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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
211

Le profil longitudinal de psychopathologie et d'utilisation des services des patients traités par électroconvulsivothérapie au Québec : une étude populationnelle

Lafrenière, Simon 01 February 2024 (has links)
Thèse ou mémoire avec insertion d'articles. / Objectif : Il est important de caractériser le profil des patients traités par ECT à des fins de surveillance épidémiologique. Cette étude visait à caractériser le profil longitudinal de psychopathologie et d'utilisation des services des patients traités pour la première fois par ECT. Méthode : Nous avons mené une étude populationnelle comparative à partir d'une base de données médico-administratives québécoise. Parmi les patients souffrant d'un trouble mental chronique hospitalisés en psychiatrie entre 2002 et 2016, ceux traités par ECT ont été comparés à des contrôles. Nous avons calculé les proportions en lien avec les diagnostics dans les cinq années précédant la date index et l'utilisation des services. Nous avons utilisé des modèles de régression logistique ajustés pour l'âge et le sexe pour étudier l'association entre le profil de psychopathologie (troubles internalisés, externalisés et troubles formels de la pensée/psychose) et la probabilité d'être traité par ECT. Résultats : 5 080 patients traités par ECT ont été comparés à 179 594 contrôles. 96.2% des patients ECT avaient reçu un diagnostic de dépression et 53.8% de trouble psychotique primaire. Dans le groupe ECT, seulement 1% des patients avaient reçu un diagnostic exclusif de dépression, et 47% avaient présenté à la fois des troubles internalisés, externalisés, et des troubles de la pensée/psychose. Les troubles dépressifs, anxieux, bipolaires et psychotiques étaient plus fréquents dans le groupe ECT. Avoir un diagnostic à la fois de trouble internalisé et de trouble de la pensée/psychose était associé à une augmentation de la cote d'être traité par ECT, comparativement au fait d'avoir exclusivement un trouble internalisé (RC ajusté = 1.51; IC 95% = 1.38, 1.66). Les indicateurs d'utilisation des services en santé mentale témoignaient d'une utilisation proportionnellement plus grande chez le groupe ECT. Conclusion : Les patients traités par ECT présentent un profil de psychopathologie complexe et une utilisation des services extensive. / Purpose: Electroconvulsive therapy (ECT) is effective for treating several psychiatric disorders. It is of primary importance to characterize the profile of ECT recipients for epidemiological purposes. We aimed to characterize the longitudinal profile of psychopathology and services utilization of patients first treated with ECT. Methods: We conducted a population-based comparative study using data from a national administrative database in Quebec. Patients who received a first ECT between 2002 and 2016 were compared to controls who were hospitalized in psychiatry but did not receive ECT. We performed descriptive analyses for the sociodemographic variables at the index date (the date of the first ECT for the ECT group and the first day of the hospitalization for the controls) and for the diagnoses, the profile of psychopathology (internalizing, externalizing, thought/psychotic disorders), the medical services utilization and the medication use in the five years prior to the index date. The proportions in the ECT and the non-ECT group were compared using the absolute standardized difference. To identify the association between the profile of psychopathology and the likelihood of the administration of ECT, we used logistic regression models.Results: 5 080 ECT patients were compared with 179 594 controls. Depressive, anxiety, bipolar and psychotic disorders were more frequent in the ECT group. 96.2% of ECT patients had been diagnosed with depression and 53.8% with a primary psychotic disorder. In the ECT group, 1.0% had been diagnosed exclusively with depression and 47.0% had disorders that belong to all three dimensions of psychopathology. Having both internalizing and thought/psychotic disorders was associated with an increased likelihood of receiving ECT vs having internalizing disorders alone (adjusted OR = 1.51; 95% CI = 1.38, 1.66). All indicators of mental health services utilization showed higher use among ECT patients. Conclusion: Our results provide robust evidence of complex psychopathology and extensive services utilization among ECT patients
212

Diffusion tensor MR imaging in the evaluation of treatment-induced white matter injury in childhood cancer survivors

