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https://www.readbyqxmd.com/read/27906878/serum-concentrations-of-receptor-for-interleukin-8-in-patients-with-esophageal-cancer
#1
Marta Łukaszewicz-Zając, Agnieszka Kulczyńska-Przybik, Paweł Muszyński, Mirosław Kozłowski, Maciej Szmitkowski, Barbara Mroczko
INTRODUCTION A specific receptor for interleukin 8, known as C-X-C chemokine type‑2 receptor (CXCR‑2), is one of the 7‑transmembrane G‑protein‑coupled receptors. Its involvement in the development of numerous malignancies, including esophageal cancer (EC), has been suggested. OBJECTIVES The aim of this study was to assess the diagnostic and prognostic usefulness of serum CXCR‑2 level measurement in patients with EC, in comparison with C‑reactive protein (CRP) levels and classic tumor markers such as carcinoembryonic antigen (CEA) and squamous cell carcinoma antigen (SCC‑Ag)...
October 18, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27881732/metronomic-chemotherapy-prevents-therapy-induced-stromal-activation-and-induction-of-tumor-initiating-cells
#2
Tze-Sian Chan, Chung-Chi Hsu, Vincent C Pai, Wen-Ying Liao, Shenq-Shyang Huang, Kok-Tong Tan, Chia-Jui Yen, Shu-Ching Hsu, Wei-Yu Chen, Yan-Shen Shan, Chi-Rong Li, Michael T Lee, Kuan-Ying Jiang, Jui-Mei Chu, Gi-Shih Lien, Valerie M Weaver, Kelvin K Tsai
Although traditional chemotherapy kills a fraction of tumor cells, it also activates the stroma and can promote the growth and survival of residual cancer cells to foster tumor recurrence and metastasis. Accordingly, overcoming the host response induced by chemotherapy could substantially improve therapeutic outcome and patient survival. In this study, resistance to treatment and metastasis has been attributed to expansion of stem-like tumor-initiating cells (TICs). Molecular analysis of the tumor stroma in neoadjuvant chemotherapy-treated human desmoplastic cancers and orthotopic tumor xenografts revealed that traditional maximum-tolerated dose chemotherapy, regardless of the agents used, induces persistent STAT-1 and NF-κB activity in carcinoma-associated fibroblasts...
November 23, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27845489/leishmaniasis-and-ifn-%C3%AE-dependent-chemokines
#3
P Fallahi, G Elia, A Bonatti
Leishmaniasis is a disease caused by Leishmania and spread by the bite of certain types of sandflies. Leishmaniasis affects as many as 12 million people worldwide, with 2 million new cases each year. Leishmania infection, and Leishmaniasis, following occupational exposure has been also reported. Three forms of Leishmaniasis are known: a- Cutaneous Leishmaniasis (CL); b-Mucocutaneous Leishmaniasis; c- Visceral Leishmaniasis (VL). The visceral form of Leishmaniasis has an estimated incidence of 500,000 new cases...
September 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/27845488/contact-dermatitis-and-interferon-%C3%AE-dependent-chemokines
#4
P Fallahi, I Ruffilli
Inflammation of the skin is the pathological base of contact dermatitis (CD), and cytokines are very important in its pathogenesis. Recently it has been shown that interferon (IFN)-γ, and the IFN-γ dependent chemokines, monokine induced by IFN-γ (MIG), IFN-γ-induced protein 10 (IP-10), and IFN-inducible T cell alpha chemoattractant (I-TAC), play an important role in CD. Allergic CD (ACD) is a T-cell-mediated disease in which expression of a distinct repertoire of chemokines results in the recruitment of effector T cells into the skin...
September 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/27773851/intradermal-grass-pollen-allergen-immunotherapy-for-seasonal-allergy-a-randomized-controlled-trial
#5
Anna Slovick, Abdel Douiri, Rachel Muir, Andrea Guerra, Konstantinos Tsioulos, Evie Hay, Emily P S Lam, Joanna Kelly, Janet L Peacock, Sun Ying, Mohamed H Shamji, David J Cousins, Stephen R Durham, Stephen J Till
BACKGROUND: Repeated low dose grass pollen intradermal allergen injection suppresses allergen-induced cutaneous late phase responses, comparable with conventional subcutaneous and sublingual immunotherapy. OBJECTIVE: To evaluate the efficacy and safety of grass pollen intradermal immunotherapy in the treatment of allergic rhinitis. METHODS: We randomly assigned 93 adults with grass pollen allergic rhinitis to receive 7 pre-seasonal intradermal allergen injections (containing 7 nanograms of Phl p 5 major allergen) or histamine control...
