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| 1 | Immunohistochemical analysis of p53,cyclinD1,RB1,c-fos and N-ras gene expression in hepatocellular carcinoma in Iran显示文摘AIM: To study the effect of some genes especially those involved in cell cycle regulation on hepatocellular carcinoma. METHODS: Paraffin-embedded tissue samples of 25 patients (18 males and 7 females) with hepatocellular carcinoma were collected from 22 pathology centers in Tehran during 2000-2001, and stained using immunohistochemistry method (avidin-biotin-peroxidase) for detection of p53, cyclinD1, RB1, c-fos and N-ras proteins. RESULTS: Six (24%), 5 (20%), 12 (48%) and 2 samples (8%) were positive for p53, cyclinD1, C-fos and N-ras expression, respectively. Twenty-two (88%) samples had alterations in the G1 cell-cycle checkpoint protein expression (RB1 or cyclinD1). P53 positive samples showed a higher (9 times) risk of being positive for RB1 protein than p53 negative samples. Loss of expression of RB1 in association with p53 over-expression was observed in 4 (66.7%) of 6 samples. Loss of expression of RB1 was seen in all cyclinD1 positive, 20 (90.9%) N-ras negative, and 11 (50%) C-fos positive samples, respectively. CyclinD1 positive samples showed a higher (2.85 and 4.75 times) risk of being positive for c-fos and N-ras expression than cyclinD1 negative samples. CONCLUSION: The expression of p53, RB1 and c-fos genes appears to have a key role in the pathogenesis of hepatocellular carcinoma in Iran. Simultaneous overexpression of these genes is significantly associated with their loss of expression during development of hepatocellular carcinoma. | SJ Moghaddam EN Haghighi S Samiee N Shahid AR Keramati S Dadgar MR Zali | 2007 | World Journal of Gastroenterology2007，13，4： | 73 |
| 2 | MicroRNA-328 is associated with (non-small) cell lung cancer (NSCLC) brain metastasis and mediates NSCLC migration显示文摘 | Arora S Ranade AR Tran NL Nasser S Sridhar S Korn RL Ross JT Dhruv H Foss KM Sibenaller Z Ryken T Gotway MB Kim S Weiss GJ | 2011 | 中国神经肿瘤杂志2011，9，1： | 30 |
| 3 | Inclusion Modification with Mg Treatment for 35CrNi3MoV Steel显示文摘The effects of Mg on the inclusion characteristics of 35CrNi3MoV steel have been studied. The results show that Mg treatment reduces obviously the amount of inclusion in the steel.Magnesiurn and oxygen in liquid steel form dispersed fine particles of MgO, to which other oxides or sulphides nucleated at heterogeneity and grown during solidification. In this way the inclusions are modified. The small spherical inclusions containing MgO have been observed in the Mg treated steel in contrast to the large angular inclusions with Al2O3 in the conventional steel. Especially the elongated MnS inclusion is replaced by small MgS·MgO or MgS. MnS·MgO complex inclusion. The formation of inclusions have been discussed. | Fu, J Yu, YG Wang, AR Chen, BP Sun, WS | 1998 | Journal of Materials Science & Technology1998，14，1： | 22 |
