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第2届世界华人生物医学工程研讨会

作者： Chan CW1 Lee KM2 Yeung HY1 Qin L1 leung ks1 Cheng JCY1 1 Department of Orthopaedics of Traumatology Chinese University of Hong Kong Hong Kong (SAR) P.R. China 2 Lee Hysan Clinical Research Laboratories Chinese University of Hong Kong Hong Kong (SAR) P.R. China

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The Role of Osteocytes in Mechanostat: Steroid-associated Osteonecrosis in Rabbits with Both Ineffective and Catabolic Shift of Mechanostat

The Role of Osteocytes in Mechanostat: Steroid-associated Os...

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中华医学会第八届骨科学术会议暨第一届国际COA学术大会

作者： Cheung WH leung ks Musculoskeletal Research Laboratory Department of Orthopedics ＆ TraumatologyThe Chinese University of Hong KongHong Kong SAR Musculoskeletal Research Laboratory Department of Orthopedics ＆ TraumatologyThe Chinese University of Hong KongHong Kong SAR

＜正＞Aims: Osteocytes play an important role in the proposed ’ Mechanostat ’ in bone physiology. Osteonecrosis is characterized histopathologically as death of a significant amount of osteocytes. We accordingly hypothesized that there might be a shift of ’ Mechanostat ’ as well in steroid -associated osteonecrosis.

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Low Intensity Pulsed Ultrasound for Accelerating Bone-Tendon Junction Repair

Low Intensity Pulsed Ultrasound for Accelerating Bone-Tendon...

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2002年第9届全国运动医学学术会议

作者： NM Ho KM Lee ks leung Musculoskeletal Research Laboratory Department of Orthopaedics & Traumatology the Chinese University of Hong Kong Lee Hysan Clinical Research Laboratory The Chinese University of Hong Kong

Introduction Bone-tendon junction (BTJ) is characterized with a transitional fibrocartilage zone and its healing is difficult. In this study, we explored the application of low intensity pulsed ultrasound (LIPUS) to accelerate the bone to tendon junction healing, as LIPUS has demonstrated certain effectiveness in accelerating fracture healing, delayed union, non-union, and soft tissue repair process by stimulating some endogenous biological growth factors.

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Micro-Gravity-Induced Systemic Deterioration of Musculoskeletal System and Development of Preventive Strategy-A Rat Tail Suspension Model

Micro-Gravity-Induced Systemic Deterioration of Musculoskele...

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中国空间科学学会第七次学术年会

作者： leung ks Tam KF Ng Eric Lee KH Cheung HW Department of Orthopaedics and Traumatology The Chinese University of Hong Kong

＜正＞BACKGROUND and PURPOSE:Prolonged exposure to microgravity may cause systemic problems to all body systems,including the relevant musculoskeletal *** studies concentrated on either bone loss or muscle *** current... 详细信息

关键词： Rats Tail suspention Bone Skeletal muslce Bone-tendon junction

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Insufficient neovascularization and increased vascular permeability during inadequate repair of steroid-associated osteonecrosis lesion in a rabbit model

Insufficient neovascularization and increased vascular perme...

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第七届国际骨质疏松研讨会暨第五届国际骨矿研究会议

作者： ZHANG G SHENG H WANG YX YEUNG KW YEUNG HY CHEN CW CHEUNG WH LEE KM leung ks GRIFFITH JF QIN L Department of Orthopaedics & Traumatology The Chinese University of Hong Kong Department of Organ & Imaging The Chinese University of Hong Kong Lee Hysan Clinical Laboratory The Chinese University of Hong Kong

＜正＞Objectives To examine both bio-imaging-based function-architecture-morphology characteristics and underlying cell-molecule events of newly formed vasculature during inadequate repair of steroid-associated osteonecrosis（ON） lesion. Methods Forty-eight 28-week old male New-Zealand white rabbits received induction protocol for establishment of steroid-associated

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Upfront consolidation treatment with 131I-mIBG followed by myeloablative chemotherapy and hematopoietic stem cell transplantation in high-risk neuroblastoma

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Pediatric Investigation 2020年第3期4卷 168-177页

作者： Jianhua Feng Frankie WT Cheng Alex WK leung Vincent Lee Eva WM Yeung Hoi Ching Lam Jeanny Cheung Grace ks Lam Terry TW Chow Carol LS Yan Chi Kong Li Department of Paediatrics The Chinese University of Hong KongHong KongChina Department of Paediatrics The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouChina Department of Paediatrics and Adolescent Medicine Hong Kong Children’s HospitalHong KongChina Department of Clinical Oncology Prince of Wales HospitalThe Chinese University of Hong KongHong KongChina

