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171.
不同时间联合使用非洛地平和替米沙坦对高血压患者血压昼夜节律的影响及对左室肥厚的逆转作用 总被引:1,自引:0,他引:1
目的:研究不同时间联合使用非洛地平和替米沙坦对高血压患者血压昼夜节律的影响及对高血压左室肥厚的逆转作用。方法:将入选的86例高血压并发左室肥厚的患者随机分为2组,A组清晨顿服非洛地平和替米沙坦,B组清晨服用非洛地平,晚间服用替米沙坦,服药前及服药后每隔4周时分别测定患者诊室血压和24 h动态血压,测定用药前及用药36周时舒张期室间隔厚度(LVST),左室后壁厚度(LPWT)及舒张期左室内径(LVDd),并计算出心室重量(LVMT)。结果:2组用药后各时点收缩压及舒张压均低于用药前。B组夜间平均收缩压、夜间平均舒张压、晨峰血压升高程度、清晨收缩压、清晨舒张压、清晨脉压均较A组低。并且治疗36周后,B组的LVDd,LVST,LPWT均较A组减小(P<0.05)。结论:不同时间联合使用非洛地平和替米沙坦比清晨同时联合使用非洛地平和替米沙坦更能降低夜间血压、遏制清晨血压过度升高,改善高血压患者血压昼夜节律,并且在逆转左室肥厚方面,更有优势。 相似文献
172.
丹参对自发性高血压大鼠左室肥厚及心肌凋亡的影响 总被引:2,自引:0,他引:2
目的观察丹参对自发性高血压大鼠左室肥厚的作用及左室心肌组织细胞凋亡的影响,并探讨其作用机制。方法实验用WKY大鼠做阴性对照组,SHR大鼠分为对照组和治疗组。治疗组给予丹参注射液腹腔内注射12周,其余两组分别注射相当容积的蒸馏水。测量大鼠尾动脉收缩压(systolic b lood pressure,SBP)及左心室重量指数(left ventricu larm ass index,LVM I)。应用HE、VG染色、免疫组织化学的方法,结合计算机图像分析技术,检测心肌细胞的直径和面积、心肌组织胶原体积比例(collagen volum e fraction,CVF)、血管周围胶原面积和管腔面积比例(perivasu lar c ircum ferentiall area,PVCA),采用TdT介到的dUTP缺口末端标记技术(TUNEL)检测心肌细胞凋亡。结果与WKY大鼠相比,20周龄SHR大鼠的SBP、LVM I、心肌细胞的直径、面积、CVF、PVCA、心肌凋亡细胞数显著增加,用丹参治疗后,SHR除收缩压外余指标均显著性下降(P<0.05)。结论长期应用丹参治疗可预防和逆转高血压大鼠左室肥厚形成,其机制可能与丹参降低心肌细胞凋亡有关。 相似文献
173.
活血潜阳颗粒对自发性高血压大鼠血压及左心室肥厚的影响 总被引:5,自引:1,他引:4
目的探讨活血潜阳颗粒控制血压、逆转高血压左心室肥厚的作用及其机制。方法以自发性高血压大鼠(SHR)为高血压及高血压左心室肥厚模型,随机分为活血潜阳颗粒大、中、小剂量组,卡托普利组,松龄血脉康组,双蒸水组;并以WKY大鼠为正常对照组。检测大鼠尾动脉收缩压(SBP)、左心室质量指数(LVMI)、心肌细胞横径(TDM)及24h尿液中儿茶酚胺含量。结果①与WKY大鼠相比,SHR双蒸水组SBP、LVMI、TDM值显著升高;活血潜阳颗粒大、中剂量可显著降低SBP、LVMI及减小TDM,与松龄血脉康组对比,大剂量活血潜阳颗粒SBP显著降低,其余无明显差异,但降低值明显不及卡托普利组。②与WKY大鼠相比,SHR双蒸水组尿液中去甲肾上腺素(NA)、肾上腺素(A)、多巴胺(DA)的含量升高,其中NA有显著差异性;活血潜阳颗粒可显著降低尿液中NA、A的含量,呈一定量效关系,对DA的含量影响不明显,与松龄血脉康组相比,差异无显著性,但NA、A、DA的含量明显不及卡托普利组低。结论活血潜阳颗粒可逆转SHR左心室肥厚,其作用机制可能与降低血液循环中NA、A的含量有关。 相似文献
174.
