环状RNA-Circ＿100395作为乳腺癌的生物标记物并抑制三阴乳腺癌的发生和发展

目的 本研究通过检测Circ＿100395在乳腺癌标本中的差异性表达及其对癌细胞表型的调控作用,探索Circ＿100395在乳腺癌进展中的作用。方法 采用qRT-PCR法检测乳腺癌及癌旁组织中Circ＿100395的表达,分析Circ＿100395表达水平与乳腺癌患者临床指标的相关性。在三阴乳腺癌细胞系MDA-MB-231中过表达Circ＿100395后,采用CCK-8实验和克隆形成实验检测细胞增殖情况,Transwell小室实验检测细胞迁移情况,Western blot检测细胞上皮-间质转化相关蛋白的表达变化。结果 Circ＿100395在乳腺癌组织和细胞株中均表达下调。Circ＿100395水平与乳腺癌的肿瘤分期、肿瘤大小呈负相关。Circ＿100395在MDA-MB-231细胞中过表达降低了细胞的增殖和侵袭转移能力;促进E-钙黏蛋白（E-cadherin）表达,抑制N-钙黏蛋白（N-cadherin）和波形蛋白（Vimentin）的表达。结论 Circ＿100395在乳腺癌组织中的表达与乳腺癌的肿瘤分期、肿瘤大小呈负相关,Circ＿100395在乳腺癌中过表达可以抑制细胞增殖,侵...     

手术逆转压力负荷性左心室肥厚的实验研究

目的:探讨外科手术逆转压力负荷性左心室肥厚的有效性.方法:75只SD大鼠随机分为正常组(n=15)和肥厚组(n=60),后者行腹主动脉缩窄术造成左心室肥厚;肥厚组存活大鼠再随机分为实验组(n=26)和对照组(n=20),实验组大鼠再次手术解除腹主动脉的缩窄,术后每周取血液标本检测血管紧张素Ⅱ(angiotensinⅡ,...     

灵芝孢子保护糖尿病模型大鼠附睾及对自噬的影响

背景:糖尿病引起的高血糖与男性生殖不育密切相关,灵芝孢子长期以来被认为具有抗衰老、改善血糖水平的功能.然而灵芝孢子对糖尿病附睾的保护作用机制未见详细报道.目的:探讨灵芝孢子对糖尿病附睾的保护作用机制.方法:雄性SD大鼠随机分为正常组(n=10)、高脂高糖组(n=10)和模型组(n=20).正常组正常喂养,高脂高糖组和模...     

卵巢癌患者癌组织中nm23-H1蛋白和N-cad的表达及意义

目的:探讨卵巢癌患者癌组织中nm23-H1、神经型钙粘附蛋白(N-cadherin,N-cad)表达及其临床意义.方法:选取我院2011年1月至2013年12月间收治的118例卵巢癌患者,根据卵巢癌病理分期分为I级(n=49)、Ⅱ级(n=40)、Ⅲ级(n=29),采用免疫组化法检测癌组织及癌旁组织中nm23-H1蛋白和...     

PPAR-γ激动剂对高脂血症大鼠合并重症急性胰腺炎的作用

<正>目的:探讨过氧化物酶体增殖物激活受体-γ(PPAR-γ)激动剂罗格列酮(ROSI)对高脂血症大鼠合并重症急性胰腺炎(SAP)的保护作用及其可能机制。方法:将120只SD大鼠随机分为两个大组:普通饲料组(n=40只)、高脂饲料组(n=80只)。高脂饲料的主要成分为77%基础饲料+20%猪油+3%胆固醇。喂养两周后再随机分组:普通饲料组分为假手术组(SO组)和SAP组;高脂饲料组分为假手术组(HL组)、高脂血症合并SAP组(HAP组)、ROSI预处理组(HR组)、ROSI拮抗组(HRI组),每组各20只。     

