脂肪细胞因子与2型糖尿病的防治

脂肪细胞因子与2型糖尿病并发症关系密切,随着对胰岛素抵抗(IRS)在2型糖尿病作用的认识,脂肪细胞因子的提出,使2型糖尿病并发症防治观念发生了根本的转变,提出了2型糖尿病并发症关防治新策略:从以降糖治疗为主到全面综合防治.对脂肪细胞因子和脂肪细胞因子与2型糖尿病并发症的关系的认识,体现了循证医学的思想和创新思维的启动.     

脂肪细胞因子与2型糖尿病的防治

脂肪细胞因子与2型糖尿病并发症关系密切,随着对胰岛素抵抗(IRS)在2型糖尿病作用的认识,脂肪细胞因子的提出,使2型糖尿病并发症防治观念发生了根本的转变,提出了2型糖尿病并发症关防治新策略:从以降糖治疗为主到全面综合防治。对脂肪细胞因子和脂肪细胞因子与2型糖尿病并发症的关系的认识,体现了循证医学的思想和创新思维的启动。     

2型糖尿病大血管病变机理和糖尿病治疗

2型糖尿病大血管病变与代谢综合征密切相关.现代医学认为两者的根本原因是胰岛素抵抗,导致糖耐量下降,血脂紊乱,高胰岛素血症,高血压和高凝状态等.从系统论的观点阐述了代谢综合征的相互关系和2型糖尿病大血管病变发病机理,并进一步从该观点阐明2型糖尿病的防治策略.     

NAFLD合并2型糖尿病血尿酸水平与胰岛素抵抗的相关性研究

探讨非酒精脂肪肝(NAFLD)合并2型糖尿病(T2DM)患者血尿酸(SUA)水平与胰岛素抵抗的相关性.分析NAFLD合并T2DM患者78例(合并组),单纯NAFLD组59例,单纯T2DM组80例,健康体检者80例(对照组).比较四组临床参数的差异、SUA水平与胰岛素抵抗的相关性.结果合并组较其余三组胰岛素抵抗指数和SUA水平更高(P＜0.01);相关性研究表明SUA水平与BMI、WHR、FBG、FINS、HOMA-IR呈正相关,与胰岛素敏感指数呈负相关,BMI、WHR、TC、SUA及有无脂肪肝是胰岛素抵抗的重要危险因素.SUA水平与NAFLD合并2型DM发生密切相关.     

2型糖尿病胰岛素治疗探讨

过去,人们(包括医护人员)对2型糖尿病的胰岛素治疗存在许多误区.通过糖尿病的流行病学,2型糖尿病的发病机制,早期胰岛素治疗对2型糖尿病的意义,及胰岛素的种类、剂型,和使用方法(包括补充疗法和替代疗法),以及2型糖尿病的治疗现状,来阐述胰岛素治疗对2型糖尿病的必要性.     

内质网应激和胰岛素抵抗

2型糖尿病的发病机制主要涉及胰岛素抵抗.近年来研究表明内质网应激可诱导胰岛素抵抗的形成,并使与改善胰岛素受体敏感性相关的内质网应激标志物分子氧调节蛋白150和转录因子X盒结合蛋白-1表达增强,表明内质网应激对细胞具有双重作用,一方面可诱导胰岛素抵抗,另一方面激发对应激的适应反应.     

代谢综合征的争议与共识

代谢综合征(metabolic syndrome,MS)的主要组分包括中心性肥胖、高血压、糖耐量异常、脂代谢紊乱,而胰岛素抵抗被认为是MS的病理生理学基础.目前,对MS的认识还存在诸多争议,主要包括MS的命名、病因机制和病理生理学基础、其各组分及其阈值的确定以及对心血管疾病的预测价值.尽管存在争议,MS概念的提出将有助于对高危人群的心脑血管疾病及糖尿病的防治.     

