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Immune and Hematological Reconstitution after Allogenic Bone Marrow Transplantation in Tunisian Pediatric Recipients: Prospective Study and Tunisian Experience Report 突尼斯儿童同种异体骨髓移植后的免疫和血液学重建:前瞻性研究和突尼斯经验报告
Pub Date : 2017-02-27 DOI: 10.12974/2312-5411.2017.04.4
F. Jenhani, Z. Regaya, L. Berraies, F. Mellouli
AIM: A regular monitoring of the immune reconstitution mainly based on the quantitative determination of lymphocyte T subpopulation. This is prospective analysis for 1 year in Tunisian children treated with allogenic intrafamilial bone marrow transplantation.Methods: We conducted a prospective analysis for 1 year follow up enrolling 25 children treated with allogenic intrafamilial bone marrow transplantation among them two cases of Peripheral hematopoietic transplantation and placental cord blood transplantation including: aplastic anemia (6 cases), hemoglobinopathies (12 cases), myelodysplastic syndrome (1 case), 2 cases of Acute lymphocytic leukemia, a case of congenital amegacarycytosis and 3 cases of primary immunodeficiency with lack of expression of major MHC class II. All subjects received different conditioning regimens according to the indication. Our study consisted of a regular monitoring of the immune reconstitution mainly based on the quantitative determination of lymphocyte T subpopulation. So, these tests were routinely requested to 1 month, 2 months, 3 months, 6 months, 9 months and 12 months post- bone marrow transplantation.Results: The average time of engraftment was 18 days corresponding to neutrophil recovery (12-24). For the T cell recovery, a rate of CD4 + T lymphocytes > 200/ mm3 was provided within an average of 2.5 months (1-7). The average time to obtain CD8+ T lymphocytes >200 /mm3 was 2 months (1-5). The humoral immune reconstitution was made within an average of 2 months (1-4). A ratio of CD4+ / CD8+ T lymphocytes (>1) was obtained within 10 months and a half (1-24). Univaried analysis showed a significant correlation between the bone marrow sex matched and the faster reorganization of CD8 + T cells (p = 0.042). Moreover, a quantity of CD34 +> 6x 106/ kg was significantly associated with the recapture of a formula lymphocyte T CD4+ / CD8+ (> 1) (p=0.03).Conclusion: The immune recovery post bone marrow transplantation in children began with myeloid lineage then lymphoid B then lymphoid T. The inversion of the ratio CD4 +/CD8+ T lymphocytes, seemed to be influenced on the one hand by the high content of CD34 + cells in the graft as well as the type of conditioning on the other hand by the CMV infection since it accelerates significantly CD8+ T lymphocyte reconstitution. 
目的:以淋巴细胞T亚群的定量测定为基础,对免疫重建进行定期监测。这是突尼斯儿童接受同种异体家族内骨髓移植治疗1年的前瞻性分析。方法:我们对25例接受同种异体家族内骨髓移植治疗的儿童进行了1年的前瞻性分析,其中2例为外周造血移植和胎盘脐血移植,包括:再生障碍性贫血(6例)、血红蛋白病(12例)、骨髓增生异常综合征(1例),2例急性淋巴细胞白血病,1例先天性阿米巴细胞增多症,3例原发性免疫缺陷,主要MHC II类缺乏表达。所有受试者根据适应症接受不同的调理方案。我们的研究包括定期监测免疫重建,主要基于淋巴细胞T亚群的定量测定。因此,这些测试通常要求在骨髓移植后1个月、2个月、3个月、6个月、9个月和12个月进行。结果:平均植入时间为18天,相当于中性粒细胞的恢复时间(12-24)。对于T细胞的恢复,CD4+T淋巴细胞的比率>200/mm3在平均2.5个月内提供(1-7)。获得CD8+T淋巴细胞>200/mm3的平均时间为2个月(1-5)。体液免疫重建平均在2个月内完成(1-4)。CD4+/CD8+T淋巴细胞的比率在10个半月(1-24)内获得(>1)。单因素分析显示骨髓性别匹配与CD8+T细胞快速重组之间存在显著相关性(p=0.042),CD34+>6x106/kg与配方淋巴细胞T CD4+/CD8+(>1)的再捕获显著相关(p=0.03),似乎一方面受到移植物中高含量CD34+细胞的影响,另一方面受到CMV感染的调理类型的影响。
