共查询到20条相似文献,搜索用时 140 毫秒
1.
3.
高血压视网膜病变是高血压常见的眼部并发症,血脂在高血压视网膜病变的发生发展中发挥一定作用.一方面血脂升高通过增加高血压的严重程度加重高血压视网膜病变;另一方面,血脂紊乱还可以导致血管内皮细胞损伤和微循环障碍. 相似文献
4.
5.
6.
高血压性视网膜病变的研究进展 总被引:3,自引:0,他引:3
郭艺 《国外医学:眼科学分册》1996,20(6):368-371
高血压性视网膜病变是高血压全身表现的一个方面,近年来对它的研究日益受到重视。本就高血压性视网膜病变的临床表现、病理生理机制、诊断方法和标准、以及与其它靶器官损害的联系等方面对新近的发展和进展作一归纳和概述。 相似文献
7.
高血压性视网膜病变为高血压患者常见的眼底病变.近年来,其传统分级方法饱受争议.一系列多焦视网膜电图及荧光素眼底血管造影术的研究结果表明,将高血压性视网膜病变传统分级的1、2级合并为轻度病变,3、4级合并为重度病变,而不是根据眼底镜检查得到的形态学差异进行高血压性视网膜病变的分级,可能更适应现代临床实践.目前认为视网膜病... 相似文献
8.
糖尿病合并高血压对视网膜病变的影响 总被引:3,自引:1,他引:3
糖尿病视网膜病变(diabeticretinopathy,DR)是糖尿病常见的眼底并发症。为了解合并高血压对DR发生发展的影响。我们对我院收治的325例2型糖尿病患者进行回顾性分析。1 资料与方法1.1 资料来源 1993~1995年住院的325例2型糖尿病者。详细记录每例患者的一般情况及有关家族史,入院时的糖化血红蛋白(HbAlc)水平,尿白蛋白排出率(urinaryalbuminexcretionrate,UAE),并计算体重指数(bodymassindex,BMI)。1.2 诊断标准 糖尿… 相似文献
9.
高血压大鼠视网膜微血管病变的病理基础 总被引:2,自引:1,他引:1
目的
探讨实验性高血压性视网膜病变的病理基础。
方法
16只大鼠手术切除其一侧肾脏,部分结扎另一侧肾动脉建立高血压动物模型,对照组16只大鼠模拟手术。采用常规光镜组织化学染色、免疫组织化学染色、电镜和组织化学电镜等技术,观察两组大鼠术后2周,1,2,4个月4个不同时间点视网膜微血管的改变。
结果
①高血压大鼠视网膜毛细血管基底膜(retinal capillary basement membrane,RBM)从术后2个月起即普遍增厚,至病程4个月时,其厚度约为对照组的2~2.5倍;②高血压大鼠RBM的增厚伴有其构成成分Ⅳ型胶原和层粘连蛋白的增多,并伴有RBM上负电荷位点数目的减少;③高血压大鼠术后2周出现视网膜毛细血管内皮细胞下水肿,与基底膜剥离的现象,病程4个月时周细胞可有水肿变性。
结论
高血压大鼠视网膜毛细血管壁的三层结构均有改变,这些改变是高血压性视网膜病变的病理基础。〖HTH〗
(中华眼底病杂志, 1999, 15: 163-166) 相似文献
10.
11.
