisions.
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Affiliation(s)
- Sherene Shalhub
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash.
| | - Michal Schäfer
- Department of Cardiology, Children's Hospital Colorado, Aurora, Colo
| | - Thomas S Hatsukami
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - Matthew P Sweet
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - Jason J Reynolds
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - Ferdia A Bolster
- Department of Radiology, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Susanna H Shin
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - T Brett Reece
- School of Medicine, Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado Denver, Aurora, Colo
| | - Niten Singh
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - Benjamin W Starnes
- Division of Vascular Surgery, Department of Surgery, University of Washington, Seattle, Wash
| | - Omid Jazaeri
- School of Medicine, Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, University of Colorado Denver, Aurora, Colo
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Donnally CJ, Rothenberg PM, Metser G, Massel DH, Butler AJ, Damodar D, Shin SH, Zakrison TL. Orthopedic injuries associated with jet-skis (personal watercrafts): A review of 127 inpatients. Orthop Traumatol Surg Res 2018; 104:267-271. [PMID: 29410212 DOI: 10.1016/j.otsr.2018.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 11/27/2017] [Accepted: 01/08/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Personal watercrafts (PWC) account for a disproportionate amount of water based injuries. Current literature suggests those with less PWC experience are more at risk for injury. Previous studies have not specifically evaluated the orthopedic implications of PWC usage or how various mechanisms of injury (MOI) contribute to different injury patterns. HYPOTHESIS PWC injuries will frequently require orthopedic intervention. The presence of an orthopedic injury will result in increased injury severity score (ISS), hospital and intensive care unit (ICU) length of stay (LOS). Patients visiting our region will have less PWC experience and so are more prone to serious injuries. MATERIALS AND METHODS Retrospective cohort study at a single Level 1 trauma center of admitted patients sustaining PWC injuries from 02/2004-03/2017. The following were studied: demographics, mechanism, season, ISS, hospital and ICU LOS, follow-up, fracture characteristics and management. RESULTS Hundred and twenty-seven patients were admitted due to PWC injury, 66 (52.0%) sustained an orthopedic injury, totaling 103 fractures (48 [46.6%] lower extremity, 26 [25.2%] upper extremity, 14 [13.6%] vertebral, 11 [10.7%] pelvic ring and 4 [3.9%] acetabulum). The mean age of orthopedic patients was 29 years (range 8-62). Handle bar injuries were significantly associated with open fractures, (13 of 25 open fractures, 3 of which became infected). Injuries occurring during the winter were associated with a higher ISS, yet more injuries occurred in the summer. A patient being a "visitor" to the region did not influence ISS. The mean LOS was 12.6 days for orthopedic patients. Eighteen orthopedic patients (27.3%) required ICU admission and 36 (54.5%) patients required orthopedic surgery (mean 2.11 operations). DISCUSSION A majority of PWC injuries resulted in extremity fractures with a moderate percentage requiring orthopedic surgery. Correlations between PWC experience and injury incidence can provide information for increased safety. LEVEL OF EVIDENCE IV; retrospective.
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Affiliation(s)
- C J Donnally
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US.
| | - P M Rothenberg
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US
| | - G Metser
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US
| | - D H Massel
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US
| | - A J Butler
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US
| | - D Damodar
- Department of Orthopedics, university of Miami hospital, 1400 NW 12th avenue, 33136 Miami, US
| | - S H Shin
- Department of Surgery, Jackson Memorial hospital, 1800 NW 10th avenue, 33136 Miami, US
| | - T L Zakrison
- Department of Surgery, Jackson Memorial hospital, 1800 NW 10th avenue, 33136 Miami, US
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Lee JW, Cha JH, Shin SH, Cha HJ, Kim JH, Park CK, Pak KA, Yoon JS, Park SY. Effect of the sexual abstinence period recommended by the World Health Organization on clinical outcomes of fresh embryo transfer cycles with normal ovarian response after intracytoplasmic sperm injection. Andrologia 2018; 50:e12964. [PMID: 29460293 DOI: 10.1111/and.12964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2018] [Indexed: 11/28/2022] Open
Abstract
This study was to investigate whether the sexual abstinence period (SAP) recommended by the World Health Organization (WHO) affects clinical outcomes. We compared the rate of clinical outcomes between 2-7 and ≥8 days of SAP in first fresh embryo transfer after intracytoplasmic sperm injection (ICSI) in groups of young maternal age (YMA: <38 years) and old maternal age (OMA: ≥38 years). We conducted a retrospective study of 449 first ICSI cycles with a normal ovarian response. SAP was identified before collecting the semen samples. Semen analysis was performed based on the guidelines recommended by WHO (2010). Sperm preparation was made using the swim-up method. Patients' baseline characteristics in the YMA and OMA groups did not differ. The rates of fertilisation, top-quality embryos on day 3, biochemical pregnancy, clinical pregnancy, ongoing pregnancy, abortion and implantation per cycle were not significantly different between 2-7 and ≥8 days of SAP in the YMA or OMA group. In conclusion, SAP beyond the recommended period by WHO was not associated with the rates of a lower fertilisation and pregnancy in human in vitro fertilisation (IVF). We think that a new criterion of SAP for clinical application in human IVF needs to be considered by WHO.
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Affiliation(s)
- J W Lee
- Agaon Fertility Clinic, Seoul, Korea
- College of Animal Life Science, Kangwon National University, Chuncheon, Korea
| | - J H Cha
- Agaon Fertility Clinic, Seoul, Korea
| | - S H Shin
- Agaon Fertility Clinic, Seoul, Korea
- College of Animal Life Science, Kangwon National University, Chuncheon, Korea
| | - H J Cha
- Agaon Fertility Clinic, Seoul, Korea
| | - J H Kim
- Agaon Fertility Clinic, Seoul, Korea
| | - C K Park
- College of Animal Life Science, Kangwon National University, Chuncheon, Korea
| | - K A Pak
- Agaon Fertility Clinic, Seoul, Korea
| | - J S Yoon
- Agaon Fertility Clinic, Seoul, Korea
| | - S Y Park
- Agaon Fertility Clinic, Seoul, Korea
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Kang H, Gwak HS, Shin SH, Woo MK, Jeong IH, Yoo H, Kwon JW, Lee SH. Monitoring rate and predictability of intraoperative monitoring in patients with intradural extramedullary and epidural metastatic spinal tumors. Spinal Cord 2017; 55:906-910. [PMID: 28485386 DOI: 10.1038/sc.2017.43] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 03/12/2017] [Accepted: 03/15/2017] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Single-center retrospective study. OBJECTIVES To evaluate the monitoring rate, sensitivity and specificity of intraoperative monitoring (IOM) during removal of intradural extramedullary (IDEM) or epidural metastatic spinal tumors. Also, to assess the efficacy of monitoring somatosensory-evoked potentials (SSEP) when motor-evoked potentials (MEP) are not measurable. SETTING The Neuro-Oncology Clinic, National Cancer Center, Korea. METHODS Patients (n=101) with IDEM or epidural metastatic spinal tumors at the cord level underwent surgeries monitored with SSEP and/or MEP. The monitoring rate was defined as negative when MEP or SSEP could not be measured after reversal of the neuromuscular block under general anesthesia. Positive IOM changes included more than a 50% change in the MEP or SSEP amplitude and more than a 10% delay in SSEP latency. RESULTS MEP was measurable in 73% of patients. The MEP monitoring rate in patients with motor power grades of 3 or less was 39%, which was lower than that of SSEP (83%). The sensitivity, specificity and predictability of MEP for motor changes were 93, 90 and 91%, respectively. Conversely, the sensitivity, specificity and predictability of SSEP were 62, 97 and 89%, respectively. In patients in whom MEP was not measurable (n=24), SSEP was monitored with a predictability of 83%. CONCLUSION In cases of extramedullary spinal tumors, MEP shows a higher sensitivity than SSEP does. However, the monitoring rate of MEP in non-ambulatory patients was lower than that of SSEP. In those cases, SSEP can be useful to monitor for postoperative neurological deficits.
