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https://www.readbyqxmd.com/read/29148420/the-expression-of-mrna-for-peptidylarginine-deiminase-type-2-and-type-4-in-bone-marrow-cd34-cells-in-rheumatoid-arthritis
#1
Tatsuo Nagai, Yu Matsueda, Tetsuya Tomita, Hideki Yoshikawa, Shunsei Hirohata
OBJECTIVES: Antibodies directed to citrullinated proteins are highly specific for rheumatoid arthritis (RA). Citrullination is catalyzed by peptidylarginine deiminase (PAD) enzymes. The current study examined the mRNA expression of PADI2 and PADI4 in bone marrow (BM) CD34+ cells from RA patients. METHODS: CD34+ cells were purified from BM samples obtained from 48 RA patients and from 30 osteoarthritis (OA) patients during joint operations via aspiration from the iliac crest...
November 14, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29148209/telocytes-in-the-human-sinoatrial-node
#2
Lubov B Mitrofanova, Andrey N Gorshkov, Petr V Konovalov, Julia S Krylova
The sinoatrial node (SAN) is composed mostly of pacemaker, transitional and Purkinje-like cells. Pacemaker cells, especially in the centre of the SAN, are surrounded by dense fibrous tissue and do not have any contact with transitional cells. We hypothesize that the SAN contains telocytes that have contacts with pacemaker cells and contractile myocardium. Immunohistochemistry using antibodies against HCN4 and antibody combinations against CD34 and HCN4 was carried out on 12 specimens. Confocal laser scanning microscopy (CLSM) with two mixtures of primary antibodies, namely CD34/S100 and vimentin/S100, was performed in three cases...
November 17, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29146734/humanized-mice-in-studying-efficacy-and-mechanisms-of-pd-1-targeted-cancer-immunotherapy
#3
Minan Wang, Li-Chin Yao, Mingshan Cheng, Danying Cai, Jan Martinek, Chong-Xian Pan, Wei Shi, Ai-Hong Ma, Ralph W De Vere White, Susan Airhart, Edison T Liu, Jacques Banchereau, Michael A Brehm, Dale L Greiner, Leonard D Shultz, Karolina Palucka, James G Keck
Establishment of an in vivo small animal model of human tumor and human immune system interaction would enable preclinical investigations into the mechanisms underlying cancer immunotherapy. To this end, non-obese diabetic (NOD).Cg-Prkdc(scid)IL2rg(tm1Wjl) /Sz (null; NSG) mice were transplanted with human (h)CD34(+) hematopoietic progenitor and stem cells, which leads to the development of human hematopoietic and immune systems [humanized NSG (HuNSG)]. HuNSG mice received human leukocyte antigen partially matched tumor implants from patient-derived xenografts [PDX; nonsmall cell lung cancer (NSCLC), sarcoma, bladder cancer, and triple-negative breast cancer (TNBC)] or from a TNBC cell line-derived xenograft (CDX)...
November 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29143796/angelica-sinensis-polysaccharides-ameliorate-stress-induced-premature-senescence-of-hematopoietic-cell-via-protecting-bone-marrow-stromal-cells-from-oxidative-injuries-caused-by-5-fluorouracil
#4
Hanxianzhi Xiao, Lirong Xiong, Xiaoying Song, Pengwei Jin, Linbo Chen, Xiongbin Chen, Hui Yao, Yaping Wang, Lu Wang
Myelosuppression is the most common complication of chemotherapy. Decline of self-renewal capacity and stress-induced premature senescence (SIPS) of hematopoietic stem cells (HSCs) induced by chemotherapeutic agents may be the cause of long-term myelosuppression after chemotherapy. Whether the mechanism of SIPS of hematopoietic cells relates to chemotherapeutic injury occurred in hematopoietic microenvironment (HM) is still not well elucidated. This study explored the protective effect of Angelica sinensis polysaccharide (ASP), an acetone extract polysaccharide found as the major effective ingredients of a traditional Chinese medicinal herb named Chinese Angelica (Dong Quai), on oxidative damage of homo sapiens bone marrow/stroma cell line (HS-5) caused by 5-fluorouracil (5-FU), and the effect of ASP relieving oxidative stress in HM on SIPS of hematopoietic cells...