October 20, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27773788/modulating-putative-endothelial-progenitor-cells-for-the-treatment-of-endothelial-dysfunction-and-cardiovascular-complications-in-diabetes
#6
REVIEW
Julien Wils, Julie Favre, Jérémy Bellien
Diabetes induces a decrease in the number and function of different pro-angiogenic cell types generically designated as putative endothelial progenitor cells (EPC), which encompasses cells from myeloid origin that act in a paracrine fashion to promote angiogenesis and putative "true" EPC that contribute to endothelial replacement. This not only compromises neovasculogenesis in ischemic tissues but also impairs, at an early stage, the reendotheliziation process at sites of injury, contributing to the development of endothelial dysfunction and cardiovascular complications...
October 20, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27738322/antagonizing-mir-218-5p-attenuates-wnt-signaling-and-reduces-metastatic-bone-disease-of-triple-negative-breast-cancer-cells
#7
Hanna Taipaleenmäki, Nicholas H Farina, Andre J van Wijnen, Janet L Stein, Eric Hesse, Gary S Stein, Jane B Lian
Wnt signaling is implicated in bone formation and activated in breast cancer cells promoting primary and metastatic tumor growth. A compelling question is whether osteogenic miRNAs that increase Wnt activity for bone formation are aberrantly expressed in breast tumor cells to support metastatic bone disease. Here we report that miR-218-5p is highly expressed in bone metastases from breast cancer patients, but is not detected in normal mammary epithelial cells. Furthermore, inhibition of miR-218-5p impaired the growth of bone metastatic MDA-MB-231 cells in the bone microenvironment in vivo...
October 12, 2016: Oncotarget
https://www.readbyqxmd.com/read/27693537/resveratrol-treatment-attenuates-chemokine-receptor-expression-in-the-btbr-t-tf-j-mouse-model-of-autism
#8
Saleh A Bakheet, Mohammad Zeed Alzahrani, Ahmed Nadeem, Mushtaq Ahmad Ansari, Khairy M A Zoheir, Sabry M Attia, Laila Yousef Al-Ayadhi, Sheikh Fayaz Ahmad
Autism is a neurodevelopmental disorder categorized by qualitative impairments in social interaction, communication, and repetitive stereotypic behavior. Emerging evidence increasingly suggests that chemokine receptors have a pivotal role in the central nervous system and are involved in the pathogenesis of numerous neuroinflammatory diseases. Resveratrol is widely used to treat neurodegenerative diseases, but its effect on autism has not been investigated. We investigated the effect of resveratrol (20 and 40mg/kg) in the spleen and brain tissues of BTBR T+tf/J (BTBR) and C57BL/6J (B6) mice as well as on the C-C chemokine receptor (CCR) and C-X-C motif chemokine receptor (CXCR) (CCR3(+), CCR5(+), CCR7(+) and CCR9(+), CXCR3(+) and CXCR5(+)) in cluster of differentiation 4-positive (CD4(+)) T cells in the spleen...
December 2016: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/27648130/silencing-of-cxcr2-and-cxcr7-protects-against-esophageal-cancer
#9
Kai Wu, Lingling Cui, Yang Yang, Jia Zhao, Dengyan Zhu, Donglei Liu, Chunyang Zhang, Yu Qi, Xiangnan Li, Weihao Li, Song Zhao
This study was aimed to investigate the functional roles of cytokine receptor (CXCR) CXCR2 and CXCR7 in esophageal cancer (EC). Specific small interfering RNAs (siRNA) against CXCR2 and CXCR7 were transfected into EC cell lines TE-1, EC9706, and EC109 cells. Expression of CXCR2 and CXCR7 was validated, along with cell viability, chemotaxis, apoptosis rate, and ERK1/2 pathways associated protein after transfection. Moreover, EC9706 cells treated with or without CXCR2/7 siRNA were injected into athymic nude mice...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27613402/peroxisome-proliferator-activated-receptor-alpha-deficiency-impairs-regulatory-t-cell-functions-possible-application-in-the-inhibition-of-melanoma-tumor-growth-in-mice
#10
Aziz Hichami, Akadiri Yessoufou, François Ghiringhelli, Françoise Salvadori, Kabirou Moutairou, Narcisse Zwetyenga, Naim Akhtar Khan
Regulatory T (Treg) cells are important to induce and maintain immunological self-tolerance. Although the progress accomplished in understanding the functional mechanism of Treg cells, intracellular molecules that control the mechanisms of their suppressive capacity are still on investigation. The present study showed that peroxisome proliferator-activated receptor-alpha deficiency impaired the suppressive activity of Treg cells on CD4(+)CD25(-) and CD8(+) T cell proliferation. In Treg cells, PPARα gene deletion also induced a decrease of migratory abilities, and downregulated the expression of chemokine receptors (CCR-4, CCR-8 and CXCR-4) and p27(KIP1) mRNA...