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Affiliation(s)
- H Kang
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | - H S Gwak
- Department of System Cancer Science, Graduate School of Cancer Science and Policy, Goyang, Korea
| | - S H Shin
- Neuro-Oncology Clinic, National Cancer Center, Goyang, Korea
| | - M K Woo
- Neurology Clinic, National Cancer Center, Goyang, Korea
| | - I H Jeong
- Neurology Clinic, National Cancer Center, Goyang, Korea
| | - H Yoo
- Neuro-Oncology Clinic, National Cancer Center, Goyang, Korea
| | - J W Kwon
- Neuro-Oncology Clinic, National Cancer Center, Goyang, Korea
| | - S H Lee
- Neuro-Oncology Clinic, National Cancer Center, Goyang, Korea
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14
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Motaganahalli RL, Smeds MR, Harlander-Locke MP, Lawrence PF, Fujimura N, DeMartino RR, De Caridi G, Munoz A, Shalhub S, Shin SH, Amankwah KS, Gelabert HA, Rigberg DA, Siracuse JJ, Farber A, Debus ES, Behrendt C, Joh JH, Saqib NU, Charlton-Ouw KM, Wittgen CM. A multi-institutional experience in adventitial cystic disease. J Vasc Surg 2017; 65:157-161. [DOI: 10.1016/j.jvs.2016.08.079] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 08/12/2016] [Indexed: 10/20/2022]
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15
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Fujiwara Y, Kitamura E, Ochi S, Shin SH, Fukunaga M, Yokoyama K, Fukuhara Y, Ueda N, Kamada T, Orita Y. Isotopic measurement of glomerular intracapillary volume as a quantitative index for mesangial cell contractility. Contrib Nephrol 2015; 95:12-21. [PMID: 1807902 DOI: 10.1159/000420635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Y Fujiwara
- First Department of Medicine, Osaka University Medical School, Japan
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16
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Abstract
BACKGROUND Previous studies have reported the protective effects on skin elasticity of the edible marine seaweed Ecklonia cava, which acts through regulation of both antioxidative and anti-inflammatory responses. AIM We evaluated the effect of E. cava and one of its components, dioxinodehydroeckol, on hair-shaft growth in cultured human hair follicles and on hair growth in mice. METHODS The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to check cell viability of human dermal papilla cells (DPCs) and outer root sheath (ORS) cells after treatment with E. cava and its metabolite, dioxinodehydroeckol. Hair-shaft growth was measured using the in vitro hair-follicle organ-culture system, in the presence or absence of E. cava and dioxinodehydroeckol. Anagen induction activity was examined by topical application of E. cava to the dorsal skin of C57BL/6 mice. Insulin-like growth factor (IGF)-1 expression was measured by reverse transcriptase PCR and ELISA. RESULTS The proliferation activity was found to be highest for the ethyl acetate-soluble fraction of E. cava (EAFE) in DPCs and in ORS cells. Treatment with EAFE resulted in elongation of the hair shaft in cultured human hair follicles, and promoted transition of the hair cycle from the telogen to the anagen phase in the dorsal skin of C57BL/6 mice. In addition, EAFE induced an increase in IGF-1 expression in DPCs. Dioxinodehydroeckol, a component of E. cava, induced elongation of the hair shaft, an increase in proliferation of DPCs and ORS cells, and an increase in expression of IGF-1 in DPCs. CONCLUSIONS These results suggest that E. cava containing dioxinodehydroeckol promotes hair growth through stimulation of DPCs and ORS cells.
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Affiliation(s)
- S S Bak
- Marine Bioprocess Research Center, Pukyong National University, Busan, Korea
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17
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Shin SH, Choi IS, Thomas K, David CA. Combined surgical and endovascular management of a giant fusiform PCA aneurysm in a pediatric patient. A case report. Interv Neuroradiol 2013; 19:222-7. [PMID: 23693047 DOI: 10.1177/159101991301900212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 01/05/2013] [Indexed: 11/17/2022] Open
Abstract
Treatment of intracranial giant aneurysms presents is challenging. In the case of pediatric giant aneurysm, more challenges arise. We describe our experience with a 17-year-old pediatric patient who presented with severe headache. She was diagnosed as having a giant fusiform aneurysm at the right P1-P2-Pcom junction. The aneurysm was treated with superficial temporal artery-posterior cerebral artery bypass and subsequent coil embolization of the aneurysm with parent artery occlusion. The patient had an excellent outcome at one-year follow-up. Our case suggests a combined approach of surgical and endovascular management may yield a better outcome than surgery or endovascular management alone in the treatment of pediatric giant aneurysm.
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Affiliation(s)
- S H Shin
- Department of Radiology, University of Ulsan College of Medicine, Ulsan, Korea
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18
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Abstract
It is important to be able to identify patients with an increased risk of venous thromboembolism (VTE) in order to minimise the risk of an event. We investigated the incidence and risk factors for post-operative VTE in 168 consecutive patients with a malignancy of the lower limb. The period of study included ten months before and 12 months after the introduction of chemical thromboprophylaxis. All data about the potential risk factors were identified and classified into three groups (patient-, surgery- and tumour-related). The outcome measure was a thromboembolic event within 90 days of surgery. Of the 168 patients, eight (4.8%) had a confirmed symptomatic deep-vein thrombosis and one (0.6%) a fatal pulmonary embolism. Of the 28 variables tested, age > 60 years, higher American Society of Anesthesiologists grade and metastatic tumour were independent risk factors for VTE. The overall rate of symptomatic VTE was not significantly different between patients who received chemical thromboprophylaxis and those who did not. Knowledge of these risk factors may be of value in improving the surgical outcome of patients with a malignancy of the lower limb.
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Affiliation(s)
- S M Kim
- Samsung Changwon Hospital, Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Changwon 630-522, Korea
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19
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Park KH, Sohn JH, Lee S, Park JH, Kang SY, Kim HY, Park IH, Park YH, Im YH, Lee HJ, Hong DS, Park S, Shin SH, Kwon HC, Seo JH. A randomized, multi-center, open-label, phase II study of once-per-cycle DA-3031, a biosimilar pegylated G-CSF, compared with daily filgrastim in patients receiving TAC chemotherapy for early-stage breast cancer. Invest New Drugs 2013; 31:1300-6. [PMID: 23677653 DOI: 10.1007/s10637-013-9973-4] [Citation(s) in RCA: 21] [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] [Received: 02/05/2013] [Accepted: 05/07/2013] [Indexed: 11/26/2022]
Abstract
BACKGROUNDS A pegylated form of recombinant granulocyte-colony stimulating factor (G-CSF) was developed for prophylactic use in breast cancer. The aim of this study was to evaluate the efficacy and safety of once-per-cycle DA-3031 in patients receiving chemotherapy for breast cancer. METHODS A total of 61 patients receiving docetaxel, doxorubicin, and cyclophosphamide (TAC) chemotherapy were randomized in cycle 1 to receive daily injections of filgrastim (100 μg/m(2)) or a single subcutaneous injection of pegylated filgrastim DA-3031 at a dose of either 3.6 mg or 6 mg. RESULTS The mean duration of grade 4 neutropenia in cycle 1 was comparable among the treatment groups (2.48, 2.20, and 2.05 days for filgrastim, DA-3031 3.6 mg and 6 mg, respectively; P=0.275). No statistically significant differences were observed in the incidence of febrile neutropenia between the treatment groups (9.5 %, 15.0 %, and 5.0 % for filgrastim, DA-3031 3.6 mg and 6 mg, respectively; P=0.681) in cycle 1. The incidences of adverse events attributable to G-CSF were similar among the treatment groups. CONCLUSIONS Fixed doses of 3.6 mg or 6 mg DA-3031 have an efficacy comparable to that of daily injections of filgrastim in ameliorating grade 4 neutropenia in patients receiving TAC chemotherapy.