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引用次数: 0
Growth Factors in the Platelet-Rich Plasma 富血小板血浆中的生长因子
Pub Date : 2017-02-27 DOI: 10.12974/2312-5411.2017.04.2
Maczy González, M. Arteaga-Vizcaíno, Ana Ruiz, Jesús Estévez, Jesus Quintero, M. Quintero, O. Briceño, R. Atencio, Ivis Marcano
PRP is an useful bioproduct to tisular regeneration. The aim of study was evaluate the concentration of growth factors: PDGFBB (platelet-derived growth factor), EGF(epidermal growth factor) and VEGF (vascular endothelial growth factor) present in the Platelet-rich plasma (PRP) in subjects treated with drugs which inhibit platelet aggregation as acetylsalicylic acid (ASA) and clopidogrel before and after administration. We determined by ELISA PDGFBB, EGF and VEGF levels in PRP, Platelet Poor Plasma (PPP), lysate and exudate from 32 healthy subjects before and 24 hours after ingesting acid Acetyl salicylic acid (ASA) and clopidogrel as a single dose. The PRP and PPP were obtained by the method of Anitua by single centrifugation method. To analyze the results of student test and Pearson correlation was applied, with statistical significance level of p < 0.05. PPP and exudate (Clopidogrel: p < 0.001), PRP (Clopidogrel: p < 0.01) statistically significant differences for PDGFBB in PPP (p < 0.01 AAS) were found, and for VEGF in lysate (ASA and Clopidogrel: p < 0.05). No significant difference was found for EGF. Only was no correlation between baseline values of EGF in the ASA group and the respective PRP platelet count (r = 0.726). The results show that the average basal values of the three growth factors measured were considered particularly high in the PRP and lysate, showing the significant decrease for PDGFBB after antiplatelet therapy, especially of Clopidogrel and a significant increase for the VEGF only for the lysate. Although the behavior of three different soluble mediators was different to antiplatelet agents, the observed changes support the conclusion that a single dose of these drugs not markedly affect the secretion and availability of the three growth factors measured in various platelet derived obtained. 
PRP是一种有益于组织再生的生物制品。本研究的目的是评估服用乙酰水杨酸(ASA)和氯吡格雷等抑制血小板聚集药物的受试者在给药前后富含血小板的血浆(PRP)中存在的生长因子:PDGFBB(血小板衍生生长因子)、EGF(表皮生长因子)和VEGF(血管内皮生长因子)的浓度。我们通过ELISA法测定了32名健康受试者在单次摄入酸性乙酰水杨酸(ASA)和氯吡格雷前和24小时后PRP、贫血小板血浆(PPP)、裂解物和渗出物中PDGFBB、EGF和VEGF的水平。PRP和PPP是通过Anitua的方法通过单次离心法获得的。对学生测试结果进行分析,采用Pearson相关分析,统计显著性水平为p<0.05。PPP和渗出液(氯吡格雷:p<0.001)、PRP(氯吡格雷:p<0.01)在PPP中的PDGFBB(p<0.01 AAS)和裂解物中的VEGF(ASA和氯吡格雷:p<0.05)存在统计学显著差异。EGF没有发现显著差异。ASA组的EGF基线值与各自的PRP血小板计数之间没有相关性(r=0.726)。结果表明,在PRP和裂解物中,测量的三种生长因子的平均基线值被认为特别高,显示抗血小板治疗后PDGFBB显著降低,尤其是氯吡格雷,并且仅裂解物的VEGF显著增加。尽管三种不同可溶性介质的行为与抗血小板药物不同,但观察到的变化支持这样一个结论,即单剂量的这些药物不会显著影响在获得的各种血小板衍生的中测量的三种生长因子的分泌和可用性。
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引用次数: 0
Resistance Studies, in vitro Model, of Myeloid Leukemia Cell Lines HL-60 Against Thymoquinone and Doxorubicin in the Presence of Type I Collagena 髓系白血病HL-60细胞在I型胶原存在下对百里醌和阿霉素的体外耐药性研究
Pub Date : 2017-02-27 DOI: 10.12974/2312-5411.2017.04.1
Rabeb M. Ghali, Sana Mahjoub, W. Bahia, Vera Chaieb, B. Achour, Faouzi Janhani, T. Mahjoub