| 4 | WONCA研究论文摘要汇编——慢性阻塞性肺疾病对亚太地区的影响:基于亚洲人群的EPIC调查显示文摘背景慢性阻塞性肺疾病(COPD)是一种慢性、进行性呼吸减弱的临床病症,主要临床表现为不完全可逆性气流受限。在亚太地区,关于COPD患病率的研究较多,但关于COPD影响的研究较少,本研究旨在对COPD的现患病率及其对亚太地区的影响进行综合阐述。方法 2012年2月1日—5月16日,在亚太地区的9个区域进行人群调查。共有112 300个家庭接受调查,从中抽取符合本研究纳入标准(≥40岁;确诊为COPD、慢性支气管炎或肺气肿,或伴有慢性支气管炎症状)的居民69 279例,其中确诊为COPD的居民为4 289例。采用结构式调查问卷,通过面对面采访或电话随访的形式收集居民的相关资料,最终纳入患者1 841例。结果估算COPD总患病率为6.2%,其中19.1%为重症。调查前的12个月内,近一半患者(46.0%)的病情加重,其中19.0%的患者因病情加重而入院治疗。关于COPD对工作的影响,23.0%的患者表示无法工作,42.0%的患者认为该病限制了工作或活动能力。20.0%服用处方药的患者不知晓自身服用药物的名称;44.0%的患者在调查前12个月内服用过常见口服皮质类固醇处方,而吸入器的使用率(25.0%)较低。仅有37.0%的患者进行了肺功能检查,但89.0%接受检测的患者不知晓检查结果。结论亚太地区的COPD患病率较高,因患病带来的社会经济负担较大。COPD管理能力提升空间较大,患者和医生的疾病相关教育有待加强。 | Lim1 S Chi-Leung Lam D M AR | 2015 | 中国全科医学2015，18，28： | 20 |
| 5 | 桃品种特异性荧光SSR分子标记数据库构建显示文摘【目的】选择通用的荧光SSR分子标记建立桃种质资源基因型数据库便于进行种质特异性鉴定、资源交换、管理和利用。【方法】根据48个SSR标记对国内外669份桃品系的遗传多样性测试结果,从中选择出一部分多态信息含量较高、适合品种鉴别的标记,采用不同荧光标识组合在ABI3130测序仪测试,为了使不同批次的测试结果准确可靠,6—8个参照品种纳入每次的测试中。结果用16个SSR标记基本可以判断品种的特异性,它们可以用4种荧光标识进行标记,便于分为4组在ABI遗传分析仪上测试。目前数据库包含641份材料.基因型一致的品系多为同一品种突变体和自交系演化的地方品种。文中列出了100份中国代表性种质资源分子标记数据库,并建议8个中国品系为参照。对17个桃品种进行系谱验证发现,我国资源圃所育成的7个品种系谱信息正确,但日本桃品种系谱信息与文献出现偏差。【结论】应用16个多态性高的SSR荧光标记可以构建精确的桃品种分子指纹数据库,测试方法及结果对品种特异性和系谱鉴定提供重要的参考.推动资源分子指纹数据库标准化建设工作。 | 李雄伟 孟宪桥 贾惠娟 王力荣 王志强 马瑞娟 吴大军 董冰 Maria Jose Aranzana Pere Arús 高中山 | 2013 | 果树学报2013，30，6： | 17 |
| 6 | Effect of Exogenous Melatonin on Seed Germination and Seedling Growth in Melon(Cucumis melo L.) Under Salt Stress显示文摘An investigation was carried out to evaluate the effect of different application forms and concentrations of melatonin on germination and initial growth of melon plants in several different salinity conditions. We evaluated germination percentage and growth of seedlings and measured total chlorophyll content, relative electrolyte leakage, peroxidase activity, root viability, proline concentration, relative water content,Na^+/K^+ratio in green parts and K^+leakage from roots. Seed germination percentage under salt stress increased with treatments of 10 and50 μmol·L^(-1) melatonin. Seed treatment and plant watering with melatonin at 50 μmol·L^(-1) improved growth parameters and plants showed higher chlorophyll content as well as better biochemical parameters than non-treated plants. Results suggest that melatonin can alleviate the effect of salt stress during seed germination and first stages of plant development. | José Luis Casta?ares Carlos Alberto Bouzo | 2019 | Horticultural Plant Journal2019，5，2： | 15 |
| 7 | ApoB-100, ApoE and CYP7A1 gene polymorphisms in Mexican patients with cholesterol gallstone disease显示文摘AIM: To determine the possible association of the ApoB100 (Xba Ⅰ ), ApoE (Hha Ⅰ ) and CYP7A1 (Bsa Ⅰ ) gene polymorphisms, with the development of cholesterol gallstone disease (GD) in a Mexican population. METHODS: The polymorphisms were analyzed by polymerase chain reaction followed by restriction fragment length polymorphism, in two groups matched by ethnicity, age and sex: patients with GD (n = 101) and stone-free control subjects (n = 101). RESULTS: Allelic frequencies in patients and controls were: 34.16% vs 41.58% (P = 