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Affiliation(s)
- K H Park
- Division of Oncology/Hematology, Department of Internal medicine, Korea University College of Medicine, 97 Guro-dong Gil, Guro-gu, Seoul, Korea
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Shin SH, Baril DT, Chaer RA, Makaroun MS, Marone LK. Cryoplasty offers no advantage over standard balloon angioplasty for the treatment of in-stent stenosis. Vascular 2013; 21:349–54. [DOI: 10.1177/1708538112473968] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In-stent restenosis is the primary failure mode of endovascular treatment of occlusive disease in the femeropopliteal segment. Cryoplasty has been proposed to reduce intimal hyperplasia through induction of apoptosis. We sought to evaluate the efficacy of cryoplasty for treatment of in-stent restenosis compared to conventional balloon angioplasty (CBA). After IRB approval, a retrospective record review was performed of reinterventions for in-stent restenosis by a single vascular surgery group at a university hospital. Reinterventions involving cryoplasty and CBA were evaluated at 1, 3, 6 and 12 months after intervention with duplex imaging to identify significant recurrent stenosis utilizing established velocity criteria. Data collected included basic demographic information and comorbidities as well as time to restenosis. Statistical analysis was performed using Kaplan–Meier survival curves with the log rank test, Wilcoxon rank test, and Cox proportional hazards models. From December 2004 to November 2007, 76 reinterventions were performed using CBA (n = 39) or cryoplasty (n = 37) for in-stent restenosis without placement of additional stents. Periprocedural technical success (>30% residual stenosis) was 100% for both groups, with no complications. The two cohorts were statistically similar in mean age, gender, comorbidities, tobacco use and use of statins, aspirin and Plavix. However, the mean lesion length was significantly longer in the cryoplasty cohort (CBA: 140.9 mm, Cyro: 191.7 mm; P = 0.032). The mean time to recurrent stenosis or need for additional secondary intervention was significantly shorter for the cyroplasty cohort than for the CBA, 4.09 and 10.79 months, respectively ( P = .0001). Recurrent stenosis-free survival was significantly lower in the cyroplasty cohort at 3 months (CBA: 96.9%, Cyro: 88.9%) and 6 months (CBA: 84.0%, Cyro: 43.8%; P = .0089). Cyroplasty as a modality for treatment of in-stent stenosis in the femoropopliteal segment offers no benefit over CBA.
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21
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Yoo WJ, Shin SH, Han KT, Jeon D, Hong S, Kim SG, Sim HI, Jang KW, Cho S, Park BG, Lee B. Feasibility study on development of Cerenkov fiber-optic dosimeter for radiotherapy application. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:485-487. [PMID: 24109729 DOI: 10.1109/embc.2013.6609542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
To obtain real-time dose information in photon-beam therapy using a clinical linear accelerator, we fabricated a novel Cerenkov fiber-optic dosimeter using two plastic optical fibers without employing a scintillator. In this study, the light intensity and spectrum of Cerenkov radiation induced by a high-energy photon beam were measured as functions of the irradiation angle and the length difference between the two plastic optical fibers in the dosimeter probe. Also, we obtained a percentage depth dose curve for a 6 MV photon beam with a field size of 10 × 10 cm(2) according to the depth of the solid water phantom. Based on the results of this study, it is anticipated that the proposed Cerenkov fiber-optic dosimeter can be developed as a useful dosimeter to accurately obtain dose information prior to conducting radiotherapy.
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Jo WK, Shin SH, Hwang ES. Removal of dimethyl sulfide utilizing activated carbon fiber-supported photocatalyst in continuous-flow system. J Hazard Mater 2011; 191:234-239. [PMID: 21592662 DOI: 10.1016/j.jhazmat.2011.04.069] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/12/2011] [Accepted: 04/16/2011] [Indexed: 05/30/2023]
Abstract
The present study investigated the adsorptional photocatalytic decomposition (APD) efficiency of activated carbon fiber-supported TiO(2) (ACF/TiO(2)) in a continuous-flow reactor for the removal of dimethyl sulfide (DMS). The SEM analysis identified that the ACF/TiO(2) exhibited the same tridimensional shape as uncovered ACF and that a TiO(2) photocatalyst could be embedded in the surface of the ACF. In the absence of UV light, the time-series removal efficiencies by ACF and the ACF/TiO(2) units exhibited a similar pattern, which decreased gradually as it reached close to zero. However, the APD efficiency determined via the ACF/TiO(2) with UV light remained at nearly 60% during the remaining courses of the 13-h period, after decreasing from a maximum APD of 80%. The APD efficiencies depended upon the weights of the TiO(2) embedded into the ACFs, the UV sources, the relative humidity, and DMS input concentrations. During a long-term (219-h) APD test, the APD efficiencies dropped from 80% to ca 60% within 1h after the initiation of the APD process and then fluctuated between 52% and 60%. No byproducts were measurable or observable in the effluent gas or on the ACF/TiO(2) surface. Consequently, the continuous-flow ACF/TiO(2) system could effectively be applied to control DMS without any significant functional deterioration.
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Affiliation(s)
- W K Jo
- Department of Environmental Engineering, Kyungpook National University, Daegu, Republic of Korea.
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23
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Shin SH, Baril D, Chaer R, Rhee R, Makaroun M, Marone L. Limitations of the Outback LTD re-entry device in femoropopliteal chronic total occlusions. J Vasc Surg 2011; 53:1260-4. [PMID: 21215571 DOI: 10.1016/j.jvs.2010.10.127] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2010] [Revised: 10/28/2010] [Accepted: 10/29/2010] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Subintimal recanalization for the treatment of femoropopliteal chronic total occlusions (CTO) occasionally requires re-entry devices to access the true lumen distally, but limited information is available on factors predicting the success or failure of these devices. We evaluated the Outback LTD re-entry device (LuMend, Redwood City, Calif; acquired by Cordis Corp, Miami Lakes, Fla). METHODS A retrospective review of patients with femoropopliteal CTO from August 2006 to August 2009 was performed. Age, gender, occlusion length, site of re-entry, and the angle of the aortic bifurcation were recorded. Procedural angiograms were used to assign a calcification score (none, mild, moderate, severe) at the re-entry site. Univariate and multivariate logistic regression analyses were used to identify factors predicting failure of re-entry into the true lumen. RESULTS Of 249 CTOs treated, the re-entry device was used 52 times (20.9%): 47 superficial femoral artery (SFA) occlusions and 5 combined SFA and popliteal artery occlusions (33 TransAtlantic InterSociety Consensus II type C and 18 type D lesions). Of 48 procedures with available angiograms for review, the target re-entry site was at the adductor canal in 30 (62.5%), the above-knee popliteal artery in 13 (27.1%), behind the knee joint in 4 (8.3%), and the mid-SFA in 2 (4.2%). Patients (54% men) were a mean age of 73.1 years. Re-entry was successful in 34 attempts (64.5%). Causes of failure included inability to re-enter the true lumen in 11 (61.1%), difficulty tracking the device over a wire in 3 (16.7%), acute angle of aortic bifurcation in 2 (11.1%), mechanical failure of the device in 1 (5.6%), and difficulty tracking the device through the lesion in 1 (5.6%). Moderate or severe calcification at the site of re-entry was the only significant predictor of failure (odds ratio, 6.3; 95% confidence interval, 1.45-24.48; P = .01). An aortic bifurcation angle ≥40° did trend toward predicting success (odds ratio, 0.23; 95% confidence interval, 0.05-1.02; P = .054). CONCLUSIONS Although the Outback re-entry device can be successful in extending the applicability of endovascular management to difficult femoropopliteal occlusions, it is not uniformly successful in current clinical practice. Significant calcification at the proposed re-entry site is a strong predictor of failure.