September 6, 2016: Biochimie
https://www.readbyqxmd.com/read/27578569/-exenatide-promotes-chemotactic-migration-of-adipose-derived-stem-cells-through-sdf-1-cxcr-4-rho-gtpase-pathway
#11
Qiang Ma, Jun-Jie Yang, Hao Zhou, Ying Zhang, Yun-Dai Chen
OBJECTIVE: To investigate the effect of exenatide on chemotactic migration of adipose-derived stem cells (ADSCs) and confirm that Rho GTPase is the downstream effector protein of SDF-1/CXCR-4 migration pathway. METHODS: ADSCs were isolated, cultured, identified by flow cytometry, and induced to differentiate in vitro. RTCA xCELLigence system was used to analyze the effect of exenatide on ADSC proliferation. The effects of exenatide at different concentrations, AMD3100 (CXCR-4 antagonist), and CCG-1423 (Rho GTPase antagonist) on chemotactic migration of ADSCs were tested using Transwell assay...
August 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27550713/myeloperoxidase-inhibition-increases-neurogenesis-after-ischemic-stroke
#12
HyeonJu Kim, Ying Wei, Ji Yong Lee, Yue Wu, Yi Zheng, Michael A Moskowitz, John W Chen
The relationship between inflammation and neurogenesis in stroke is currently not well understood. Focal ischemia enhances cell proliferation and neurogenesis in the neurogenic regions, including the subventricular zone (SVZ), dentate gyrus, as well as the non-neurogenic striatum, and cortex in the ischemic hemisphere. Myeloperoxidase (MPO) is a potent oxidizing enzyme secreted during inflammation by activated leukocytes, and its enzymatic activity is highly elevated after stroke. In this study, we investigated whether the inhibition of MPO activity by a specific irreversible inhibitor, 4-aminobenzoic acid hydrazide (ABAH) (MPO(-/-) mice) can increase neurogenesis after transient middle cerebral artery occlusion in mice...
November 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27524614/perivascular-mast-cells-govern-shear-stress-induced-arteriogenesis-by-orchestrating-leukocyte-function
#13
Omary Chillo, Eike Christian Kleinert, Thomas Lautz, Manuel Lasch, Judith-Irina Pagel, Yvonn Heun, Kerstin Troidl, Silvia Fischer, Amelia Caballero-Martinez, Annika Mauer, Angela R M Kurz, Gerald Assmann, Markus Rehberg, Sandip M Kanse, Bernhard Nieswandt, Barbara Walzog, Christoph A Reichel, Hanna Mannell, Klaus T Preissner, Elisabeth Deindl
The body has the capacity to compensate for an occluded artery by creating a natural bypass upon increased fluid shear stress. How this mechanical force is translated into collateral artery growth (arteriogenesis) is unresolved. We show that extravasation of neutrophils mediated by the platelet receptor GPIbα and uPA results in Nox2-derived reactive oxygen radicals, which activate perivascular mast cells. These c-kit(+)/CXCR-4(+) cells stimulate arteriogenesis by recruiting additional neutrophils as well as growth-promoting monocytes and T cells...
August 23, 2016: Cell Reports
https://www.readbyqxmd.com/read/27470712/collaborative-interferon-%C3%AE-and-interleukin-17-signaling-protects-the-oral-mucosa-from-staphylococcus-aureus
#14
Jobert G Barin, Monica V Talor, Julie A Schaub, Nicola L Diny, Xuezhou Hou, Matthew Hoyer, Nathan K Archer, Elizabeth S Gebremariam, Meghan F Davis, Lloyd S Miller, Noel R Rose, Daniela Čiháková
Infections with Staphylococcus aureus are a continuing and growing problem in community and hospital settings. Preclinical animal modeling of S. aureus relies on experimental infection, which carries some limitations. We describe here a novel, spontaneous model of oral staphylococcal infection in double knockout mice, deficient in the receptors for IL-17 (IL-17RA) and interferon (IFN)-γ (IFNγRI), beginning at 6 to 8 weeks of age. IFNγRI(-/-)IL17RA(-/-) (GRAKO) mice developed progressive oral abscesses. Cytometric methods revealed extensive neutrophilic infiltration of oral tissues in GRAKO mice; further investigation evidenced that IL-17 predominated neutrophil defects in these mice...