Khong, Pek-Lan., 孔碧蘭. January 2006 (has links)
published_or_final_version / abstract / Medicine / Master / Doctor of Medicine
213

Modifiable risk factors for premature atherosclerosis in systemic lupus erythematosus. / CUHK electronic theses & dissertations collection

January 2006 (has links)
From this series of studies, we conclude that microalbuminuria may represent a novel risk factor in SLE, and lupus patients are more susceptible to endothelial dysfunction caused by hyperhomocysteinemia. The use of antimalarial agents is beneficial for lupus patients with active disease on corticosteroid, and antioxidant vitamins are useful in lowering the oxidative stress markers but do not affect the endothelial function. The results highlight the importance of targeting the known modifiable risk factors in order to prevent premature atherosclerosis in SLE patients. / My first step was to elucidate the prevalence and metabolic abnormalities in SLE patients with microalbuminuria. Twenty percent of patients were found to have microalbuminuria, which was associated with higher mean arterial pressure, total plasma antioxidant and homocysteine levels. / Next, we recruited 12 SLE patients and 15 controls and gave them oral methionine loading to achieve acute hyperhomocysteinemia. After oral methionine loading, von Willebrand factor (vWF) levels increased significantly in both groups. The increase in vWF was apparently more pronounced in SLE (20%) compared to controls (8%). Fibrinogen binding to platelets increased significantly only in SLE patients. / Systemic Lupus Erythematosus (SLE) is a chronic inflammatory disease of unknown cause which can affect any organs. Studies have reported an increased prevalence of cardiovascular disease (CVD) in these patients. We performed a series of studies to elucidate the interaction between microalbuminuria, dyslipidaemia, hyperhomocysteinemia, oxidative stress and immune dysregulation from the underlying disease in order to understand the accelerated atherosclerotic process in SLE. / We then evaluated the effects of long-term antioxidant vitamins. The plasma malondialdehyde level was significantly decreased after treatment in the vitamin group. Other oxidative stress markers and antioxidant levels and endothelial function remained unchanged in both groups. / We then proceeded to study the relative effect of antimalarial agents on fasting lipid fractions in patients with active SLE. Total cholesterol, very low-density lipoprotein cholesterol, and low density lipoprotein cholesterol levels were significantly lower in patients taking antimalarial agents, particularly for those patients taking concomitant prednisone. In the last study, we demonstrated that hydroxychloroquine had no significant effect on the serum lipid profile in these lupus patients with mild or inactive disease. / Tam Lai Shan. / Adviser: Edmund K. Li. / Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1550. / Thesis (M.D.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (p. 178-214). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / School code: 1307.
214

Anthropometric, biochemical and hormonal interrelationships in essential hypertension. / CUHK electronic theses & dissertations collection

