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The synergistic effect of 2-deoxy-D-glucose and cytarabine on mitochondria of stem-like cells derived from KG1-a 2-脱氧-d -葡萄糖和阿糖胞苷对KG1-a源性干细胞线粒体的协同作用
IF 0.9 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100537
Sona Rezaei , Mohammad Mohammadzadeh-Vardin , Keyvan Amirshahrokhi , Mojtaba Amani
Acute myeloid leukemia (AML) often relapses post-chemotherapy due to leukemia stem cells (LSCs), which rely on mitochondria for energy, ROS regulation, and apoptosis. Targeting mitochondrial pathways may overcome LSC resistance. This study evaluated Cytarabine (Ara-C), 2-Deoxy-d-Glucose (2-DG), and their combination on AML-derived KG1-a cells using MTT assays, showing reduced viability with combined treatment. The Magnetic sorting isolated CD34+ (stem-like) and CD34- cells. Flow cytometry revealed increased ROS and decreased mitochondrial membrane potential (MMP) in KG1-a and CD34+ cells with 2-DG and Ara-C, suggesting a promising strategy to target resistant LSCs in AML therapy.
急性髓性白血病(AML)化疗后经常复发,这是由于白血病干细胞(LSCs)依赖线粒体提供能量、ROS调节和细胞凋亡。靶向线粒体途径可能克服LSC抗性。本研究利用MTT法评估了阿糖胞苷(Ara-C)、2-脱氧-d-葡萄糖(2-DG)及其联合治疗对aml衍生的KG1-a细胞的影响,结果显示联合治疗降低了KG1-a细胞的存活率。磁分选分离CD34+(干样)和CD34-细胞。流式细胞术显示,含2-DG和Ara-C的KG1-a和CD34+细胞中ROS增加,线粒体膜电位(MMP)降低,提示靶向耐药LSCs治疗AML的有希望的策略。
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引用次数: 0
Rapid development of Philadelphia chromosome-negative AML in a CML patient with sustained major molecular response to tyrosine kinase inhibitor therapy 在对酪氨酸激酶抑制剂治疗持续主要分子反应的CML患者中,费城染色体阴性AML的快速发展
IF 0.9 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100536
Huan Liu , Yunxia Sun , Liangliang Li , Yurong Zhang , Yaxiong Zhou , Pengyun Zeng , Lingling Yue
The use of TKIs has significantly improved the prognosis of CML. However, a small subset of patients still experience poor outcomes. We present a rare case of Ph-AML following a diagnosis of CML. The patient achieved CCyR and MMR after 4 months of nilotinib therapy, with sustained deep remission for 3 years. Unexpectedly, the disease developed rapidly to AML. Further investigations revealed the emergence of CCA/Ph- and gene mutations. We retrospectively analyzed previous CML patients with BCR::ABL1 and Ph-negative status in blast crisis from our database and conducted a comprehensive review of the relevant literature.
TKIs的使用显著改善了CML的预后。然而,一小部分患者的预后仍然很差。我们提出一个罕见的病例Ph-AML后诊断为CML。患者在尼罗替尼治疗4个月后达到CCyR和MMR,持续深度缓解3年。出乎意料的是,疾病迅速发展为急性髓性白血病。进一步的研究发现出现了CCA/Ph-和基因突变。我们回顾性分析了我们数据库中BCR::ABL1和ph阴性的原发性危象CML患者,并对相关文献进行了全面的回顾。
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引用次数: 0
Le lymphome cutanée primitif diffus à grandes cellules B : à propos d’un cas Primary cutaneous diffuse large B-cell lymphoma: a case report 原发性皮肤弥漫性大B细胞淋巴瘤:病例报告
IF 0.9 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100538
Mustapha Mechtoune , Fatima Zahra Lahlimi , Illias Tazi , Hanane Rais , Houda Jouihri , Mohammed el Fadli
The association of cutaneous B-cell lymphoma and dermatofibrosarcoma is exceptional. We report the case of a 44-year-old patient with a history of Darier-Ferrand dermatofibrosarcoma who presented with cutaneous B-cell lymphoma characterized by large atypical skin lesions with an aggressive course. The patient was treated with a combination of RCHOP-type chemotherapy and surgical treatment. We shed light on this very rare association whose prognosis depends on early diagnosis and adequate management.
皮肤b细胞淋巴瘤和皮肤纤维肉瘤的关联是例外的。我们报告一例44岁的达利尔-费朗皮肤纤维肉瘤患者,其表现为皮肤b细胞淋巴瘤,其特征是大的非典型皮肤病变,具有侵袭性病程。患者采用rchop型化疗联合手术治疗。我们阐明了这种非常罕见的关联,其预后取决于早期诊断和适当的管理。
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引用次数: 0