Jayesh D Solanki Param J Kakadia Hemant B Mehta Jagdeep M Kakadia Chinmay J Shah 《Indian journal of ophthalmology》2021,69(11):3250
Purpose:Type 2 diabetes mellitus (T2DM) is known to produce diabetic retinopathy (DR). Pulse wave analysis (PWA) provides arterial stiffness (AS) and central hemodynamic (CH) parameters. We studied the effect of DR on AS and CH parameters in type 2 diabetics (T2D).Methods:We performed a cross-sectional study on 47 T2Ds attending a private ophthalmology clinic screened for DR by optical coherence tomography angiography and divided into NDR (non-DR), NPDR (non-proliferative DR), and PDR (proliferative DR). Mobil-o-graph (IEM, Germany) based oscillometric PWA yielded AS and CH parameters. They were further compared between groups stratified by DR with P value set at 0.05.Results:Participants had a mean age 62, mean diabetes duration 9 years, high mean BMI, and high prevalence of physical inactivity, hypertension, and poor diseases control. Significant differences were lacking in NPDR, NDR, and PDR in rate pressure product (mean 112.71 vs 116.06 vs 119.57), central pulse pressure (mean 46.50 vs 43.09 vs 42.72), stroke work (mean 153.36 vs 132.36 vs 146.08), augmentation index (mean 29.43 vs 33.14 vs 31.64), and aortic pulse wave velocity (mean 10.06 vs 9.08 vs 9.06). There was no clear pattern of distribution of most parameters among the three subgroups.Conclusion:We found a lack of association between DR and cardiovascular ageing studied by AS and hemodynamic parameters. It suggests a possible difference in risk factors for both of these aftermaths of T2DM and calls for further prospective studies with a large sample size. 相似文献
12.
目的 探讨妊娠期并发高血压及(或)高血糖与早产儿视网膜病变的关系。方法 回顾分析我院2014年3月至2015年2月早产儿或低出生体质量儿早产儿视网膜病变筛查情况及其孕母临床资料。对妊娠期高血压及妊娠期高血糖与早产儿视网膜病变发病的相关性进行分析。结果 收集451例早产儿或低出生体质量儿中早产儿视网膜病变患儿53例(11.75%),患病组与非患病组出生体质量、吸氧史、孕母年龄、孕母高血压及高血糖患病情况差异均有统计学意义(均为P<0.05)。早产儿视网膜病变与孕母患高血压情况呈正相关关系(rs=0.390,P<0.01),与孕母患高血糖情况亦正相关(rs=0.284,P<0.01)。妊娠期高血糖发生相对于妊娠期高血压的相对危险度Rr=2.03;妊娠期高血压发生相对于妊娠期血糖异常的相对危险度Rr=1.55。妊娠期高血压的发生与妊娠期高血糖疾病的发生亦具有相关性(χ2=24.37,P<0.01)。结论 妊娠期高血压与妊娠期高血糖与早产儿视网膜病变的发生相关,且妊娠期高血压与妊娠期高血糖的发病具有相关性。 相似文献
13.
周细胞与糖尿病视网膜病变 总被引:10,自引:5,他引:10
随着对周细胞生理,生化的研究进展,研究者们发现视网膜细血管周细胞与糖尿病视网膜病变的关系越来越密切,通过对周细胞的研究有助于阐明糖尿病视网膜病变的发病机理,从而为防治糖尿病视网膜病变提供一种新的思路。 相似文献
14.
血脂代谢异常与糖尿病视网膜病变的关系探讨 总被引:3,自引:2,他引:3
目的 探讨糖尿病视网膜病变(diabetic retinopathy,DR)与血脂代谢异常的关系.方法 采用大样本多中心研究方法,对符合纳入标准的603例糖尿病患者按照诊断标准分组,所有患者均经常规眼科检查及眼底荧光素血管造影术确定DR的分期,本组患者临床前期166例,非增生期296例和增生期141例,检测所有患者总胆固醇(total cholesterol,TCH)、甘油三脂(triglyceride,TG)、高密度脂蛋白胆固醇(high density lipoprotein,HDL)和低密度脂蛋白胆固醇(low density lipoprotein,LDL).结果 各期DR HDL、LDL、TCH和TG的差异无统计学意义(P>0.05),但各期TG平均水平均高于正常(正常值0.56~1.70 mmol·L-1).同时以各指标正常值为标准判定血脂各项指标异常率,结果显示HDL、LDL、TG的异常率在DR不同时期间差异无统计学意义(P>0.05),但DR各期间TCH异常率差异有统计学意义(P<0.05).TG与TCH在DR的不同时期表现出明显的异常,且随DR病情严重程度的加重有增加趋势.结论 脂质代谢异常可促使糖尿病患者DR的发生、发展,在防治DR时,应注意控制血脂. 相似文献
15.
