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https://www.readbyqxmd.com/read/29785023/hiv-vaccine-candidate-activation-of-hypoxia-and-the-inflammasome-in-cd14-monocytes-is-associated-with-a-decreased-risk-of-siv-mac251-acquisition
#1
Monica Vaccari, Slim Fourati, Shari N Gordon, Dallas R Brown, Massimilano Bissa, Luca Schifanella, Isabela Silva de Castro, Melvin N Doster, Veronica Galli, Maria Omsland, Dai Fujikawa, Giacomo Gorini, Namal P M Liyanage, Hung V Trinh, Katherine M McKinnon, Kathryn E Foulds, Brandon F Keele, Mario Roederer, Richard A Koup, Xiaoying Shen, Georgia D Tomaras, Marcus P Wong, Karissa J Munoz, Johannes S Gach, Donald N Forthal, David C Montefiori, David J Venzon, Barbara K Felber, Margherita Rosati, George N Pavlakis, Mangala Rao, Rafick-Pierre Sekaly, Genoveffa Franchini
Qualitative differences in the innate and adaptive responses elicited by different HIV vaccine candidates have not been thoroughly investigated. We tested the ability of the Aventis Pasteur live recombinant canarypox vector (ALVAC)-SIV, DNA-SIV and Ad26-SIV vaccine prime modalities together with two ALVAC-SIV + gp120 protein boosts to reduce the risk of SIVmac251 acquisition in rhesus macaques. We found that the DNA and ALVAC prime regimens were effective, but the Ad26 prime was not. The activation of hypoxia and the inflammasome in CD14+ CD16- monocytes, gut-homing CCR5-negative CD4+ T helper 2 (TH 2) cells and antibodies to variable region 2 correlated with a decreased risk of SIVmac251 acquisition...
May 21, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29778184/interaction-of-prrs-virus-with-bone-marrow-monocyte-subsets
#2
Teresa Fernández-Caballero, Belén Álvarez, Fernando Alonso, Concepción Revilla, Javier Martínez-Lobo, Cinta Prieto, Ángel Ezquerra, Javier Domínguez
PRRSV can replicate for months in lymphoid organs leading to persistent host infections. Porcine bone marrow comprises two major monocyte subsets, one of which expresses CD163 and CD169, two receptors involved in the entry of PRRSV in macrophages. In this study, we investigate the permissiveness of these subsets to PRRSV infection. PRRSV replicates efficiently in BM CD163+ monocytes reaching titers similar to those obtained in alveolar macrophages, but with a delayed kinetics. Infection of BM CD163- monocytes was variable and yielded lower titers...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29778179/recombinant-adenovirus-delivered-soluble-cd163-and-sialoadhesin-receptors-protected-pigs-from-porcine-reproductive-and-respiratory-syndrome-virus-infection
#3
Wenlong Xia, Zhi Wu, Changming Guo, Shanyuan Zhu, Xinyu Zhang, Xiaoli Xia, Huaichang Sun
Porcine reproductive and respiratory syndrome (PRRS) is one of the most important swine diseases affecting pig industry worldwide. Sialoadehesin (Sn) and CD163 are the two specific receptors for PRRSV infection of porcine alveolar macrophages. Our previous study showed that the soluble Sn receptor Sn4D-Fc and soluble CD163 receptor SRCR59-Fc expressed by the two recombinant adenoviral (rAd) vectors have an additive anti-PRRSV effect in vitro. In the present study, rAd-Sn4D-Fc and rAd-SRCR59-Fc were inoculated into pigs, and the efficient expression of Sn4D-Fc and SRCR59-Fc proteins was detected by ELISA...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29776615/a-new-and-efficient-culture-method-for-porcine-bone-marrow-derived-m1-and-m2-polarized-macrophages
#4
Jiye Gao, Maaike R Scheenstra, Albert van Dijk, Edwin J A Veldhuizen, Henk P Haagsman
