1
|
Hsieh SL, Yang SY, Lin CY, He XY, Tsai CH, Fong YC, Lo YS, Tang CH. MCP-1 controls IL-17-promoted monocyte migration and M1 polarization in osteoarthritis. Int Immunopharmacol 2024; 132:112016. [PMID: 38593506 DOI: 10.1016/j.intimp.2024.112016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/25/2024] [Accepted: 04/03/2024] [Indexed: 04/11/2024]
Abstract
Osteoarthritis (OA) is a low-grade inflammatory joint illness in which monocytes migrate and infiltrate synovial tissue, differentiating into the pro-inflammatory M1 macrophage phenotype. IL-17 is a proinflammatory mediator principally generated by Th17 cells, which is elevated in OA patients; nevertheless, investigators have yet to elucidate the function of IL-17 in M1 polarization during OA development. Our analysis of clinical tissues and results from the open online dataset discovered that the level of M1 macrophage markers is elevated in human OA tissue samples than in normal tissue. High-throughput screening demonstrated that MCP-1 is a potential candidate factor after IL-17 treatment in OA synovial fibroblasts (OASFs). Immunohistochemistry data revealed that the level of MCP-1 is higher in humans and mice with OA than in normal tissues. IL-17 stimulation facilitates MCP-1-dependent macrophage polarization to the M1 phenotype. It also appears that IL-17 enhances MCP-1 synthesis in human OASFs, enhancing monocyte migration via the JAK and STAT3 signaling cascades. Our findings indicate the IL-17/MCP-1 axis as a novel strategy for the remedy of OA.
Collapse
Affiliation(s)
- Shang-Lin Hsieh
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan; Minimally Invasive Spine and Joint Center, Buddhist Tzu Chi General Hospital Taichung Branch, Taichung, Taiwan
| | - Shang-Yu Yang
- Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Chih-Yang Lin
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Xiu-Yuan He
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan; Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Yi-Chin Fong
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan; Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan; Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan; Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan; Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan; Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan; Chinese Medicine Research Center, China Medical University, Taichung, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan; Department of Medical Research, China Medical University Hsinchu Hospital, Hsinchu, Taiwan.
| |
Collapse
|
2
|
Chang PL, Chen MJW, Hsiao PH, Lin CY, Lo YS, Tseng C, Li LY, Lai CY, Chen HT. Navigation-Assisted One-Staged Posterior Spinal Fusion Using Pedicle Screw Instrumentation in Adolescent Idiopathic Scoliosis-A Case Series. Medicina (Kaunas) 2024; 60:300. [PMID: 38399587 PMCID: PMC10889939 DOI: 10.3390/medicina60020300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
Background and Objectives: Adolescent idiopathic scoliosis (AIS) is a prevalent three-dimensional spinal disorder, with a multifactorial pathogenesis, including genetics and environmental aspects. Treatment options include non-surgical and surgical treatment. Surgical interventions demonstrate positive outcomes in terms of deformity correction, pain relief, and improvements of the cardiac and pulmonary function. Surgical complications, including excessive blood loss and neurologic deficits, are reported in 2.27-12% of cases. Navigation-assisted techniques, such as the O-arm system, have been a recent focus with enhanced precision. This study aims to evaluate the results and complications of one-stage posterior instrumentation fusion in AIS patients assisted by O-arm navigation. Materials and Methods: This retrospective study assesses 55 patients with AIS (12-28 years) who underwent one-stage posterior instrumentation correction supported by O-arm navigation from June 2016 to August 2023. We examined radiological surgical outcomes (initial correction rate, loss of correction rate, last follow-up correction rate) and complications as major outcomes. The characteristics of the patients, intraoperative blood loss, operation time, number of fusion levels, and screw density were documented. Results: Of 73 patients, 55 met the inclusion criteria. The average age was 16.67 years, with a predominance of females (78.2%). The surgical outcomes demonstrated substantial initial correction (58.88%) and sustained positive radiological impact at the last follow-up (56.56%). Perioperative complications, including major and minor, occurred in 18.18% of the cases. Two patients experienced a major complication. Blood loss (509.46 mL) and operation time (402.13 min) were comparable to the literature ranges. Trend analysis indicated improvements in operation time and blood loss over the study period. Conclusions: O-arm navigation-assisted one-stage posterior instrumentation proves reliable for AIS corrective surgery, achieving significant and sustained positive radiological outcomes, lower correction loss, reduced intraoperative blood loss, and absence of implant-related complications. Despite the challenges, our study demonstrates the efficacy and maturation of this surgical approach.
Collapse
Affiliation(s)
- Pao-Lung Chang
- Department of Education, China Medical University Hospital, China Medical University, Taichung 404, Taiwan;
| | - Michael Jian-Wen Chen
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Pang-Hsuan Hsiao
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Chia-Yu Lin
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, China Medical University, Yunlin County 651, Taiwan
- Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung 402, Taiwan
| | - Chun Tseng
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, China Medical University, Yunlin County 651, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 404, Taiwan
| | - Ling-Yi Li
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Chien-Ying Lai
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Hsien-Te Chen
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; (M.J.-W.C.); (P.-H.H.); (C.-Y.L.); (Y.-S.L.); (C.T.); (L.-Y.L.); (C.-Y.L.)
- Spine Center, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Sport Medicine, College of Health Care, China Medical University, Taichung 404, Taiwan
| |
Collapse
|
3
|
Lo YS, Shi BL, Lin ETE, Yeh CW, Tsai CH, Chen HT, Zhu ZZ, Qiu Y. Assessing Neurologic Complications in Thoracic Three-Column Osteotomy: A Clinical Application of a Novel MRI-Based Classification Approach. Spine (Phila Pa 1976) 2024:00007632-990000000-00556. [PMID: 38221840 DOI: 10.1097/brs.0000000000004924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/28/2023] [Indexed: 01/16/2024]
Abstract
STUDY DESIGN Retrospective comparative study. OBJECTIVE To investigate the occurrence of neurologic complications in patients undergoing thoracic three-column osteotomy (3CO) utilizing an MRI-based classification that assesses spinal cord shape and the presence of cerebrospinal fluid (CSF) at the curve apex, and evaluate its prognostic capacity for postoperative neurologic deficits. SUMMARY OF BACKGROUND DATA Recent advancements in correction techniques have improved outcomes for severe spinal deformity patients undergoing 3CO. A novel MRI-based spinal cord classification system was introduced, but its validation and association with postoperative complications remain unexplored. MATERIALS AND METHODS Between September 2012 and September 2018, a retrospective analysis was conducted on 158 adult patients with spinal deformities undergoing 3CO. Radiographic parameters were measured. T2-weighted axial MRI was employed to describe spinal cord morphology at the apex. Intraoperative neurophysiologic monitoring (INOM) alerts were recorded, and preoperative and postoperative neurologic functions were assessed using the Frankel score. Categorical data were compared using the Chi-Square or Fisher's exact test. The paired t-test was utilized to assess the mean difference between pre- and postoperative measurements, while the one-way ANOVA and independent t-test were employed for comparative analyses among the different spinal cord types. RESULTS Patients were categorized into three groups: type 1, type 2, and type 3, consisting of 12, 85, and 61 patients. Patients with type 3 morphology exhibited larger Cobb angles of the main curve (P<.001). This disparity persisted both postoperatively and during follow-up (P<.05). IONM alerts were triggered in 32 patients (20.3%), with a distribution of one case in type 1, six cases in type 2, and 22 cases in type 3 morphologies (P<.001). New neurologic deficits were observed in 15 patients (9.5%), with one, three, and 11 cases in type 1, 2, and 3 morphologies, respectively. CONCLUSIONS Patients with type 3 morphology exhibited greater spinal deformity severity, higher likelihood of preoperative neurologic deficits, and an elevated risk of postoperative neurologic complications. This underscores the utility of the classification as a tool for predicting postoperative neurologic complications in patients undergoing thoracic 3CO. LEVEL OF EVIDENCE Level IV.
