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Wang K, Gao FQ, Xu X. [The clinical practice and consideration for donor liver expansion]. Zhonghua Wai Ke Za Zhi 2023; 61:826-832. [PMID: 37653983 DOI: 10.3760/cma.j.cn112139-20230607-00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Liver transplantation is the most effective method to address end-stage liver disease. However, there is a huge imbalance between organ supply and demand in China. Recently,effective expansion of the donor liver has become a hot research direction in academia. Authors' group comprehensively integrates domestic and foreign evidence-based medical evidence, the latest academic outcomes and clinical experience. Based on the innovative viewshed of crossfusion between biomedical engineering and medicine, author group systematically elaborate in the main strategies for expanding the liver donor pool, including the multichannel expansion of marginal donor liver,multidimensional innovation of technologies in transplant surgery and diversified exploration of alternative resources of organs. The author group aims to promote the construction of a large cohort,the integration of big data,and the output of high quality research,achieving innovative theory and clinical translation in organ transplantation,thus promoting the higher quality development of liver transplantation in China.
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Affiliation(s)
- K Wang
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
| | - F Q Gao
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
| | - X Xu
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
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2
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Gao FQ, Zhang JM, Li CF. Paraneoplastic pemphigus misdiagnosed as juvenile dermatomyositis: A case report. Int J Rheum Dis 2023; 26:1826-1829. [PMID: 37166030 DOI: 10.1111/1756-185x.14684] [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: 11/06/2022] [Revised: 01/21/2023] [Accepted: 03/14/2023] [Indexed: 05/12/2023]
Abstract
Paraneoplastic pemphigus (PNP) is a rare autoimmune skin disease closely related to tumors, characterized by a maculopapular rash with mucosal pain, bronchiole occlusion, and respiratory failure may occur over time, even resulting in death. We report a rare case of a child with autoimmune PNP misdiagnosed as juvenile dermatomyositis (JDM), and summarize the key points of differentiation of clinical manifestations and auxiliary examinations of PNP and JDM. When the diagnosis is not clear because the patient has features not typical of JDM, then skin biopsy and other diagnostic studies should be considered prior to any immunosuppressive therapy, as this could potentially obscure and delay the diagnosis of malignancy.
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Affiliation(s)
- Feng-Qiao Gao
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Nan Li Shi Road No. 56, Beijing, 100045, China
| | - Jun-Mei Zhang
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Nan Li Shi Road No. 56, Beijing, 100045, China
| | - Cai-Feng Li
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Nan Li Shi Road No. 56, Beijing, 100045, China
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3
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Gao FQ, Zhang JM, Li CF. Clinical Presentation and Treatment of Juvenile Idiopathic Arthritis Combined with Lung Disease: A Narrative Review. Rheumatol Ther 2023; 10:507-522. [PMID: 36906693 PMCID: PMC10008073 DOI: 10.1007/s40744-023-00542-4] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/13/2023] [Indexed: 03/13/2023] Open
Abstract
Juvenile idiopathic Arthritis (JIA) is a common rheumatic disorder in children that can cause multiple systems to be affected simultaneously, leading to severe clinical symptoms and a high mortality rate in those with pulmonary involvement. Pleurisy is the most common manifestation of pulmonary involvement. At the same time, other conditions, such as pneumonia, interstitial lung disease, occlusive bronchiectasis, and alveolar protein deposition, have been increasingly reported in recent years. This review aims to provide an overview of the clinical manifestations of JIA lung damage and the current treatment options to assist in identifying and treating JIA lung involvement.