Importance:131I-metaiodobenzylguanidine(131I-mIBG)has a significant targeted antitumor effect for ***,currently there is a paucity of data for the use of 131I-mIBG as a"front-line"therapeutic agent in those patients with newly diagnosed high-risk neuroblastoma as part of the conditioning regimen for myeloablative chemotherapy(MAC).Objective:To evaluate the feasibility of upfront consolidation treatment with 131I-mIBG plus MAC and hematopoietic stem cell transplantation(HSCT)in high-risk neuroblastoma ***:A retrospective,single-center study was conducted from 2003-2019 on newly diagnosed high-risk neuroblastoma patients without progressive disease(PD)after the completion of induction *** received 131I-mIBG infusion and MAC followed by ***:A total of 24 high-risk neuroblastoma patients were enrolled with a median age of 3.0 years at *** receiving this sequential consolidation treatment,3 of 13 patients who were in partial response(PR)before 131I-mIBG treatment achieved either complete response(CR)(n=1)or very good partial response(VGPR)(n=2)after *** a median follow-up duration of 13.0 months after 131I-mIBG therapy,the 5-year event-free survival and overall survival rates estimated were 29%and 38%for the entire cohort,and 53%and 67%for the patients who were in CR/VGPR at the time of 131I-mIBG ***:Upfront consolidation treatment with 131I-mIBG plus MAC and HSCT is feasible and tolerable in high-risk neuroblastoma patients,however the survival benefit of this 131I-mIBG regimen is only observed in the patients who were in CR/VGPR at the time of 131I-mIBG treatment.

关键词： Neuroblastoma 131I-mIBG Transplantation

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Prevalence of advanced liver fibrosis and steatosis in type-2 diabetics with normal transaminases:A prospective cohort study

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World Journal of Gastroenterology 2021年第6期27卷 523-533页

作者： Jasbir Makker Hassan Tariq Kishore Kumar Madhavi Ravi Danial Haris Shaikh Vivien leung Umar Hayat Muhammad T Hassan Harish Patel Suresh Nayudu Sridhar Chilimuri Division of Gastroenterology Department of MedicineBronxCare Health SystemBronxNY 10457United States KU School of Medicine-Wichita University of KansasWichitaKS 67214United States Department of Medicine BronxCare Health SystemBronxNY 10457United States

BACKGROUND Nonalcoholic fatty liver disease(NAFLD)and type-2 diabetes mellitus(T2DM)have an intricate bidirectional *** with T2DM,not only have a higher prevalence of non-alcoholic steatosis,but also carry a higher risk of progression to nonalcoholic *** still differ in their recommendations of screening for NAFLD among patients with *** To study the prevalence of NAFLD and advanced fibrosis among our patient population with *** During the study period(November 2018 to January 2020),59 adult patients with T2DM and 26 non-diabetic control group individuals were recruited *** with known significant liver disease and alcohol use were *** data and lab parameters were *** elastography was performed in all *** In the study group comprised of patients with T2DM and normal alanine aminotransferase levels(mean 17.8±7 U/L),81%had hepatic steatosis as diagnosed by *** hepatic fibrosis(stage F3 or F4)was present in 12%of patients with T2DM as compared to none in the control *** with T2DM also had higher number of individuals with grade 3 steatosis[45.8%vs 11.5%,(P1)and metabolic syndrome(84.7%vs 11.5%,P1)].CONCLUSION A significant number of patients with T2DM,despite having normal transaminase levels,have NAFLD,grade 3 steatosis and advanced hepatic fibrosis as measured by liver elastography.

关键词： Advanced liver fibrosis Diabetes Steatosis Normal transaminases Fatty liver disease Metabolic syndrome

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BAHA在鼻咽癌放疗术后伴中耳流脓患者中的应用

BAHA在鼻咽癌放疗术后伴中耳流脓患者中的应用

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中华医学会第十次全国耳鼻咽喉-头颈外科学术会议

作者： Gordon Soo Tsang SS Wong KT To KF leung SF John ks Woo C Andrew van Hasselt Michael CFTong Department of Otorhinolaryngology Head & Neck SurgeryThe Chinese University of Hong Kong Prince of Wales HospitalHong Kong SAR Departmentof Anawmical and Cellular Pathology The Chinese University of Hong Kong Prince of Wales HospitalHong Kong SAR Departmentof Clinical Oncology The Chinese University of Hong Kong Prince of Wales HospitalHong Kong SAR

背景鼻咽癌(Nasopharyngeal cancer,NPC)患者的主要治疗方法是放疗。但放疗后的中耳并发症及颞骨放射性骨坏死(ORN)所造成的听力损伤是摆在 NPC 患者面前的大难题。而传统的助听器可能加重耳漏和感染,并且耳模会对 ORN 患者的外耳道溃...