0.124) for X+of ApoB-100; 4.46% vs 5.94% (P = 0.501) for E2, 85.64% vs 78.22% (P = 0.052) for E3, 9.90% vs 15.84% (P = 0.075) for E4 of ApoE; and 25.74% vs 27.72% (P = 0.653) for C of CYP7A1. Differences in genotypic frequencies between the studied groups were not significant (P < 0.05). CONCLUSION: These results demonstrated that no association exists between the studied polymorphisms and cholelithiasis in this high prevalent population. | Sánchez-Cuén Jaime Aguilar-Medina Maribel Arámbula-Meraz Eliakym Romero-Navarro José Granados Julio Sicairos-Medina Laura Ramos-Payán Rosalío | 2010 | World Journal of Gastroenterology2010，16，37： | 14 |
| 8 | Helicobacter pylori infection as a cause of iron deficiency anaemia of unknown origin显示文摘AIM: To assess the aetiological role of Helicobacter pylori (H. pylori) infection in adult patients with ironrefractory or iron-dependent anaemia of previously unknown origin. METHODS: Consecutive patients with chronic irondeficient anaemia (IDA) with H. pylori infection and a negative standard work-up were prospectively evaluated. All of them had either iron refractoriness or iron dependency. Response to H. pylori eradication was assessed at 6 and 12 mo from follow-up. H. pylori infection was considered to be the cause of the anaemia when a complete anaemia resolution without iron supplements was observed after eradication. RESULTS: H. pylori was eradicated in 88 of the 89 patients. In the non-eradicated patient the four eradicating regimens failed. There were violations of protocol in 4 patients, for whom it was not possible to ascertain the cause of the anaemia. Thus, 84 H. pylori eradicated patients (10 men; 74 women) were available to assess the effect of eradication on IDA. H. pylori infection was considered to be the aetiology of IDA in 32 patients (38.1%; 95%CI: 28.4%-48.8%). This was more frequent in men/postmenopausal women than in premenopausal women (75% vs 23.3%; P < 0.0001) with an OR of 9.8 (95%CI: 3.3-29.6). In these patients, anaemia resolution occurred in the first follow-up visit at 6 mo, and no anaemia or iron deficiency relapse was observed after a mean follow-up of 21 ± 2 mo. CONCLUSION: Gastric H. pylori infection is a frequent cause of iron-refractory or iron-dependent anaemia of previously unknown origin in adult patients. | Helena Monzón Montserrat Forné Maria Esteve Mercé Rosinach Carme Loras Jorge C Espinós Josep M Viver Antonio Salas Fernando Fernández-Baares | 2013 | World Journal of Gastroenterology2013，19，26： | 13 |
| 9 | 功能性消化不良、胃排空延迟和生活质量下降显示文摘功能性消化不良(FD)是一种临床上最常见的综合征,表现为慢性反复性中上腹疼痛或不适,传统的诊断检测方法不能检测出病因。许多FD患者诉说症状与饮食有关,但病理生理情况不明。25%~50%的FD患者发生胃排空延迟症状,这与胃窦部动力降低有关。其他FD的异常表现包括胃底容受性限制、胃扩张过度敏感和幽门螺杆菌(H.pylori)感染。 | Talley NJ Locke Ⅲ GR Lahr B Zinsmeister AR Tougas G Ligozio G Rojavin MA Tack J.Mayo Clinic Rochester MN 陆红 | 2006 | 胃肠病学2006，11，2： | 12 |