目的探讨纤维鼻咽镜联合切割吸引器对腺样体肥大患儿血清肿瘤坏死因子-α(TNF-α)、白细胞介素-4(IL-4)、白三烯B4(LTB4)水平的影响。方法选取2017年2月至2019年7月在本院进行治疗的腺样体肥大患儿80例,按照随机数字表法分为观察组与对照组,各40例。对照组行传统经口腺样体刮除术,观察组行纤维鼻咽镜联合切割吸引器切除术,比较两组患儿血清TNF-α、IL-4、LTB4水平。结果术后,两组血清TNF-α、IL-4、LTB4水平均降低,且观察组低于对照组,差异有统计学意义(P<0.05);观察组术中出血量少于对照组,鼻腔恢复通气与咽痛持续时间短于对照组,差异有统计学意义(P<0.05);观察组并发症发生率略低于对照组,差异无统计学意义。结论纤维鼻咽镜联合切割吸引器的应用可减少术中出血量,促进恢复,降低腺样体肥大患儿血清TNF-α、IL-4、LTB4水平,且安全性较高。 相似文献
175.
Diego Iacono Peter Zandi Myron Gross William R. Markesbery Olga Pletnikova Gay Rudow Juan C. Troncoso 《Oncotarget》2015,6(16):14082-14091
Asymptomatic Alzheimer''s disease (ASYMAD) subjects are individuals characterized by preserved cognition before death despite substantial AD pathology at autopsy. ASYMAD subjects show comparable levels of AD pathology, i.e. β-amyloid neuritic plaques (Aβ-NP) and tau-neurofibrillary tangles (NFT), to those observed in mild cognitive impairment (MCI) and some definite AD cases. Previous clinicopathologic studies on ASYMAD subjects have shown specific phenomena of hypertrophy in the cell bodies, nuclei, and nucleoli of hippocampal pyramidal neurons and other cerebral areas. Since it is well established that the allele APOε4 is a major genetic risk factor for AD, we examined whether specific alleles of APOE could be associated with the different clinical outcomes between ASYMAD and MCI subjects despite equivalent AD pathology. A total of 523 brains from the Nun Study were screened for this investigation. The results showed higher APOε2 frequency (p < 0.001) in ASYMAD (19.2%) vs. MCI (0%) and vs. AD (4.7%). Furthermore, higher education in ASYMAD vs. MCI and AD (p < 0.05) was found. These novel autopsy-verified findings support the hypothesis of the beneficial effect of APOε2 and education, both which seem to act as contributing factors in delaying or forestalling the clinical manifestations of AD despite consistent levels of AD pathology. 相似文献
176.
目的探讨高血压心肌肥厚患者心脏交感神经分布与神经元轴突生长抑制因子勿动蛋白A(neurite out-growth inhibitor-A,Nogo-A)的表达变化。方法从我院老年患者尸体标本库中,随机入选男性高血压患者10例,并根据患者去世前1周心脏超声结果分为心肌肥厚组4例和非心肌肥厚组6例。检测超声心动图,并计算左心室重量指数。免疫组织化学分析测定酪氨酸羟化酶(tyrosine hydroxylase,TH)与Nogo-A的表达。结果与非心肌肥厚组比较,心肌肥厚组患者室间隔厚度、左心室后壁厚度、左心室重量指数明显升高(P<0.05);心肌肥厚组患者心肌TH阳性表达明显降低[(6.35±3.85)%υs(22.17±8.19)%,P<0.05],Nogo A表达明显增加[(11.34±7.16)%υs(2.17±4.10)%,P<0.05]。心肌肥厚患者心肌Nogo-A表达与心肌TH表达呈负相关(r=-0.33,P<0.05)。结论老年高血压心肌肥厚患者心肌交感神经分布减低,然而心肌神经元轴突生长抑制因子Nogo-A表达增加,两者间存在密切相关性。 相似文献
177.