October 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29143396/sustained-release-of-stem-cell-factor-in-a-double-network-hydrogel-for-ex-vivo-culture-of-cord-blood-derived-cd34-cells
#5
Yuanhao Zhang, Xiuwei Pan, Zhen Shi, Haibo Cai, Yun Gao, Weian Zhang
OBJECTIVES: Stem cell factor (SCF) is considered as a commonly indispensable cytokine for proliferation of haematopoietic stem cells (HSCs), which is used in large dosages during ex vivo culture. The work presented here aimed to reduce the consumption of SCF by sustained release but still support cells proliferation and maintain the multipotency of HSCs. MATERIALS AND METHODS: Stem cell factor was physically encapsulated within a hyaluronic acid/gelatin double network (HGDN) hydrogel to achieve a slow release rate...
November 15, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29142190/detection-of-atherosclerotic-plaques-in-the-rabbit-aorta-using-ultrasound-microbubbles-conjugated-to-interleukin-18-antibodies
#6
Zhen-Zhen Jiang, Xia-Tian Liu, Cai-Ye Ma, Cong He, Xing-Yun Li, Chuan-Lin Hou, Zu-Sheng Cheng, Guo-Yuan Xia
BACKGROUND The purpose of the study was to investigate the ability of microbubbles (MBs) targeting interleukin-18 (IL-18) to detect plaques in a rabbit atherosclerotic plaque model. MATERIAL AND METHODS A rabbit atherosclerotic plaque model was established. The locations of the atherosclerotic plaques were verified by two-dimensional scanning and color Doppler flow imaging. An IL-18 antibody was conjugated to naked MBs (MBc) using the biotin-streptavidin conjugation method, resulting in the formation of MBIL-18...
November 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29141868/geographic-clonal-tracking-in-macaques-provides-insights-into-hspc-migration-and-differentiation
#7
Chuanfeng Wu, Diego A Espinoza, Samson J Koelle, E Lake Potter, Rong Lu, Brian Li, Di Yang, Xing Fan, Robert E Donahue, Mario Roederer, Cynthia E Dunbar
The geographic distribution of hematopoiesis at a clonal level is of interest in understanding how hematopoietic stem and progenitor cells (HSPCs) and their progeny interact with bone marrow (BM) niches during regeneration. We tagged rhesus macaque autologous HSPCs with genetic barcodes, allowing clonal tracking over time and space after transplantation. We found marked geographic segregation of CD34(+) HSPCs for at least 6 mo posttransplantation, followed by very gradual clonal mixing at different BM sites over subsequent months to years...
November 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29140957/beneficial-effects-of-angiotensin-1-7-on-cd34-cells-from-heart-failure-patients
#8
Colleen T Cole-Jeffrey, Carl J Pepine, Michael J Katovich, Maria B Grant, Mohan K Raizada, Sugata Hazra
The dysfunctional nature of CD34 cells from heart failure (HF) patients makes them unsuitable for autologous stem cell therapy. In view of evidence that the vasoprotective axis of the renin-angiotensin system (RAS) improves CD34 cell functions, we hypothesized that CD34 cells from HF patients will be dysfunctional and that Angiotensin-(1-7) [Ang-(1-7)] would improve their function. Peripheral blood was collected from NYHA class II-IV HF patients (n=31) and reference subjects (n=16). CD34 cell numbers from HF patients were reduced by 47% (p<0...