Collapse
Affiliation(s)
- Yuan-Shun Lo
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Beigang Hospital, China Medical University, Yunlin, Taiwan
| | - Ben-Long Shi
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Erh-Ti Ernest Lin
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Chen-Wei Yeh
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Chun-Hao Tsai
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Hsien-Te Chen
- Division of Spine Surgery, Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Ze-Zhang Zhu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Yong Qiu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| |
Collapse
|
4
|
Hsiao PH, Lin ET, Chen HT, Lo YS. Complete Intradural Interbody Cage Migration in Lumbar Spine Surgery: A Case Report and Literature Review. Medicina (Kaunas) 2023; 59:medicina59050956. [PMID: 37241188 DOI: 10.3390/medicina59050956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/10/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023]
Abstract
Background: Spinal fusion is a common surgery, in which vertebrae are fused to restore spinal stability and eliminate pain during movement. The use of an interbody cage facilitates spinal fusion. However, complete cage migration into the dura matter rarely occurs and can be challenging to manage. Case Presentation: A 44-year-old man presented at our spine center with a history of incomplete paraplegia and cauda equina syndrome that had lasted for 2 years and 4 months. This condition developed after he underwent six lumbar spine surgeries to address lower back pain and right-sided sciatica. A structural allograft kidney-shaped cage was found completely within the dura at the level of the L3 vertebra. Durotomy, cage retrieval, and pedicle screw fixation from the L2 to L4 vertebrae were performed. Numbness in both lower limbs markedly decreased within several days of the operation. After four months following the progressive physical therapy, the patient could partially control both urination and defecation. Five months postoperatively, he could stand with slight assistance. Conclusions: Complete intradural cage migration is a rare and serious complication. To the best of our knowledge, this is the first reported case with such a condition in the literature. Even if treatment is delayed, surgical intervention may salvage the remaining neurologic function and may even lead to partial recovery.
Collapse
Affiliation(s)
- Pang-Hsuan Hsiao
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 404327, Taiwan
- Spine Center, China Medical University Hospital, No. 2, Xueshi Rd., North Dist., Taichung 404327, Taiwan
| | - Erh-Ti Lin
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 404327, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 404327, Taiwan
- Spine Center, China Medical University Hospital, No. 2, Xueshi Rd., North Dist., Taichung 404327, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 404327, Taiwan
- Spine Center, China Medical University Hospital, No. 2, Xueshi Rd., North Dist., Taichung 404327, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin 651012, Taiwan
- Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung 402204, Taiwan
| |
Collapse
|
5
|
Hsieh SL, Lin TL, Lo YS, Chen CY, Chang HW, Chen HT, Fong YC, Tsai CH. Trends and treatments of pelvic and acetabular fractures in Taiwan: facing an aging society. Arch Osteoporos 2023; 18:66. [PMID: 37162585 PMCID: PMC10172239 DOI: 10.1007/s11657-023-01255-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 04/21/2023] [Indexed: 05/11/2023]
Abstract
Pelvic-acetabular fractures lead to high mortality in elders and their association between different groups is not known. Our results indicate that older age with pelvic-acetabular fracture was significantly associated with mortality. This finding may help planning and allocating healthcare resources, risk stratification, and optimizing the treatment of pelvic fractures. PURPOSE Pelvic or acetabular fractures are among main outcomes of low-energy trauma such as falls, especially in older adults. They represent approximately 3-8% of all fractures and are associated with a high mortality rate ranging from 4 to 28%. This study is aimed at comparing the incidence and trends of hip fractures and pelvic-acetabular fractures in the Taiwanese general population, gender differences in adults aged over 65 years, and mortality risk between pelvic or acetabular fractures and hip fractures and surgery trends in patients with these fractures. METHODS A retrospective study was conducted extracting data from the National Health Insurance Research Database of patients diagnosed with hip fracture and pelvic acetabular fracture between 2000 and 2018. RESULTS Older age with pelvic-acetabular fracture was significantly associated with increased mortality. No significant differences were found in comorbidities between the two fracture groups. Results provide clear epidemiological evidence for trends in pelvic-acetabular fractures in Taiwan and demonstrate the need for better strategies to manage these fractures and comorbidities, particularly in older adults. CONCLUSION Findings of this study may aid in planning and allocating healthcare resources, risk stratification, and optimizing the treatment of pelvic fractures among older adults in Taiwan.
Collapse
Affiliation(s)
- Shang-Lin Hsieh
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Tsung-Li Lin
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Department of Sports Medicine, China Medical University, Taichung City, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Department of Orthopedic Surgery, China Medical University Bei Gang Hospital, Beigang, Yunlin County, Taiwan
| | - Chun-Yen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Department of Orthopedic Surgery, Wei Gong Memorial Hospital, Toufen, Miaoli County, Taiwan
| | - Hao Wei Chang
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Department of Orthopedic Surgery, Wei Gong Memorial Hospital, Toufen, Miaoli County, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Department of Sports Medicine, China Medical University, Taichung City, Taiwan
- Department of Biomedical Engineering, College of Biomedical Engineering, Taichung, Taiwan
| | - Yi-Chin Fong
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan
- Department of Sports Medicine, China Medical University, Taichung City, Taiwan
- Department of Biomedical Engineering, College of Biomedical Engineering, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City, Taiwan.
- Department of Sports Medicine, China Medical University, Taichung City, Taiwan.
- Department of Biomedical Engineering, College of Biomedical Engineering, Taichung, Taiwan.
| |
Collapse
|
6
|
Su PH, Huang YH, Yeh CW, Chen CY, Lo YS, Chen HT, Tsai CH. What Are the Key Factors of Functional Outcomes in Patients with Spinopelvic Dissociation Treated with Triangular Osteosynthesis? J Clin Med 2022; 11:jcm11226715. [PMID: 36431191 PMCID: PMC9699448 DOI: 10.3390/jcm11226715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/31/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
For patients with spinopelvic dissociation (SPD), triangular osteosynthesis is the current method for the fixation of the posterior pelvis. This study aimed to assess the recovery process and radiographic parameters associated with the functional outcomes in patients with SPD treated by triangular osteosynthesis. We collected data from 23 patients with SPD. To investigate the key aspect regarding the functional outcomes of these patients, we measured pre- and post-operative parameters, and a statistical analysis adjusted for age, gender, and time windows was used. The radiographic displacement measurement in the pre-operative period showed that the EQ-5D-5L increased by 2.141 per outlet ratio unit. The EQ-5D-5L increased by 1.359 per inlet ratio unit and 1.804 per outlet ratio during the postoperative period. The EQ-VAS increased significantly only with the inlet ratio in the postoperative period (1.270 per inlet ratio). A vertical reduction in SPD during the surgery can achieve more satisfactory outcomes than a horizontal anatomical reduction, in which the horizontal displacement causes inferior functional outcomes.
Collapse
Affiliation(s)
- Po-Han Su
- School of Medicine, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Yi-Hsun Huang
- School of Medicine, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Chen-Wei Yeh
- School of Medicine, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Chun-Yen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, Wei Gong Memorial Hospital, Miaoli 351, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Bei Gang Hospital, Yunlin 651, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Chun-Hao Tsai
- School of Medicine, China Medical University, Taichung 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung 404, Taiwan
- Correspondence:
| |
Collapse
|
7
|
Lin ET, Hsiao PH, Lin CY, Chang CC, Lo YS, Lai CY, Li LY, Chen MJW, Chen YJ, Chen HT. Computed Tomography-Guided Endoscopic Surgery in Lumbar Disc Herniation With High-grade Migration: A Retrospective, Comparative Study. Pain Physician 2022; 25:E777-E785. [PMID: 35901489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Symptomatic herniated intervertebral discs are debilitating. However, surgical management poses a significant challenge for endoscopic spine surgeons, especially in high-grade migrated lesions. OBJECTIVES This study aimed to assess the surgical and clinical outcomes after applying a computed tomography navigated percutaneous endoscopic lumbar discectomy. STUDY DESIGN The data of patients with high-grade lumbar disc migration who underwent percutaneous endoscopic lumbar discectomy at our spine center were retrospectively collected and analyzed from November 2017 to May 2019. The patients were divided into 2 groups based on different workflows, with group O who underwent percutaneous endoscopic lumbar discectomy with computed-tomography navigation (O-arm), and group C who underwent conventional fluoroscopic guidance (C-arm). SETTING Twenty-one (n = 21) patients were enrolled with data fully documented. There were 9 patients in group O (n = 9) and 12 patients in group C (n = 12). METHODS An intraoperative 3-dimensional image was obtained using the O-arm device (O-arm®, Medtronic, Inc., Louisville, CO, United States) after patient positioning in group O, and enable multiplanar visualization during exploring the entry point, trajectory, orientation, and finally discectomy. In group C, conventional imaging scanner intensifier (C-arm) was used during the procedure. RESULTS The operative time (99.4 ± 40.7 vs 86.9 ± 47.9 minutes, P = .129), blood loss (11.1 ± 15.7 vs 6.7 ± 8.2 mL, P = .602), and hospital stay (2.9 ± 0.3 vs 2.8 ± 0.6 days, P = .552) were similar between the 2 groups. However, group O showed more reduction in the pain and faster functional recovery immediately after the surgery (Visual Analog Score [VAS]: -9 vs -6.7, P =.277; Oswestry Disability Index [ODI]: -53.2% vs -29.1%, P = 0.006) and during the one-year follow-up (VAS: -8.1 vs -7.3, P =.604; ODI: -56.7% vs -40.1%, P = .053) compared with group C. LIMITATIONS The retrospective nature of the study design, the small population size, and the shorter period of follow-up required further study. CONCLUSIONS Computed tomography-navigated percutaneous endoscopic surgery is safe and effective for lumbar disc herniation with high-grade migration, and enhance early functional recovery even compared with conventional fluoroscopic guidance.
