急性髓系白血病细胞系中白血病干细胞样亚群的分离和鉴定

白血病干细胞是造成白血病发生、治疗中耐药和白血病复发的根本原因,白血病干细胞的发现为提高白血病治愈率找到了明确治疗的靶标~([1]).大多数白血病干细胞处于CD34~+CD38~-CD123~+发育阶段,可以根据其表面抗原进行分离纯化~([2]).     

转基因细胞移植与生物镇痛的研究进展

慢性疼痛是目前人类尚未解决的难题之一,严重地影响了人类的生活质量,由于目前临床使用的镇痛药物存在缺陷,致使治疗效果无法令人满意 ~([1]).     

维甲酸及其受体在结直肠锯齿状病变中的表达及应用前景

结直肠癌(colorectal cancer,CRC)是我国发病率上升最快的恶性肿瘤之一.近年来国外一些大宗研究显示,在结直肠镜密切监测下,CRC发病率仍有显著增加,其原因之一可能是缺乏对锯齿状病变(一类代表CRC癌变新途径病变)的认识~([1,2]).锯齿状腺癌~([3])被认为是CRC的一个独特亚型,占所有类型CRC 的7.2%.近端CRC的17.15%,约有10%～15%的孤立性CRC来源于锯齿状病变~([2]).     

HMGB1在癫痫发病机制中的作用研究进展

正癫痫是常见的一类脑部疾病,全球大约有6000万患者,其中约有30%癫痫患者对抗癫痫药物治疗无效~([1]),发展为药物难治性癫痫,需要外科手术干预。目前,大量研究证据提示,神经系统免疫炎症反应可能与癫痫的发生发展密切相关~([2])。高迁移率族蛋白(high mobility group protein,HMG)是一种核内结构蛋白,真核细胞中含量丰富,具有修饰、弯曲、改变DNA结构的功能。HMG主要包括3个家族成员,即     

胸椎后纵韧带骨化的临床手术治疗

胸椎后纵韧带骨化(ossification of posterior longitudinal ligament of the thoracic spine,T-OPLL)是引起胸椎管狭窄的原因之一.一经发现常呈进行性发展,可导致严重脊髓压迫共至截瘫,且保守治疗无效,需选择手术治疗~([1]).     

阿司匹林促进宫颈癌HeLa细胞凋亡

阿司匹林(acetysalicylicacid,ASA)是非类固醇抗炎药(nonsteroidal antiinflammatory drugs,NSAIDs)的代表药物.最近研究证实,阿司匹林具有高效降低直肠结肠肿瘤发病率的作用~([1]);文献报道普通阿司匹林应用在半年以上,可有效降低宫颈癌的发病率~([2]).本研究对阿司匹林抑制宫颈癌HeLa细胞增殖作用及相关机制进行研究,为宫颈癌的预防与治疗提供有益的探索.     

甘肃省天水市360名留守儿童电视观看情况现状调查

留守儿童由于父母亲情的缺失,直接影响到孩子的身心发展,许多孩子在孤独、寂寞中痴迷上了电视~([1]).     

丙型肝炎的免疫学研究进展

丙型肝炎是一种由丙肝病毒引起的肝脏急慢性炎症,目前世界上约有2亿人感染丙型肝炎病毒(hepatitis C virus,HCV)~([1]),中国约有3700万～4 000万~([2]).感染者约80%发展成慢性肝炎,在慢性丙肝感染中,HCV不仅导致所感染的肝细胞凋亡,也会干扰肝脏免疫细胞的正常功能,从而免于被免疫系统所清除,同时会导致肝脏免疫病理变化,产生纤维化,最终导致肝癌~([3]).HCV感染后大约10%～15%的感染者在感染后能通过病毒特异性免疫应答清除病毒而旱自限性过程.     

Primary Reconstruction of Completely Biologic Tissue Engineered Blood Vessel and Related Basic Research

1 IntroductionIt is a usual regiment to execute surgical treatments to vascular diseases, which need much more vessels than the acquirable natural ones. This requires necessary vessel substitutes of tissue engineered blood vessels (TEBV)~([1]). It is one of the present research focuses to reconstruct TEBV with decellularised vascular scaffolds~([2, 3]).Despite the fact~([1,2]) that some of the large-diameter (>5 mm internal diameter) TEBV have been successfully developed from polymers suc…     

川芎嗪对牛磺胆酸钠诱导重症急性胰腺炎大鼠脂质过氧化的影响

重症急性胰腺炎(acute Severe pancreatitis,ASP)的临床死亡率高.氧自由基与急性胰腺炎的发病有密切关系~([1]).本研究初步研究了川芎嗪(tetramethylpyrazine,TMP)治疗ASP脂质过氧化的影响,为临床应用提供实验依据.     

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.     

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.     

THE ODYSSEY – A JUNGIAN PERSPECTIVE: INDIVIDUATION AND MEETING WITH THE ARCHETYPES OF THE COLLECTIVE UNCONSCIOUS

Homer's epic tale of the 20-year return of Odysseus from the Trojan War is investigated with particular reference to Jung's theory of individuation. Odysseus' meetings with 'the anima' in the form of goddesses, sirens and female monsters and his visit to Hades demonstrate the confrontation and humanization of aspects of the archetypal level of the psyche, central to Jung's theories of psychic growth and development. Jung's important ideas of the psychoid level and the transcendent function are explored and linked both to his investigations into medieval alchemy and with findings from contemporary neuroscience. The importance of Jung's constructive method of the interpretation of dreams and myths is shown to be central.