January 2006 (has links)
Based on previous studies, the increasing prevalence of hypertension may be associated with factors such as obesity, dietary salt and fat intake. This study examined the common biochemical and anthropometric markers that are associated with blood pressure elevation, increasing metabolic and haemodynamic derangement in subjects in Hong Kong, and related those phenotypic markers to some genetic polymorphisms relevant to hypertension. / Five hundred and thirty nine Hong Kong Chinese subjects were examined. They were aged from 20 to 60 years, and were hypertensive or normotensive siblings from families with a hypertensive proband, and normotensive controls without a family history of hypertension. The interrelationships between pathophysiological changes and various neurohormones considered relevant to the development of hypertension were investigated. Fasting blood and 24 hour urine samples were collected. Plasma insulin, plasma leptin, plasma renin activity (PRA), serum angiotensin converting enzyme (ACE) activity, aldosterone, 24 hour urine noradrenaline, adrenaline, dopamine and kallikrein were measured. A robust assay for the measurement of urine free cortisol and cortisone and 6beta-hydroxycortisol by an LC-MS/MS method was developed and validated. The ratio between urine free cortisol and cortisone was used as an estimate of the activity of 11beta-hydroxysteroid dehydrogenase type II (11betaHSD2) for cortisol metabolism. These parameters were related to polymorphisms in three genes, the angiotensinogen (AGT) gene M23 5T, the dopamine D1 receptor (DD1R) gene A-48G and the dopamine D2 receptor (DD2R) gene Taq1 A polymorphisms. Analysis of variance was employed for the parameters in the three groups of subjects and for an age-matched sibling pair analysis (using 1 normotensive and 1 hypertensive sibling from each family). Comparisons between parameters were also made after dividing the whole population into 3 groups according to the tertiles of blood pressure. (1) Central (higher waist to hip ratio and waist circumferences) and general (greater body mass index and weight) obesity were found in both hypertensive patients and the normotensive siblings compared to the control subjects. These obesity indices showed strong positive relationships with increased insulin resistance and blood pressure. The obesity indices were also independently associated with systolic and diastolic blood pressure, with central obesity showing the stronger associations. (2) Hypertensives had more adverse lipid profiles, insulin resistance and higher fasting plasma glucose levels. This suggested that the blood pressure elevation in the hypertensives may be mediated through obesity and insulin resistance. (3) Both the hypertensive and normotensive members of sibling pairs had lower noradrenaline and cortisol excretion and higher activity of 11betaHSD2 compared to the normotensive controls. The result showed positive relationships between noradrenaline and increased obesity, insulin resistance and blood pressure, while the relationship between adrenaline and blood pressure was inversed. (4) Lower plasma ACE activity and aldosterone were found in the hypertensives and their siblings than in the normotensive controls. There was a reduction in PRA across the blood pressure tertiles as blood pressure increased. In addition to the higher 11betaHSD2 activity, a negative relationship between aldosterone and blood pressure in hypertensive siblings was observed. These findings may indicate the protective mechanism of these systems in this population. In subjects with the different polymorphisms of AGT M235T, there were no differences in the PRA, serum ACE activity or aldosterone, but lower urine cortisol and kallikrien were found in relation to increasing numbers of the T allele. There was a weak association between the AGT M235T polymorphism and hypertension. (5) Despite the strong correlation of dopamine excretion between hypertensive and normotensive siblings within families, lower dopamine levels were found in the normotensive siblings. A consistent positive relationship was found between urine dopamine and sodium excretion, which supports the concept of the natriuretic effect of dopamine. There was no phenotypic difference found in any of the biochemical parameters in relation to the DDIR A-48G and DD2R Taq1 A polymorphisms, but there were weak associations with blood pressure and these polymorphisms in the sibling study. / The normotensive siblings had metabolic abnormalities similar to but less severe than the hypertensive probands, which suggests that the genetic effects and interacting effect of shared lifestyle and environmental factors with their hypertensive family member may be influential on the healthy siblings. Adaptive changes were seen in some of the blood pressure regulating systems in both the hypertensive probands and the normotensive siblings. The major factors predisposing to the hypertension in these subjects appeared to be obesity and insulin resistance and the adaptive changes were insufficient to compensate for these in the hypertensive subjects. / Chu Ten Wah Tanya. / "March 2006." / Adviser: Brian Tom Linson. / Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1547. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (p. 304-341). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.
215

Up-regulation of heme oxygenase 1 and downstream bilirubin-mediated signaling cascade protect endothelial function in diabetes and obesity. / 糖尿病和肥胖中上调血红素氧化酶及其下游胆红素介导的信号通路保护血管功能的研究 / CUHK electronic theses & dissertations collection / Tang niao bing he fei pang zhong shang tiao xue hong su yang hua mei ji qi xia you dan hong su jie dao de xin hao tong lu bao hu xue guan gong neng de yan jiu

January 2013 (has links)
Liu, Jian. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 127-152). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts also in Chinese.
216

The angiotensin converting enzyme 2 - angiotensin (1-7) axis protects endothelial function against oxidative stress in diabetes. / 血管緊張素轉換酶 2 - 血管緊張素(1-7)信號軸保護糖尿病血管內皮功能的研究 / CUHK electronic theses & dissertations collection / Xue guan jin zhang su zhuan huan mei 2 - xue guan jin zhang su (1-7) xin hao zhu bao hu tang niao bing xue guan nei pi gong neng de yan jiu