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Affiliation(s)
- Feng-Qiao Gao
- Department of Rheumatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Nan Li Shi Road No. 56, Beijing, 100045 China
| | - Jun-Mei Zhang
- Department of Rheumatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Nan Li Shi Road No. 56, Beijing, 100045 China
| | - Cai-Feng Li
- Department of Rheumatology, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Nan Li Shi Road No. 56, Beijing, 100045 China
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Zhang JM, Gao FQ, Li CF, Kuang WY, Deng JH, Tan XH, Li C, Li SP. Camptodactyly-Arthropathy-Coxa Vara-Pericarditis Syndrome: The First Familial Case in China and Novel Mutations of the Proteoglycan 4 Gene. J Rheumatol 2022; 49:1400-1402. [PMID: 36109080 DOI: 10.3899/jrheum.220236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jun-Mei Zhang
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Feng-Qiao Gao
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Cai-Feng Li
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
| | - Wei-Ying Kuang
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Jiang-Hong Deng
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Xiao-Hua Tan
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Chao Li
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Shi-Peng Li
- Department of Rheumatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
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Gao FQ, Han J, Zhang QY, Ma JH, Sun W, Cheng LM, Li ZR, Ma J. [Genetic expression differences of 11 beta-hydroxysteroid dehydrogenase in the bone microvascular endothelial cells derived from different regions of the human femoral head]. Zhonghua Yi Xue Za Zhi 2020; 100:3457-3462. [PMID: 33238679 DOI: 10.3760/cma.j.cn112137-20200331-01029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the expression levels and activation differences of 11beta-hydroxysteroid dehydrogenase (11beta-HSD) gene in bone microvascular endothelial cells (BMECs) in different regions of human femoral head. Methods: Tissue specimens of femoral heads were obtained from hip arthroplasty carried out in China-Japan Friendship Hospital from January 2017 to June 2018. And the BMECs we isolated, purified, identified and cultured from different regions of the human femoral head: in the subchondral and cancellous bone regions. The BMECs from the two regions were intervened by hydrocortisone with a series of low concentration gradients (0, 0.03, 0.06, 0.10 mg/ml) respectively. The cell phenotype and functional status of BMECs and cell migration were detected by scratch experiments, and the angiogenesis in different regions of the femoral head was observed. The mRNA and protein expression of 11beta-HSD1, 11beta-HSD2 in BMECs were detected by real-time fluorescence quantitative polymerase chain reaction (RT-PCR) and Western-blot method, respectively. Results: With the increase of the concentration of hydrocortisone, the 11beta-HSD1 mRNA and protein expression of BMECs in the subchondral and cancellous bone regions of the femoral head increased significantly, and the 11beta-HSD1 mRNA and protein expression of BMECs in the subchondral bone region was significantly lower than those in cancellous bone region (all P<0.05). The 11beta-HSD2 mRNA and protein expression of BMECs in the cancellous bone region showed a slow decrease first and then increased slightly at 0.10 mg/ml, while the expression in the subchondral bone region was the opposite. The 11beta-HSD2 mRNA and protein expression of BMECs in subchondral bone region was slightly higher than those in cancellous bone region (all P<0.05), but there was no significant statistical difference between the two regions at 0.10 mg/ml (0.123±0.018 vs 0.126±0.021, 0.577±0.231 vs 0.609±0.174, t=1.380, 0.409, both P>0.05). At different times of the 0.06 mg/ml hydrocortisone intervention, there was no significant differences in scratch closure rate, the number of BMECs lumen, the number of buds and the length of tubule branches in different regions of the femoral head (all P>0.05). Conclusion: The 11beta-HSD expression of BMECs in different regions of human femoral head is significantly different. The 11beta-HSD1 is high-expressed, but 11beta-HSD2 is low-expressed in BMECs of the cancellous bone region, and those are opposite in the subchondral bone region, which helps to explain the pathological characteristics and pathogenesis of hormonal osteonecrosis.