Collapse
Affiliation(s)
- Erh-Ti Lin
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Pang-Hsuan Hsiao
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Chia-Yu Lin
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Chien-Chun Chang
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC); Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin County, Taiwan (ROC); Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung, Taiwan (ROC)
| | - Chien-Ying Lai
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Ling-Yi Li
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Michael Jian-Wen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Yen-Jen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC)
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan (ROC); Spine Center, China Medical University Hospital, Taichung, Taiwan (ROC); Department of Sport Medicine, College of Health Care, China Medical University, Taichung, Taiwan (ROC)
| |
Collapse
|
8
|
Chen KJ, Lai CY, Chiu LT, Huang WS, Hsiao PH, Chang CC, Lin CJ, Lo YS, Chen YJ, Chen HT. Adjacent segment disease following Dynesys stabilization for lumbar disorders: A case series of mid- and long-term follow-ups. World J Clin Cases 2021; 9:10850-10860. [PMID: 35047596 PMCID: PMC8678859 DOI: 10.12998/wjcc.v9.i35.10850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/04/2021] [Accepted: 09/16/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Radiologic adjacent segment degeneration (ASDeg) can occur after spinal surgery. Adjacent segment disease (ASDis) is defined as the development of new clinical symptoms corresponding to radiographic changes adjacent to the level of previous spinal surgery. Greater pre-existing ASDeg is generally considered to result in more severe ASDis; nonetheless, whether the ASDeg status before index surgery influences the postoperative risk of revision surgery due to ASDis warrants investigation.
AIM To identify possible risk factors for ASDis and verify the concept that greater preexisting ASDeg leads to more severe ASDis.
METHODS Data from 212 patients who underwent posterior decompression with Dynesys stabilization from January 2006 to June 2016 were retrospectively analyzed. Patients who underwent surgery for ASDis were categorized as group A (n = 13), whereas those who did not were classified as group B (n = 199). Survival analysis and Cox proportional hazards models were used to compare the modified Pfirrmann grade, University of California-Los Angeles grade, body mass index, number of Dynesys-instrumented levels, and age.
RESULTS The mean time of reoperation was 7.22 (1.65–11.84) years in group A, and the mean follow-up period was 6.09 (0.10–12.76) years in group B. No significant difference in reoperation risk was observed: Modified Pfirrmann grade 3 vs 4 (P = 0.53) or 4 vs 5 (P = 0.46) for the upper adjacent disc, University of California-Los Angeles grade 2 vs 3 for the upper adjacent segment (P = 0.66), age of < 60 vs > 60 years (P = 0.9), body mass index < 25 vs > 25 kg/m2 (P = 0.3), and sex (P = 0.8).
CONCLUSION Greater preexisting upper ASDeg was not associated with a higher rate of reoperation for ASDis after Dynesys surgery. Being overweight tended to increase reoperation risk after Dynesys surgery for ASDis.
Collapse
Affiliation(s)
- Kuan-Ju Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung City 404, Taiwan
| | - Chien-Ying Lai
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, Taichung City 404, Taiwan
| | - Lu-Ting Chiu
- Management Office for Health Data, China Medical University Hospital, Taichung City 404, Taiwan
- College of Medicine, China Medical University, Taichung City 404, Taiwan
| | - Wei-Sheng Huang
- School of Chinese Medicine, China Medical University, Taichung City 404, Taiwan
| | - Pang-Hsuan Hsiao
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
| | - Chien-Chun Chang
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Degree Program of Biomedical Science and Engineering, National Chiao Tung University, Hsinchu City 300, Taiwan
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu City 300, Taiwan
| | - Cheng-Jyh Lin
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin County 651, Taiwan
- Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung City 404, Taiwan
| | - Yen-Jen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- School of Medicine, China Medical University, Taichung City 404, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Spine Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan
- Department of Sport Medicine, College of Health Care, China Medical University, Taichung City 404, Taiwan
| |
Collapse
|
9
|
Ho TY, Lin CW, Chang CC, Chen HT, Chen YJ, Lo YS, Hsiao PH, Chen PC, Lin CS, Tsou HK. Percutaneous endoscopic unilateral laminotomy and bilateral decompression under 3D real-time image-guided navigation for spinal stenosis in degenerative lumbar kyphoscoliosis patients: an innovative preliminary study. BMC Musculoskelet Disord 2020; 21:734. [PMID: 33172435 PMCID: PMC7656687 DOI: 10.1186/s12891-020-03745-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/26/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The aim of this study is to introduce a new method of percutaneous endoscopic decompression under 3D real-time image-guided navigation for spinal stenosis in degenerative kyphoscoliosis patients without instability or those who with multiple comorbidities. Decompression alone using endoscope for kyphoscoliosis patient is technical demanding and may result in unnecessary bone destruction leading to further instability. The O-arm/StealthStation system is popular for its ability to provide automated registration with intraoperative, postpositioning computed tomography (CT) which results in superior accuracy in spine surgery. METHODS In this study, we presented four cases. All patients were over seventy years old female with variable degrees of kyphoscoliosis and multiple comorbidities who could not endure major spine fusion surgery. Percutaneous endoscopic unilateral laminotomy and bilateral decompression under 3D real-time image-guided navigation were successfully performed. Patients' demographics, image study parameters, and outcome measurements including pre- and post-operative serial Visual analog scale (VAS), and Oswestry Disability Index (ODI) were well documented. The follow-up time was 1 year. RESULTS Pre- and post-operative MRI showed average dural sac cross sectional area (DSCSA) improved from 81.62 (range 67.34-89.07) to 153.27 (range 127.96-189.73). Preoperative neurological symptoms including radicular leg pain improved postoperatively. The mean ODI (%) were 85 (range 82.5-90) at initial visit, 35.875 (range 25-51) at 1 month post-operatively, 26.875 (range 22.5-35) at 6 months post-operatively and 22.5 (range 17.5-30) at 12 months post-operatively (p < 0.05). The mean VAS score were 9 (range 8-10) at initial visit, 2.25 (range 2-3) at 1 month post-operatively, 1.75 (range 1-2) at 6 months post-operatively and 0.25 (range 0-1) at 12 months post-operatively (p < 0.05). There was no surgery-related complication. CONCLUSIONS To the best of our knowledge, this is the first preliminary study of percutaneous endoscopic laminotomy under O-arm navigation with successful outcomes. The innovative technique may serve as a promising solution in treating spinal stenosis patients with lumbar kyphoscoliosis and multiple comorbidities.
Collapse
Affiliation(s)
- Tsung-Yu Ho
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan
| | - Chung-Wei Lin
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan
| | - Chien-Chun Chang
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan. .,Spine Center, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan. .,Biological Science and Technology, National Chiao Tung University, No. 75, Bo'ai St., East Dist, Hsinchu City, 300, Taiwan. .,Biomedical Science and Engineering, National Chiao Tung University, No. 75, Bo'ai St., East Dist, Hsinchu City, 300, Taiwan.
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan. .,Spine Center, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan. .,Department of Sports Medicine, College of Health Care, China Medical University, No. 91, Xueshi Rd., North Dist, Taichung City, 404, Taiwan.