January 2013 (has links)
Zhang, Yang. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 147-169). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.
217

Genetic association of chronic postsurgical pain. / CUHK electronic theses & dissertations collection

January 2013 (has links)
Tian, Yuanyuan. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 101-124). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts also in Chinese.
218

The effect of maternal diabetes on development of male and female mouse embryos. / CUHK electronic theses & dissertations collection

January 2013 (has links)
Leung, Siu Lun. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 153-190). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts also in Chinese.
219

Image analysis of retinal vascular network geometry and its relationship to cardiovascular complications. / 圖像分析視網膜血管網的特徵及其與心血管疾病的關係 / CUHK electronic theses & dissertations collection / Tu xiang fen xi shi wang mo xue guan wang de te zheng ji qi yu xin xue guan ji bing de guan xi

January 2012 (has links)
目的1)發現與中風相闋的視網膜特徵2) 利用視網膜特徵建立統計模型對老年人中風風險進行分類。 / 方法:配對病例對照研究。病例為中風患者,一部分中風患者來自於糖尿病眼病的篩查項目,另外一部分是腦內科的中風患者。對照是沒有中風的老年人。對照來自糖尿病眼病篩查項目內沒有患中風的患者及在眼科門診沒有中風及特殊眼病的患者。對照與病例在年齡及是否患有糖尿病進行匹配。所有研究對象均來自香港威爾斯親王醫院。我們收集所有研究對象的中風危險因素,包括年齡,性別,吸煙,及是否患有糖尿病,高血壓,缺血性心髒病,心房顫動,高血脂。所有研究對象的彩色視網膜照片都被採集。我們應用軟件“ImageJ"分析並記錄視網膜動靜脈直徑,血管分叉係數,分叉角度,分叉對稱性,視乳頭周長。我們也記錄其他視網膜特徵,如動靜脈壓跡,出血,硬性滲出,動脈阻塞及血管彎曲性。獨立t檢驗用於對連續變量的單因素分析,卡方檢驗用於對分類變量的單因素分析。Logistic 回歸用於建立統計模型對中風風險進行分類。所有統計方法均應用SPSS16.0 軟件。 / 結果:本研究納入122 中風患者及122 例患者做對照。每組分別有81 例糖尿病患者, 41 例非糖尿病患者。視網膜特徵包括動靜脈直徑,血管彎曲度,出血,硬性滲出,動靜脈壓跡在兩組中有顯著性差異。我們建立風險模型對兩組患者進行風險分類。分類準確度最高達的模型裡面包括的因子有:1)中風相關危險因素包括:高血壓,糖尿病,心房顫動2) 視網膜特徵包括:動脈直徑,血管彎曲性,出血,動靜脈壓跡跟靜脈對稱性;3) 視網膜特徵間的交立作用包括:動脈直徑與靜脈對稱性,動脈直徑與出血,靜脈對稱性與血管彎曲度。分類的準確度為80 .4%。只包括視網膜特徵的分類模型的準確度為74.5% 。 / 結論:彩色視網膜照相可成為中風風險的分類工具。與中風相關的視網膜特徵包括血管直徑,血管彎曲度,血管對稱性,出血,動靜脈壓跡。視網膜特徵與中風之間的聯繫存在交互作用。 / Objective: 1) To detect retina characteristics that associated with stroke; 2) To develop a statistics model with variables of retina characteristics for classifying patients with stroke from those without stroke in aged population. / Method: Matched case control study. Patients with stroke from the diabetic retinopathy screening program and stroke patients from Acute Stroke Unit were selected as stroke cases. Controls (patients without history of stroke) with matched diabetes status and age were selected from the diabetic retinopathy screening program and eye outpatient clinics. All subjects in this study were from Prince of Wales Hospital, Hong Kong. Risk factors of stroke from all subjects were collected, including age, gender, diabetes, hypertension, hyperlipidemia, history of ischemic heart disease, atrial fibrillation and smoking. Color retina images of each subject were collected and analyzed. The retina characteristics, including diameters of arterioles and venules, bifurcation coefficients, bifurcation angles, branch symmetry, optic disc perimeter were extracted from the color retina images by software "ImageJ". Other retina characteristics including arteriole-venule nicking, hemorrhages, exudates, arteriole occlusion, and vessel tortuosity were also recorded. Independent t test and Chi-squire test were used to compare the continuous and categorical retina characteristics respectively between patients with stroke and those without stroke. Logistic model combining the risk factors of stroke and retina characteristics was established to classify patients with stroke from those