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Affiliation(s)
- F Q Gao
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - J Han
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - Q Y Zhang
- Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - J H Ma
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - W Sun
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - L M Cheng
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - Z R Li
- Osteonecrosis and Joint Preservation Reconstruction Center, Beijing Key Laboratory of Immune Inflammatory Diseases, Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - J Ma
- Department of Orthopedics, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750001, China
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Gao FQ, Wang LE, Gong SS, Wang ZX, Liang WQ. [Cause analysis of non dry ear after canal wall down mastoidectomy]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:530-533. [PMID: 29798085 DOI: 10.13201/j.issn.1001-1781.2018.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the possible causes of non dry ear after canal wall down mastoidectomy(CWD).Method:Clinical data of 42 patients undergoing revision CWD in our hospital were analyzed retrospectively,which included history,symptoms,signs,audiological examination,imaging examination, intraoperative findings and postoperative follow-up.All patients underwent CWD and tympanoplasty under general anesthesia.Result:Twenty-six cases were insufficient opened of sinodural angle,36 cases remained mastoid air cell(9 cases is mastoid tip air cell remained),13 cases were inadequate exposured of anterior epitympanic recess, 23 cases were inadequate exposured of posterior tympanum, 25 cases had high facial ridge, posterior facial nerve and labyrinth air cell were 5 cases,3 cases had granulation in round window, 5 cases had dysfunctional eustachian tube, 32 cases had narrow external acoustic meatus. During 3 months,6 months and 1 year follow-up, all 42 cases patients under revision CWD presented with dry ears.Conclusion:Insufficient opened of sinodural angle and mastoid air cell,inadequate exposured of anterior epitympanic recess and posterior tympanum, high facial ridge, narrow external acoustic meatus are all the possible causes of no-dry ear after CWD; As the location of concealment, posterior facial nerve and labyrinth air cell are difficult to clean. The dressing cavity do not be cleaned in time after operation is also the underlying cause of postoperative non-dry ear.
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Affiliation(s)
- F Q Gao
- Department of Otolaryngology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
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Gao FQ, Sun W, Xing GY. [The interpretation on ESWT indications and contraindications of international society for medical shockwave treatment]. Zhonghua Yi Xue Za Zhi 2017; 97:2411-2415. [PMID: 28835041 DOI: 10.3760/cma.j.issn.0376-2491.2017.31.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Wang ZX, Wang LE, Gong SS, Han SG, Gao FQ. [Electrically evoked auditory brainstem responses in patients with absence of cochlear modiolus receiving cochlear implantation]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:111-115. [PMID: 29871199 DOI: 10.13201/j.issn.1001-1781.2017.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Indexed: 11/12/2022]
Abstract
Objective:The purpose of this study was analyzing the characteristic of the electrically evoked auditory brainstem responses (EABR) of cochlear implantation (CI) patients with absence of cochlear modiolus (ACM) and comparing the EABR results in deaf patients with normal anatomic structures. Also we assessed the auditory rehabilitation of ACM patients after cochlear implantation.Method:Twenty-eight profoundly deaf patients were contained, 14 of them were ACM (group A) and the rest were normal anatomic structures (group B). They all received Austria cochlear implants from 2004 to 2015. Postoperative EABR were measured and recorded with No. 2, 6, 11 electrodes in patients receving cochlear implantation. The lead-out rate and threshold of EABR between groups were compared and analyzed. Result:The lead-out rates of EABR in group A was 71.4% and group B was 100%. The thresholds of EABR in group A were higher than group B (P< 0.05). In group A, there were no statistical difference in the thresholds of EABR among electrodes No.2,6 and 11. However, in group B, there were statistical difference in the thresholds of EABR between electrodes No.2 and 11 (P< 0.05), and the thresholds of No.2 was lower than No.11Conclusion:EABR could be used in assessing the objective auditory rehabilitation in ACM patients after cochlear implantation.