背景鼻咽癌(Nasopharyngeal cancer,NPC)患者的主要治疗方法是放疗。但放疗后的中耳并发症及颞骨放射性骨坏死(ORN)所造成的听力损伤是摆在 NPC 患者面前的大难题。而传统的助听器可能加重耳漏和感染,并且耳模会对 ORN 患者的外耳道溃疡造成直接的创伤。目的探讨 Baha 对 NPC 患者放疗后听觉损伤的治疗是否有益。病例对13例 NPC 放疗后伴听力损伤的患者分两个阶段,观察两年。疗效评定一期手术时的骨钻标本做组织切片。同时进行听力学评估、植入固定度观察、邻近皮肤分级及满意度问卷调查分析。结果尽管组织切片显示53．8％(n=7)植入部位未建立骨性连接,但到目前所有 BaHa 植入均在位(平均 FU=14．8月;跨度=12-26月),80％的 BaHa 使用者每天开机时间＞8小时,平均满意主为85％。所有病例反映转用 Baha 后耳漏减少。讨论对所选择 NPC 病要而言,BaHa 是一种理想的声音处理器。我们的结果显示所有入选病人的骨整合成功,主观听觉清晰度增高、耳漏减少,使用 BaHa 时间越长,患者的满意度越高。结论 Baha 对 NPC 伴有听力损伤的患者是一种非常有效的助听器。骨整合成功率与未放疗病人无明显差异。

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扩髓对髓内压和肺部脂肪栓塞的影响

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中华骨科杂志 1999年第8期19卷 494-497,I002页

作者：张毅敏梁国穗冯国培陈振宇香港中文大学矫形外科及创伤学系香港中文大学生物化学系

目的扩髓是髓内钉内固定手术的常用步骤, 由于可能引起肺部脂肪栓塞综合征而受到争议。尽管已知扩髓可使髓内压升高, 但髓内压升高和肺部脂肪栓塞之间的关系以及肺部脂肪栓子的来源仍不清楚。作者用山羊制作动物模型,研究扩髓对髓内压... 详细信息

目的扩髓是髓内钉内固定手术的常用步骤, 由于可能引起肺部脂肪栓塞综合征而受到争议。尽管已知扩髓可使髓内压升高, 但髓内压升高和肺部脂肪栓塞之间的关系以及肺部脂肪栓子的来源仍不清楚。作者用山羊制作动物模型,研究扩髓对髓内压和肺部脂肪栓塞的影响。方法在实验组进行扩髓手术,而对照组只进行软组织切开术,然后测量髓内压及用薄层层析和气相色谱检测法分析骨髓和肺部组织的脂肪成分。结果在第一次扩髓时,髓内压升高最明显(532 m mHg)。对照组的肺组织没有脂肪栓塞,但全部实验组均有脂肪栓塞,而且栓塞的程度与髓内压的累积量成正比(r= 0-87,P=0-005)。骨髓脂肪的主要成分是甘油三酯,其含量最高的脂肪酸是油酸(18∶1,n- 9) 。在肺部脂肪检测中,实验组的甘油三酯明显升高(对照组0-10 mg/g,实验组0-45 mg/g,P=0-036),其中包括硬脂酸(18∶0)(对照组0-03 mg/g,实验组0-13 mg/g,P= 0-021)和油酸(18∶1,n- 9)( 对照组0-03 mg/g,实验组0-18 mg/g,P= 0-020)。结论本研究显示:肺部的脂肪栓子来源于骨髓脂肪,而且过度急速的扩髓可使髓内压升高,从而引起严重的肺部脂肪栓塞。

关键词：髓内钉固定术扩髓脂肪栓塞髓内压

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成骨活跃指标——骨特异性碱性磷酸酶

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中医正骨 1993年第4期5卷 16-16页

作者： ks.leung 谢利民中国中医研究院广安门医院

许多病理情况都可表现为体内成骨活跃,如骨肿瘤、骨折愈合过程等。血浆碱性磷酸酶是成骨活跃的生化指标之一,但其可来源于多种组织,而缺乏特异性。用血浆骨特异性碱性磷酸酶(BSAP)的测定作为成骨活跃的指标则更为可靠。本文对其应用价... 详细信息

许多病理情况都可表现为体内成骨活跃,如骨肿瘤、骨折愈合过程等。血浆碱性磷酸酶是成骨活跃的生化指标之一,但其可来源于多种组织,而缺乏特异性。用血浆骨特异性碱性磷酸酶(BSAP)的测定作为成骨活跃的指标则更为可靠。本文对其应用价值进行了临床观察。

关键词：骨碱性磷酸酶成骨生化指标

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