without stroke. All data analysis was by SPSS 16.0. / Results: there were 122 stroke cases and 122 controls recruited in this study. There were 41 patients without diabetes and 81 patients with diabetes in each group. Retina characteristics including diameters of arterioles and venules, vessel tortuosity, hemorrhages, exudates, arteriole-venule nicking were significantly different between the two groups. We established risk models to classify patients with stroke from those without stroke. The risk model with highest accuracy of classification included 1) stroke risk factors including hypertension, diabetes and atrial fibrillation; 2) retina characteristics, including arteriole diameters, vessel tortuosity, hemorrhages, arteriolevenule nicking and venule symmetry; 3)interaction between retina characteristics, including arteriole diameters by venule symmetry, arteriole diameters by hemorrhage,and venule symmetry by vessel tortuosity. The accuracy of classification was 80.4%. Using retinal characteristics alone achieved an accuracy of 74.5%. / Conclusion: color retina images are a potential tool for stroke risk stratification. Useful characteristics found in the retinal images included vessel diameters, vessel tortuosity, vessel symmetry, hemorrhage, arteriole-venule nicking. The association between the retinal characteristic and stroke was modified by other retinal characteristics. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Li, Qing. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2012. / Includes bibliographical references (leaves 139-148). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese. / Abstract (English) --- p.i / Abstract (Chinese) --- p.iii / Acknoledgements --- p.v / Chapter Chapter 1 --- Introduction and review of the Literature --- p.1 / Chapter Section 1: --- Stroke prevention and risk assessment tools --- p.1 / Chapter Section 2: --- Rationale of relationship of vascular circulation between retina and brain --- p.9 / Chapter Section 3: --- Manifestation of hypertensive retinopathy and diabetic retinopathy --- p.12 / Chapter Section 4: --- Retina characteristics related to stroke --- p.15 / Chapter Section 5: --- How to make retina as a tool of risk stratification for stroke --- p.28 / Chapter Section 6: --- Rationale to do study to further explore the useful information in color retina images to make it as tool for stroke risk stratification --- p.31 / Chapter Chapter 2 --- Research hypothesis and general design --- p.33 / Chapter Chapter 3 --- Methods of retia characteristics extraction --- p.34 / Chapter Chapter 4 --- A Study of the Reliability of manual measurement of Retinal characteristics using ImageJ --- p.46 / Chapter Chapter 5 --- A study of comparison of retina characteristics between patients with stroke and patients without stroke --- p.55 / Chapter Section 1: --- Method --- p.56 / Chapter Section 2: --- Result-univariate analysis --- p.62 / Chapter Section 3: --- Results-stratification analysis --- p.68 / Chapter Section 4: --- Result-risk model building for stroke risk stratification --- p.79 / Chapter Chapter 6: --- Discussion --- p.118 / Chapter Chapter 7: --- Limitation of this study --- p.133 / Chapter Chapter 8: --- Future development and application of the study results --- p.134 / Appendix --- p.136 / Reference --- p.139
220

Proteomic study of the effects of palmitic acid on skeletal muscle cell and its relation with mitochondrial function. / CUHK electronic theses & dissertations collection