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Affiliation(s)
- Z X Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - L E Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - S S Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - S G Han
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - F Q Gao
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
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Ramirez J, Gibson E, Quddus A, Lobaugh NJ, Feinstein A, Levine B, Scott CJM, Levy-Cooperman N, Gao FQ, Black SE. Lesion Explorer: a comprehensive segmentation and parcellation package to obtain regional volumetrics for subcortical hyperintensities and intracranial tissue. Neuroimage 2010; 54:963-73. [PMID: 20849961 DOI: 10.1016/j.neuroimage.2010.09.013] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [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] [Received: 03/17/2010] [Revised: 09/01/2010] [Accepted: 09/03/2010] [Indexed: 12/16/2022] Open
Abstract
Subcortical hyperintensities (SH) are a commonly observed phenomenon on MRI of the aging brain (Kertesz et al., 1988). Conflicting behavioral, cognitive and pathological associations reported in the literature underline the need to develop an intracranial volumetric analysis technique to elucidate pathophysiological origins of SH in Alzheimer's disease (AD), vascular cognitive impairment (VCI) and normal aging (De Leeuw et al., 2001; Mayer and Kier, 1991; Pantoni and Garcia, 1997; Sachdev et al., 2008). The challenge is to develop processing tools that effectively and reliably quantify subcortical small vessel disease in the context of brain tissue compartments. Segmentation and brain region parcellation should account for SH subtypes which are often classified as: periventricular (pvSH) and deep white (dwSH), incidental white matter disease or lacunar infarcts and Virchow-Robin spaces. Lesion Explorer (LE) was developed as the final component of a comprehensive volumetric segmentation and parcellation image processing stream built upon previously published methods (Dade et al., 2004; Kovacevic et al., 2002). Inter-rater and inter-method reliability was accomplished both globally and regionally. Volumetric analysis showed high inter-rater reliability both globally (ICC=.99) and regionally (ICC=.98). Pixel-wise spatial congruence was also high (SI=.97). Whole brain pvSH volumes yielded high inter-rater reliability (ICC=.99). Volumetric analysis against an alternative kNN segmentation revealed high inter-method reliability (ICC=.97). Comparison with visual rating scales showed high significant correlations (ARWMC: r=.86; CHIPS: r=.87). The pipeline yields a comprehensive and reliable individualized volumetric profile for subcortical vasculopathy that includes regionalized (26 brain regions) measures for: GM, WM, sCSF, vCSF, lacunar and non-lacunar pvSH and dwSH.
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Affiliation(s)
- J Ramirez
- LC Campbell Cognitive Neurology Research Unit, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
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Dade LA, Gao FQ, Kovacevic N, Roy P, Rockel C, O'Toole CM, Lobaugh NJ, Feinstein A, Levine B, Black SE. Semiautomatic brain region extraction: a method of parcellating brain regions from structural magnetic resonance images. Neuroimage 2004; 22:1492-502. [PMID: 15275906 DOI: 10.1016/j.neuroimage.2004.03.023] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [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] [Received: 10/16/2003] [Revised: 03/03/2004] [Accepted: 03/08/2004] [Indexed: 11/19/2022] Open
Abstract
Structural MR imaging has become essential to the evaluation of regional brain changes in both healthy aging and disease-related processes. Several methods have been developed to measure structure size and regional brain volumes, but many of these methods involve substantial manual tracing and/or landmark identification. We present a new technique, semiautomatic brain region extraction (SABRE), for the rapid and reliable parcellation of cortical and subcortical brain regions. We combine the SABRE parcellation with tissue compartment segmentation [NeuroImage 17 (2002) 1087] to produce measures of gray matter (GM), white matter (WM), ventricular CSF, and sulcal CSF for 26 brain regions. Because SABRE restricts user input to a few easily identified landmarks, inter-rater reliability is high for all volumes, with all coefficients between 0.91 and 0.99. To assess construct validity, we contrasted SABRE-derived volumetric data from healthy young and older adults. Results from the SABRE parcellation and tissue segmentation showed significant differences in multiple brain regions in keeping with regional atrophy described in the literature by researchers using lengthy manual tracing methods. Our findings show that SABRE is a reliable semiautomatic method for assessing regional tissue volumes that provides significant timesavings over purely manual methods, yet maintains information about individual cortical landmarks.
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Affiliation(s)
- L A Dade
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Canada
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Gao FQ, Black SE, Leibovitch FS, Callen DJ, Rockel CP, Szalai JP. Linear width of the medial temporal lobe can discriminate Alzheimer’s disease from normal aging: the Sunnybrook Dementia Study. Neurobiol Aging 2004; 25:441-8. [PMID: 15013564 DOI: 10.1016/s0197-4580(03)00121-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2002] [Revised: 02/27/2003] [Accepted: 05/28/2003] [Indexed: 11/26/2022]
Abstract
To discriminate Alzheimer's disease (AD) from healthy controls, the thinnest medial temporal lobe (tMTL) width on 3D-MRI was measured according to a newly developed method at the inter-collicular sulcus (ICS) level with scans aligned to the long axis of the hippocampus in 22 mild, 27 moderate probable AD patients and 41 healthy controls. For comparison, MTL width replicating the technique of Jobst et al. (jMTL) as well as hippocampal and parahippocampal volumes, were also measured. Using logistic regression taking into account age, sex, and education, tMTL width classified mild AD from controls with a sensitivity of 86%, specificity of 95% and accuracy of 92%. Similar values were obtained for moderate or total AD group versus controls. By comparison, jMTL width was only useful in distinguishing moderate AD from controls, and volumetric measures were equally sensitive in classifying mild and moderate AD in our sample. This quick, reliable, and standardized measurement of tMTL can be helpful in differentiating even mild AD from controls with reasonable accuracy.