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Affiliation(s)
- Susanna H Shin
- Division of Vascular Surgery, University of Pittsburgh Medical Center, Presbyterian, 200 Lothrop St, A-1017, Pittsburgh, Pa 15213, USA.
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24
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Jung SY, Kim SK, Kwon Y, Kim EA, Ko KL, Park IH, Lee KS, Kang KW, Noh DY, Shin SH, Jeong JS, Lee S, Kim SW, Kang HS, Ro J. Abstract P2-09-01: Serial [18F] FDG-PET after the 2nd Cycle of Preoperative Chemotherapy Is Predictive for Pathological Complete Response in Stage II/III Breast Cancer. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p2-09-01] [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: 11/16/2022]
Abstract
Abstract
Purpose: One of substudies of the prospective trials aimed to evaluate the usefulness of serial [18F] 2-fluoro-2-deoxy-D-glucose-positron emission tomography ([18F] FDG-PET) for predicting pathological complete response (pCR) in stage II/III breast cancer with preoperative chemotherapy (PST).
Methods: Serial PET was undertaken in 57 breast cancer patients enrolled in three different neoadjuvant trials: 35 patients from a phase II study with paclitaxel/gemcitabine/trastuzumab with ClinicalTrial.gov NCT 00532857, 9 patients from a phase Ib study with paclitaxel/gemcitabine/lapatinib with ClinicalTrial.gov NCT 01133912, and 13 patients from a phase Ib with paclitaxel/gemcitabine/sunitinib with ClinicalTrial.gov NCT0 1070706. All patients received 6 cycles of PST followed by surgery and radiotherapy. We assessed the peak standardized uptake value (SUVp) in the primary tumor at the baseline and after the 2nd cycle (37 patients) or after completion (20 patients) of 6 cycles of PST, and calculated the reduction rate (RR) of the SUVp. Pathological response was classified into pCR and non-pCR. To compare the mean of SUVp and RR of SUVp between different response groups, two-way tables and chi-square tests were used
Results: Fifteen (40.6%) of 37 patients who took repeat PET after the 2nd PST and 15 (75%) of 20 patients after completion of PST achieved a pCR with overall pCR rate of 52.6% in the primary tumor. In patients with repeat PET after the 2nd PST, post-treatment SUVp and RR of the SUVp in primary tumors were significantly different by the pathological response (post-treatment SUVp, 1.54 ± 0.63 in pCR vs 2.54 ± 1.06 in non-pCR, P=0.002; RR of the SUVp, 79.2% ± 11.9% in pCR vs 68.9% ± 15.4% in non-pCR, P=0.03). However, in patients with repeat PET after completion of PST, there were no statistical differences of these values (post-treatment SUVp, 1.09 ± 0.63 in pCR vs 1.29 ± 0.36 in non-pCR, P=0.42; RR of the SUVp, 83.7% ± 14.0% in pCR vs 67.5% ± 21.1% in non-pCR, P=0.17)
Conclusions: This study demonstrated that repeat PET after the 2nd cycle of PST, not after completion of PST could predict pCR in stage II/III breast cancer with preoperative chemotherapy. Acknowledgement NCC Grant #0910320.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P2-09-01.
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Affiliation(s)
- S-Y Jung
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - S-K Kim
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - Y Kwon
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - E-A Kim
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - KL Ko
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - IH Park
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - KS Lee
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - KW Kang
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - D-Y Noh
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - SH Shin
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - JS Jeong
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - S Lee
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - SW Kim
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - H-S Kang
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
| | - J. Ro
- National Cancer Center, Korea; Seoul National University College of Medicine, Korea
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Shin SH, Baril D, Chaer R, Makaroun M, Rhee R, Marone L. Cryoplasty Offers No Advantage Over Standard Balloon Angioplasty for the Treatment of In-Stent Restenosis. J Vasc Surg 2010. [DOI: 10.1016/j.jvs.2010.06.027] [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: 11/26/2022]
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Shin SH, Baril D, Chaer R, Rhee R, Makaroun M, Marone L. Limitations of Re-entry Devices in Lower Extremity Chronic Total Occlusions. J Vasc Surg 2010. [DOI: 10.1016/j.jvs.2010.01.009] [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: 10/19/2022]
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Shin SH, Park YB. Effects of changes in the physical properties of the central elastic artery on haemodynamic characteristics during ageing. Proc Inst Mech Eng H 2009; 223:525-35. [PMID: 19623906 DOI: 10.1243/09544119jeim502] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The change in blood pressure during the ageing process depends on the changes in the physical properties of the arterial system. The conventional method of studying ageing, i.e. observing a focus group of people, requires long periods of time and also makes it difficult to separate the ageing effect from the effects of complex geriatric diseases. Therefore, a computer simulation was used to analyse how physical property changes in the central elastic artery during the ageing process affect the blood pressure and input impedance of the blood vessels. An increase in the arterial stiffness and an increase in the wall thickness increased the systolic pressure and the pulse pressure. An increase in the lumen diameter decreased the mean pressure. The pulse wave velocity and shape were changed in the central elastic artery group but were not changed outside this group. Also, the input impedance at a low frequency was increased in the central elastic artery group but was not changed outside this group. In this study, the way in which changes in specific physical properties of the artery affect the haemodynamic characteristics during ageing was analysed.
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Affiliation(s)
- S H Shin
- Department of Oriental Biomedical Engineering, Sangji University, Wonju-si, Gangwon-do, 220-702, Republic of Korea.