Asciminib and inotuzumab ozogamicin: a new combination for highly refractory Ph-positive B-cell acute lymphoblastic leukemia 阿西米尼和inotuzumab ozogamicin:一种治疗高度难治性ph阳性b细胞急性淋巴细胞白血病的新组合
IF 0.9 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100546
Aneta Strumilowska , Katherine Devitt , Joanna Conant , Juli-Anne Gardner , Ashley Volaric , Neel Hegde , Diego Adrianzen-Herrera
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引用次数: 0
Trans-differentiation of plasma cell neoplasm to acute myeloid leukemia with monocytic features: Case report of divergent phenotype with identical genotype 浆细胞肿瘤向具有单核细胞特征的急性髓系白血病的反分化:基因型相同但表型不同的病例报告
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100504
Saja Asakrah , Kristin K. Deeb , Nikolaos Papadantonakis , George Deeb
Myeloid malignancies following treatment for plasma cell neoplasms (PCN) are infrequent but is a serious complication, often exhibiting complex karyotype and TP53 mutations. Plasma cell myeloma lineage switch to a myeloid malignancy with evident clonal relatedness is seldomly reported. Here, we report a unique case of acute myeloid leukemia with monocytic differentiation that shares clonal features with an antecedent plasma cell myeloma with t(4;14)(FGFR3::IGH). This phenomenon differs from therapy-related myeloid neoplasm arising from an unrelated clone and underscores the need to elucidate the role of mutations in pathways such as MAPK (e.g., BRAF and KRAS) into lineage plasticity.
浆细胞肿瘤(PCN)治疗后出现髓系恶性肿瘤并不常见,但却是一种严重的并发症,通常表现为复杂的核型和TP53突变。浆细胞骨髓瘤谱系转换为髓系恶性肿瘤与明显的克隆相关性很少报道。在这里,我们报告了一例独特的单核细胞分化急性髓性白血病,其克隆特征与先前的t(4;14)浆细胞骨髓瘤(FGFR3::IGH)相同。这种现象不同于由不相关克隆引起的治疗相关髓系肿瘤,强调了阐明MAPK(例如BRAF和KRAS)等通路突变在谱系可塑性中的作用的必要性。
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引用次数: 0
The road not taken: Exploring non-transplant options in De Novo philadelphia positive acute myeloid leukemia 未采取的道路:探索非移植选择在De Novo费城阳性急性髓性白血病
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100507
Mohamed I Sharif, Ahmad S. Alotaibi, Ruah Alyamany, Ali Alahmari, Hanan Alkhaldi, Ayman Saad, Mansour Alfayez
Acute myeloid leukemia (AML) is a heterogeneous disease with diverse molecular cytogenetic characteristics. Philadelphia-positive acute myeloid leukemia, a rare subtype of AML, is traditionally considered a high-risk, with the standard recommendation being an allogeneic hematopoietic cell transplant (HCT) in first remission. More recently, with better characterization and understanding of AML biology, novel therapies have been introduced. Drawing parallels from the advances seen in Philadelphia-positive acute lymphoblastic leukemia (ALL), the question arises whether potent tyrosine kinase inhibitors (TKI), such as ponatinib, in combination with AML-directed therapies, could be used in Philadelphia-positive AML, potentially eliminating the need for HCT in the first remission.
In this report, we review the literature on Philadelphia-positive AML, study a case where HCT was omitted, and explore potential signals that could support successful HCT omission.
急性髓性白血病(AML)是一种具有多种分子细胞遗传学特征的异质性疾病。费城阳性急性髓性白血病是一种罕见的急性髓性白血病亚型,传统上被认为是高风险的,标准建议在首次缓解时进行同种异体造血细胞移植(HCT)。最近,随着对AML生物学的更好的描述和理解,新的治疗方法被引入。与费城阳性急性淋巴细胞白血病(ALL)的进展相似,问题出现了,是否有效的酪氨酸激酶抑制剂(TKI),如ponatinib,与AML靶向治疗联合,可以用于费城阳性AML,潜在地消除首次缓解时对HCT的需求。在本报告中,我们回顾了费城阳性AML的文献,研究了一个遗漏HCT的病例,并探讨了可能支持成功遗漏HCT的潜在信号。
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引用次数: 0
Acute myeloid leukemia: A rare cause of acquired isolated factor VII deficiency 急性髓性白血病:获得性分离因子VII缺乏的罕见原因
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100516
Zaineb Mlayah, Haifa Hafsa, Alaa Ghorbel, Nader Slama, Sara Boukhris, Mohamed-Adnene Laatiri