BACKGROUND: Macrophages play an important role in the innate immune system as part of the mononuclear phagocyte system (MPS). They have a pro-inflammatory signature (M1-polarized macrophages) or anti-inflammatory signature (M2-polarized macrophages) based on expression of surface receptors and secretion of cytokines. However, very little is known about the culture of macrophages from pigs and more specific about the M1 and M2 polarization in vitro. METHODS: Porcine monocytes or mononuclear bone marrow cells were used to culture M1- and M2-polarized macrophages in the presence of GM-CSF and M-CSF, respectively...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29775390/polarization-and-distribution-of-tumor-associated-macrophages-and-cox-2-expression-in-basal-cell-carcinoma-of-the-ocular-adnexae
#5
Ute Kaiser, Karin U Loeffler, Jennifer Nadal, Frank G Holz, Martina C Herwig-Carl
PURPOSE: Basal cell carcinoma (BCC) is a locally invasive skin tumor which can be subdivided into a circumscribed nodular and an invasive fibrosing subtype. There is increasing evidence that macrophages play an important role in interacting between tumor cells and their microenvironment, thereby affecting not only the invasive potential but also the patients' prognosis. Thus, we wanted to compare these two BCC variants with regard to tumor-related inflammation, COX-2 expression, distribution and polarization of tumor-associated macrophages...
May 18, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29772841/the-effect-of-human-mesenchymal-stem-cells-derived-from-wharton-s-jelly-in-spinal-cord-injury-treatment-is-dose-dependent-and-can-be-facilitated-by-repeated-application
#6
Petr Krupa, Irena Vackova, Jiri Ruzicka, Kristyna Zaviskova, Jana Dubisova, Zuzana Koci, Karolina Turnovcova, Lucia Machova Urdzikova, Sarka Kubinova, Svatopluk Rehak, Pavla Jendelova
Human mesenchymal stem cells derived from Wharton's jelly (WJ-MSCs) were used for the treatment of the ischemic-compression model of spinal cord injury in rats. To assess the effectivity of the treatment, different dosages (0.5 or 1.5 million cells) and repeated applications were compared. Cells or saline were applied intrathecally by lumbar puncture for one week only, or in three consecutive weeks after injury. Rats were assessed for locomotor skills (BBB, rotarod, flat beam) for 9 weeks. Spinal cord tissue was morphometrically analyzed for axonal sprouting, sparing of gray and white matter and astrogliosis...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29769438/cytometry-tof-identifies-alveolar-macrophage-subtypes-in-acute-respiratory-distress-syndrome
#7
Eric D Morrell, Alice Wiedeman, S Alice Long, Sina A Gharib, T Eoin West, Shawn J Skerrett, Mark M Wurfel, Carmen Mikacenic
Studies in human peripheral blood monocyte-derived macrophages in vitro have shown clear evidence that multiple macrophage polarization states exist. The extent to which different alveolar macrophage (AM) polarization states exist in homeostasis or in the setting of severe injury such as acute respiratory distress syndrome (ARDS) is largely unknown. We applied single-cell cytometry TOF (CyTOF) to simultaneously measure 36 cell-surface markers on CD45+ cells present in bronchoalveolar lavage from healthy volunteers, as well as mechanically ventilated subjects with and without ARDS...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29765945/atypical-fibroxanthoma-of-the-bulbar-conjunctiva-a-unique-case-describing-the-pathology-clinical-presentation-and-management
#8
Justin Kuiper, Ankit Shah, Rebecca Kuennen, Lynn Schoenfield
Background/Aims: Atypical fibroxanthoma is an uncommon tumor that usually occurs in the skin of the head and neck of the elderly with significant sun exposure. We describe a unique case featuring a rare ocular surface conjunctival tumor (atypical fibroxanthoma) and provide insight on its characteristic clinical features, surgical management, and histology. Methods: A 71-year-old male fisherman with no pertinent ocular history presented to an academic center with a rapidly enlarging bulbar conjunctival mass in the right perilimbal region for the past several months...