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Affiliation(s)
- F Q Gao
- Cognitive Neurology Unit, Neuroscience Research Program, Sunnybrook and Women's College Health Sciences Center, University of Toronto, A421-2075 Bayview Avenue, Toronto, Ont., Canada M4N 3M5
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Bocti C, Rockel C, Roy P, Gao FQ, Black SE. Differential topography of Alzheimer's disease and frontotemporal dementia: an MRI volumetric analysis from Sunnybrook dementia study. Brain Cogn 2004; 54:151-3. [PMID: 15025046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- C Bocti
- Department of Medicine (Neurology), Sunnybrook and Women's College Health Science Centre, University of Toronto, Toronto, Ont, Canada
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13
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Deshpande NA, Gao FQ, Bakshi SN, Leibovitch FS, Black SE. Simple linear and area MR measurements can help distinguish between Alzheimer's disease, frontotemporal dementia, and normal aging: the Sunnybrook dementia study. Brain Cogn 2004; 54:165-6. [PMID: 15025054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- N A Deshpande
- Department of Medicine (Neurology), Sunnybrook & Women's College, Health Sciences Centre, University of Toronto, Ont, Canada
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Gao FQ, Black SE, Leibovitch FS, Callen DJ, Lobaugh NJ, Szalai JP. A reliable MR measurement of medial temporal lobe width from the Sunnybrook Dementia Study. Neurobiol Aging 2003; 24:49-56. [PMID: 12493550 DOI: 10.1016/s0197-4580(02)00013-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We studied the hippocampal angle and spatial relationships of medial temporal lobe (MTL) structures, using midbrain colliculi and inter-collicular sulcus (ICS) as landmarks, and measured MTL width on axial 3D-T1-weighted MRI at ICS level in 41 normal, aged participants. Mean hippocampal angle was 29 degrees (range 17-42 degrees ) caudal to the anterior-posterior commissure (AC-PC) line. The slice at the ICS, parallel to the long axis of the hippocampus, best revealed a longitudinal view of hippocampus and parahippocampal gyrus in 76% of participants, compared to only 7% when slices were 20 degrees caudal to orbitomeatal line (OML), an accepted technique used to examine MTL width in previous CT studies. The MTL width measured midway and at its thinnest between the anterior-posterior borders of the midbrain was highly reproducible (intraclass correlation coefficients >0.98) using these new methods. These simple decision rules, individualized orientation along the hippocampus and using a standardized landmark like the ICS, make these measures more comparable across subjects, and hence more useful in detecting and monitoring MTL atrophy in dementia.