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Stout CL, Richardson AI, Shin SH, Shah RM, Panneton JM. PP14. In-stent Restenosis after Carotid Angioplasty and Stenting: Post-Carotid Endarterectomy Lesions Fare Equally as Well as True De Novo Lesions. J Vasc Surg 2009. [DOI: 10.1016/j.jvs.2009.02.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sampaio SM, Shin SH, Panneton JM, Andrews JC, Bower TC, Cherry KJ, Duncan AA, Kalra M, Gloviczki P. Intraoperative Endoleak During EVAR: Frequency, Nature, and Significance. Vasc Endovascular Surg 2009; 43:352-9. [PMID: 19351648 DOI: 10.1177/1538574409333581] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: Endoleaks are critical complications of endovascular abdominal aortic aneurysm repair (EVAR). This study sought to determine the frequency and nature of intraoperative endoleaks and their impact on postoperative endoleak-related events. Methods: A retrospective chart review was performed of all patients who underwent EVAR at our institution. The impact of intraoperative endoleaks on postoperative endoleak rates and endoleak-related reintervention rates were assessed. Results: From December 18, 1996, to May 21, 2003, 241 patients underwent EVAR. An endoleak was observed during 126 (52.3%) procedures. Type I endoleaks were observed in 63 (26.1%) cases: 35 proximal and 31 distal endoleaks (3 cases at both attachments). Angioplasty, additional cuff placement, or stenting corrected 59 (89.4%) of these endoleaks. A total of 71 type II intraoperative endoleaks (29.5%) and 8 type IV endoleaks (3.3%) were observed without any attempted corrective maneuvers. Ten type III endoleaks (4.2%) occurred but all resolved with angioplasty or additional cuff placement. In all, 86 (35.7%) endoleaks persisted on completion angiogram. Patients with a type I or type II intraoperative endoleak were more likely to have an endoleak at 1.5 years (31.4% vs. 21.6%, P = .018). Reinterventions were required more often after an intraoperative type I endoleak (10% vs. 4%, P = .003). Patients with intraoperative endoleaks demonstrated a trend toward less postoperative aneurysm diameter reduction at 2 years (43.8% vs. 74.5%, P = .104). Conclusion: The presence of a type I or a type II endoleak during EVAR significantly increases the likelihood of a postoperative endoleak and should prompt a high degree of suspicion during follow-up.
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Kwack MH, Shin SH, Kim SR, Im SU, Han IS, Kim MK, Kim JC, Sung YK. l-Ascorbic acid 2-phosphate promotes elongation of hair shafts via the secretion of insulin-like growth factor-1 from dermal papilla cells through phosphatidylinositol 3-kinase. Br J Dermatol 2009; 160:1157-62. [PMID: 19416266 DOI: 10.1111/j.1365-2133.2009.09108.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND l-Ascorbic acid 2-phosphate (Asc 2-P), a derivative of l-ascorbic acid, promotes elongation of hair shafts in cultured human hair follicles and induces hair growth in mice. OBJECTIVES To investigate whether the promotion of hair growth by Asc 2-P is mediated by insulin-like growth factor-1 (IGF-1) and, if so, to investigate the mechanism of the Asc 2-P-induced IGF-1 expression. METHODS Dermal papilla (DP) cells were cultured and IGF-1 level was measured by reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay after Asc 2-P treatment in the absence or presence of LY294002, a phosphatidylinositol 3-kinase (PI3K) inhibitor. Also, hair shaft elongation in cultured human scalp hair follicles and proliferation of cocultured keratinocytes were examined after Asc 2-P treatment in the absence or presence of neutralizing antibody against IGF-1. In addition, keratinocyte proliferation in cultured hair follicles after Asc 2-P treatment in the absence or presence of LY294002 was examined by Ki-67 immunostaining. RESULTS IGF-1 mRNA in DP cells was upregulated and IGF-1 protein in the conditioned medium of DP cells was significantly increased after treatment with Asc 2-P. Immunohistochemical staining showed that IGF-1 staining is increased in the DP of cultured human hair follicles by Asc 2-P. The neutralizing antibody against IGF-1 significantly suppressed the Asc 2-P-mediated elongation of hair shafts in hair follicle organ culture and significantly attenuated Asc 2-P-induced growth of cocultured keratinocytes. LY294002 significantly attenuated Asc 2-P-inducible IGF-1 expression and proliferation of follicular keratinocytes in cultured hair follicles. CONCLUSIONS These data show that Asc 2-P-inducible IGF-1 from DP cells promotes proliferation of follicular keratinocytes and stimulates hair follicle growth in vitro via PI3K.
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Affiliation(s)
- M H Kwack
- Department of Immunology, Kyungpook National University, Daegu, Korea
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Abstract
In intubated patients the presence of a cuff leak (CL) is used as a predictor of successful extubation. CL is proposed to indicate laryngeal edema and predict which patients may develop complications such as postextubation stridor and eventual reintubation. Our objective was to evaluate the reliability of CL in our population of critically ill trauma patients. A retrospective chart review was performed of patients admitted to the trauma service who required mechanical ventilation. All patients undergo the CL test by a single respiratory therapist team before attempted extubation. Data collected included body mass index (BMI), endotracheal tube (ETT) size, length of time of mechanical ventilation, tidal volumes (Vt), and the size of the patient's trachea based on CT scan. The test is performed by the respiratory therapists and involves measuring expired Vt before and after the ETT cuff has been deflated and listening for an audible leak. A positive test result is defined as a CL greater than 10 per cent of Vt or, when volumes are not available, as audible air expired. From October 2005 to May 2006, 150 mechanically ventilated patients were identified and 49 charts were available for review. Forty-one patients had a cuff leak (+CL), whereas eight did not (-CL). The two cohorts were similar in age (+CL = 36.5 years, -CL = 38.1 years, P = 0.82), male gender (+CL = 70%, -CL = 50%, P = 0.25) ETT size (+CL = 7.4, -CL = 7.4, P = 0.57), and BMI (+CL = 28 kg/m2, -CL = 27 kg/m2, P = 0.71). The average tracheal diameter (+CL = 17.4 mm, -CL = 17.5 mm, P = 0.90) as well as the ratio of ETT and tracheal diameter was similar for the two cohorts (+CL = 0.65, -CL = 0.64, P = 0.73). Four patients (10%) in the +CL cohort failed extubation, whereas none of the -CL cohort failed (0%) (P = 0.40). The CL test does not reliably identify those patients who will require reintubation in our trauma population. In addition, the ratio of ETT and tracheal diameter is not predictive of successful extubation.
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Affiliation(s)
- Susanna H Shin
- Department of Surgery, Eastern Virginia Medical School, Norfolk, Virginia, USA
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Koo KI, Bae JH, Lee CH, Yoon CD, Pyun JH, Shin SH, Jeon YC, Bae MK, Jang HO, Wood WG, Yun I. The effect of bupivacaine.HCl on the physical properties of neuronal membranes. Protoplasma 2008; 234:3-12. [PMID: 18797982 DOI: 10.1007/s00709-008-0017-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Accepted: 08/25/2008] [Indexed: 05/26/2023]
Abstract
Fluorescent probe techniques were used to evaluate the effect of bupivacaine.HCl on the physical properties (transbilayer asymmetric lateral and rotational mobilities, annular lipid fluidity and protein distribution) of synaptosomal plasma membrane vesicles (SPMVs) isolated from bovine cerebral cortex. An experimental procedure was used based on selective quenching of both 1,3-di(1-pyrenyl)propane (Py-3-Py) and 1,6-diphenyl-1,3,5-hexatriene (DPH) by trinitrophenyl groups, and radiationless energy transfer (RET) from the tryptophans of membrane proteins to Py-3-Py. Bupivacaine.HCl increased the bulk lateral and rotational mobilities, and annular lipid fluidity in SPMVs lipid bilayers, and had a greater fluidizing effect on the inner monolayer than that of the outer monolayer. The magnitude of increasing effect on annular lipid fluidity in SPMVs lipid bilayer induced by bupivacaine.HCl was significantly far greater than magnitude of increasing effect of the drug on the lateral and rotational mobilities of bulk SPMVs lipid bilayer. It also caused membrane proteins to cluster. These effects of bupivacaine.HCl on neuronal membranes may be responsible for some, though not all, of the local anesthetic actions of bupivacaine.HCl.