April 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29764855/magnetic-resonance-imaging-of-tumor-associated-macrophages-clinical-translation
#9
Maryam Aghighi, Ashok Joseph Theruvath, Anuj Pareek, Laura Pisani, Raphael Alford, Anne Monika Muehe, Tarsheen K Sethi, Samantha J Holdsworth, Florette K Hazard, Dita Gratzinger, Sandra Luna-Fineman, Ranjana H Advani, Sheri L Spunt, Heike E Daldrup-Link
PURPOSE: Tumor associated macrophages (TAM) in malignant tumors have been linked to tumor aggressiveness and represent a new target for cancer immunotherapy. As new TAM-targeted immunotherapies are entering clinical trials, it is important to detect and quantify TAM with non-invasive imaging techniques. The purpose of this study was to determine if ferumoxytol-enhanced MRI can detect TAM in lymphomas and bone sarcomas of pediatric patients and young adults. EXPERIMENTAL DESIGN: In a first-in-patient , IRB-approved prospective clinical trial, 25 pediatric and young adult patients with lymphoma or bone sarcoma underwent ferumoxytol-enhanced MRI...
May 15, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29745990/an-il-10-dominant-polarization-of-monocytes-is-a-feature-of-indian-visceral-leishmaniasis
#10
Susmita Roy, Debanjan Mukhopadhyay, Shibabrata Mukherjee, Srija Moulik, Soumyadip Chatterji, Nayan Brahme, Netai Pramanik, Rama P Goswami, Bibhuti Saha, Mitali Chatterjee
BACKGROUND: Leishmania donovani, the causative parasite of Visceral Leishmaniasis (VL) deviously manipulates host monocytes/macrophages to ensure its survival. Although monocytes/macrophages from patients with VL have demonstrated an impaired oxidative burst and antigen presentation, an unanswered yet pertinent question remains as to whether they are deactivated or alternatively activated. METHODS AND RESULTS: The significantly raised plasma levels of IL-4/IL-13 and IL-10 in VL patients suggested a microenvironment conducive for alternative activation of monocytes/macrophages...
May 10, 2018: Parasite Immunology
https://www.readbyqxmd.com/read/29743262/mehp-induced-rat-testicular-inflammation-does-not-exacerbate-germ-cell-apoptosis
#11
Jorine J L P Voss, Angela R Stermer, Rashin Ghaffari, Richa Tiwary, John Henry Richburg
The testis is an organ that maintains an immune suppressive environment. We previously revealed that exposure of pre-pubertal rats to an acute dose of a well-described Sertoli cell toxicant, mono-(2-ethylhexyl) phthalate (MEHP), leads to an accumulation of CD11b+ immune cells in the testicular interstitial space that closely correlates with a robust incidence of germ cell (GC) apoptosis. Here we test the hypothesis that the infiltrating immune cells contribute to GC apoptosis. Postnatal day 28 Fischer rats that received an oral dose of 700 mg/kg MEHP showed a significant infiltration of both CD11bc+/CD68+/CD163- macrophages and neutrophils...
May 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29738359/genomic-profile-and-pathologic-features-of-diffuse-large-b-cell-lymphoma-subtype-of-methotrexate-associated-lymphoproliferative-disorder-in-rheumatoid-arthritis-patients
#12
Joaquim Carreras, Yara Yukie Kikuti, Masashi Miyaoka, Shinichiro Hiraiwa, Sakura Tomita, Haruka Ikoma, Yusuke Kondo, Sawako Shiraiwa, Kiyoshi Ando, Shinji Sato, Yasuo Suzuki, Ikuo Miura, Giovanna Roncador, Naoya Nakamura
Rheumatoid arthritis patients often develop the diffuse large B-cell lymphoma subtype of methotrexate-associated lymphoproliferative disorder (DLBCLMTX-LPD ). We characterized the genomic profile and pathologic characteristics of 20 biopsies using an integrative approach. DLBCLMTX-LPD was associated with extranodal involvement, a high/high-intermediate international prognostic index in 53% of cases, and responded to MTX withdrawal. The phenotype was nongerminal center B-cell in 85% of samples and Epstein-Barr encoding region positive (EBER+ ) in 65%, with a high proliferation index and intermediate MYC expression levels...