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Affiliation(s)
- F Q Gao
- Aging and Imaging Research, Cognitive Neurology Unit, Sunnybrook & Women's College Health Science Center, University of Toronto, A421-2075 Bayview Avenue, Toronto, Ont, Canada M4N 3M5
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Lee DH, Gao FQ, Rogers JM, Gulka I, Mackenzie IR, Parrent AG, Kubu CS, Munoz DG, McLachlan RS, Blume WT, Girvin JP. MR in temporal lobe epilepsy: analysis with pathologic confirmation. AJNR Am J Neuroradiol 1998; 19:19-27. [PMID: 9432153 PMCID: PMC8337339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE We evaluated the MR findings in patients with temporal lobe epilepsy to determine the predictive value of MR imaging in assessing patient outcome. METHODS MR studies from 186 of 274 consecutive patients who underwent temporal lobectomy for intractable epilepsy were reviewed retrospectively. Images were interpreted by an experienced neuroradiologist, who was blinded to the side of seizure activity and to pathologic findings. RESULTS MR imaging exhibited 93% sensitivity and 83% specificity in detecting hippocampal/amygdalar abnormalities (n = 121), and 97% sensitivity and 97% specificity in detecting abnormalities in the rest of the temporal lobe (n = 60). Abnormal high signal of the hippocampus on T2-weighted images had a sensitivity of 93% and specificity of 74% in predicting mesial temporal sclerosis (n = 115). The presence of hippocampal atrophy on MR correlated with the duration of seizures. Sensitivity and specificity of MR imaging in detecting temporal lobe tumors (n = 42) were 83% and 97%, respectively, based on abnormal signal and mass effect. After surgery, 63% of patients were seizure free and 28% had a significant reduction of seizure frequency at an average of 24 months (range, 12 to 78 months) after surgery. Patients with a single lesion in the anterior temporal lobe or hippocampus/amygdala had a better outcome than patients with multiple lesions (n = 22). Interrater agreement varied from 0.4 to 0.93, with best agreement for tumors or abnormal hippocampal signal on T2-weighted images. CONCLUSION MR imaging is highly sensitive in detecting and locating abnormalities in the temporal lobe and the hippocampus/amygdala in patients with temporal lobe epilepsy. Hippocampal atrophy appears to correspond to the duration of seizure disorder.
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Affiliation(s)
- D H Lee
- Department of Diagnostic Radiology, London Health Sciences Center, University of Western Ontario, Canada
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Lee DH, Gao FQ, Rankin RN, Pelz DM, Fox AJ. Duplex and color Doppler flow sonography of occlusion and near occlusion of the carotid artery. AJNR Am J Neuroradiol 1996; 17:1267-74. [PMID: 8871711 PMCID: PMC8338522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine whether color Doppler flow imaging with the use of slow-flow sensitivity improves sensitivity and specificity in the differentiation of occlusion and near occlusion of the internal carotid artery. METHODS Color Doppler and duplex sonography were performed in symptomatic patients who had angiographically confirmed occlusion and/or near occlusion of the internal carotid artery. The study consisted of two phases: in the first, we assessed the usefulness of color Doppler flow imaging by retrospectively reviewing the records of 35 patients with 36 angiographically confirmed occlusions or near occlusions of the internal carotid artery who were examined with color Doppler flow imaging at our institution during a period of 4 years; in the second phase, we incorporated color Doppler sonography into the routine scanning protocols of 39 patients with 41 occluded or nearly occluded internal carotid arteries seen over a period of 2 1/2 years. RESULTS Overall, color Doppler imaging correctly showed all 34 of the near occlusions (sensitivity, 100%) and 36 of the 43 occlusions (specificity, 84%). Seven patients with angiographically confirmed occlusion had sonographic findings that suggested near occlusion. In the first phase, eight near occlusions were misinterpreted as occlusions with conventional duplex sonography, but were correctly shown with color Doppler flow imaging. In the second phase, sensitivity increased from 50% to 100% (18 or 18) because of better detection of the nearly occluded lumen. This was at the expense of a decrease in specificity (from 100% to 78%). owing to identification of apparent flow in the internal carotid artery on color Doppler flow images in five of 23 occlusions. CONCLUSION Because of its ability to depict slow flow, color Doppler imaging with slow-flow sensitivity is superior to conventional duplex sonography for the noninvasive discrimination of occlusion from near occlusion of the internal carotid artery.
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Affiliation(s)
- D H Lee
- Department of Diagnostic Radiology, University Hospital, University of Western Ontario, London, Canada
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Gao FQ. [A study of muscle fibers typing on Duchenne muscular dystrophy]. Zhonghua Shen Jing Jing Shen Ke Za Zhi 1992; 25:273-7, 316. [PMID: 1291247] [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
Quantitative analysis of muscle fibers typing in 15 cases of Duchenne muscular dystrophy has been done. Mean diameter, area, variability coefficient were estimated by computer. The results show that type IIC fibers were remarkably increased and type IIB fibers was deficiency in DMD. Atrophy and hypertrophy occurred in different typing fibers. The results indicated that DMD has a prominent atrophy and hypertrophy and active regenerating process.
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Affiliation(s)
- F Q Gao
- PLA. Generar Hospital, Beijing
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