| 10 | 用6-甲氨基嘌呤诱导贻贝四倍体胚胎显示文摘在滤过海水中以4×10(-4)mol·L(-1)6-甲氨基C嘌呤(6-DMAP)处理贻贝Mytilusedulis受精卵或胚胎,受精激活后50或120min处理20—30min,分别抑制第一或第二次有丝分裂,以诱导四倍体胚胎。顶荧光显微观察表明,6-DMAP有效地抑制了第一和第二次卵裂。它使细胞核染色质分散,抑制了原核的移动和染色体的分离,并防碍卵裂沟和极叶的形成,从而诱导出四倍体胚胎。对第一次卵裂的抑制产生82.8%的四倍体胚胎;第二次卵裂抑制产生58.6%的四倍体胚胎。由于6-DMAP如此有效,而且价格便宜以及对人体无害,与沿用的化学诱导剂细胞松弛素C.B.相比,它应该可以成为双壳类软体动物染色体操作研究的理想化学诱导剂之一。 | 蔡国雄 鲍蒙.,AR | 1996 | 热带海洋1996，15，4： | 11 |
| 11 | 人类免疫缺陷病毒阳性肺结核患者临床分析显示文摘目的 提高对人类免疫缺陷病毒 (HIV)阳性肺结核 (PTB)的认识。方法 对赤道几内亚巴塔医院 1996年 1月~ 1999年 11月确诊的 16 8例HIV阳性PTB进行分析。结果 HIV在PTB患者的感染率由 1996年的 11 4%升至 1999年的 2 2 7%。患者多急骤起病 (94 6 % ) ,以近期消瘦(82 1% )、全身关节酸痛 (78 6 % )、皮肤瘙痒 (4 2 9% )、慢性腹泻 (2 3 2 % )、浅表淋巴结肿大 (2 0 8% )及皮炎 (13 1% )为常见症状、体征 ;6 3 3%的患者X线胸片表现为非特异性改变 ;痰找抗酸杆菌阳性率为 5 8 3% ;6个月短程抗结核方案 (2SHRZ/ 4HRZ)治疗后 ,存活者临床症状、体征、实验室及X线胸片检查结果有所改善 ,病死率为 2 7 4%。结论 临床医师应加强对HIV阳性PTB诊断的警惕性 ,痰抗酸杆菌涂片及X线胸片检查仍具有较好的诊断价值 。 | 王文琦 Cram AR Micah ST Justin JN | 2000 | 中华结核和呼吸杂志2000，23，11： | 11 |
| 12 | 抗血管生成因子Angiostatin与Endostatin作用下肿瘤血管生成的二维数值模拟显示文摘目的数值模拟抗血管生成因子Angiostatin和Endostatin对肿瘤血管生成的影响。方法建立肿瘤内外血管生成的二维离散数学模型。模型耦合两种抗血管生成因子Angiostatin和Endostatin的抑制效应,数值模拟在促血管生成因子诱导下肿瘤微血管网生成,讨论血管生成抑制因子的影响。结果抗血管生成因子Angiostatin对肿瘤内外血管网络生成的速度和成熟度有抑制作用。抗血管生成因子Angiostatin和Endostatin耦合作用时,在肿瘤血管生成的早期有明显的抑制效应;在肿瘤血管生成的中后期,它们可以降低肿瘤血管化程度。结论本文模型能够较好的模拟抗血管生成因子Angiostatin和Endostatin对内皮细胞迁移和增殖的抑制作用。 | 赵改平 高昊 吴洁 许世雄 Collins MW LONG Quan Carola Koenig Padhani AR | 2006 | 医用生物力学2006，21，4： | 10 |
| 13 | 小胶质细胞再激活可缓解脑损伤后炎症反应并促进脑功能恢复显示文摘中枢神经系统疾病或损伤后,小胶质细胞介导的慢性神经炎症反应会损伤局部脑组织,加重病情,不利于神经功能的恢复。小胶质细胞的激活通过集落刺激因子1受体(CSF1R)信号通路,CSF1R抑制剂可阻断小胶质细胞的激活。抑制慢性神经炎症反应是治疗中枢神经系统疾病的有效方法,但长时间抑制小胶质细胞在临床实践中无法实现。值得注意的是,去掉CSF1R抑制剂可刺激中枢神经系统内新的小胶质细胞的彻底重激活。本课题组建立小鼠广泛性神经元丢失模型,在该模型中探讨急性小胶质细胞的消除及再激活的作用。神经元的丢失导致了较长时间的神经炎性反应,表现为小胶质细胞肿胀,并表达CD68和CD45;同时,细胞因子、趋化因子、补体及其他炎症信号的表达增加。小胶质细胞的再激活可以缓解上述炎症反应,还可以促进小鼠神经功能的恢复,即使该小鼠的海马神经元丢失80%,其在水迷宫测试中的得分与正常小鼠的得分相差无几。对突触的分析结果显示,小胶质细胞的再激活可增加PSD95和突触泡蛋白点状突触体的表达,提示小胶质细胞有助于重塑和调节突触的形态和功能。综上所述,本研究结果显示,小胶质细胞的短时间消除及再激活可能是一种新颖有效的方法用于减少神经炎性反应并促进脑功能恢复。 | Rice RA Pham J Lee RJ Najafi AR West BL Green KN 唐颖馨(编译) | 2017 | 神经损伤与功能重建2017，12，3： | 9 |
| 14 | Glutamate reduces experimental intestinal hyperpermeability and facilitates glutamine support of gut integrity显示文摘AIM:To assess whether glutamate plays a similar role to glutamine in preserving gut wall integrity.METHODS:The effects of glutamine and glutamate on induced hyperpermeability in intestinal cell lines were studied.Paracellular hyperpermeability was induced in Caco2.BBE and HT-29CL.19A cell lines by adding phorbol-12,13-dibutyrate(PDB) apically,after which the effects of glutamine and glutamate on horseradish peroxidase(HRP) diffusion were studied.An inhibitor of glutamate transport(L-trans-pyrrolidine-2,4-dicarboxylic acid:trans-PDC) and an irreversible blocker(acivicin) of the extracellular glutamine to glutamate converting enzyme,γ-glutamyltransferase,were used.RESULTS:Apical to basolateral HRP flux increased significantly compared to controls not exposed to PDB (n=30,P<0.001).Glutamine application reduced hyperpermeability by 19%and 39%in the respective cell lines.Glutamate application reduced hyperpermeability by 30%and 20%,respectively.Incubation of HT29CL.19A cells with acivicin and subsequent PDB and glutamine addition increased