2型糖尿病一级亲属代谢相关指标分布规律的研究

为了研究2型糖尿病(DM)家系一级亲属的代谢相关指标变化规律,选择55个2型糖尿病家系中糖尿病患者的一级亲属为研究对象,按照糖耐量试验结果分组,比较组间血压、血糖、血脂、C肽、胰岛素等指标。结果显示,2型糖尿病家系一级亲属各组血脂水平的变化差异无显著性,而血糖、胰岛素抵抗等指标差异有显著性。由此得出结论,2型DM家系一级亲属血脂、血糖、血压、胰岛素等指标均有一定程度的异常,且各组间的血糖、血压、胰岛素抵抗等差异显著于血脂水平的变化。     

糖尿病的免疫抑制治疗

淡化糖尿病的分型为我们提供了一个全新的思维空间.即传统的1型和至少部分2型糖尿病可能都是一种自身免疫性疾病,而目前流行的炎症学说可能是对认可免疫损伤是糖尿病发病理论的一个过渡,我们应该重新审视糖尿病的早期治疗和研究其慢性并发症的发病机理.我们则采用小剂量、长时间的治疗理念,早期接受这种免疫治疗的患者出现低血糖的症状,遂减少胰岛素的剂量;再次出现低血糖,我们就继续减少胰岛素的荆量.结果,有部分患者完全摆脱了胰岛素.我们对糖尿病的再认识是建立在对多脏器活检的基础之上.我们的活检结果表明,糖尿病肾病存在着免疫损伤.糖尿病眼底病变是使患者致盲的主要病因,糖尿病患者的眼底病变是一种自身免疫损伤的结果.我们尝试用小剂量的免疫抑制剂环孢茵素A(25 mg bid)治疗糖尿病眼底出血,取得了不错的疗效,也证实糖屎病眼底病变是一种血管炎,与自身免疫痛变有关.其他的器官还包括垂体、大脑的血管、糖尿痛足、冠心痛、皮肤的病变和肌肉活检的免疫组化也均有证据表明,免疫损伤是导致多种慢性并发症的罪魁祸首,是一种多器官免疫损伤的结果无论是1型糖尿痛,还是2型糖尿病,肌细胞表面或多或少均有免疫复合物沉积.这些免疫复合物的存在势必会影响胰岛素与肌肉细胞表面的胰岛素受体结合,即胰岛素抵抗的存在.为此,我们在临床上广泛采用了免疫抑制治疗的理念治疗糖尿病.应用小剂量胰岛素和小剂量环孢素A治疗早期发现的糖尿病取得了不错的疗效.唯一担心的副作用发生在肝脏,即部分糖尿病患者会出现总胆红索升高,而也有一部分患者总胆红素不升高.     

从2型糖尿病的发病机制谈糖尿病治疗的新策略

2型糖尿病的发病机制主要为胰岛素抵抗与胰岛β细胞分泌功能受损,二者相互依存、相互作用。2型糖尿病的治疗应以减轻胰岛素的抵抗和保护胰岛β细胞为主,以生活方式干预加二甲双胍作为基础治疗,根据不同个体在不同阶段所侧重的不同发病机制,采用联合、综合管理。     

Sex differences in the relation of depressive symptoms, hostility, and anger expression to indices of glucose metabolism in nondiabetic adults.

This study examined the relation of depressive symptomatology, hostility, and anger expression to indices of glucose metabolism and tested whether gender moderates these associations in a sample of 135 healthy, nondiabetic adults (75 men, 60 women). The severity of depressive symptoms, hostility, and anger expression was positively associated with estimated insulin resistance (IR) and insulin in women but not in men. Anger expression was positively associated with glucose in women only. A summary score of depressive symptoms, hostility, and anger expression was positively associated with estimated IR, insulin, and glucose in women but not in men. Hence, in women, IR and elevated levels of fasting insulin and glucose may be one pathophysiological mechanism mediating the increased risk of cardiovascular disease and Type 2 diabetes associated with these psychological attributes.     

Reprint of: 'Brain insulin signaling: A key component of cognitive processes and a potential basis for cognitive impairment in type 2 diabetes'

Understanding of the role of insulin in the brain has gradually expanded, from initial conceptions of the brain as insulin-insensitive through identification of a role in regulation of feeding, to recent demonstration of insulin as a key component of hippocampal memory processes. Conversely, systemic insulin resistance such as that seen in type 2 diabetes is associated with a range of cognitive and neural deficits. Here we review the evidence for insulin as a cognitive and neural modulator, including potential effector mechanisms, and examine the impact that type 2 diabetes has on these mechanisms in order to identify likely bases for the cognitive impairments seen in type 2 diabetic patients.     