November 8, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29140881/pdgfb-rearrangements-in-dermatofibrosarcoma-protuberans-of-the-vulva-a-study-of-11-cases-including-myxoid-and-fibrosarcomatous-variants
#9
Khadijeh Jahanseir, Deyin Xing, Patricia T Greipp, William R Sukov, Gary L Keeney, Brooke E Howitt, J Kenneth Schoolmeester
Dermatofibrosarcoma protuberans (DFSP) is a low-grade fibroblastic sarcoma that tends to arise in young to middle age adults and involve the trunk and proximal extremities. Rare examples of vulvar DFSP have been reported, including myxoid, myoid, and fibrosarcomatous variants, but detection of the characteristic t(17;22)(q22;q13) that produces COL1A1-PDGFB gene fusion has not been evaluated in a large series of primary vulvar tumors. The clinical, morphologic, immunohistochemical, and molecular cytogenetic features of 11 cases were examined...
November 14, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/29139170/single-cell-resolution-of-human-hemato-endothelial-cells-defines-transcriptional-signatures-of-hemogenic-endothelium
#10
Mathew G Angelos, Juan E Abrahante, Robert H Blum, Dan S Kaufman
Endothelial-to-hematopoietic transition (EHT) is an important stage in definitive hematopoietic development. However, the genetic mechanisms underlying human EHT remains poorly characterized. We performed single cell RNA-seq using 55 hemogenic endothelial cells (HE: CD31(+) CD144(+) CD41(-) CD43(-) CD45(-) CD73(-) RUNX1c(+) ), 47 vascular endothelial cells without hematopoietic potential (non-HE: CD31(+) CD144(+) CD41(-) CD43(-) CD45(-) CD73(-) RUNX1c(-) ), and 35 hematopoietic progenitor cells (HP: CD34(+) CD43(+) RUNX1c(+) ) derived from human embryonic stem cells (hESCs)...
November 15, 2017: Stem Cells
https://www.readbyqxmd.com/read/29138222/decitabine-enhances-targeting-of-aml-cells-by-cd34-progenitor-derived-nk-cells-in-nod-scid-il2rg-null-mice
#11
Jeannette Cany, Mieke W H Roeven, Janneke S Hoogstad-van Evert, Willemijn Hobo, Frans Maas, Rosalia Franco Fernandez, Nicole M A Blijlevens, Walter J van der Velden, Gerwin Huls, Joop H Jansen, Nicolaas P M Schaap, Harry Dolstra
Combining NK cell adoptive transfer with hypomethylating agents (HMA) is an attractive therapeutic approach for patients with acute myeloid leukemia (AML). However, data regarding the impact of HMA on NK cell functionality are mostly derived from in vitro studies with high non-clinical relevant drug concentrations. Here, we report a comparative study of azacitidine and decitabine in combination with allogeneic NK cells generated from CD34(+) hematopoietic stem and progenitor cells (HSPC-NK cells) in in vitro and in vivo AML models...
November 14, 2017: Blood
https://www.readbyqxmd.com/read/29137845/enumeration-of-bone-marrow-plasmacytoid-dendritic-cells-by-multiparameter-flow-cytometry-as-a-prognostic-marker-following-allogeneic-hematopoietic-stem-cell-transplantation
#12
Ruijun Jeanna Su, Ralph Green, Mingyi Chen
Plasmacytoid dendritic cells (pDCs) promote tolerance in solid organ transplants and hematopoietic stem cell transplantation (HSCT). pDCs originate from CD34(+) hematopoietic progenitors. Following allogeneic hematopoietic stem cell transplant (allo-HSCT), pDC reconstitution in the BM and PB gradually attain levels similar to those in healthy individuals. We have investigated the recovery of pDC following allo-HSCT as a means to predict successful marrow engraftment. We retrospectively studied immune reconstitution of pDC in the BM of 48 patients following allo-HSCT for initial diagnoses of leukemia or other malignancies...