Background

Acquired factor VII deficiency remains a rare pathology. Only 5 prior reported cases of aFVIID associated with acute myeloid leukemia (AML) have been described in the literature. Despite the rarity of these occurrences, these cases hold significant clinical and scientific implications given the need to understand the physopathology and to establish a therapeutic protocol ensuring better management.

Case presentation

A 38-year-old Arab male with AML was diagnosed at our Department of Clinical Hematology. The initial coagulation panel at admission revealed slightly low prothrombin ratio (PT) of 56 %, while the international normalized ratio (INR) and partial thromboplastin time (PTT) were within normal. Prothrombin complex coagulation factor dosing (PCCFD) confirmed an isolated reduction in the FVII in repeated samples, indicating an isolated deficiency. This patient did not present severe bleeding syndrome and had received conventional chemotherapy (cytarabine (Cytarabine)+ idarubicin). The evolution was marked by cytological remission (CR) with correction of coagulation disorders.

Conclusion

In conclusion, the intricate relationship between isolated aFVIID and AML remains mysterious. Researchers are essential to unravel the intricacies of this rare hematological condition. Further exploration into the molecular mechanisms, prognostic implications, and evolving treatment modalities is crucial to enhance the precision and efficacy of therapeutic interventions.
背景:获得性因子VII缺乏仍然是一种罕见的病理。文献中仅报道了5例与急性髓系白血病(AML)相关的aFVIID病例。尽管这些病例很少发生,但这些病例具有重要的临床和科学意义,因为需要了解生理病理并建立治疗方案以确保更好的管理。病例介绍:一位38岁的阿拉伯男性在我临床血液科确诊为急性髓性白血病。入院时的初始凝血结果显示凝血酶原比率(PT)略低,为56%,而国际标准化比率(INR)和部分凝血活素时间(PTT)在正常范围内。凝血酶原复合物凝血因子剂量(PCCFD)在重复样品中证实了FVII的分离减少,表明分离缺陷。该患者未出现严重出血综合征,并接受了常规化疗(阿糖胞苷(阿糖胞苷)+阿达柔比星)。进化的标志是细胞学缓解(CR)和凝血障碍的纠正。结论分离的aFVIID与AML之间的复杂关系仍然是一个谜。研究人员必须解开这种罕见血液学疾病的复杂性。进一步探索分子机制、预后影响和不断发展的治疗方式对于提高治疗干预的准确性和有效性至关重要。
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引用次数: 0
Proteasome inhibitors prevent tumor cell proliferation in HHV-8-unrelated PEL-like lymphoma 蛋白酶体抑制剂阻止hhv -8无关的pel样淋巴瘤的肿瘤细胞增殖。
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2024.100497
Kiyotaka Kawauchi , Toshie Ogasawara
Primary effusion lymphoma (PEL)-like lymphoma is a rare variant of PEL that exhibits diverse clinical behaviors, ranging from mild to aggressive disease courses. The clinicopathological features and effective treatments for this type of lymphoma have not been well defined. We found that proteasome inhibitors were effective in inhibiting the growth and survival of OGU1 cells, which were derived from a patient with aggressive PEL-like lymphoma, highlighting the critical role of proteasome activity in the proliferation of PEL-like lymphoma cells. This suggests that proteasome inhibitors, such as bortezomib, could be promising therapeutic options for patients who respond poorly to conventional chemotherapy.