脑外伤所致精神障碍患者的心理理论及相关因素

目的:探讨脑外伤所致精神障碍患者的心理理论功能及其相关因素。方法:以2008年在我所鉴定的脑外伤所致精神障碍患者131例为病例组,以我单位职工20名为正常对照组。根据脑损伤的部位将病例组分为额叶组(n=28)、颞叶组(n=31)、顶叶组(n=6)、枕叶组(n=6)、联合组(n=53)和脑震荡组(n=7),根据病史中昏迷指数将病例组分为轻型组(n=83)、中型组(n=28)和重型组(n=20),根据后遗精神症状将病例组分为精神病组(n=14)、神经症组(n=63)、智力缺损组(n=22)和人格改变组(n=32)。应用错误信念、解释性心理理论、失言任务来评估被试的心理理论。结果:病例组的三项心理理论任务得分及总分均低于对照组[如,总分(15.04±3.10)vs.(18.30±1.75),P0.05]。额叶组、颞叶组、联合组的心理理论任务总分均低于对照组[(14.75±3.08),(15.13±3.17),(14.72±3.37)vs.(18.30±1.75);P0.05],额叶组、颞叶组、联合组之间差异无统计学意义。轻、中、重型组患者心理理论任务总分均低于对照组[(15.45±2.80),(14.68±3.86),(13.85±2.91)vs.(18.30±1.75);P0.05],轻、中、重型组之间的差异无统计学意义。以精神病性症状、神经症样综合征、智力缺损、人格改变症状为主的患者的心理理论任务总分均低于对照组[(13.71±3.41),(16.89±1.97),(13.77±2.89)vs.(12.84±2.86);P0.05],其中精神病性症状、智力缺损、人格改变症状者总分低于神经症样综合征患者(P0.05)。多元方差分析显示,不同精神症状、精神症状与损伤部位的交互作用的差异具有统计学意义,以人格改变组、额叶损伤合并人格改变患者的得分为最低(P0.05)。结论:脑外伤所致精神障碍患者心理理论低于正常人,这种降低主要与后遗精神症状以及精神症状与损伤部位的交互作用有关。     

阿托伐他汀对不稳定心绞痛患者内皮素-1和一氧化氮的影响

目的:观察阿托伐他汀治疗不稳定型心绞痛疗效及其对内皮素-1(endothelin-1,ET-1)和一氧化氮(nitric oxide,NO)的影响.方法:将不稳定型心绞痛患者随机分为治疗组(n=45)和对照组(n=45),2组均给予同样的常规治疗,治疗组加用阿托伐他汀,均治疗2个月后观察治疗前后心绞痛疗效,检测ET-1...     

体感诱发电位评价慢性压迫性脊髓症神经功能的病理机制

目的 探讨慢性压迫性脊髓症不同体感诱发电位(somatosensory evoked potential,SEP)变化对应的病理学机制.方法 20只SD大鼠经后路手术、颈椎管内(C5～C6水平)植入吸性聚氨酯胶片,该植入体在硬膜外逐渐吸水膨胀,形成对脊髓的慢性持续压迫.术前和造模后6个月检测SEP,并对慢性压迫脊髓行Micro-CT、组织学(HE染色)和组织化学(FLB染色)检测.结果 20只造模大鼠脊髓均出现侧后方明显压迫性形态学改变,Micro-CT显示脊髓灰质和白质扭曲变形.依据SEP变化分为Ⅰ(n=6)、Ⅱa(n=5)、Ⅱb(n=4)、Ⅲ(n=5)、Ⅳ(n=0)5类.SEP异常者脊髓后索髓鞘FLB染色显著减少(SEP异常:106±27;SEP正常:121±8;P=0.036),Micro-CT显示脊髓后索对比剂密度明显增加(SEP异常:95±5;SEP正常:87±6;P=0.041),后角内神经元也明显较少[SEP异常:(21±8)/mm2;SEP正常:(29±6)/mm2;P＞0.05].病理学上,SEP-Ⅰ型表现为脊髓中央管扩大;Ⅱa型表现为灰质内出血、静脉扩张和中央管缩小;Ⅱb型表现为灰质、白质排列紊乱,血管增生;Ⅲ型表现为神经元明显减少、白质-灰质结构不清,基质海绵样变.结论 慢性压迫性脊髓症不同类型的SEP变化反映了脊髓后索和灰质神经元损伤的严重程度,SEP作为脊髓功能预后评估的判断指标具有相应的病理学特征.     

中法老人基本心理需要满足对心理幸福感的影响:文化普遍性和差异性

目的:以自我决定理论为基础,并从跨文化的视角,来探讨中法两国老人的基本心理需要满足情况,及其对心理幸福感的影响.方法:对60～85岁的退休老人(n中=464,n法=129)施测基本心理需要满足量表,心理幸福感量表,主观健康和背景信息问卷.结果:①3个基本心理需要满足(自主、能力和关系)均显著正向预测中法老人的心理幸福感...     

p38MAPK信号通路参与睡眠剥夺大鼠认知功能的损害

目的 探讨p38丝裂原活化蛋白激酶(p38MAPK)信号通路在睡眠剥夺大鼠认知障碍中的作用机制.方法 100只雄性SD大鼠随机分成对照组(n=20)、模型组(n=40)、抑制剂SB203580组(n=40).改良多平台法建立睡眠剥夺大鼠模型.睡眠剥夺1d、3d、5d、7d,电镜观察海马区神经细胞形态变化,免疫组织化学法...     