October 31, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29137406/the-forkhead-box-c1-foxc1-transcription-factor-is-downregulated-in-acute-promyelocytic-leukemia
#13
Emiliano Fabiani, Giulia Falconi, Nélida Inés Noguera, Ernestina Saulle, Laura Cicconi, Mariadomenica Divona, Cristina Banella, Alessandra Picardi, Anna Maria Cerio, Letizia Boe, Massimo Sanchez, Elvira Pelosi, Ugo Testa, Francesco Lo-Coco, Maria Teresa Voso
Forkhead box (FOX) genes encode transcription factors, which regulate embryogenesis and play an important role in hematopoietic differentiation and in mesenchymal niche maintenance. Overexpression of the family member FOXC1 has been reported in solid tumors and acute myeloid leukemia (AML). We studied FOXC1 expression and function in acute promyelocytic leukemia (APL) and normal hematopoietic progenitors. FOXC1 mRNA and protein levels were significantly lower in primary marrow samples from 27 APL patients, as compared to samples obtained from 27 patients with other AML subtypes, and 5 normal CD34+ hematopoietic cells...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137234/the-af4-mll-fusion-transiently-augments-multilineage-hematopoietic-engraftment-but-is-not-sufficient-to-initiate-leukemia-in-cord-blood-cd34-cells
#14
Cristina Prieto, Rolf Marschalek, Alessa Kühn, Adelheid Bursen, Clara Bueno, Pablo Menéndez
The translocation t(4;11)(q21;q23) is the hallmark genetic abnormality associated with infant pro-B acute lymphoblastic leukemia (B-ALL) and has the highest frequency of rearrangement in Mixed-lineage leukemia (MLL) leukemias. Unlike other MLL translocations, MLL-AF4-induced proB-ALL is exceptionally difficult to model in mice/humans. Previous work has investigated the relevance of the reciprocal translocation fusion protein AF4-MLL for t(4;11) leukemia, finding that AF4-MLL is capable of inducing proB-ALL without requirement for MLL-AF4 when expressed in murine hematopoietic stem/progenitor cells (HSPCs)...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137048/apatinib-for-the-treatment-of-pulmonary-epithelioid-hemangioendothelioma-a-case-report-and-literature-review
#15
Zhipeng Zheng, Hanying Wang, Hanliang Jiang, Enguo Chen, Jun Zhang, Xinyou Xie
RATIONALE: Pulmonary epithelioid hemangioendothelioma (P-EHE) is a rare tumor, with no established standard treatment. Overexpression of vascular endothelial growth factor receptor 2 (VEGFR-2) has been reported in some P-EHE patients. Apatinib, a new small molecule tyrosine kinase inhibitor that specifically targets VEGFR-2, has therapeutic benefits in some advanced tumors. However, its efficacy in P-EHE cases has not been reported. PATIENT CONCERNS: Herein, we presented a 44-year-old man with recurrent hemoptysis for approximately 9 years...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136688/-characteristics-of-erg-fli-1-cd34-cd31-and-f%C3%A2-rag-expression-in-hepatic-malignant-vascular-tumors
#16
Z B Wang, X J An, J F Deng, J H Liu, H Y Shi
Objective: To investigate the expression of ERG, Fli-1, CD34, CD31 and factor Ⅷ-related antigen(FⅧRAg) in hepatic malignant vascular tumors. Methods: A retrospective analysis was conducted on 63 cases of primary hepatic malignant vascular tumors and 31 cases of hepatic other malignant spindle cell tumors collected during January 1986 to January 2014. EnVision method was used to detect the expression of ERG, Fli-1, CD34, CD31, FⅧRAg. Results: Sixty-three cases of malignant vascular tumors, including 24 cases of angiosarcoma, 38 cases of epithelioid hemangioendothelioma and 1 case of hepatic Kaposi's sarcoma...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29134688/neutropenic-fever-during-peripheral-blood-progenitor-cell-mobilization-is-associated-with-decreased-cd34-cell-collection-and-increased-apheresis-collection-days
#17
Jack Khouri, Lisa Rybicki, Navneet Majhail, Matt Kalaycio, Edward Copelan, Brad Pohlman, Brian Hill, Robert Dean, Aleksandr Lazaryan, Betty Hamilton, Steven Andresen, Ronald Sobecks, Brian Bolwell, Hien Liu
BACKGROUND: Peripheral blood progenitor cell (PBPC) mobilization with chemotherapy in addition to Granulocyte-Colony Stimulating Factor (G-CSF) improves cell collection compared to G-CSF alone; however, it is associated with increased risk of neutropenic fever (NF). METHODS: We analyzed risk factors for post-priming NF and NF association with autologous stem cell transplant outcomes. Between 1998 and 2008, 593 adult patients with lymphoma underwent PBPC mobilization with etoposide and G-CSF...