Mohammed Z. Allouh Mohammed H. Aldirawi 《Anatomical record (Hoboken, N.J. : 2007)》2012,295(5):792-799
Mesterolone is a synthetic oral anabolic androgenic steroid used to treat hypogonadism. There are frequent reports of mesterolone abuse in human and equine sports to increase muscle mass and strength. However, limited information is available about how this drug exerts its effects on skeletal muscle. Satellite cells (SCs) are mononuclear myogenic stem cells that contribute to postnatal muscle growth and repair. As SC activation and subsequent differentiation to new myonuclei is a major event during muscle hypertrophy, this study investigated the influence of mesterolone on SC distribution within the pectoralis muscle of chickens. Specifically, this study tested the hypotheses that mesterolone induces avian skeletal muscle hypertrophy, and that mesterolone increases the number of SCs in avian skeletal muscle. Robust immunocytochemical techniques and morphometric analyses were used to calculate the numbers of SCs and myonuclei. Also, DNA concentration and Pax7 protein levels were measured to confirm immunocytochemical findings. Mesterolone significantly increased pectoralis mass and fiber size. All SC indices and number of myonuclei increased significantly by mesterolone administration. In addition, greater DNA concentration and Pax7 protein expression were found in mesterolone‐treated birds. This study indicates that mesterolone can induce avian skeletal muscle hypertrophy and that this is correlated with increased number of SCs. We suggest that SCs are key cellular intermediaries for mesterolone‐induced muscle hypertrophy. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc. 相似文献
178.
179.
《Clinical and experimental hypertension (New York, N.Y. : 1993)》2013,35(6):753-771
The present investigation examines the association of angiotesin I converting enzyme (ACE) genotypes with blood pressure and heart weight in an F2 population of rats derived from a cross between spontaneously hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats. ACE genotype of rats in the F2 population was determined using a microsatellite polymorphism. Our investigation revealed that cardiac mass was not correlated with blood pressure at 12 weeks of age within the SHR, WKY, F1 or F2 groups of rats. In male rats, ACE genotype accounted for approximately 20% of the difference in mean blood pressure between SHR and WKY rats. There was no effect in females. It was also responsible for 21%-29% of the difference in heart weight both in female and male animals. The allele derived from the SHR parent appeared recessive to the allele from WKY parent for both heart weight and blood pressure. These results suggest that a gene in the region of the ACE locus is one of the genetic factors influencing blood pressure and heart weight in SHR. 相似文献
180.
Kurt J. Pfeifer Angela Selzer Carlos E. Mendez Christopher M. Whinney Barbara Rogers Vinaya Simha Dennis Regan Richard D. Urman Karen Mauck 《Mayo Clinic proceedings. Mayo Clinic》2021,96(6):1655-1669
Perioperative medical management is challenging due to the rising complexity of patients presenting for surgical procedures. A key part of preoperative optimization is appropriate management of long-term medications, yet guidelines and consensus statements for perioperative medication management are lacking. Available resources utilize the recommendations derived from individual studies and do not include a multidisciplinary focus or formal consensus. The Society for Perioperative Assessment and Quality Improvement (SPAQI) identified a lack of authoritative clinical guidance as an opportunity to utilize its multidisciplinary membership to improve evidence-based perioperative care. SPAQI seeks to provide guidance on perioperative medication management that synthesizes available literature with expert consensus. The aim of this Consensus Statement is to provide practical guidance on the preoperative management of endocrine, hormonal, and urologic medications. A panel of experts with anesthesiology, perioperative medicine, hospital medicine, general internal medicine, and medical specialty experience was drawn together and identified the common medications in each of these categories. The authors then utilized a modified Delphi approach to critically review the literature and generate consensus recommendations. 相似文献