Schizophrenia in a North Swedish geographical isolate, 1900–1977. Epidemiology, genetics and biochemistry

Over 200 schizophrenic patients belonging to three major and interrelated pedigree complexes have been investigated over the past 30 years in a North Swedish geographically isolated population, presently numbering about 6,000. An intensive investigation of a number of biochemical correlates and genetic markers in a few selected families belonging to one of the major pedigrees has indicated new strategies for the current research program.
Schizophrenia, as defined operationally, is significantly associated with decreased activities of two enzymes (1) blood platelet monoamine oxidase, (2) plasma dopamine-β-hydroxylase, and (3) with the genetic marker Gc² (group specific antigen). Both enzymes are subject to genetic variation. A positive score for linkage between schizophrenia and low plasma DBH activity has been calculated, but, so far, available data are insufficient for discrimination between linkage and partial contribution of genetically controlled low plasma DBH to the pathogenesis of the disease. Alternatively, both mechanisms could be involved.
As a model for continued research, schizophrenia is explained as based on a double dominant-recessive genotype (Aabb), representing a vulnerability which in about 50 % of cases develops into clinical schizophrenia. It is suggested that the dominant mutation (A) operates on or affects MAO activity, and that the recessive genotype (bb) is instrumental in low variates of DBH activity and very likely such variates within the normal range of physiological variation. Moreover, it is suggested that the combined effects of MAO- and DBH-reduced efficiency on the metabolism of e.g. dopamine could be an essential pathogenic mechanism for the schizophrenic illness which is segregating in this population.     

Renal dysplasia and asplenia in two sibs

A family is reported in which two sibs, one male and the other female, both died within 24 hours of birth with enlarged polycystic kidneys. Postmortem histology in the second child showed gross renal dysplasia. In both children the pancreas was enlarged, nodular and cystic but the liver appeared macroscopically normal. In the second child, histological examination confirmed pancreatic fibrosis with cystic dilation of ducts, but showed portal fibrosis with bile duct proliferation in the liver.
This combination of findings is very reminiscent of those in a girl and her brother reported by Ivemark et al. (1959). The children reported here also showed absence or hypoplasia of the spleen, cardiac anomalies and other features of the Ivemark syndrome (Ivemark 1955), a quite different, usually sporadic, congenital disorder. It is suggested that the children described here have a distinct lethal congenital disorder, probably inherited in an autosomal recessive manner.     

HLA in North Colombia Chimila Amerindians

HLA-A,-B,-C,-DRB1 and -DQB1 alleles have been studied in Chimila Amerindians from Sabana de San Angel (North Colombian Coast) by using high resolution molecular typing. A frequent extended haplotype was found:HLA-A*24:02-B*51:10-C*15:02-BRB1*04:07-DQB1*03:02 (28.7%) which has also been described in Amerinndian Mayos Mexican population (Mexico, California Gulf, Pacific Ocean). Other haplotypes had already been found in Amerindians from Mexico (Pacific and Atlantic Coast), Peru (highlands and Amazon Basin), Bolivia and North USA. A geographic pattern according to HLA allele or haplotype frequencies is lacking in Amerindians, as already known. Also, five new extended haplotypes were found in Chimila Amerindians. Their HLA-A*24:02 high frequencies characteristic is shared with aboriginal populations of Taiwan; also, HLA-C*01:02 high frequencies are found in New Zealand Maoris, New Caledonians and Kimberly Aborigines from Australia. Finally, this study may show a model of evolutionary factors acting and rising one HLA allele frequency (-A*24:02), but not in others that belong to the same or different HLA loci.     

The universal muscular chamber. A basic unit of the genitourinary, cardiovascular, gastro-intestinal, skeletal, cutaneous, respiratory and other systems, endocameral hypertension; and spasm, the key to their idiopathic diseases and arthropathies

Starting with the integument, we see many organs are contractile sacs or multiples thereof, which tubes or bags constitute the major part of the entire body. Recognition of this basic unit and its characteristics sheds new light, individually and collectively, on many disorders previously considered unrelated. Muscular tears and perforations develop in the walls of these chambers, being no way peculiar to those organs, wherein, hydrochloric acid occurs. So, it is not necessary to explain the absence of excessive acid from patients who exhibit holes in the gastric, uterine, aortic, duodenal, rectal, pulmonary, retina, and other walls. Muscle, not acid is the great common factor relating idiopathic disorders in the gastrointestinal tract to each other and to similar diseases in other systems. When the units are linked together, the lesions tend to appear as arthropathies, i.e. at the joints. Rephrasing common-place observations, frees us from conventional, conceptual cul-de-sacs. An observation is only as good as its interpretation, so all possibilities must be considered, otherwise, we will remain blinded by our misconceptions.     