January 2012 (has links)
2 型糖尿病(T2D)的發展歷史悠久,但導致T2D 患者胰島素抵抗的確切病理還沒有完全理解。骨骼肌佔大多數(70-80%)的胰島素引導的葡萄糖的吸收,所以它一直是胰島素抵抗的研究焦點。許多 T2D 患者的骨骼組織顯示線粒體功能障礙,但線粒體功能障礙和胰島素抵抗之間的關係尚不清楚還在辯論中。在這個項目中,這種關係是通過研究游離脂肪酸(FFA)( 24 小時處理)對 C2C12 小鼠骨骼肌細胞的效果來闡明。 / 免疫印記法顯示FFA 誘導胰島素抵抗,結合二維電泳和質譜分析的蛋白質組學研究發現FFA 有抑制糖酵解,增加β-氧化作用,沒有改變檸檬酸循環和抑製氧化磷酸化的作用。FFA 抑制電子傳遞鏈的幾個組成部分,揭示線粒體功能障礙,背後的原因可推測為FFA 增加令β-氧化作用增加,但沒有協調改變率檸檬酸循環,導致積累不完全β-氧化的中轉體,導致線粒體過載,最終導致胰島素抵抗。 / There is a long history of Type 2 diabetes (T2D) research development, but the exact pathology leading to insulin resistance of T2D is still not fully understood. T2D is frequently characterized by tissue insulin resistance and it is often associated with an elevated concentration of palmitic acid (PA, a major kind of dietary fatty acid) in serum. Due to this correlation, much of the effort in the field had been concentrated on the effect of PA in insulin action and glucose metabolism, and how elevated PA could possibly cause insulin resistance in specific tissues. / Skeletal muscle accounts for the majority (70-80%) of insulin-mediated glucose uptake, so it has been the focus of insulin resistance studies. Many T2D patients having elevated serum free fatty acid (FFA, where PA is a kind of FFA) also show mitochondrial dysfunction in their skeletal tissue, but the relationship between mitochondrial dysfunction and insulin resistance in skeletal muscle remains unclear and under debate. In this project, the three-party relationship was elucidated by studying the effect of 24hrs of incubation of palmitic acid (PA) on skeletal muscle using C2C12 mouse skeletal cells as model. / PA-treated C2C12 cells show reduction in insulin-stimulated Akt phosphorylation when compared with untreated C2C12 cells. Comparative proteomic study for both total proteins and mitochondrial proteins with 2D gel electrophoresis and mass spectrometry unveil, when compared with untreated cells, PA-treated C2C12 cells show down-regulation in enzymes involved in glycolysis(e.g. glyceraldehyde-3-phosphate dehydrogenase, phosphoglycerate kinase, fructose-bisphosphate aldose A), up-regulation in enzymes involved in beta-oxidation(e.g. 3-ketoacyl-CoA thiolase, 3-hydroxyacyl-CoA dehydrogenase), and down-regulation in proteins involved in oxidative phosphorylation(e.g. ATP synthase subunits, NADH-ubiquinone oxidoreductase 75kDa subunit, cytochrome b-c complex subunit 1). / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Lam, Chor Kwan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2012. / Includes bibliographical references (leaves 69-78). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts also in Chinese. / Thesis/Assessment Committee --- p.i / Declaration --- p.ii / Abstract (in English) --- p.iii / Abstract (in Chinese) --- p.v / Acknowledgments --- p.vi / Table of Contents --- p.vii / List of Abbreviations --- p.x / List of Figures --- p.xiii / List of Tables --- p.xiv / Chapter 1. --- Literature review --- p.1 / Chapter 1.1. --- Introduction to diabetes mellitus --- p.1 / Chapter 1.1.1. --- Definition and prevalence --- p.1 / Chapter 1.1.2. --- Diagnosis and classification --- p.2 / Chapter 1.1.3. --- Symptoms and complications --- p.4 / Chapter 1.1.4. --- Causes and risk factors --- p.5 / Chapter 1.1.5. --- Prevention and treatment --- p.6 / Chapter 1.2. --- The role of muscle tissue in pathophysiology of T2DM --- p.7 / Chapter 1.3. --- Insulin receptor substrate-1 and Fatty acids-induced insulin resistance --- p.15 / Chapter 