| | - Yen-Jen Chen
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan.,Spine Center, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan.,Department of Orthopedic Surgery, School of Medicine, China Medical University, No. 91, Xueshi Rd., North Dist, Taichung City, 404, Taiwan
| | - Yuan-Shun Lo
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan.,Spine Center, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan
| | - Pan-Hsuan Hsiao
- Department of Orthopedic Surgery, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan.,Spine Center, China Medical University Hospital, China Medical University, No. 2, Xueshi Rd., North Dist, Taichung City, 404, Taiwan
| | - Po-Chen Chen
- Section of Orthopedic Surgery, Department of Surgery, Ministry of Health and Welfare, Changhua Hospital, No. 80, Sec. 2, Zhongzheng Rd., Puxin Township, Changhua County, 513, Taiwan
| | - Chih-Sheng Lin
- Biological Science and Technology, National Chiao Tung University, No. 75, Bo'ai St., East Dist, Hsinchu City, 300, Taiwan.,Biomedical Science and Engineering, National Chiao Tung University, No. 75, Bo'ai St., East Dist, Hsinchu City, 300, Taiwan
| | - Hsi-Kai Tsou
- Functional Neurosurgery Division, Neurological Institute, Taichung Veterans General Hospital, No. 1650, Sec. 4, Taiwan Blvd., Xitun Dist, Taichung City, 407, Taiwan.,Department of Rehabilitation, Jen-Teh Junior College of Medicine, Nursing and Management, No. 79-9 Sha-Luen Hu Xi-Zhou Li Hou-Loung Town, Miaoli County, 356, Taiwan
| |
Collapse
|
10
|
Lin CY, Chang CC, Tseng C, Chen YJ, Tsai CH, Lo YS, Hsiao PH, Tsou HK, Lin CS, Chen HT. Seizure After Percutaneous Endoscopic Surgery-Incidence, Risk Factors, Prevention, and Management. World Neurosurg 2020; 138:411-417. [PMID: 32251806 DOI: 10.1016/j.wneu.2020.03.121] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Percutaneous endoscopic surgery is a popular surgery to treat lumbar spinal disorders. However, seizure after percutaneous endoscopic surgery is an unpredictable complication. The only prodromal sign for seizure currently known is neck pain. We reviewed the incidence of, and risk factors for, seizure during percutaneous endoscopic surgery and present the cases of 3 patients with seizure and our management. CASE DESCRIPTION From October 2006 to March 2019, 3 of 816 patients (0.34%) with thoracic lumbar disorders who had undergone percutaneous endoscopic surgery experienced a seizure episode. The cases of those 3 patients were carefully reviewed. Studies of the risk factors for seizure after spinal procedures reported before June 13, 2019 were identified through a PubMed search. We found that infusion fluid containing cefazolin, the infusion rate, a prolonged operative time, the occurrence of a dural tear, and sevoflurane anesthesia might be associated with seizure, both described in the reported data and found in our experience. Three patients who experienced a seizure episode had had general anesthesia with sevoflurane, and the surgical approach used was interlaminar for a herniated disc in L5-S1. We noted a "red flag sign," namely an uncontrollable hypertension episode combined with a decreasing pulse rate, in all 3 patients who had experienced a seizure, which was not observed in the other patients. All 3 patients had received antihypertensive medication (labetalol) ≥3 times without response. CONCLUSION Seizure after percutaneous endoscopic surgery is rare, but lethal. Although its cause remains unknown, all risk factors for seizure should be checked and corrected immediately when a red flag sign, uncontrolled hypertension, appears.
Collapse
Affiliation(s)
- Chia-Yu Lin
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China
| | - Chien-Chun Chang
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Ph.D. Degree Program of Biomedical Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China
| | - Chun Tseng
- Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Beigang Township, Taiwan, Republic of China
| | - Yen-Jen Chen
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; School of Medicine, China Medical University, Taichung, Taiwan, Republic of China
| | - Chun-Hao Tsai
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Department of Sport Medicine, College of Health Care, China Medical University, Taichung, Taiwan, Republic of China
| | - Yuan-Shun Lo
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Pang-Hsuan Hsiao
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China
| | - Hsi-Kai Tsou
- Functional Neurosurgery Division, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, Republic of China; Department of Rehabilitation, Jen-Teh Junior College of Medicine, Nursing and Management, Hou-Loung Township, Taiwan, Republic of China
| | - Chih-Sheng Lin
- Ph.D. Degree Program of Biomedical Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China; Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan, Republic of China
| | - Hsien-Te Chen
- Department of Orthopaedic Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China; Department of Sport Medicine, College of Health Care, China Medical University, Taichung, Taiwan, Republic of China.
| |
Collapse
|
11
|
Chen HT, Wang YC, Hsieh CC, Su LT, Wu SC, Lo YS, Chang CC, Tsai CH. Trends and predictors of mortality in unstable pelvic ring fracture: a 10-year experience with a multidisciplinary institutional protocol. World J Emerg Surg 2019; 14:61. [PMID: 31889991 PMCID: PMC6935111 DOI: 10.1186/s13017-019-0282-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/16/2019] [Indexed: 12/13/2022] Open
Abstract
Background Pelvic ring fracture is often combined with other injuries and such patients are considered at high risk of mortality and complications. There is controversy regarding the gold standard protocol for the initial treatment of pelvic fracture. The aim of this study was to assess which risk factors could affect the outcome and to analyze survival using our multidisciplinary institutional protocol for traumatic pelvic ring fracture. Material and methods This retrospective study reviewed patients who sustained an unstable pelvic ring fracture with Injury Severity Score (ISS) ≥ 5. All patients were admitted to the emergency department and registered in the Trauma Registry System of a level I trauma center from January 1, 2008, to December 31, 2017. The annular mortality rate after the application of our institutional protocol was analyzed. Patients with different systems of injury and treatments were compared, and regression analysis was performed to adjust for factors that could affect the rate of mortality and complications. Results During the 10-year study period, there were 825 unstable pelvic ring injuries, with a mean ISS higher than that of other non-pelvic trauma cases. The annual mortality rate declined from 7.8 to 2.4% and the mean length of stay was 18.1 days. A multivariable analysis showed that unstable initial vital signs, such as systolic blood pressure < 90 mmHg (odds ratio [OR] 2.53; confidence interval [CI] 1.11–5.73), Glasgow Coma Scale < 9 (OR 3.87; CI 1.57–9.58), 24 > ISS > 15 (OR 4.84; CI 0.85–27.65), pulse rate < 50 (OR 11.54; CI 1.21–109.6), and diabetes mellitus (OR 3.18; CI 1.10–9.21) were associated with higher mortality. No other specific system in the high Abbreviated Injury Scale increased the rates of mortality or complications. Conclusion Poor initial vital signs and Glasgow Coma Scale score, higher ISS score, and comorbidity of diabetes mellitus affect the mortality rate of patients with unstable pelvic ring fractures. No single system of injury was found to increase mortality in these patients. The mortality rate was reduced through institutional efforts toward the application of guidelines for the initial management of pelvic fracture.
Collapse
Affiliation(s)
- Hsien-Te Chen
- 1Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,2Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,3Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Yu-Chun Wang
- 4Department of Surgery, China Medical University Hospital, Taichung, Taiwan.,5Department of Surgery, School of Medicine, China Medical University, Taichung, Taiwan.,6Division of Emergency Disease Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chen-Chou Hsieh
- 4Department of Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Li-Ting Su
- 4Department of Surgery, China Medical University Hospital, Taichung, Taiwan.,6Division of Emergency Disease Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Chi Wu
- 4Department of Surgery, China Medical University Hospital, Taichung, Taiwan.,5Department of Surgery, School of Medicine, China Medical University, Taichung, Taiwan.,6Division of Emergency Disease Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Yuan-Shun Lo
- 1Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,2Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,3Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Chien-Chun Chang
- 1Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,2Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,3Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Chun-Hao Tsai
- 1Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,2Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,3Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan.,7Department of Orthopedic Surgery, School of Medicine, China Medical University, #91 Hsueh-Shih Road, Taichung, 404 Taiwan
| |
Collapse
|
12
|
Olson LG, Lo YS, Beebe TP, Harris JM. Characterization of silane-modified immobilized gold colloids as a substrate for surface-enhanced Raman spectroscopy. Anal Chem 2001; 73:4268-76. [PMID: 11569819 DOI: 10.1021/ac000873b] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Immobilized gold colloid particles coated with a C-18 alkylsilane layer have been characterized as a substrate for surface-enhanced Raman scattering (SERS) studies of adsorption onto hydrophobic surfaces. Atomic force microscopy images, optical extinction spectra, and SERS measurements are reported as a function of accumulation of gold colloid on glass. As the metal particles become increasingly aggregated on the surface, the SERS enhancement increases until the plasmon resonance shifts to wavelengths longer than the excitation laser. The gold colloid substrates are stable and exhibit reproducible SERS enhancement. When octadecyltrimethoxysilane is self-assembled over the gold, the metal surface is protected from exposure to solution-phase species, as evidenced by the inhibition of chemisorption of a disulfide reagent to the overcoated gold surface. The results show that interactions with gold can be blocked by a silane layer so as not to significantly influence physisorption of molecules at the C-18/solution interface. The SERS enhancement from these C-18-overcoated gold substrates is reproducible for different films prepared from the same colloidal suspension; the substrates are also stable with time and upon exposure to laser irradiation.
Collapse
Affiliation(s)
- L G Olson
- Department of Chemistry, University of Utah, Salt Lake City 84112-0850, USA
| | | | | | | |
Collapse
|
13
|
Lin YT, Lo GH, Lai KH, Tsai CC, Pan HB, Tseng HH, Lo YS. Solitary fibrous tumor of the liver. Zhonghua Yi Xue Za Zhi (Taipei) 2001; 64:305-9. [PMID: 11499341] [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: 02/21/2023]
Abstract
Solitary fibrous tumor of the liver is a rare neoplasm. So far, 21 cases have been described in the English literature. We reported an additional case. Our patient, a 75-year-old man, suffered from abdominal fullness and body weight loss of 6 kg over 6 months, and chills and fever for 2 months. Hypoglycemia was noted at admission. Both abdominal sonography and CT showed a huge mass occupying the right lobe of liver. Liver biopsy showed fibrous tumor. Right lobectomy was performed and the tumor was resected. Pathological examination showed spindle-shaped and fibroblast-like cells within the collagenous stroma. On immunohistochemical stains, these spindle tumor cells showed CD34 positive reactivity. The post-operative course was uneventful and there was no more hypoglycemia. The patient recovered smoothly, regained his body weight, and was alive without evidence of disease recurrence at the last follow-up visit in November, 2000.