November 14, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/29134662/dose-capping-of-plerixafor-in-patients-weighing%C3%A2-more-than-100%C3%A2-kg-at-one-vial-led-to-successful-mobilization-outcomes-and-significant-cost-savings
#18
Gabriel Park, Sepideh Shayani, Tracey Stiller, Shirong Wang, Shan Yuan
BACKGROUND: Plerixafor is frequently used as an adjunct agent to improve mobilization of peripheral blood stem cells in many clinical settings. However, its high cost (>$8000 per single-use 24-mg vial) is a significant concern. The manufacturer-recommended dose is 0.24 mg/kg. Therefore, patients weighing more than 100 kg would require a second vial, thus doubling the drug cost per dose. We implemented a policy of capping the dose of plerixafor at 24 mg, or one vial, for patients weighing more than 100 kg...
November 13, 2017: Transfusion
https://www.readbyqxmd.com/read/29132197/humanized-mice-for-the-evaluation-of-francisella-tularensis-vaccine-candidates
#19
Hanseul Oh, C-Yoon Kim, Chang-Hwan Kim, Gyeung-Haeng Hur, Ji Min Lee, Seo-Na Chang, Jae-Hak Park
Francisella tularensis (FT), a highly infectious pathogen, is considered to be a potential biological weapon owing to the current lack of a human vaccine against it. Tul4 and FopA, both outer membrane proteins of FT, play an important role in the bacterium's immunogenicity. In the present study, we evaluated the immune response of mice-humanized with human CD34+ cells (hu-mice)-to a cocktail of recombinant Tul4 and FopA (rTul4 and rFopA), which were codon-optimized and expressed in Escherichia coli. Not only did the cocktail-immunized hu-mice produce a significant human immunoglobulin response, they also exhibited prolonged survival against an attenuated live vaccine strain as well as human T cell in the spleen...
November 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29131533/a-phase-i-ii-pharmacokinetics-pharmacodynamics-study-of-irinotecan-combined-with-s-1-for-recurrent-metastatic-breast-cancer-in-patients-with-selected-ugt1a1-genotypes-the-jbcrg-m01-study
#20
Hiroshi Ishiguro, Shigehira Saji, Shogo Nomura, Sunao Tanaka, Takayuki Ueno, Masahide Onoue, Hiroji Iwata, Takeharu Yamanaka, Yasutsuna Sasaki, Masakazu Toi
S-1 and irinotecan combination is attractive for breast cancer refractory to anthracyclines and taxanes. Patients with advanced human epidermal growth factor receptor 2 (HER2)-negative breast cancer previously treated with anthracyclines and taxanes were eligible. Patients with brain metastases and homozygous for UGT1A1 *6 or *28 or compound heterozygous (*6/*28) were excluded. A dose-escalation design was chosen for the phase I portion (level 1: irinotecan 80 mg/m(2)  days 1-8 and S-1 80 mg/m(2)  days 1-14 every 3 weeks; level 2: irinotecan 100 mg/m(2) and S-1 80 mg/m(2) )...
November 13, 2017: Cancer Medicine
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