1.4. --- Introduction of proteomics --- p.18 / Chapter 1.4.1. --- The application of proteomics in disease discovery --- p.18 / Chapter 1.4.2. --- Application of Proteomics --- p.19 / Chapter 1.4.3 --- Two-dimensional gel electrophoresis --- p.20 / Chapter 1.4.4 --- Organelles proteomics --- p.21 / Chapter 1.4.5. --- Mass spectrometry --- p.22 / Chapter 1.4.6 --- Application of proteomic technology in disease pathology --- p.24 / Chapter 1.4.7 --- Current challenges --- p.25 / Chapter 1.5 --- Objectives --- p.27 / Chapter 2 --- Materials and Methods --- p.28 / Chapter 2.1 --- Fatty acid preparation --- p.28 / Chapter 2.2 --- Cell culture --- p.28 / Chapter 2.2.1 --- Treatment of C2C12 myotubes with Palmitic acid --- p.28 / Chapter 2.2.2 --- MTT assay for viability measurement --- p.29 / Chapter 2.2.3 --- Determination of the IC₅₀ values --- p.31 / Chapter 2.3 --- Proteomic analysis of C2C12 cells with and without PA treatment --- p.32 / Chapter 2.3.1 --- Protein sample preparation from C2C12 skeletal muscle cells --- p.32 / Chapter 2.3.2 --- Protein quantitation --- p.33 / Chapter 2.3.3 --- 2D Gel electrophoresis --- p.34 / Chapter 2.3.4 --- Image analysis --- p.36 / Chapter 2.3.5 --- In gel digestion and MALDI-ToF MS --- p.37 / Chapter 2.4 --- Mitochondrial purification and protein extraction --- p.38 / Chapter 2.4.1 --- Ultracentrifugation method --- p.38 / Chapter 2.4.2 --- Mitochondrial Isolation Kit --- p.39 / Chapter 2.5 --- Western Immunoblotting --- p.40 / Chapter 2.5.1 --- Protein sample preparation --- p.40 / Chapter 2.5.2 --- SDS-PAGE --- p.40 / Chapter 2.5.3 --- Western blotting --- p.40 / Chapter 2.5.4 --- Membrane Blocking and Antibody Incubations --- p.41 / Chapter 2.5.5 --- Detection of Proteins --- p.42 / Chapter 3 --- Results --- p.43 / Chapter 3.1 --- Differentiation of C2C12 myoblast into myotubes --- p.43 / Chapter 3.2 --- The effect of Palmitic acid on C2C12 Proliferation --- p.44 / Chapter 3.3 --- Comparison of total protein profiles of palmitic acid-treated C2C12 myotubes with control myotubes --- p.45 / Chapter 3.4 --- Western blotting of Akt and Phospho-Akt in C2C12 cells treated with Palmitic acid after acute exposure to insulin --- p.50 / Chapter 3.5 --- Comparison of two mitochondria isolation methodsultracentrifugation and mitochondrial isolation kit --- p.51 / Chapter 3.5.1 --- Quantity of extracted mitochondrial protein --- p.51 / Chapter 3.5.2 --- Purity of extracted mitochondrial protein --- p.52 / Chapter 3.6 --- Comparison of mitochondrial protein profiles between palmitic acid-treated and control C2C12 myotubes --- p.53 / Chapter 3.7 --- Western blotting of insulin receptor substrate-1 and its serine phosphorylation --- p.58 / Chapter 4 --- Discussion --- p.59 / Chapter 4.1 --- Investigation of anti-proliferating effect of Palmitic acid on C2C12 using MTT assay --- p.59 / Chapter 4.2 --- Comparison of total protein profiles of palmitic C2C12 myotubes with control myotubes --- p.60 / Chapter 4.3 --- Western blotting of insulin receptor substrate-1and its serine phosphorylation --- p.62 / Chapter 4.4 --- Western blotting of Akt and Phospho-Akt in C2C12 cells treated with Palmitic acid after acute exposure to insulin --- p.63 / Chapter 4.5 --- Comparison of mitochondrial protein profiles between palmitic acid-treated and control C2C12 myotubes --- p.65 / Chapter 4.6 --- Problems faced and future prospect --- p.68 / Chapter 5 --- References --- p.69

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