May 5, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29737564/il-1%C3%AE-from-m2-macrophages-promotes-migration-and-invasion-of-escc-cells-enhancing-epithelial-mesenchymal-transition-and-activating-nf-%C3%AE%C2%BAb-signaling-pathway
#13
Jian Zhou, Shutao Zheng, Tao Liu, Qing Liu, Yumei Chen, Doudou Tan, Rong Ma, Xiaomei Lu
Despite the phenotype has been established that M2 macrophages promotes the metastasis of ESCC, question still remains as to how the M2 macrophages facilitated metastasis of ESCC cells. To begin with, immunohistochemistry was performed to detect the expression of CD163, one typical surface marker of M2 macrophages in 90 paired ESCC and its normal controls after meta-analyzing the relevant studies regarding M2 macrophages in ESCC, confirming that infiltration of M2 macrophages was significantly linked with lymph node metastasis, T classification, and inferior overall survival of ESCC...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29731831/prognostic-significance-of-cd68-cd163-and-folate-receptor-%C3%AE-positive-macrophages-in-hepatocellular-carcinoma
#14
Koji Minami, Kiyokazu Hiwatashi, Shinichi Ueno, Masahiko Sakoda, Satoshi Iino, Hiroshi Okumura, Motoyuki Hashiguchi, Yota Kawasaki, Hiroshi Kurahara, Yuko Mataki, Kosei Maemura, Hiroyuki Shinchi, Shoji Natsugoe
Cluster of differentiation (CD)68 may be used as a pan-macrophage or M1 marker, whereas CD163 may be used as an M2 marker. Furthermore, folate receptor (FR)β exhibits an M2-like functional profile. In the present study, CD68 and CD163 were used to evaluate and classify tumor-associated macrophages (TAMs). The expression of CD68, CD163 and FRβ by TAMs in hepatocellular carcinoma (HCC) Tissues was investigated. Samples from 105 patients with HCC were evaluated using immunohistochemistry. The results revealed that CD68 and CD163 overexpression was associated with a worse prognosis...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29731056/clinical-significance-of-macrophage-polarization-in-antibody-mediated-rejection-of-renal-allograft
#15
J Kim, S-E Choi, B J Lim, Y S Kim, K H Huh, J Lee, S I Kim, M S Kim, H J Jeong
BACKGROUND: The significance of proinflammatory M1 (classically activated) and profibrotic M2 (alternatively activated) macrophages in antibody-mediated rejection (ABMR) after kidney transplantation has not been investigated. METHODS: Fifty-five biopsy-confirmed ABMR samples were stained with MRP 8/14 (a marker of M1 macrophages) and CD163 (a marker of M2 macrophages), and positive cells were counted in glomeruli and the tubulointerstitium, respectively. Patients were classified into M1 and M2 polarization groups according to the glomerular and tubulointerstitial M1:M2 ratio, and the results were compared with Banff scores, serum creatinine level, estimated glomerular filtration rate (eGFR), and graft survival...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29725763/tumor-cell-expression-of-cd163-is-associated-to-postoperative-radiotherapy-and-poor-prognosis-in-patients-with-breast-cancer-treated-with-breast-conserving-surgery
#16
Stina Garvin, Husam Oda, Lars-Gunnar Arnesson, Annelie Lindström, Ivan Shabo
PURPOSE: Cancer cell fusion with macrophages results in highly tumorigenic hybrids that acquire genetic and phenotypic characteristics from both maternal cells. Macrophage traits, exemplified by CD163 expression, in tumor cells are associated with advanced stages and poor prognosis in breast cancer (BC). In vitro data suggest that cancer cells expressing CD163 acquire radioresistance. METHODS: Tissue microarray was constructed from primary BC obtained from 83 patients treated with breast-conserving surgery, 50% having received postoperative radiotherapy (RT) and none of the patients had lymph node or distant metastasis...