Collapse
Affiliation(s)
- Y T Lin
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, 386, Ta-Chung 1st Road, Kaohsiung 813, Taiwan
| | | | | | | | | | | | | |
Collapse
|
14
|
Rosenblum DA, Volpe MV, Dammann CE, Lo YS, Thompson JF, Nielsen HC. Expression and activity of epidermal growth factor receptor in late fetal rat lung is cell- and sex-specific. Exp Cell Res 1998; 239:69-81. [PMID: 9511726 DOI: 10.1006/excr.1997.3888] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Epidermal growth factor (EGF) augments late fetal lung maturation by advancing the ontogeny of fetal lung development and by stimulating surfactant synthesis. Previous studies have indicated that fibroblastalveolar epithelial cell communications mediate surfactant synthesis in the fetal lung and EGF acts through such a mechanism. We investigated the hypothesis that is differential activity and expression of the epidermal growth factor receptor (EGF-R) in fetal lung fibroblasts during the canalicular stage of lung development mediates EGF effects. To test this hypothesis, we examined fetal rat lung fibroblasts (FLFs) and type II cells of late gestation (canalicular and saccular stages; 17-22 days) by EGF-R binding techniques, SDS-PAGE, and Western blot analysis. Specific EGF binding increased 181% in day 18 female FLFs, with male FLFs exhibiting a similar increase on day 19. In contrast, specific EGF binding was low in type II cells, did not increase during late gestation, and there were no sex-specific differences. SDS-PAGE and Western blot analysis revealed a predominant 170-kDa EGF-R band in fibroblasts that increased with gestation (peak = 19 days), and was stronger in females. Immunoprecipitation of EGF-treated cells demonstrated the tyrosine kinase activity of the identified receptor. In contrast, type II cells showed minimal signal that did not increase until day 21 of gestation. We also examined whole fetal lung sections by immunohistochemistry to determine cell-specific expression of the EGF-R in vivo. Immunohistochemistry revealed specific EGF-R staining in columnar and cuboidal epithelia of small conducting airways and in mesenchyme of epithelial-mesenchymal borders (including subepithelial mesenchyme). In contrast, alveolar epithelia showed minimal staining, while subalveolar mesenchyme EGF-R staining peaked at day 19 of gestation. We conclude that cell-specific and sex-specific differences in EGF-R binding and EGF-R immunolocalization appears in the fetal lung at a developmental stage that is critical for alveolar epithelial cell differentiation. The results suggest a role for EGF-R activation in late fetal alveolar epithelial cell maturation, which is mediated through mesenchymal-epithelial cell communication.
Collapse
Affiliation(s)
- D A Rosenblum
- Division of Newborn Medicine, New England Medical Center, Boston, Massachusetts 02111, USA
| | | | | | | | | | | |
Collapse
|
15
|
Abstract
Mitochondria of rapidly developing mungbean seedlings were fractionated into four populations: two density classes, each from a 1500S and a 150S pellet. Each of the four populations exhibited cytochrome c oxidase (COX) activity and contained mitochondrial DNA and cardiolipin; plastid and glyoxysome content were found to be relatively low. Five mitochondrial membrane proteins, COXII/III, ATPase alpha/beta and porin, and a matrix enzyme, manganese superoxide dismutase (MnSOD), were detected by immunoblots in all four populations. Another matrix enzyme, pyruvate dehydrogenase was detected only in the two respiratory-competent 1500S populations. The two 150S populations contained a previously unidentified organelle that lacked demonstrable respiratory capability. This organelle, which we have tentatively referred to as "slow-sedimenting (ss-) mitochondrion", was small in size (below light-optics resolution, 70-300nm, majority < or =200nm) and possessed a peculiar looking boundary membrane, ribosomes, and an occasional prominent electron-dense spot. Characteristically, ss-mitochondria were almost always in contact with a filament-aligned membrane-like structure of varying length. Cristae structure, while undetected in small ss-mitochondria, appeared in larger individuals. Typical mitochondria were found in the denser 1500S population, while the lighter 1500S population consisted of 300-800 nm mitochondria exhibiting a varying degree of size-dependent inner membrane folding. Using electron microscopy (EM) immunolocalization and serial sectioning, we have identified in situ organelles resembling in size and in fine structure the ss-mitochondria, which also exhibit a size-dependent folding of the inner membrane. These results suggest that small ss-mitochondria may undergo a progressive development in situ. Taken together, our findings demonstrate the existence of a pattern of structure-function-coordinated gross heterogeneity among mitochondria. This pattern of mitochondrial heterogeneity, characterized both in isolated mitochondria and in situ, implies that small ss-mitochondria may represent a type of "nascent mitochondria" derived from a yet unidentified mitochondria-propagation mode operating during rapid seedling growth. Mitochondrial division by binary fission, characterized by the appearance of dumbbell-shaped intermediates, was also detected.
Collapse
Affiliation(s)
- H Dai
- Institute of Botany, Academia Sinica, Taipei, Taiwan, ROC
| | | | | | | | | |
Collapse
|
16
|
Dai H, Lo YS, Wang TS, Chiang KS. Variation in protein and RNA synthesis activity in isolated mitochondria of the developing rice (Oryza sativa L.) panicle. Theor Appl Genet 1995; 90:1112-1118. [PMID: 24173071 DOI: 10.1007/bf00222930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/1994] [Accepted: 08/18/1994] [Indexed: 06/02/2023]
Abstract
We have studied variation in mitochondrial protein and RNA synthesis during the development of a specialized rice (Oryza sativa L.) reproductive organ in a bacteria-free environment. Mitochondria were prepared from the maturing panicle during microsporogenesis when meiosis occurred and from etiolated seedlings at two growth stages. We found (1) that there was no discernible qualitative difference among the polypeptides synthesized by these three mitochondrial samples; (2) that the quantity of proteins synthesized by panicle mitochondria was approximately 3 times that of the seedling mitochondria, while the two seedling samples exhibited only a minor quantitative difference; (3) that panicle and seedling mitochondria samples synthesized qualitatively the same RNA but at distinctly different rates and that more RNA products were synthesized by panicle than by seedling mitochondria. These results, taken together, suggest that either the regulation of mitochondrial transcription and translation or the copy number of mitochondrial DNA per mitochondrion change discretely in the developing panicle and consequently that the level of mitochondrial gene expression increases considerably during the development of the reproductive structure in rice.
Collapse
Affiliation(s)
- H Dai
- Institute of Botany, Academia Sinica, Taipei, Taiwan 11529 ROC
| | | | | | | |
Collapse
|
17
|
Lo YS, Lu CC, Chiou SS, Chen BH, Chang TT, Chang JG. Molecular characterization of glucose-6-phosphate dehydrogenase deficiency in Chinese infants with or without severe neonatal hyperbilirubinaemia. Br J Haematol 1994; 86:858-62. [PMID: 7918083 DOI: 10.1111/j.1365-2141.1994.tb04842.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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: 01/27/2023]
Abstract
To characterize mutations in the glucose-6-phosphate dehydrogenase (G6PD) gene in Chinese infants, we studied 213 G6PD-deficient infants without blood exchange transfusion (BET) therapy, and 34 patients who required BET therapy for their severe hyperbilirubinaemia after birth. Nine different point mutations were characterized in all infants. Of these mutations, the G to T substitution at cDNA nucleotide (nt) 1376, which accounts for the mutations in 131 (53.0%) neonates, followed by G to A substitution at nt 1388 in 18 (10.5%) infants, A to G substitution at nt 493 in 17 (6.9%) infants, A to G substitution at nt 95 in 10 (4.1%) infants, C to T substitution at nt 1024 in six (2.4%) infants, and G to T substitution at nt 392 in three (1.2%) infants, G to A substitution at nt 487 in two (0.8%) infants, C to T substitution at nt 1360 in two (0.8%) infants and C to T substitution at nt 592 in two (0.8%) infants. Mutations in 48 (19.5%) G6PD-deficient infants were not characterized. Most (64.7%) mutations in the G6PD-deficient infants who required BET therapy after birth result from a G to T substitution at nt 1376. The enzyme activity of G6PD deficient infants who required BET therapy is significantly lower than for those who did not, even in a group with the same variant (as in 1376 mutation). Severe neonatal jaundice requiring BET therapy can take place with the majority of variants encountered in this area.