目的:探讨变性性近视( degenerative myopia )与糖尿病视网膜病变( diabetic retinopathy,DR)的相关性。 方法:2型糖尿病患者106例,按是否合并变性性近视分为变性性近视组(48例)和非近视组(58例),均行眼底检查及眼底血管荧光造影( fluorescence fundus angiography,FFA),明确DR分期,对两组DR患病率及分期进行比较分析。 结果:变性性近视组DR患病率70.8%,仅有Ⅰ期或Ⅱ期表现,无增殖期改变;非近视组患者DR患病率93.1%,Ⅰ~Ⅴ期病变均有发生。 结论:变性性近视可以阻止DR的发生,可能是DR的保护性因素。 相似文献
16.
17.
目的探讨糖尿病视网膜病变(diabetic retinopathy,DR)与血清胆红素水平的关系。方法选取新乡医学院第三附属医院内分泌科2010年5月至2011年9月住院的2型糖尿病患者96例,根据眼底检查结果分为无DR(non-DR,NDR)组(55例)和DR组(41例),比较2组患者血清胆红素水平的差异。结果 DR组的血清总胆红素为(8.19±1.67)μmol·L-1,直接胆红素为(2.37±0.62)μmol·L-1,间接胆红素为(5.82±1.60)μmol·L-1,均低于NDR组的(11.58±2.38)μmol·L-1、(3.51±0.85)μmol·L-1和(8.20±2.63)μmol·L-1,两组比较差异均有统计学意义(均为P<0.01)。结论 DR患者存在血清胆红素的降低,这可能与DR的发生发展相关。 相似文献
18.
Absence of hypertensive retinopathy in a Turkish kindred with autosomal dominant hypertension and brachydactyly 下载免费PDF全文
L. Hattenbach H. Toka O. Toka H. Schuster F. Luft 《The British journal of ophthalmology》1998,82(12):1363-1365
BACKGROUND—A 60 member Turkish kindred with autosomal dominant hypertension, which cosegregates completely with brachydactyly and short stature, was studied. Affected people have severe hypertension and generally die of stroke by the age of 50. The hypertension closely resembles essential hypertension and, accordingly, the mechanisms of blood pressure elevation are unknown. The gene responsible was mapped to chromosome 12p.
METHODS—All 29 affected family members underwent a basic physical examination and funduscopy. Other than markedly elevated blood pressures and the residua of stroke in a few subjects, the apparent lack of end organ damage was striking, including the normal appearing fundi. Five affected individuals were studied in a clinical research unit study. All underwent a complete ophthalmological examination. Fluorescein angiograms were obtained in three subjects.
RESULTS—Systolic blood pressures ranged from 170 to 250 mm Hg, while diastolic blood pressures ranged from 100 to 150 mm Hg in affected individuals. In all affected subjects, the fundi were only minimally altered or clinically normal. All three fluorescein angiograms were normal. Despite severe hypertension since childhood the patients showed no signs of hypertensive retinopathy.
CONCLUSIONS—The absence of hypertensive retinopathy in this novel form of inherited hypertension is due to an altered structure of retinal arteriolar walls or some other protective mechanism. Since evidence of end organ damage is scarce in other organs as well, the protective mechanism appears to be generalised.
Keywords: hypertension; retinopathy; genetics; fundus, fluorescein angiography 相似文献
METHODS—All 29 affected family members underwent a basic physical examination and funduscopy. Other than markedly elevated blood pressures and the residua of stroke in a few subjects, the apparent lack of end organ damage was striking, including the normal appearing fundi. Five affected individuals were studied in a clinical research unit study. All underwent a complete ophthalmological examination. Fluorescein angiograms were obtained in three subjects.
RESULTS—Systolic blood pressures ranged from 170 to 250 mm Hg, while diastolic blood pressures ranged from 100 to 150 mm Hg in affected individuals. In all affected subjects, the fundi were only minimally altered or clinically normal. All three fluorescein angiograms were normal. Despite severe hypertension since childhood the patients showed no signs of hypertensive retinopathy.
CONCLUSIONS—The absence of hypertensive retinopathy in this novel form of inherited hypertension is due to an altered structure of retinal arteriolar walls or some other protective mechanism. Since evidence of end organ damage is scarce in other organs as well, the protective mechanism appears to be generalised.
Keywords: hypertension; retinopathy; genetics; fundus, fluorescein angiography 相似文献
19.