May 3, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29725402/high-expression-of-b7-h3-and-cd163-in-cancer-tissues-indicates-malignant-clinicopathological-status-and-poor-prognosis-of-patients-with-urothelial-cell-carcinoma-of-the-bladder
#17
Zhili Xu, Ling Wang, Jianhua Tian, Hongwei Man, Pengfei Li, Baoen Shan
The objective of the present study was to investigate the association of B7-H3 expression and cluster of differentiation (CD)163+ tumor-associated macrophage (TAM) infiltration with clinicopathological parameters in urothelial cell carcinoma of the bladder (UCB), and to investigate their potential conjoint effects on progression of UCB. B7-H3 expression and CD163+ TAM infiltration in tumor specimens from 134 consecutive patients that underwent radical cystectomy for UCB were tested using immunohistochemistry, followed by statistical analysis...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29721394/merkel-cell-carcinoma-expresses-the-immunoregulatory-ligand-cd200-and-induces-immunosuppressive-macrophages-and-regulatory-t-cells
#18
Maria Rita Gaiser, Cleo-Aron Weis, Timo Gaiser, Hong Jiang, Kristina Buder-Bakhaya, Esther Herpel, Arne Warth, Ying Xiao, Lingling Miao, Isaac Brownell
Merkel cell carcinoma (MCC) is a rare and aggressive skin cancer that responds to PD-1/PD-L1 immune checkpoint inhibitors. CD200 is another checkpoint modulator whose receptor is found on tumor-promoting myeloid cells, including M2 macrophages. We found high CD200 mRNA expression in MCC tumors, and CD200 immunostaining was demonstrated on 95.5% of MCC tumors. CD200R-expressing myeloid cells were present in the MCC tumor microenvironment. MCC-associated macrophages had a higher average CD163:CD68 staining ratio (2...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29718001/the-cd163-long-range-scavenger-receptor-cysteine-rich-repeat-expression-purification-and-x-ray-crystallographic-characterization
#19
Rui Li, Hongfang Ma, Longguang Jiang, Songlin Qiao, Yubao Zhi, Mingdong Huang, Ruiguang Deng, Gaiping Zhang
Scavenger receptors (SRs) play critical roles in various physiological and pathological pathways. One of them, CD163, is a multifunctional endocytic receptor and is characterized by a long-range scavenger receptor cysteine-rich (SRCR) repeat. However, the structural and functional details of this long-range SRCR repeat have not yet been elucidated. In this study, the CD163 long-range SRCR repeat was expressed in Drosophila Schneider 2 cells. The recombinant protein was homogeneous after purification by metal-affinity, cation-exchange and size-exclusion chromatography...
May 1, 2018: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/29714078/overexpression-of-p21-activated-kinase-2-is-correlated-with-high-grade-oral-squamous-cell-carcinomas
#20
Yao Xiao, Wei-Wei Deng, Lei-Lei Yang, Hao Li, Guang-Tao Yu, Wen-Feng Zhang, Zhi-Jun Sun
AIM: p21-activated kinase 2 (PAK2) is overexpressed in several tumors but the expression of PAK2 in oral squamous cell carcinomas (OSCCs) remains unclear. MATERIALS & METHODS: Immunohistochemistry was performed on human tissue microarrays containing 165 primary OSCC, 48 oral epithelial dysplasia and 43 normal oral mucosa. RESULTS: PAK2 expression was increased in primary OSCC compared with normal mucosa and significantly increased in primary OSCC grade III compared with grade I, but independent of overall survival rate...
May 1, 2018: Future Oncology
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