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Affiliation(s)
- K I Koo
- Department of Dental Pharmacology and Biophysics, Pusan National University, Busan, 602-739, South Korea
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Kwon SC, Lyo IU, Shin SH, Park JB, Kim Y. Coil Knotting during Endovascular Coil Embolization for Ruptured MCA Aneurysm. A Case Report. Interv Neuroradiol 2008; 14:331-4. [PMID: 20557732 PMCID: PMC3396018 DOI: 10.1177/159101990801400315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2008] [Accepted: 07/23/2008] [Indexed: 07/29/2023] Open
Abstract
SUMMARY Complications during coil embolization of cerebral aneurysms include thromboembolic events, hemorrhagic complications related to procedural aneurysmal rupture and parent vessel perforation, and coil-related complications. The present report describes a rare coil-related complication involving spontaneous coil knotting.
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Affiliation(s)
- S C Kwon
- Ulsan University Hospital; Republic of Korea
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Shin SH, Holmes H, Bao R, Jiminez C, Evans D, Lee JE, Perrier N. Parathyroidectomy for elderly patients is safe. J Am Coll Surg 2008. [DOI: 10.1016/j.jamcollsurg.2008.06.101] [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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Kang S, Kim KH, Kim YT, Kim YT, Kim JH, Song YS, Shin SH, Ryu HS, Han JW, Kang JH, Park SY. Safety and immunogenicity of a vaccine targeting human papillomavirus types 6, 11, 16 and 18: a randomized, placebo-controlled trial in 176 Korean subjects. Int J Gynecol Cancer 2007; 18:1013-9. [PMID: 17986242 DOI: 10.1111/j.1525-1438.2007.01123.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Human papillomavirus (HPV) is a major causative agent of anogenital warts and a necessary cause of cervical cancer. This report will serve to assess the safety and immunogenicity of quadrivalent (types 6, 11, 16, and 18) HPV L1 virus-like particle (VLP) vaccine in the Korean population. We performed a randomized, double-blind, placebo-controlled study in 176 volunteers aged 9-23 years. Using a 2:1 ratio for randomization, 117 women were assigned to quadrivalent HPV (20 mug type 6, 40 mug type 11, 40 mug type 16, and 20 mug type 18) vaccine and 59 women to placebo. Individuals received vaccine at day 1, month 2, and month 6 and provided blood samples for analysis at enrollment at month 7. Analyses were done as specified in the study protocol. Quadrivalent HPV vaccine was generally well tolerated, with no vaccine-related serious adverse experiences. Quadrivalent HPV vaccine induced seroconversion for each vaccine-related HPV type. At month 7, vaccine-induced type-specific antibody titer was high. In conclusion, administration of quadrivalent HPV VLP vaccine to Korean women aged 9-23 years was generally well tolerated and highly immunogenic.
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Affiliation(s)
- S Kang
- Branch of Uterine Cancer Research, National Cancer Center, Goyang, Korea
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Kim SJ, Kim MS, Lee JW, Lee CH, Yoo H, Shin SH, Park MJ, Lee SH. Dihydroartemisinin enhances radiosensitivity of human glioma cells in vitro. J Cancer Res Clin Oncol 2005; 132:129-35. [PMID: 16273420 DOI: 10.1007/s00432-005-0052-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Accepted: 10/11/2005] [Indexed: 11/28/2022]
Abstract
PURPOSE The antimalarial agent, artemisinin, also confers cancer-specific cytotoxic effects by reacting with ferrous iron atoms to form free radicals. Here, we investigated the radiosensitizing effects of dihydroartemisinin on glioma cells and assessed some possible mechanisms for these effects. MATERIALS AND METHODS U373MG glioma cells treated with various concentrations of dihydroartemisinin plus radiation, and efficiency of radiosensitization was assessed by clonogenic survival assay. Expression and activity of antioxidant enzymes, glutathione-S-transferase (GST) were quantified by western blot and enzymatic activity analyses, respectively. RESULTS Dihydroartemisinin showed higher cytotoxicity in the glioma cell lines than in the liver, breast or cervical cancer cell lines. In clonogenic survival assays, treatment with dihydroartemisinin alone dose-dependently reduced the number of U373MG colonies, while treatment with dihydroartemisinin plus gamma-irradiation showed far lower clonal survival than cultures treated with radiation or dihydroartemisinin alone. The radiosensitizing effect of dihydroartemisinin was blocked significantly by the free radical scavengers, NAC and TIRON, indicating association with dihydroartemisinin-induced ROS generation. In addition, the radiation-induced expression of endogenous GST was suppressed by treatment with dihydroartemisinin. The radiosensitizing effect of dihydroartemisinin was also markedly enhanced by the addition of holotransferrin CONCLUSION Taken together, our results strongly suggest that dihydroartemisinin triggers production of ROS and inhibits GST activity, leading to effective and therapeutically relevant radiosensitization of human glioma cells.
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Affiliation(s)
- S J Kim
- Research Institute and Hospital, National Cancer Center, 411-769 Gyeonggi, Goyang, South Korea
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Yang HK, Kim MC, Kim YW, Kim YI, Kim EK, Kim HH, Park KK, Bae JM, Baik HG, Sul JY, Shin SH, Lee YB, Lee JM, Lee JH, Lee HJ, Jeon HM, Cho GS, Choi SH, Choi YB, Han SU, Han HS, Hur KY, Hyung WJ, Hong BH. Nationwide Survey of Laparoscopic Gastric Surgery in Korea. ACTA ACUST UNITED AC 2004. [DOI: 10.5230/jkgca.2004.4.3.196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- H K Yang
- Seoul National University, Korea
| | | | - Y W Kim
- National Cancer Center, Korea
| | - Y I Kim
- Ewha Woman's University, Korea
| | - E K Kim
- Catholic University of Korea, Korea
| | - H H Kim
- Seoul National University, Korea
| | | | - J M Bae
- National Cancer Center, Korea
| | | | - J Y Sul
- Chungnam National University, Korea
| | | | - Y B Lee
- Changwon Fatima Hospital, Korea
| | - J M Lee
- Jeonju Presbyterian Medical Center, Korea
| | - J H Lee
- Ewha Woman's University, Korea
| | - H J Lee
- Seoul National University, Korea
| | - H M Jeon
- Catholic University of Korea, Korea
| | - G S Cho
- Soonchunhyang University, Korea
| | | | | | | | - H S Han
- Seoul National University, Korea
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Shin SH. Glovax's perspective: opportunities and approaches to vaccine business in Asia. Dev Biol (Basel) 2003; 110:31-4. [PMID: 12477304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Glovax Co., Ltd. has focused on regional population needs, and assessed potentially interesting vaccine candidates for their safety, efficacy and cost-effectiveness. Economic analysis was made to identify the area of high commercial potential based on quantity demands and pricing flexibility. Epidemiological data on the target diseases were reviewed so that we could identify the vaccines of more limited interests worldwide but still of high significance in regional public health. Several viral vaccine products were selected as our priority including Japanese encephalitis and Hepatitis A vaccines. Extensive safety and clinical studies have been projected. To ensure that a safe and effective vaccine be supplied at the same quality level, new manufacturing facilities are being constructed in our region. Several approaches have been made to overcome technical, financial, and managerial obstacles. Close partnerships with industry, biomedical community and regulatory agencies may enhance the viability of our approach to be a successful vaccine player in this region.