permeability levels.Incubation of Caco2.BBE cells with trans-PDC followed by PDB and glutamate addition also resulted in high permeability levels.CONCLUSION:Apical glutamate-similar to glutaminecan decrease induced paracellular hyperpermeability.Extracellular conversion of glutamine to glutamate and subsequent uptake of glutamate could be a pivotal step in the mechanism underlying the protective effect of glutamine. | Mechteld AR Vermeulen Jeffrey de Jong Mathijs J Vaessen Paul AM van Leeuwen Alexander PJ Houdijk | 2011 | World Journal of Gastroenterology2011，17，12： | 9 |
| 15 | Association of CagA and VacA presence with ulcer and non-ulcer dyspepsia in a Turkish population显示文摘AIM: The mostly known genotypic virulence features, of H. pyloriare cytotoxin associated gene A (ragA) and Vacuolating cytotoxin gene A (VacA). We investigated the association of these major virulence factors with ulcer and non-ulcer dyspepsia in our region.METHODS: One hundred and forty two dyspeptic patients were studied (average age 44.8±15.9 years, range 15-87years, 64 males and 78 females). Antral and corpus biopsies were taken for detecting and genotyping of H. pylori. 107patients who were H. pylori positive by histological assessment were divided into three groups according to endoscopic findings: Duodenal ulcer (DU), gastric ulcer (GU)and non-ulcer dyspepsia (NUD). The polymerase chain reaction (PCR) was used to detect CagA and VacA genes of H.pylori using specific primers.RESULTS: H.pyloriwas isolated from 75.4 % (107/142) of the patients. Of the 107 patients, 66 (61.7 %) were cagApositive and 82 (76.6 %) were Vacl-positive. CagA gene was positively associated with DU and GU (P<0.01, P<0.02),but not with NUD (P>0.05). Although VacA positivity in ulcer patients was higher than that in NUD group, the difference was not statistically significant (P>0.05).CONCLUSION: There is a significantly positive association between CagA genes and DU and GU. The presence of VacA is not a predictive marker for DU, GU, and NUD in our patients. | Kantarceken Bulent Aladag Murat Atik Esin Koksal Fatih Harputluoglu MMMurat Harputluoglu Hakan Karincaoglu Melih Ares Mehmet Yildirim Bulent Hilmioglu Fatih | 2003 | World Journal of Gastroenterology2003，9，7： | 8 |
| 16 | 膳食中钠(盐)与血压的关系及其他膳食因素可能的调节作用显示文摘现有资料表明,膳食钠(盐)与血压直接相关。以往大多数研究结果来自缺乏膳食数据的研究;因此,这种钠-血压关系是否受其他膳食因素调节尚不清楚。国际宏量/微量营养素和血压研究(international study on macro/micronutrients and blood pressure,INTERMAP)结果显示,在控制多种非膳食因素情况下,年龄40~59岁的男性和女性4680人(中国、日本、英国和美国的17个人口样本)的血压与24h尿钠排泄和尿钠/钾直接相关。 | 刘莉 叶鹏 Stamler J Chan Q Daviglus ML Dyer AR Van Horn L Garside DB Miura K Wu Y Ueshima H Zhao L Elliott P INTERMAP Research Group | 2018 | 中华高血压杂志2018，26，4： | 8 |