原发性积液性淋巴瘤(PEL)样淋巴瘤是一种罕见的PEL变体,其临床表现多样,从轻度到侵袭性病程不等。该类型淋巴瘤的临床病理特征和有效治疗尚未明确。我们发现蛋白酶体抑制剂可以有效抑制OGU1细胞的生长和存活,OGU1细胞来源于侵袭性pel样淋巴瘤患者,这突出了蛋白酶体活性在pel样淋巴瘤细胞增殖中的关键作用。这表明蛋白酶体抑制剂,如硼替佐米,可能是对传统化疗反应不良的患者的有希望的治疗选择。
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引用次数: 0
Diagnostic and prognostic relevance of RAF1 gene in acute myeloid leukemia 急性髓系白血病中RAF1基因的诊断和预后相关性
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100528
Seyedeh Kosar Rahimpour , Yasin Mirazimi , Seyedeh Zahra Shahrokhi , Mohammad Sayyadi , Maryam Kargar , Mohammad Rafiee
Acute Myeloid Leukemia (AML) demands precise diagnostic and prognostic tools for accurate detection and personalized-treatment strategies. Using Real-Time PCR, we investigated the RAF1, miR-146 b-3p, and Circ-RPL15 network expression in AML. Because RAF1 is a crucial gene involved in various ways, it is considered a potential biomarker for prognosis and diagnosis. While no significant correlation was found within the network, RAF1 expression showed a marked difference between groups. ROC curve analysis for RAF1 demonstrated promising diagnostic performance, and our bioinformatics investigations supported its strong prognostic potential. Identifying such biomarkers can aid in developing better management based on patients' characteristics.
急性髓性白血病(AML)需要精确的诊断和预后工具来准确检测和个性化治疗策略。使用Real-Time PCR,我们研究了RAF1、miR-146 b-3p和Circ-RPL15网络在AML中的表达。由于RAF1是一个以多种方式参与的关键基因,因此被认为是预后和诊断的潜在生物标志物。虽然网络内部没有发现明显的相关性,但RAF1的表达在组间有显著差异。RAF1的ROC曲线分析显示了有希望的诊断性能,我们的生物信息学调查支持其强大的预后潜力。识别这些生物标记物有助于根据患者特征制定更好的管理方法。
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引用次数: 0
Case report: A young woman with acute peri‑myocarditis and acute myeloid leukaemia with myelodysplasia-related changes 病例报告:一名年轻女性急性心肌炎和急性髓性白血病伴骨髓增生异常相关改变
IF 0.7 Q4 HEMATOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.lrr.2025.100527
Zsolt Szakács , Tamás Habon , László Kereskai , László Gopcsa , Hussain Alizadeh

Background

Clinical presentation in acute myeloid leukaemia (AML) can result in a wide variety of clinical phenotypes.

Case Report

We report the case of a 34-year-old woman who presented with severe peri‑myocarditis and concomitant AML. The patient was treated with 5-azacitidine and venetoclax followed by haploidentical allogenic haematopoetic stem cell transplantation. Unfortunately, the patient developed febrile neutropenia and died because of overwhelming neutropenic sepsis. On autopsy, no evidence of AML was identified neither in bone marrow nor in cardiac tissue.

Conclusion

With this case report, we would like to emphasize the possibility of cardiac involvement in AML as well as the potential application of novel therapeutic agents in AML patients unfit for intensive chemotherapy.
背景:急性髓性白血病(AML)的临床表现可导致多种临床表型。病例报告我们报告一例34岁的女性,她表现为严重的心肌炎和伴发急性髓性白血病。患者接受5-阿扎胞苷和venetoclax治疗,随后进行单倍体同种异体造血干细胞移植。不幸的是,患者出现发热性中性粒细胞减少症,并因压倒性的中性粒细胞减少败血症而死亡。在尸检中,骨髓和心脏组织中都没有发现AML的证据。结论通过本病例报告,我们想强调AML累及心脏的可能性,以及新药物在不适合强化化疗的AML患者中的潜在应用。
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引用次数: 0
期刊
Leukemia Research Reports
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