Purpose: The prognostic of Acute leukemia is cell drug resistance dependent, which is principal cause of death. The bone marrow microenvironment is directly implicated as source of chemio resistance. Several researchers have studied in vivo and vitro the effect of the bioactive molecules such as the Thymoquinone (TQ) on cancers chemo resistant. The aim of this study is to compare the activities of Thymoquinone to Doxorubicin on presence and on absence of collagen type I, which is the major component of cell extra matrix (CEM).Methods: Cell line HL60 resistance against Doxorubicin and Thymoquinone was tested on presence and on absence Type I collagen at concentration 25, 50 and 100 µg /cm2 TQ and Dox cytototoxicities was evaluated with counting using KOVA Glasstic Slide and phase contrast microscopy. HL-60 cells were seeded at 10 cells/well for 24h in the presence or not of collagen and treated or not with 200nM of Dox or 10 µM of TQ. After incubation, apoptosis was determined using Annex V and Dead Cell Assay kit (Millipore) and Caspase 3/7 Assay kit (Millipore).Results: cell line HL60 proliferation is more resistance against Doxorubicin in presence Type I collagen than Thymoquinone.Conclusion: Collagen induce cell HL60 resistance against Doxorubicin, But not against Thymoquinone. Combination Thymoquinone, bioactive molecule, to Doxorubicin can decrease the drug resistance and improve leukemia prognostic. 
目的:急性白血病的预后依赖于细胞耐药,这是主要的死亡原因。骨髓微环境是化疗耐药的直接来源。一些研究人员在体内和体外研究了生物活性分子如百里醌(TQ)对癌症化疗耐药的影响。本研究的目的是比较百里醌和阿霉素在细胞外基质(CEM)的主要成分I型胶原蛋白存在和不存在时的活性。方法:采用KOVA玻片法和相衬显微镜计数法检测I型胶原在25、50和100µg /cm2 TQ浓度下对细胞株HL60对阿霉素和百里醌的耐药性。将HL-60细胞以10个/孔的速度接种24小时,分别用200nM的Dox或10µM的TQ处理。孵育后,使用附件V和死亡细胞检测试剂盒(Millipore)和Caspase 3/7检测试剂盒(Millipore)检测细胞凋亡。结果:在ⅰ型胶原存在的情况下,HL60细胞增殖对阿霉素的抗性大于对百里醌的抗性。结论:胶原诱导细胞HL60对阿霉素耐药,而对百里醌不耐药。生物活性分子百里醌与阿霉素联用可降低耐药,改善白血病预后。
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引用次数: 0
Interpretation of Platelets in The Horse 《马》中血小板的解读
Pub Date : 2017-02-27 DOI: 10.12974/2312-5411.2017.04.3
K. Satué, J. C. Gardón, Á. Muñoz
Currently we can consider that, in addition to its role in hemostasis, platelets also participate in other important processes such as thrombosis, inflammation, tissue remodeling and the innate defense mechanisms. The hemostatic activity of platelets includes different events to stop bleeding. Within these functions we can mention the adhesion to the endothelium of the affected blood vessel, the activation, the aggregation, and the release of substances that initiate hemostatic events, and also the providing a phospholipid surface for activation of numerous coagulation factors. Similarly, platelets release multiple growth factors responsible for regulating the growth and division of endothelial cells and fibroblasts. In this way, among other things, angiogenesis and tissue regeneration are favored. Platelets also participate in inflammatory processes by the release of factors that initiate the inflammatory cascade and favor the chemotaxis of neutrophils, monocytes, macrophages, acute phase proteins and target cell signaling. Finally, platelets participate in the immune response by interacting with the complement system and immunoglobulins. 