Collapse
Affiliation(s)
- Y S Lo
- Department of Paediatrics, Kaohsiung Medical College Hospital, Taipei, Taiwan, R.O.C
| | | | | | | | | | | |
Collapse
|
18
|
Abstract
Fourteen patients (5%) with an intermediate septal accessory pathway were identified among 283 consecutive patients with the Wolff-Parkinson-White syndrome who had electrophysiologic study and radiofrequency ablation therapy. Nine were women and 5 were men (mean age 33 +/- 13 years). The resting electrocardiogram showed ventricular preexcitation in 8 patients and normal PR interval in 6. Anterograde and retrograde mapping studies revealed that the accessory pathway was para-Hisian in 11 patients and paranodal in 3. The accessory pathway was successfully ablated in 10 patients (9 para-Hisian and 1 paranodal) and damaged in 1 (para-Hisian). Treatment of 3 patients was complicated by transient atrioventricular (AV) block, of 1 by intermittent second-degree AV block, and of another by permanent complete AV block requiring implantation of a permanent pacemaker. Six patients underwent a follow-up electrophysiologic study 84 +/- 55 days after ablation; none had induction of tachycardia even after isoproterenol infusion. It is concluded that radiofrequency ablation therapy for intermediate septal accessory pathway is feasible. However, the success rate is only modest (71%), whereas complications with heart block (36%) or complete right bundle branch block (29%) are high. Thus, the procedure should be reserved for patients with life-threatening or troublesome symptomatic tachyarrhythmias.
Collapse
Affiliation(s)
- S J Yeh
- Department of Medicine, Chang Gung Memorial Hospital, Chang Gung Medical College, Taipei, Taiwan, Republic of China
| | | | | | | | | | | | | |
Collapse
|
19
|
Hong MY, Kuo WR, Wu JR, Lin HJ, Lo YS, Juan KH. [Congenital nasopharyngeal teratoma: report of a case and review of the literature]. Gaoxiong Yi Xue Ke Xue Za Zhi 1993; 9:476-80. [PMID: 8230368] [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: 01/29/2023]
Abstract
Teratomas are the most common congenital tumors, but teratomas of the nasopharynx are rare and seen almost exclusively in infants, usually in neonates. An unusual case of a neonate with respiratory distress is presented and a nasopharyngeal mass protruding into the oral cavity. After successful removal of the mass, pathological examination revealed a mature teratoma. The management and differential diagnosis are discussed, accompanied by a review of the literature.
Collapse
Affiliation(s)
- M Y Hong
- Department of Otolaryngology, Kaohsiung Medical College, Taiwan, Republic of China
| | | | | | | | | | | |
Collapse
|
20
|
Dai H, Lo YS, Charn CG, Ruddat M, Chiang KS. Characterization of protein synthesis by isolated rice mitochondria. Theor Appl Genet 1993; 86:312-316. [PMID: 24193475 DOI: 10.1007/bf00222094] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/1992] [Accepted: 11/03/1992] [Indexed: 06/02/2023]
Abstract
Bacteria-free mitochondria were isolated from aseptically grown, etiolated and green seedlings of both cytoplasmic male-sterile (WA-type) and male-fertile rice (Oryza sativa L.). Protein synthesis in these isolated mitochondria was characterized by gel electrophoresis/fluorography and by the incorporation of [(35)S]-methionine into protein. In the presence of cycloheximide, a set of some 25 discrete polypeptides and an electrophoretically unresolved population were synthesized. This pattern of protein synthesis in organello was essentially the same in mitochondria isolated from both male-fertile and malesterile cytoplasms. Our data does not preclude the possibility, however, that the WA-type CMS possesses a tissue-specific and/or a low abundance mitochondrial protein(s), whose synthesis eluded detection under our experimental conditions. The synthesis of the mitochondria-encoded polypeptides by isolated rice mitochondria was inhibited by chloramphenicol and incompletely inhibited by erythromycin. A minor chloramphenicol-insensitive, cycloheximide-sensitive translation activity was found consistently to copurify with the mitochondria. This activity generated a reproducible electrophoretic profile of a poorly resolved, weakly labelled population of polypeptides and of a few conspicuous polypeptides, including a 42 kDa species.
Collapse
Affiliation(s)
- H Dai
- Institute of Botany, Academia Sinica, Taipei, Taiwan 11529, Peoples Republic of China
| | | | | | | | | |
Collapse
|
21
|
Lo YS, Nolan JC, Maren TH, Welstead WJ, Gripshover DF, Shamblee DA. Synthesis and physicochemical properties of sulfamate derivatives as topical antiglaucoma agents. J Med Chem 1992; 35:4790-4. [PMID: 1479580 DOI: 10.1021/jm00104a003] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Several imidazolylphenyl sulfamate and (imidazolylphenoxy)alkyl sulfamate derivatives were synthesized and evaluated as topically active carbonic anhydrase inhibitors. Water solubility, pKa, carbonic anhydrase inhibition, and partition coefficient for the compounds were measured. Sulfamic acid 2-[4-(1H-imidazol-1-yl)phenoxy]ethyl ester monohydrochloride (16) has the best combination of properties and showed excellent topical activity in lowering the intraocular pressure in New Zealand white rabbits.
Collapse
Affiliation(s)
- Y S Lo
- A.H. Robins Company, Richmond, Virginia 23261-6609
| | | | | | | | | | | |
Collapse
|
22
|
Abstract
Most physiological profiles of élite soccer players originate from Western Europe and North America. Unfortunately, there is a scarcity of descriptive data on the physical characteristics of Asian soccer players. Therefore, the purpose of this study was to evaluate the physiological profiles of élite soccer players in Hong Kong. It was conducted in conjunction with the selection of the Hong Kong team before the 1990 Beijing Asian Games. In all, 24 professional soccer players were selected from a pool of 180 players as subjects for the study. The following means(s.d.) were observed: height 173.4(4.6) cm; weight 67.7(5.0) kg; body fat 7.3(3.0)%; forced vital capacity (FVC) 5.1(0.6) l; maximum oxygen uptake (VO2max) 59.1(4.9) ml kg-1 min-1; anaerobic threshold (AT 80.0(7.2)% of VO2max; alactic power index 13.5(2.4) W kg-1; lactic work index 298(27) J kg-1; peak isokinetic dominant knee extensor and flexor strengths 2.72(0.36) Nm kg-1 and 1.65(0.20) Nm kg-1. On average the physique of Hong Kong soccer players appeared to be smaller and lighter than those found in Europe, which may be one of the key factors that contribute to the lack of success of Hong Kong soccer teams in international competition.
Collapse
Affiliation(s)
- M K Chin
- Sports Science Department, Hong Kong Sports Institute, Shatin, NT
| | | | | | | |
Collapse
|
23
|
Lo YS, Lu CC, Chen LY, Huang LY, Jong YJ. Quantitative measurement of muscle and subcutaneous fat thickness in newborn by real-time ultrasonography: a useful method for site and depth evaluation in vaccination. Gaoxiong Yi Xue Ke Xue Za Zhi 1992; 8:75-81. [PMID: 1404527] [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: 12/26/2022]
Abstract
In order to quantify muscle thickness and choose the appropriate site for intramuscular injection of vaccines in neonates, we used ultrasonography to measure muscle and subcutaneous fat thickness of anterolateral mid-thigh, upper outer quadrant of buttock and middle area of deltoid in fifty full term (group 1) and thirty low birth weight (group 2) infants. A Hitachi EUB40 real-time scanner and a 5 MHz transducer was used in the study. We delineated the normal distribution of muscle and subcutaneous fat thickness in mid-thigh, buttock and deltoid areas of full term and low birth weight infants. There was no significant difference between male and female infants in the two groups. Muscle and subcutaneous fat thickness in the thigh area was 11.8 +/- 1.9 mm and 3.8 +/- 0.4 mm, respectively, in group 1; 8.6 +/- 1.7 mm and 2.7 +/- 0.5 mm in group 2. Figures in the buttock area were 10. 1 +/- 1.5 mm and 3.7 +/- 0.5 mm in group 1, 6.9 +/- 1.2 mm and 2.7 +/- 0.7 mm in group 2; and in the deltoid area were 5.2 +/- 0.7 mm and 3.4 +/- 1.5 mm in group 1 and 3.8 +/- 0.8 mm and 2.3 +/- 0.6 mm in group 2. There was significant logarithmic correlation between muscle thickness and body weight (r = 0.6, 0.8, 0.6) and muscle thickness and body length (r = 0.4, 0.6, 0.6) in thigh, buttock and deltoid areas of the low birth weight infants. In contrast, there was significant logarithmic correlation only between buttock muscle and body weight (r = 0.5) in the full term infants.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- Y S Lo
- Department of Pediatrics, Kaohsiung Medical College Hospital, Taiwan, Republic of China
| | | | | | | | | |
Collapse
|
24
|
Tomczuk BE, Taylor CR, Moses LM, Sutherland DB, Lo YS, Johnson DN, Kinnier WB, Kilpatrick BF. 2-Phenyl-3H-imidazo[4,5-b]pyridine-3-acetamides as non-benzodiazepine anticonvulsants and anxiolytics. J Med Chem 1991; 34:2993-3006. [PMID: 1681105 DOI: 10.1021/jm00114a007] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [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: 12/28/2022]
Abstract
A series of 2-phenyl-3H-imidazo[4,5-b]pyridine-3-acetamides were designed and synthesized as non-benzodiazepine anxiolytics based on a molecular disconnection of a typical 1,4-benzodiazepine (BZD). A number of these compounds showed submicromolar potency in a [3H]benzodiazepine binding assay in vitro and good potency in protecting rodents against pentylenetetrazole-induced seizures. Compound 84 appears to be a selective anticonvulsant (pentylenetetrazole) agent when tested against a profile of chemically and electrically induced seizures in mice. In addition, compound 148 appears to be a selective anxiolytic/hypnotic agent on the basis of biochemical and pharmacological characterization. It appears to be a full BZD agonist as assessed by GABA shift ratio and to be effective in punishment and nonpunishment animal models of anxiety. In addition, it shows a lower side-effect profile than diazepam as assessed by rotorod neurotoxicity and potentiation of ethanol-induced sleep time in mice. The chemistry and structure-activity relationships of this series is discussed.