| 17 | Prunus genetics and applications after de novo genome sequencing:achievements and prospects显示文摘Prior to the availability of whole-genome sequences,our understanding of the structural and functional aspects of Prunus tree genomes was limited mostly to molecular genetic mapping of important traits and development of EST resources.With public release of the peach genome and others that followed,significant advances in our knowledge of Prunus genomes and the genetic underpinnings of important traits ensued.In this review,we highlight key achievements in Prunus genetics and breeding driven by the availability of these whole-genome sequences.Within the structural and evolutionary contexts,we summarize:(1)the current status of Prunus whole-genome sequences;(2)preliminary and ongoing work on the sequence structure and diversity of the genomes;(3)the analyses of Prunus genome evolution driven by natural and man-made selection;and(4)provide insight into haploblocking genomes as a means to define genome-scale patterns of evolution that can be leveraged for trait selection in pedigree-based Prunus tree breeding programs worldwide.Functionally,we summarize recent and ongoing work that leverages whole-genome sequences to identify and characterize genes controlling 22 agronomically important Prunus traits.These include phenology,fruit quality,allergens,disease resistance,tree architecture,and self-incompatibility.Translationally,we explore the application of sequence-based marker-assisted breeding technologies and other sequence-guided biotechnological approaches for Prunus crop improvement.Finally,we present the current status of publically available Prunus genomics and genetics data housed mainly in the Genome Database for Rosaceae(GDR)and its updated functionalities for future bioinformatics-based Prunus genetics and genomics inquiry. | Maria JoséAranzana Véronique Decroocq Elisabeth Dirlewanger Iban Eduardo Zhong Shan Gao Ksenija Gasic Amy Iezzoni Sook Jung Cameron Peace Humberto Prieto Ryutaro Tao Ignazio Verde Albert G.Abbott Pere Arús | 2019 | Horticulture Research2019，6，1： | 8 |
| 18 | 急性脊髓损伤患者治疗的临床操作指南:关于MRI基线在临床治疗决策与结果预测中作用的几点建议(英文)显示文摘The objective of this guideline is to outline the role of magnetic resonance imaging(MRI) in clinical decision making and outcome prediction in patients with traumatic spinal cord injury(SCI).Methods A systematic review of the literature was conducted to address key questions related to the use of MRI in patients with traumatic SCI.This review focused on longitudinal studies that controlled for baseline neurologic status.A multidisciplinary Guideline Development Group(GDG) used this information,their clinical expertise,and patient input to develop recommendations on the use of MRI for SCI patients.Based on GRADE(Grading of Recommendation,Assessment,Development and Evaluation),a strong recommendation is worded as ' we recommend,' whereas a weaker recommendation is indicated by 'we suggest.' Results Based on the limited available evidence and the clinical expertise of the GDG,our recommendations were:(1) 'We suggest that MRI be performed in adult patients with acute SCI prior to surgical intervention,when feasible,to facilitate improved clinical decision-making'(quality of evidence,very low) and(2) 'We suggest that MRI should be performed in adult patients in the acute period following