目前我们可以认为,血小板除了止血作用外,还参与其他重要过程,如血栓形成、炎症、组织重塑和先天防御机制。血小板的止血活性包括不同的止血事件。在这些功能中,我们可以提到与受影响血管内皮的粘附,启动止血事件的物质的激活,聚集和释放,以及为许多凝血因子的激活提供磷脂表面。同样,血小板释放多种生长因子,负责调节内皮细胞和成纤维细胞的生长和分裂。通过这种方式,除其他外,血管生成和组织再生受到青睐。血小板还通过释放启动炎症级联的因子参与炎症过程,并有利于中性粒细胞、单核细胞、巨噬细胞、急性期蛋白和靶细胞信号的趋化。最后,血小板通过与补体系统和免疫球蛋白的相互作用参与免疫反应。
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引用次数: 12
A Case of Ischemic Stroke in a Patient with Middle Cerebral Artery Stenosis and Iron Deficiency Anemia 脑中动脉狭窄合并缺铁性贫血缺血性脑卒中1例
Pub Date : 2016-06-15 DOI: 10.12974/2312-5411.2016.03.01.2
T. Parvu, C. Coclitu, O. Rusu, A. Ciobotaru, A. Mergeani, O. Bajenaru, F. Antochi
Recent studies showed that iron deficiency anemia was correlated with ischemic stroke in patients with carotid artery stenosis. It was also identified as the culprit of ischemic stroke in patients without any acknowledged risk factors for stroke. We presented a clinical case that highlights the importance of the management of anemia as etiologic factor of ischemic stroke, both as primary and secondary prevention. 
近期研究表明,颈动脉狭窄患者缺铁性贫血与缺血性脑卒中相关。在没有任何已知中风危险因素的患者中,它也被认为是缺血性中风的罪魁祸首。我们提出了一个临床病例,强调贫血作为缺血性卒中的病因管理的重要性,作为一级和二级预防。
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引用次数: 0
Is Alpha-Fetoprotein a New Biomarker for Fetal, Infant and Juvenile Anemia? A Commentary 甲胎蛋白是胎儿、婴儿和青少年贫血的新生物标志物吗?一篇评论
Pub Date : 2016-06-15 DOI: 10.12974/2312-5411.2016.03.01.3
G. Mizejewski
Alpha-fetoprotein (AFP) is well known as a biomarker for certain cancers and fetal birth defects. However, AFP has long been overlooked as an indicator for the presence of anemia in various diseases of fetal, neonatal, and juvenile individuals. A survey and meta-analysis of the biomedical literature revealed that elevated levels of serum AFP may serve as a viable biomarker of moderate to severe anemia at various stages of ontogeny. Such conditions of anemia could include bone marrow failure, pancytopenia, macrocytosis, microcytosis, and aplastic anemia. Since many congenital diseases that result in anemia are progressive and lethal, the need for a biomarker that could predict and parallel the advancing anemic state in disease would be of utmost importance to the biomedical community. 
甲胎蛋白(AFP)被认为是某些癌症和胎儿出生缺陷的生物标志物。然而,AFP作为胎儿、新生儿和青少年各种疾病中存在贫血的指标,长期以来一直被忽视。一项对生物医学文献的调查和荟萃分析显示,血清AFP水平升高可作为个体发育不同阶段中度至重度贫血的可行生物标志物。这类贫血包括骨髓衰竭、全血细胞减少症、巨细胞增多症、小细胞增多症和再生障碍性贫血。由于许多导致贫血的先天性疾病是进行性和致命性的,因此对一种能够预测和平行疾病进展中的贫血状态的生物标志物的需求对生物医学界至关重要。
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引用次数: 1
Adult T-Cell Leukemia and Retinoid 成人t细胞白血病和类维甲酸
Pub Date : 2016-06-15 DOI: 10.12974/2312-5411.2016.03.01.1
Y. Maeda, A. Okamoto, Shin-ichiro Kawaguchi, A. Konishi, Kenta Yamamoto, G. Eguchi, Terufumi Yamaguchi
Adult T-cell leukemia/lymphoma (ATL/ATLL) is an aggressive lymphoid disease caused by human T-cell leukemia virus type 1 (HTLV-1). It is reported that retinoid suppressed the proliferation of malignant cells including ATL cells. In this study, we showed the mechanism of retinoid action for ATL cells. We observed that NF-kB transcriptional activity as well as cell proliferation decreased in HTLV-1-positive T-cell lines by treatment with retinoid. Further, we observed that retinoid reduced HTLV-1 proviral DNA. Interestingly, retinoid significantly inhibited reverse transcriptase (RT) activity similar to azidothimidine (AZT) on HTLV-1-positive T-cell lines. Therefore, AZT was inhibitory of proviral DNA load but not NF-kB transcriptional activity on HTLV-I, however retinoid was inhibitory of both NF-?B and proviral DNA on HTLV-1. Furthermore, we showed cellular senescence in HTLV-I positive T-cell lines and in primary ATL cells obtained from acute ATL patients. The number of senescent cells significantly increased in the HTLV-I positive T-cell lines after treatment with retinoid, but not in the HTLV-I negative ones. These results indicated that retinoid could have three roles, as a NF-?B inhibitor, as a RT inhibitor and as a facilitating cellular senescence. 