Collapse
Affiliation(s)
- B E Tomczuk
- Department of Chemical Research, A. H. Robins Company, Richmond, Virginia 23261-6609
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Dai H, Lo YS, Wu CY, Tsou CL, Hsu GS, Chern CG, Ruddat M, Chiang KS. Protein Synthesis in Isolated Mitochondria of Rice (Oryza sativa L.) Seedlings. Plant Physiol 1991; 96:319-23. [PMID: 16668173 PMCID: PMC1080754 DOI: 10.1104/pp.96.1.319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
For studies of in organello mitochondrial protein synthesis in rice, Oryza sativa L., conventional surface-sterilization procedures were demonstrated to be ineffective. Because of the over-whelmingly efficient [(35)S]methionine utilization by contaminating bacteria, even "essentially bacteria-free" rice mitochondria were shown to be unsuitable for the study of in organello protein synthesis. We developed a procedure to obtain a bacteria-free preparation of rice mitochondria. Such mitochondria favored a membrane-dependent ATP-generating system over an external ATP-generating system as the energy supplement for in organello protein synthesis. Two distinct classes of [(35)S]methionine-labeled, cycloheximide-insensitive products were detected: an electrophoretically unresolved population and a set of some 22 to 27 discrete polypeptide species, each with a characteristic electrophoretic mobility and relative abundance.
Collapse
Affiliation(s)
- H Dai
- Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
Most echocardiographic data on the athletic heart syndrome originate from the United States and Western Europe. There are no published data on echocardiographically documented left ventricular hypertrophy in Asian athletes. We investigated the echocardiographic changes which take place with endurance training by studying eight Hong Kong national cyclists. This study confirms that left ventricular hypertrophy and increased left ventricular end-diastolic dimensions are common findings in Chinese endurance athletes as in their Caucasian counterparts. Calculated left ventricular muscle mass exceeded the 95th percentile in seven of eight subjects.
Collapse
|
27
|
Lo YS, Lu CC, Chen LY, Tsai LT. [Clinical studies of neonatal hyperbilirubinemia treated with blood exchange transfusion]. Gaoxiong Yi Xue Ke Xue Za Zhi 1990; 6:556-64. [PMID: 2243373] [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: 12/30/2022]
Abstract
From April 1984 to November 1989, 194 cases of neonatal hyperbilirubinemia treated with blood exchange transfusions (BET) were studied. The patients included 127 male and 67 female neonates, with an age ranged from 13 hours to 16 days. The most common cause was idiopathic (52.6%), followed by G-6-PD deficiency (23.7%), and sepsis (12.9%). Most of the neonates received BET at the 4th day of birth (23.2%), but there were still 30 cases (15.5%) that received BET after 1 week of age. There were 17 cases (8.8%) with maximum serum bilirubin lower than 20 mg/dl before receiving BET, five of them were LBW infants; 11 cases (5.7%) were greater than 40 mg/dl. The mean of maximum serum bilirubin was 26.9 +/- 7.96 mg/dl. Most of the cases received BET once (145 cases) or twice (33 cases). There were two cases that received up to six BET's. One was G-6-PD deficiency and one idiopathic in etiology. No significant difference of BET frequency between sex or body weight (p greater than 0.05) was found. Newborns with higher serum bilirubin due to G-6-PD deficiency, received more BET (p less than 0.05). No significant differences of the pH value (7.33 +/- 0.08 vs 7.35 +/- 0.10) and bicarbonate values (21.20 +/- 3.99 vs 22.00 +/- 3.83 mM/L) occurred before and after blood exchange transfusion (p greater than 0.1). The serum calcium decreased significantly after BET (3.88 +/- 0.91 vs 3.15 +/- 6.97 mEq/L, p less than 0.05). There were 11 deaths in this series, the mortality rate was 5.7%. Three cases (1.5%) were dead within 6 hours after BET.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- Y S Lo
- Department of Pediatrics, Kaohsiung Medical College, Taiwan, Republic of China
| | | | | | | |
Collapse
|
28
|
Walsh DA, Lo YS, Shamblee DA, Welstead WJ, Nolan JC, Graff G. Methylsulfamic acid esters. A new chemical class of oral antiarthritic agents. J Med Chem 1990; 33:2068-70. [PMID: 2115585 DOI: 10.1021/jm00170a003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- D A Walsh
- Department of Chemical Research, A.H. Robins Company, Richmond, Virginia 23261-6609
| | | | | | | | | | | |
Collapse
|
29
|
|
30
|
Lo YS. Recent advances in the diagnosis and management of heart disease. Xianggang Hu Li Za Zhi 1989:33-6. [PMID: 2534112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
31
|
Lo YS, Billingham M, Rowan RA, Lee HC, Liem LB, Swerdlow CD. Histopathologic and electrophysiologic correlations in idiopathic dilated cardiomyopathy and sustained ventricular tachyarrhythmia. Am J Cardiol 1989; 64:1063-6. [PMID: 2816745 DOI: 10.1016/0002-9149(89)90815-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Y S Lo
- Division of Cardiology, Stanford University, California
| | | | | | | | | | | |
Collapse
|
32
|
Cale AD, Gero TW, Walker KR, Lo YS, Welstead WJ, Jaques LW, Johnson AF, Leonard CA, Nolan JC, Johnson DN. Benzo- and pyrido-1,4-oxazepin-5-ones and -thiones: synthesis and structure-activity relationships of a new series of H1 antihistamines. J Med Chem 1989; 32:2178-99. [PMID: 2570152 DOI: 10.1021/jm00129a026] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.4] [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
A series of novel benzo- and pyrido-1,4-oxazepinones and -thiones which represents a new structural class of compounds possessing H1 antihistaminic activity was synthesized, and the SARs were evaluated. The antihistaminic activity was determined by blockade of histamine-induced lethality in guinea pigs. The sedative potential was determined by comparison of the EEG profiles of the compounds with those of known sedating and nonsedating antihistamines. Several of the compounds were shown to possess potent H1 antihistaminic activity and to be free of the cortical slowing with synchronized waves and spindling activity found in the EEG of sedative antihistamines. One compound, 2-[2-(dimethylamino)ethyl]-3,4-dihydro-4-methylpyrido[3,2-f]-1,4- oxazepine-5(2H)-thione (rocastine) is currently undergoing clinical evaluation as a nonsedating H1 antihistamine.
Collapse
Affiliation(s)
- A D Cale
- Research Laboratory, A. H. Robins Company, Inc., Richmond, Virginia 23261-6609
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Lo YS, Jong YJ, Chiang CH, Tsai JL. [Menkes' kinky hair disease: report of one case]. Zhonghua Min Guo Xiao Er Ke Yi Xue Hui Za Zhi 1989; 30:196-201. [PMID: 2637598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A male infant, 2-month-old, was delivered normally at term. He weighed 3.0 Kg and was stated to be quite well until convulsion was presented at the age of 1 month. The convulsion was complex partial seizure in character. Physical examinations showed body weight 2.7 Kg (less than 3 percentile), body temperature 35.7 degrees C, opisthotonic in posture, staring of eyes and unawareness of the outside environment. His hair appeared sparse, coarse and light yellowish color. Laboratory examinations showed normal hemogram and cerebrospinal fluid data. Low serum copper (10 mg/dl), ceruloplasmin (13.5 mg/dl) and hair copper (9.73 ppm) were found. The EEG revealed paroxysmal sharp waves with phase reverses at right temporal and occipital area. Fundus examination showed bilateral optic atrophy. Microscopic examination of the hair showed pili torti (twisting) of the hair. The baby was persisted in hypothermia, poor activity and poor weight gain. The convulsion was poorly controlled and progressed in opisthotonus. The baby died of unknown cause at 3 months of age.