September 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27413386/qingchang-wenzhong-decoction-ameliorates-dextran-sulphate-sodium-induced-ulcerative-colitis-in-rats-by-downregulating-the-ip10-cxcr3-axis-mediated-inflammatory-response
#15
Tang-You Mao, Rui Shi, Wei-Han Zhao, Yi Guo, Kang-Li Gao, Chen Chen, Tian-Hong Xie, Jun-Xiang Li
Qingchang Wenzhong Decoction (QCWZD) is an effective traditional Chinese medicine prescription. Our previous studies have shown that QCWZD has significant efficacy in patients with mild-to-moderate ulcerative colitis (UC) and in colonic mucosa repair in UC rat models. However, the exact underlying mechanism remains unknown. Thus, this study was conducted to determine QCWZD's efficacy and mechanism in dextran sulphate sodium- (DSS-) induced UC rat models, which were established by 7-day administration of 4.5% DSS solution...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27347016/stromal-cell-derived-factor-1-promotes-human-adipose-tissue-derived-stem-cell-survival-and-chronic-wound-healing
#16
Qiang Li, Yanping Guo, Feifei Chen, Jing Liu, Peisheng Jin
Adipose tissue-derived stem cells (ADSCs) hold great potential for the stem cell-based therapy of cutaneous wound healing. Stromal cell-derived factor-1 (SDF-1) activates CXC chemokine receptor (CXCR)4(+) and CXCR7(+) cells and plays an important role in wound healing. Increasing evidence suggests a critical role for SDF-1 in cell apoptosis and the survival of mesenchymal stem cells. However, the function of SDF-1 in the apoptosis and wound healing ability of ADSCs is not well understood. The aim of this study was to analyze the effect of SDF-1 on the apoptosis and therapeutic effect of ADSCs in cutaneous chronic wounds in vitro and in vivos...
July 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27220474/sdf%C3%A2-1-cxcr4-axis-induces-apoptosis-of-human-degenerative-nucleus-pulposus-cells-via-the-nf%C3%A2-%C3%AE%C2%BAb-pathway
#17
Zongchao Liu, Chuan Ma, Jieliang Shen, Dawu Wang, Jie Hao, Zhenming Hu
Intervertebral disc degeneration (IVDD) is a major cause of lower back pain, and increased cell apoptosis is a key characteristic of IVDD. The present study aimed to investigate the effects and mechanism of the stromal cell‑derived factor‑1 (SDF‑1)/C‑X‑C motif chemokine receptor 4 (CXCR4) axis on apoptosis in human degenerative nucleus pulposus cells (NPCs). The expression levels of SDF‑1 and CXCR4 in human intervertebral discs (IVD) were determined using immunohistochemistry and western blot analysis...
July 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27208878/a-study-of-chemokines-chemokine-receptors-and-interleukin-6-in-patients-with-panic-disorder-personality-disorders-and-their-co-morbidity
#18
Ewa A Ogłodek, Anna M Szota, Marek J Just, Adam R Szromek, Aleksander Araszkiewicz
BACKGROUND: Stress may induce inflammatory changes in the immune system and activate pro-inflammatory cytokines and their receptors by activating the hypothalamic-pituitary-adrenal axis. METHODS: 460 hospitalized patients with panic disorders (PD) and/or personality disorders (P) were studied. The study group comprised subjects with PD, avoidant personality disorder (APD), borderline personality disorder (BPD), obsessive-compulsive personality disorder (OCPD), and concomitant (PD+APD; PD+BPD; PD+OCPD)...
August 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27147644/the-migration-and-differentiation-of-huc-mscs-cxcr4-gfp-encapsulated-in-bdnf-chitosan-scaffolds-for-brain-tissue-engineering
#19
Chuanjun Huang, Longxiang Zhao, Jun Gu, Dekang Nie, Yinan Chen, Hao Zuo, Wei Huan, Jinlong Shi, Jian Chen, Wei Shi
We previously developed a biomaterial scaffold that could effectively provide seed cells to a lesion cavity resulting from traumatic brain injury. However, we subsequently found that few transplanted human umbilical cord mesenchymal stem cells (hUC-MSCs) are able to migrate from the scaffold to the lesion boundary. Stromal derived-cell factor-1α and its receptor chemokine (C-X-C motif) receptor (CXCR)4 are chemotactic factors that control cell migration and stem cell recruitment to target areas. Given the low expression level of CXCR4 on the hUC-MSC membrane, lentiviral vectors were used to generate hUC-MSCs stably expressing CXCR4 fused to green fluorescent protein (GFP) (hUC-MSCs(CXCR4/GFP))...
2016: Biomedical Materials
https://www.readbyqxmd.com/read/27137768/microfluidic-co-culture-platform-to-quantify-chemotaxis-of-primary-stem-cells
#20
Z Tatárová, J P Abbuehl, S Maerkl, J Huelsken
Functional analysis of primary tissue-specific stem cells is hampered by their rarity. Here we describe a greatly miniaturized microfluidic device for the multiplexed, quantitative analysis of the chemotactic properties of primary, bone marrow-derived mesenchymal stem cells (MSC). The device was integrated within a fully customized platform that both increased the viability of stem cells ex vivo and simplified manipulation during multidimensional acquisition. Since primary stem cells can be isolated only in limited number, we optimized the design for efficient cell trapping from low volume and low concentration cell suspensions...
May 21, 2016: Lab on a Chip
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