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Affiliation(s)
- S H Shin
- Clinical Research & Regulatory Affairs, Glovax Co., Ltd., Seoul, Korea.
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Shin SH, Kim NK, Hwang JH, Park SW, Kim HS, Chung KW. Genetic variation at five STR loci (D10S2325, D13S325, D20S470, D18S51, and D19S253) in Korean population. J Forensic Sci 2002; 47:1161-2. [PMID: 12353570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Affiliation(s)
- S H Shin
- Department of Biology, College of Medicine, Pochon CHA University, Sungnam, Korea
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Cho SG, Kim MY, Kim HJ, Kim YS, Choi W, Shin SH, Hong KC, Kim YB, Lee JH, Suh CH. Chronic hepatitis: in vivo proton MR spectroscopic evaluation of the liver and correlation with histopathologic findings. Radiology 2001; 221:740-6. [PMID: 11719670 DOI: 10.1148/radiol.2213010106] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [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: 01/16/2023]
Abstract
PURPOSE To correlate the in vivo hydrogen 1 ((1)H) magnetic resonance (MR) spectroscopic features of the chronic hepatitis-involved liver with the histopathologic stages of fibrosis. MATERIALS AND METHODS Seventy-five patients with chronic hepatitis were examined with (1)H MR spectroscopy, which was performed in the right hepatic lobe. The peak areas of glutamine and glutamate complex (Glx), phosphomonoesters (PME), glycogen and glucose complex (Glyu), and lipid were measured on the liver spectra. The histopathologic features were correlated with the in vivo (1)H MR spectroscopic findings at each stage of chronic hepatitis. Fifteen healthy volunteers also were included as a control group. RESULTS (1)H MR spectroscopy depicted Glx, PME, Glyu, and lipid in all livers. In the normal livers, the calculated mean (+/- SD) relative metabolite-to-lipid ratios of Glx, PME, and Glyu were 0.14 +/- 0.04, 0.03 +/- 0.01, and 0.21 +/- 0.04, respectively. The mean value of each metabolite-to-lipid ratio was significantly different between all stages of chronic hepatitis, and with the exception of the mean ratio at the interval between stages 0 and 1 (P > .05), the mean value increased significantly with increasing stage (P < .05). A pronounced peak was demonstrated at 3.9-4.1 ppm at (1)H MR spectroscopy of all stages of chronic hepatitis except stage 0. CONCLUSION The increased Glx, PME, and Glyu levels relative to the lipid content with chronic hepatitis indicated the severity of fibrosis and thus were concordant with the histopathologic stages. In vivo (1)H MR spectroscopy might be a substitute for liver biopsy in the diagnosis and staging of chronic hepatitis.
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Affiliation(s)
- S G Cho
- Department of Radiology, Inha University College of Medicine, 7-206 3rd St, Shinheung-Dong, Choong-Gu, Inchon 400-711, Korea.
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Jeong JS, Lee HJ, Jung JS, Shin SH, Son YJ, Yoon JH, Lee SH, Lee HS, Yun I, Hwang TH. Characterization of inwardly rectifying K(+) conductance across the basolateral membrane of rat tracheal epithelia. Biochem Biophys Res Commun 2001; 288:914-20. [PMID: 11688996 DOI: 10.1006/bbrc.2001.5831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The rat primary cultured-airway monolayer has been an excellent model for deciphering the ion channel after nystatin permeabilization of its basolateral or apical membrane. Inwardly rectifying K(+) currents were characterized across the basolateral membrane in symmetrical HCO(-)(3)-free high K(+) Ringer's solution (125 mM) in this study. The potency of K(+) channel inhibitors against K(+) conductance was Ba(2+) (IC(50) = 5 microM) > Cs(+) (IC(50) = 2 mM) >> glybenclamide (IC(50) > 5 mM) >> TEA (IC(50) >> 100 mM). The application of basolateral Cs(+) changed K(+) conductance into an oscillating current, and its frequency (holding voltage = -100 mV) increased with increase in concentration of basolateral Cs(+) (0.05-5 mM) and in degree of hyperpolarization. Addition of basolateral Cs(+) blocked inward current strongly at -100 mV and hardly at all at -60 mV, giving a sharp curvature to the I-V relation of the IRK current. RT-PCR, Western blotting, and immunohistochemical analyses showed that Kir2.1 might be present in basolateral membrane of tracheal epithelia and plasma membrane of pulmonary alveolar cells.
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Affiliation(s)
- J S Jeong
- Department of Pathology, Dong-A Medical College, Busan, 602-103, South Korea
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Abstract
Hepatocellular carcinoma (HCC) remains chemoresistant and, therefore, the principal treatment of HCC is surgical resection. After a 9-year-old boy with huge HCC with lung metastasis received the 5 cycles of chemotherapy (cisplatin and Adriamycin), the lung metastasis had been resolved completely and the size of HCC in liver had decreased. Right hepatic trisegmentectomy was performed, and then the additional 3 cycles of chemotherapy was given. Currently, the patient shows no recurrence of HCC 42 months after surgical extirpation.
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Affiliation(s)
- S I Ahn
- Department of Surgery, Inha University Hospital, Inchon, Korea
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Bista MB, Banerjee MK, Shin SH, Tandan JB, Kim MH, Sohn YM, Ohrr HC, Tang JL, Halstead SB. Efficacy of single-dose SA 14-14-2 vaccine against Japanese encephalitis: a case control study. Lancet 2001; 358:791-5. [PMID: 11564484 DOI: 10.1016/s0140-6736(01)05967-0] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND In China, since 1989, an estimated 120 million children have been immunised with the SA 14-14-2 live-attenuated Japanese encephalitis (JE) vaccine at ages 1, 2, and 6 years. A case-control study of licensed vaccine found two doses to be 98% effective. Subsequently, researchers found that single-dose vaccine efficacy was high; we aimed to confirm this result. METHODS During July 11-24, 1999, 160000 doses of JE vaccine were given to children aged 1-15 years, resident in three districts of Nepal. Several cases of JE were admitted to hospital from early August. We obtained names and addresses of cases with serological evidence of a recent infection from Bheri Zonal Hospital, Nepalgunj. We did a matched case-control study and calculated the odds ratio of vaccination among JE cases and age-sex matched village controls. FINDINGS 20 children, aged 1-15 years, were identified whose illness conformed with the JE case definition and were resident in villages receiving the vaccine. None of 20 JE cases had received JE vaccine compared with 326 of 557 age-sex matched village controls. The efficacy of a single dose of JE vaccine was 99.3% (CI 94.9-100%). INTERPRETATION A single dose of JE vaccine is highly efficacious in preventing Japanese encephalitis when administered only days or weeks before exposure to infection.