SCI,before or after surgical intervention,to improve prediction of neurologic outcome '(quality of evidence,low).Conclusions These guidelines should be implemented into clinical practice to improve outcomes and prognostication for patients with SCI. | Fehlings MG Martin AR Tetreault LA Aarabi B Anderson P Arnold PM Brodke D Burns AS Chiba K Dettori JR Furlan JC Hawryluk G Holly LT Howley S Jeji T Kalsi-Ryan S Kotter M Kurpad S Kwon BK Marino RJ Massicotte E Merli G Middleton JW Nakashima H Nagoshi N Palmieri K Singh A Skelly AC Tsai EC Vaccaro A Wilson JR Yee A Harrop JS | 2017 | 中华神经外科疾病研究杂志2017，16，6： | 8 |
| 19 | 血液采集和单采期间不良反应的发生率:一项单中心研究显示文摘通常认为异体血液采集的献血者发生不良反应和损伤的发生率低,但自体献血者不良反应发生率的数据则自相矛盾,单采不良反应的发生率和预测献血者反应的因素还知之甚少.
本文分析了作者输血中心1998年1月到2001年6月记录的血液和单采献血者的所有不良反应.作者对发生不良反应与未报告任何不良反应的献血者之间的人口统计学和身体特征进行比较,以便确定不良反应预测因素的存在. | Franchini M Gandini G Gandini AR 洪缨 | 2004 | 国外医学(输血及血液学分册)2004，27，4： | 7 |
| 20 | Growth factor-and cytokine-driven pathways governing liver stemness and differentiation显示文摘Liver is unique in its capacity to regenerate in response to injury or tissue loss. Hepatocytes and other liver cells are able to proliferate and repopulate the liver. However, when this response is impaired, the contribution of hepatic progenitors becomes very relevant. Here, we present an update of recent studies on growth factors and cytokine-driven intracellular pathways that govern liver stem/pro-genitor cell expansion and differentiation, and the rel-evance of these signals in liver development, regeneration and carcinogenesis. Tyrosine kinase receptor signaling, in particular, c-Met, epidermal growth factor receptors or fibroblast growth factor receptors, contribute to prolifera-tion, survival and differentiation of liver stem/progenitor cells. Different evidence suggests a dual role for the trans-forming growth factor (TGF)-β signaling pathway in liver stemness and differentiation. On the one hand, TGF-βmediates progression of differentiation from a progenitor stage, but on the other hand, it contributes to the expan-sion of liver stem cells. Hedgehog family ligands are nec-essary to promote hepatoblast proliferation but need to be shut off to permit subsequent hepatoblast differentiation. In the same line, the Wnt family and β-catenin/T-cell fac-tor pathway is clearly involved in the maintenance of liver stemness phenotype, and its repression is necessary for liver differentiation during development. Collectively, data indicate that liver stem/progenitor cells follow their own rules and regulations. The same signals that are essential for their activation, expansion and differentiation are good candidates to contribute, under adequate conditions, to the paradigm of transformation from a pro-regenerative to a pro-tumorigenic role. From a clinical perspective, this is a fundamental issue for liver stem/progenitor cell-based therapies. | Aránzazu Sánchez Isabel Fabregat | 2010 | World Journal of Gastroenterology2010，16，41： | 7 |
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