Brain insulin signaling: a key component of cognitive processes and a potential basis for cognitive impairment in type 2 diabetes

Understanding of the role of insulin in the brain has gradually expanded, from initial conceptions of the brain as insulin-insensitive through identification of a role in regulation of feeding, to recent demonstration of insulin as a key component of hippocampal memory processes. Conversely, systemic insulin resistance such as that seen in type 2 diabetes is associated with a range of cognitive and neural deficits. Here we review the evidence for insulin as a cognitive and neural modulator, including potential effector mechanisms, and examine the impact that type 2 diabetes has on these mechanisms in order to identify likely bases for the cognitive impairments seen in type 2 diabetic patients.     

胰岛素抵抗与非酒精性脂肪性肝病

非酒精性脂肪性肝病是一种以肝细胞脂肪变性和脂肪贮积为病理特征但无过量饮酒史的临床综合征。肥胖、2型糖尿病和高脂血症被认为是非酒精性脂肪性肝病的重要危险因素。有研究表明胰岛素抵抗与非酒精性脂肪性肝病密切相关。脂质代谢异常、氧应激反应、瘦素、脂联素等与胰岛素抵抗的发生有相互作用,也影响着非酒精性脂肪肝病的发生发展。胰岛素抵抗在非酒精性脂肪性肝病发病机制上的作用以及与胰岛素抵抗相关的发病因素值得关注。通过体育锻炼与控制饮食热量逐渐减轻体重,并配合血糖及血脂的控制对非酒精性脂肪性肝病患者十分重要。     

Testing mediator variables in a resistance training intervention for obese adults with type 2 diabetes

A poor understanding of behaviour change mechanisms has hindered the development of effective physical activity interventions. The aim of this study was to identify potential mediators of change in a home-based resistance training (RT) program for obese individuals with type 2 diabetes. Obese individuals with type 2 diabetes (N?=?48) were randomly allocated to either an RT intervention (n?=?27) or a control group (n?=?21) for the 16-week study period. The study sample included 16 men and 32 women and the mean age of participants was 54.4 (±11.7) years. Participants in the RT group received a multi-gym and dumbbells and home supervision from a certified personal trainer. RT behaviour was measured using a modified Godin Leisure Time Questionnaire. Social-cognitive constructs were measured and tested in a mediating variable framework using a product-of-coefficients test. The intervention had a significant effect on RT behaviour (p?相似文献   

Physical Activity and Social Cognitive Theory: A Test in a Population Sample of Adults with Type 1 or Type 2 Diabetes

The purpose of the study was to test the Social Cognitive Theory (SCT; Bandura, 2004 ) for explaining physical activity (PA) in a large population sample of adults with type 1 or type 2 diabetes. Study objectives: (1) test the fit of the SCT structure in the total sample, and the diabetes sub-types; (2) determine the SCT structural invariance between the type 1 and type 2 groups; and (3) report explained variance and compare strength of association for the SCT constructs in predicting PA for both type 1 and type 2 groups. In all, 2,311 individuals with type 1 or type 2 diabetes were assessed on their self-efficacy, outcome expectancies, impediments, social support, goals, and physical activity at baseline and 1,717 (74.5%) completed these assessments again at 6 months. Multi-group Structural Equation Modeling was conducted. The findings provide evidence for the utility of the SCT in the diabetes samples. The SCT fits individuals with type 1 and type 2 diabetes except for SCT impediments, which appear to be obstructing goal-setting in individuals with type 2 diabetes only. Promotion of health behavior should target self-efficacy to set goals and change behavior. Outcome expectancies and social support are also important factors for setting goals and behavior performance.     

伴家族史的2型糖尿病危险因素的病例对照研究

为探讨2型糖尿病代谢特征及发病的危险因素,选取大连地区91例有家族史的T2DM患者为病例组,以44例患者的配偶（糖耐量正常）为对照组,进行流行病学问卷调查和体格检查,同时测定空腹血糖、空腹胰岛素、总胆固醇、甘油三酯、高密度脂蛋白、低密度脂蛋白等指标,采用稳态模型法计算两组的胰岛素抵抗指数和β细胞功能指数,并进行多因素非条件Logistic回归分析。结果显示：TG、腰臀比和Ln（HOMAIR）病例组高于对照组,而Ln（HOMAβ）则病例组低于对照组,均具有统计学意义（P〈0．05）。多因素非条件Logistic回归分析结果提示,影响T2DM发病的因素有心血管疾病史、Ln（HOMAIR）及Ln（HOMAβ）。由此可见T2DM患者存在血脂代谢异常;心血管疾病史和Ln（HOMAIR）为发病的危险因素,Ln（HOMAβ）为保护因素。