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Affiliation(s)
- M B Bista
- Epidemiology and Disease Control Division, Ministry of Health, Kathmandu, Nepal
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Abstract
The purpose of our study was to investigate the pattern of recurrence and the prognostic factors for recurrence of pediatric craniopharyngiomas after radical excision. A series of 36 patients with craniopharyngiomas (21 boys and 15 girls; age range 1-15 years; mean 7.3 years) were reviewed. All patients had undergone radical excision without radiotherapy. The mean follow-up period was 52 months (range 1-149 months). Tumors recurred in 14 patients within 83 months (mean 31.4 months). The overall 5-year recurrence-free survival rate was 55%. Regular neuroimaging follow-up detected tumor recurrence while the lesions were still small before symptoms developed (P<0.05). At the first surgical procedure, the optic nerve/chiasm (n=23) was the most common adhesion site. The most frequent sites of recurrence were the optic nerve/chiasm (n=6) and the pituitary fossa (n=6). Tumor location was the single significant clinical predictor of recurrence. The 5-year recurrence-free survival rate was 39% for those who had an intrasellar tumor component and 81% for those who did not (P<0.05). The Ki-67 labeling indices (LIs) of primary tumors did not have prognostic value for recurrence. Recurrent tumors tended to have higher Ki-67 LIs than their primary counterparts. On the basis of this study, we concluded that craniopharyngiomas with intrasellar components should be followed cautiously and the necessity for regular follow-up should be emphasized, even when the tumor is "totally" resected.
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Affiliation(s)
- S K Kim
- Division of Pediatric Neurosurgery, Cancer Research Institute, Seoul National University Children's Hospital, Korea
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Shin SH, Javidi B. Three-dimensional object recognition by use of a photorefractive volume holographic processor. Opt Lett 2001; 26:1161-1163. [PMID: 18049549 DOI: 10.1364/ol.26.001161] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We present a photorefractive volume holographic processor for recognition of three-dimensional (3D) objects. The templates are recorded by use of a volume hologram in a photorefractive LiNbO(3):Fe crystal located at the Fresnel diffraction region and correlated in real time with a 3D object illuminated by coherent light. Experimental results for recognition of 3D objects are presented and discussed. To the best of our knowledge, this is the first time a photorefractive volume holographic technique for 3D object recognition has been reported.
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Shin SH, Kim DS. Studies on the interfacial characterization of O/W emulsion for the optimization of its treatment. Environ Sci Technol 2001; 35:3040-3047. [PMID: 11478260 DOI: 10.1021/es001592o] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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
Wastewater produced in the form of an o/w emulsion is difficult to treat properly because of its complex behavior. To acquire information for the optimization of emulsion controlling processes, the interfacial features of emulsion systems have been investigated in this work. The surface tension is found to decrease as the oil content is increased, and contact angle is influenced by the hydrophobicity of the substrate. The work of adhesion for substrates with different degrees of hydrophobicity has been estimated from the contact angle and surface tension. Temperature and pH have a significant influence on the turbidity and surface tension, and it is observed that electrophoretic characteristics of oil droplets are closely related with turbidity. Also, effects of inorganic salts and surfactants on the electrokinetic properties of emulsions have been considered, and the influence of coagulant on the stability is discussed through the calculation of potential energy of interaction between oil droplets. Adsorption and electrocoagulation processes have been attempted under various conditions in order to examine the practical treatment efficiencies of emulsion in relation to its interfacial characteristics.
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Affiliation(s)
- S H Shin
- Department of Environmental Science and Engineering, Ewha Womans University, Daehyundong 11-1, Seodaemungu, Seoul 120-750, Korea
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Abstract
Ascorbate is a reducing agent, but it is also known to oxidize cellular components under specific conditions. The mechanism of this oxidative action, however, is not well established. Ascorbate treatment increased lipid peroxide content in PC12 cells, but did not increase quantities of lipid peroxide when homogenates of PC12 cells were treated with ascorbate, suggesting that cellular integrity is required for ascorbate to generate lipid peroxidation. However, dehydroascorbate increased lipid peroxide production in both intact PC12 cells and the cell homogenates. These differential effects of ascorbate and dehydroascorbate on intact cells versus homogenates suggest that the dehydroascorbate in cytosol induces an oxidative stress. Ascorbate in culture medium is rapidly oxidized to dehydroascorbate, which is transported into cells by a glucose transporter (GLUT). The GLUT antagonists wortmannin and cytochalasin B, or a high concentration of glucose, blocked (14)C uptake (from ascorbate) in a time-dependent manner and suppressed lipid peroxide production in PC12 cells. These observations support the concept that ascorbate is oxidized to dehydroascorbate, which is transported into cells via GLUT. The dehydroascorbate induces oxidative stress. The oxidative stress triggered apoptosis according to ceramide production, caspase-3 activation, and TUNEL. We have concluded that ascorbate is taken up after oxidation to dehydroascorbate via a "dehydroascorbate transporter" (GLUT), and the dehydroascorbate generates an oxidative stress which triggers apoptosis. These studies have significant implications for conditions under which a high concentration of ascorbate in a tissue is released during a period of hypoxia (e.g., stroke) and taken up during a reperfusion period as dehydroascorbate. Inhibiting uptake of dehydroascorbate may offer novel therapeutic strategies to alleviate brain damage during a reperfusion period.
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Affiliation(s)
- J H Song
- Department of Physiology, Botterell Hall, Queen's University, Kingston, Ontario, Canada K7L 3N6
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48
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Lee SH, Kim JY, Shin SH, Lee SK, Choi MM, Lee IY, Kim YB, Cho JY, Jin W, Lee KJ. Restriction fragment length dimorphism-PCR method for the detection of extended-spectrum beta-lactamases unrelated to TEM- and SHV-types. FEMS Microbiol Lett 2001; 200:157-61. [PMID: 11425468 DOI: 10.1111/j.1574-6968.2001.tb10708.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/30/2022] Open
Abstract
The diagnostic ability of the restriction fragment length dimorphism-polymerase chain reaction (RFLD-PCR) method was evaluated. Seven primer pairs, newly designed from 44 beta-lactamase genes encoding extended-spectrum beta-lactamases not related to TEM- and SHV-types, were used to differentiate OXA-2, FOX-3, CMY-3, IMP-1, and IMI-1 beta-lactamases. The RFLD-PCR was carried out successfully, and these genes were differentiated by the sizes of their PCR products and by the difference in restriction fragment length when each amplicon was digested with a unique restriction enzyme. This discriminatory detection of the genes was confirmed by sequencing the PCR products.
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Affiliation(s)
- S H Lee
- Department of Genetic Engineering, Youngdong University, Chungbuk, South Korea.
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49
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Cho YU, Kim JY, Choi SK, Hur YS, Lee KY, Kim SJ, Ahn SI, Hong KC, Woo ZH, Han JY, Shin SH. A case of hemorrhagic gallbladder paraganglioma causing acute cholecystitis. Yonsei Med J 2001; 42:352-6. [PMID: 11456404 DOI: 10.3349/ymj.2001.42.3.352] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Gallbladder paraganglioma is a very rare tumor and so far only a few cases have been reported. Most of these were asymptomatic and were found incidentally during operation. Recently, we experienced a gallbladder paraganglioma that gave rise to hemorrhage, which in turn caused acute cholecystitis. Our case involved a 45 year-old female patient complaining of an intermittent right upper abdominal pain. After a preoperative evaluation, cholecystectomy and lymphadenectomy were performed under the impression of gallbladder cancer with acute cholecystitis. Postoperative pathologic examination revealed a hemorrhagic gallbladder paraganglioma accompanied by acute cholecystitis. Immunohistochemical staining of the chief cells for neuron specific enolase, chromogranin and synaptophysin were positive. Sustentacular cells also stained positively for S100 protein.
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Affiliation(s)
- Y U Cho
- Department of Surgery, Inha University College of Medicine, Incheon, Korea
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50
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Affiliation(s)
- S I Ahn
- Department of Surgery, Inha University College of Medicine, 7-206, 3rd Street, Shinheung-Dong, Choong-Gu, Inchon 400-711, South Korea
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