成人t细胞白血病/淋巴瘤(ATL/ATLL)是由人类t细胞白血病病毒1型(HTLV-1)引起的侵袭性淋巴系统疾病。据报道,类维甲酸抑制包括ATL细胞在内的恶性细胞的增殖。在本研究中,我们揭示了类维甲酸对ATL细胞的作用机制。我们观察到,在htlv -1阳性t细胞系中,类维甲酸处理后NF-kB转录活性和细胞增殖均下降。此外,我们观察到类维甲酸降低了HTLV-1前病毒DNA。有趣的是,类维甲酸显著抑制htlv -1阳性t细胞株上的逆转录酶(RT)活性,类似于azidothimidine (AZT)。因此,AZT对HTLV-I的前病毒DNA载量有抑制作用,但对NF- kb转录活性没有抑制作用,而类维a酸对NF-?HTLV-1上的B和原病毒DNA。此外,我们发现HTLV-I阳性t细胞系和急性ATL患者的原代ATL细胞都出现了细胞衰老。类维甲酸处理后,HTLV-I阳性t细胞株衰老细胞数量显著增加,而HTLV-I阴性t细胞株衰老细胞数量无显著增加。这些结果表明,类维甲酸可能具有三种作用,如NF-?B抑制剂,作为RT抑制剂和促进细胞衰老。
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引用次数: 0
Young Adult Perspectives on a Successful Transition from Pediatric to Adult Care in Sickle Cell Disease. 年轻人对镰状细胞病从儿科到成人护理成功过渡的看法。
Pub Date : 2015-12-01 DOI: 10.12974/2312-5411.2015.02.01.3
Amy E Sobota, Emeka Umeh, Jennifer W Mack

Objective: This qualitative study sought to learn from young adults with sickle cell disease (SCD) about their experience leaving pediatric care and perspective on what makes a successful transition.

Methods: Fifteen young adults with SCD who had left pediatric care within the previous five years participated in focus groups led by a trained moderator. Transcripts were analyzed using grounded theory.

Results: Four main themes emerged from the analysis: facilitators of transition (meeting the adult provider prior to transfer, knowing what to expect, gradually taking over disease self-management and starting the process early), barriers to transition (negative perceived attitude of adult staff, lack of SCD specific knowledge by both patients and staff, and competing priorities interfering with transition preparation), what young adults wished for in a transition program (opportunities to meet more staff prior to transfer, more information about the differences between pediatric and adult care, learning from a peer who has been through the process, more SCD teaching, and flexibility in transition preparation) and how they define a successful transition (gradually assuming responsibility for self-management of their SCD).

Conclusion: Our findings present unique opportunities to learn from young adults with SCD about ways to improve current transition programs.

目的:本定性研究旨在从患有镰状细胞病(SCD)的年轻成人中了解他们离开儿科护理的经历和成功过渡的观点。方法:15名在过去五年内离开儿科护理的SCD年轻成人参加了由训练有素的主持人领导的焦点小组。使用扎根理论分析转录本。结果:从分析中得出四个主要主题:过渡的促进因素(在转院前与成人提供者会面,知道会发生什么,逐渐接管疾病自我管理并尽早开始这一过程),过渡的障碍(成人工作人员的消极态度,患者和工作人员缺乏SCD的具体知识,以及相互竞争的优先事项干扰转院准备),年轻人希望在过渡项目中得到什么(转院前与更多工作人员会面的机会;更多关于儿科和成人护理之间差异的信息,向经历过这一过程的同伴学习,更多的SCD教学,以及过渡准备的灵活性),以及他们如何定义成功的过渡(逐渐承担起SCD自我管理的责任)。结论:我们的研究结果提供了独特的机会,可以向患有SCD的年轻人学习如何改善当前的过渡方案。
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引用次数: 32
期刊
Journal of hematology research
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