Der Einfluß von Nahrungsmitteln und Rauchen auf die klinisch-chemische Diagnostik von Phäochromozytom,Neuroblastom und Karzinoid-Syndrom

Zusammenfassung Der Einfluß von verschiedenen Nahrungsmitteln auf Methoden zur Bestimmung von Adrenalin (AD), Noradrenalin (NA), Vanillinmandelsäure (VMS), Metanephrinen (MN), Homovanillinsäure (HVS) und 5-Hydroxyindolessigsäure (5-HIE) im 24 h-Harn zur Diagnose des Phäochromozytoms bzw. Karzinoid-Syndroms wurde untersucht. Die in die Untersuchung einbezogenen Nahrungsmittel waren: Tee, Kaffee, Mandeln, Ananas, Käse, Walnüsse, Vanillepudding, Bananen, Tomaten und Milchschokolade. Außerdem wurde der Einfluß des Zigarettenrauchens auf die Bestimmung von AD, NA, VMS und MN untersucht.Walnüsse führten zu einer starken Erhöhung der 5-HIE-Ausscheidung. Bananen erhöhten die Ausscheidung von AD, NA, VMS, MN und 5-HIE. Kaffee und Ananas bewirkten eine geringe Zunahme der MN-Werte. Rauchen von 20–30 Zigaretten/Tag beeinflußte keine der vier Variablen.Wenn die beschriebenen Methoden benutzt werden, sollte lediglich auf den Verzehr von Bananen und Walnüssen vor und während der Harnsammelperioden verzichtet werden, da die oberen Normgrenzen im Harn überschritten werden könnten. Ein Verzicht auf Kaffee und Ananas in normalen Mengen ist nicht erforderlich. Es besteht kein Anlaß, weiterhin die bisherigen umfangreichen Restriktionen der übrigen Nahrungsmittel beizubehalten.     

A comparative study of the effects of dimebon,obsidan, finoptin,and cordaron on the functional state of ischemic focus and size of necrotic zone in experimental myocardial infarction

Dimebon, an antihistamine agent, exerts a moderate antianginal effect, improving the function of ischemic focus in the myocardium and decreasing the necrotic zone in experimental myocardial infarction. Dimebon is less active than obsidan, finoptin (except for the size of the necrotic zone), and cordaron. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 122, No. 12, pp. 642–644, December, 1996     

Effects of sex steroid hormones on lipid peroxidation and glutathione antioxidant system in rat skin

Effects of estradiol and testosterone on the intensity of lipid peroxidation and contents of glutathione redox system components in the dermis and epidermis of rat skin were studied. Only estradiol induced considerable dose-dependent and tissue-specific biphasic antioxidant effects on the skin. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 128, No. 12, pp. 663–666, December, 1999     

Adhesion and growth of CaCo2 cells on surface-modified PEEK substrata

A series of surface-functionalized poly(ether ether ketone) (PEEK) films has been prepared by selective wet-chemistry; they are hydroxylated polymer (PEEK-OH) obtained by reduction, aminated polymer (PEEK-[]-NH2) prepared by coupling a diisocyanate reagent to PEEKOH (PEEK-[]-NCO) followed by hydrolysis, and carboxylated and aminocarboxylated polymers (PEEK-[]-GABA and PEEK-Lysine) resulting from the coupling of aminoacids to PEEK-[]-NCO. The aminated and carboxylated substrata promoted the adhesion and growth of CaCo2 cells in the presence of serum. Fibronectin (FN), an extra-cellular matrix protein, has been covalently fixed and/or adsorbed on various PEEK substrata, in the presence or not of a polymeric surfactant (Pluronic F68). The performances of the FN-grafted substrata (PEEK-[]-FN(1) and PEEK-[]-FN(2)) were significantly higher than those of reference substrata simply coated with FN (PEEK-OH(+FN)(1) and (2), PEEK-[]-NH2(+FN)(1) and (2)), considering the adhesion and spreading of CaCo2 cells in the absence of serum. Moreover, the stability of the adherent cells on the FN-adsorbed substrata dramatically depended on the experimental conditions applied during the PEEK coating with FN.