Collapse
|
34
|
Lo YS, Abi-Mansour P, Kaplan KJ, Kramer BL, Hill IR, Meyers S, Lesch M. Angiographic coronary morphology in postinfarction angina. Cathet Cardiovasc Diagn 1989; 16:155-63. [PMID: 2920388 DOI: 10.1002/ccd.1810160304] [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] [Indexed: 01/03/2023]
Abstract
To investigate the pathophysiologic relevance of angiographically irregular coronary stenoses in postinfarction angina (PIA), we analyzed the clinical course and coronary angiograms of 73 patients studied within 30 days of infarction. Coronary lesions were classified as smooth or irregular. Thirty-six patients had PIA (Group 1) and 37 had an uncomplicated course (Group 2). Irregular lesion(s) in patent infarct-related arteries were found in 77% of Group 1 vs. 24% of Group 2 patients (P less than 0.005). Irregular lesion(s) in any coronary artery were found in 58% of Group 1 versus 19% of Group 2 patients (P less than 0.002). Other univariate predictors of PIA included older age, hypertension, angina before myocardial infarct, lower peak creatine kinase, three-vessel disease, and higher modified Gensini score. Multivariate analysis ranked lesion irregularity as the strongest predictor of PIA. Our data suggests that ruptured atherosclerotic plaques may be important in the pathogenesis of PIA. It is possible that lesion irregularity is associated with an active process and/or a residual thrombus, which may be responsible for postinfarction angina.
Collapse
Affiliation(s)
- Y S Lo
- Department of Medicine, Northwestern University Medical School, Chicago, Illinois
| | | | | | | | | | | | | |
Collapse
|
35
|
Abstract
Angiographically irregular coronary stenoses usually represent plaque rupture with or without superimposed thrombi. Long-segment coronary stenoses with diffuse irregularities (type IIB morphology) have been shown to be more prevalent than focal irregular lesions (type IIA morphology) in survivors of cardiac arrest without acute myocardial infarction. To further understand the pathogenetic importance of type IIB morphology, the clinical and angiographic characteristics in 59 such patients were analyzed. Type IIB lesions accounted for 63% of all type II lesions. Type IIB patients were older than type IIA patients (p less than 0.05). There was a tendency for type IIB morphology to be associated with more extensive disease than other types of lesion morphology (p less than 0.10). Type IIB morphology probably reflects more advanced atherosclerosis. Platelet microemboli may precipitate spasm and/or acute ischemic ventricular tachyarrhythmias. It is possible that long-segment coronary ulcerations are associated with a higher risk for local coronary thromboembolism, and hence with sudden death, than focal lesions.
Collapse
Affiliation(s)
- Y S Lo
- Division of Cardiology, Stanford University Medical Center, Calif
| | | | | | | | | | | |
Collapse
|
36
|
Lo YS, Lu CC, Chen LY. [Neonatal chlamydial conjunctivitis--a case report]. Gaoxiong Yi Xue Ke Xue Za Zhi 1988; 4:582-5. [PMID: 3068372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
37
|
Lo YS, Wu JR, Huang TY, Wang JZ. [Absence of right pulmonary artery with ventricular septal defect: report of a case]. Zhonghua Min Guo Xiao Er Ke Yi Xue Hui Za Zhi 1988; 29:352-6. [PMID: 3272535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
38
|
Lo YS, Huang BL, Tsai LY, Lu CC, Chen TS. [Clinical observations of infants and children with rotavirus gastroenteritis in southern Taiwan]. Gaoxiong Yi Xue Ke Xue Za Zhi 1988; 4:358-63. [PMID: 3165469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
39
|
Abstract
Autopsy studies in victims of sudden coronary death revealed intramyocardial platelet aggregates with microscopic myonecrosis downstream from ruptured atherosclerotic plaques. Ruptured plaques usually manifest angiographically as irregularly bordered (type II) lesions. To investigate the possible pathogenic role of ruptured plaques in arrhythmic death, we analyzed clinical, angiographic, and electrophysiologic data from 49 survivors of cardiac arrest without acute myocardial infarction. All patients had greater than or equal to 50% stenoses of greater than or equal to one coronary artery; 16 had type II morphology, and 33 did not. Type II morphology was more prevalent in patients without inducible sustained monomorphic ventricular tachycardia (11 of 22 or 50%) than in those with it (five of 27 or 19%), p less than 0.05, and patients without akinetic or dyskinetic segments (eight of 14 or 57%) than in those with them (eight of 34 or 24%), p less than 0.06. Thus type II morphology is more prevalent in patients without a demonstrable anatomic and/or electrophysiologic substrate for reentrant ventricular tachycardia, indirectly implicating ruptured plaques in the pathogenesis of cardiac arrest in this subset of patients.
Collapse
Affiliation(s)
- Y S Lo
- Division of Cardiology, Stanford Medical Center, Calif
| | | | | | | | | | | |
Collapse
|
40
|
Abstract
This review discusses the value and limitations of EPS in the management of cardiac arrest survivors. Uncertainties associated with EPS include a lack of consensus with respect to stimulation protocol, end points for VT suppression during drug testing, significance of induced polymorphic VT or VF, and timing of EPS after myocardial infarction. Despite methodologic shortcomings in most clinical studies, a useful body of knowledge has emerged. In cardiac arrest survivors, incidence of inducible sustained VT ranged from 35% to 75%. Where induced VT (sustained or nonsustained) was successfully suppressed, recurrent arrhythmic events occurred in 0% to 33% of patients over a 1- to 5-year follow-up period. Failed regimens correlated with a high risk of arrhythmic recurrence. EPS also helps to select patients for the implantable defibrillator or electrocardiac surgery. In conclusion, EPS appears empirically useful in the management of cardiac arrest survivors with coronary artery disease; its value in other disease entities is uncertain.
Collapse
|
41
|
Abstract
In conclusion, the PIA patient is at high risk, with higher early as well as late mortality. The pathophysiology of PIA is complex and may vary from patient to patient. The concepts of ischemia at a distance and ischemia in the infarct zone have led to a better understanding of early PIA. Coronary spasm may play an important role in most PIA patients as in the general population of patients with angina pectoris. Medical therapy is efficacious in many, although it may on rare occasion aggravate myocardial ischemia. Urgent coronary arteriography is generally safe and should be performed as soon as possible for medically refractory PIA. CABG appears to be safe in experienced hands, but its timing must be individualized. The IABP should be reserved for more unstable patients for fear of vascular complications. Randomized controlled trials such as the BARI Trial will further compare PTCA with CABG.
Collapse
|
42
|
Abstract
Nine studies specifically dealing with the comparison of intravenous streptokinase (IVSK) and intracoronary streptokinase (ICSK) in the treatment of acute myocardial infarction (MI) were analyzed to determine if IVSK is as efficacious as ICSK in achieving thrombolysis. Pooled data from the studies yielded success rates of 73% for IVSK and 72% for ICSK. Considering that the studies which did not perform preintervention angiogram may have overestimated the thrombolytic success rate in IVSK patients, there is a possibility that ICSK may be slightly more effective in achieving acute reperfusion. Bleeding complications were similar, and a systemic lytic state was observed in both treatment groups. No definitive conclusions can be drawn regarding the differences between groups in improvements of left ventricular function and mortality rates. ICSK has the advantage of direct documentation of reperfusion and spares the patient the risk of anticoagulation should the attempt fail. On the other hand, IVSK is cheaper, easier to administer, and can logistically be given earlier (even in the emergency room or ambulance) than ICSK; it is therefore more widely available, and may be the preferred mode of treatment in community hospitals where cardiac catheterization facilities are not readily available, if streptokinase is to be given at all.
Collapse
|
43
|
Sheehan JC, Chacko E, Commons TJ, Lo YS, Ponzi DR, Schwabacher A, Solomon N, Demain AL. In vitro biological activities of 6-isosteric penicillins and 7-isosteric cephalosporins. J Antibiot (Tokyo) 1984; 37:1441-8. [PMID: 6334681 DOI: 10.7164/antibiotics.37.1441] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Antibiotic and penicillinase inhibitor activities of various penicillin and cephalosporin analogs are reported. The compounds include C-6 penicillin and C-7 cephalosporin carbon, oxygen and sulfur analogs obtained by replacing the NH of the amide side chains with CH2, O and S, respectively. In almost all cases, analogs were considerably less active than the standard compounds (benzylpenicillin and cephalothin). However, some of the analogs act as penicillinase inhibitors.
Collapse
|
44
|
Sheehan JC, Commons TJ, Lo YS. Photochemical conversion of beta,beta,beta-trichloroethyl 6-diazopenicillanate into 6beta-thiolpenicillin derivatives. J Org Chem 1977; 42:2224-9. [PMID: 195025 DOI: 10.1021/jo00433a007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
45
|
|
46
|
|
47
|
|
48
|
|
49
|
|
50
|
|