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Bone marrow concentrate

Roberto Negro, Eupremio Luigi Greco, Giacomo Greco
Background: It is postulated that the ability of dipeptidyl peptidase-4 inhibitors (DPP-4-i) to increase circulating endothelial progenitor cells (EPCs) may be at least partly mediated by active stromal cell-derived factor 1α (SDF-1α) (a pivotal mediator of stem cell mobilization from the bone marrow). As other DPP-4-i were demonstrated to increase EPC concentrations, in this study, we sought to investigate the ability of the DPP-4-i alogliptin in modifying EPCs and SDF-1α, in patients with good and poor diabetes control...
2017: Clinical Medicine Insights. Endocrinology and Diabetes
Sebastian Riedle, Laetitia C Pele, Don E Otter, Rachel E Hewitt, Harjinder Singh, Nicole C Roy, Jonathan J Powell
BACKGROUND: Pigment-grade titanium dioxide (TiO2) particles are an additive to some foods (E171 on ingredients lists), toothpastes, and pharma-/nutraceuticals and are absorbed, to some extent, in the human intestinal tract. TiO2 can act as a modest adjuvant in the secretion of the pro-inflammatory cytokine interleukin 1β (IL-1β) when triggered by common intestinal bacterial fragments, such as lipopolysaccharide (LPS) and/or peptidoglycan. Given the variance in human genotypes, which includes variance in genes related to IL-1β secretion, we investigated whether TiO2 particles might, in fact, be more potent pro-inflammatory adjuvants in cells that are genetically susceptible to IL-1β-related inflammation...
December 8, 2017: Particle and Fibre Toxicology
Marzena Wątek, Bonita Durnaś, Tomasz Wollny, Marcin Pasiarski, Stanisław Góźdź, Michał Marzec, Anna Chabowska, Przemysław Wolak, Małgorzata Żendzian-Piotrowska, Robert Bucki
BACKGROUND: Impaired apoptotic pathways in leukemic cells enable them to grow in an uncontrolled way. Moreover, aberrations in the apoptotic pathways are the main factor of leukemic cells drug resistance. METHODS: To assess the presence of potential abnormalities that might promote dysfunction of leukemic cells growth, HPLC system was used to determine sphingosine (SFO), sphinganine (SFA), sphingosine-1-phosphate (S1P) and ceramide (CER) concentration in the blood collected from patients diagnose with acute myeloblastic leukemia (AML; n = 49) and compare to values of control (healthily) group (n = 51)...
December 8, 2017: Lipids in Health and Disease
Ewa Kuca-Warnawin, Weronika Kurowska, Monika Prochorec-Sobieszek, Anna Radzikowska, Tomasz Burakowski, Urszula Skalska, Magdalena Massalska, Magdalena Plebańczyk, Barbara Małdyk-Nowakowska, Iwona Słowińska, Robert Gasik, Włodzimierz Maśliński
BACKGROUND: Rheumatoid arthritis (RA) is a systemic, autoimmune disease leading to joint destruction and ultimately disability. Bone marrow (BM) is an important compartment in RA, where pathological processes from "outside the joint" can occur. IL-17 is a cytokine that exerts proinflammatory effects and participates in the process of bone destruction. It is believed that IL-17 is involved in pathogenesis of RA. However, little is known about the biology of this cytokine in BM. In the present study we investigated Th17-related cytokines in RA BM...
December 8, 2017: Arthritis Research & Therapy
Xuzhen Qin, Jianzhong Rui, Yong Xia, Hong Mu, Sang Hoon Song, Raja Elina Raja Aziddin, Gabrielle Miles, Yuli Sun, Sail Chun
BACKGROUND: The immunosuppressant drugs (ISDs), tacrolimus and cyclosporine, are vital for solid organ transplant patients to prevent rejection. However, toxicity is a concern, and absorption is highly variable across patients; therefore, ISD levels need to be precisely monitored. In the Asia-Pacific (APAC) region, tacrolimus and cyclosporine concentrations are typically measured using immunoassays. The objective of this study was to assess the analytical performance of Roche Elecsystacrolimus and cyclosporinee electrochemiluminescence immunoassays (ECLIAs)...
March 2018: Annals of Laboratory Medicine
Xiao-Bo He, Tao Ma, Wei Zheng, Qing-He Geng, Kai-Jin Guo
Aseptic loosening of artificial joints is the leading cause of failure for patients who receive total joint arthroplasty. Prior reports indicate that bone marrow mesenchymal stem cells (BSMC) are critical in the stabilization of implanted artificial joints, and that deregulated interaction between BMSCs and artificial joint derived particles is a risk factor for aseptic loosening with an unknown mechanism. In the present study, the pathomechanisms whereby titanium and its alloy derived particles facilitate aseptic loosing were investigated in vitro...
November 20, 2017: Molecular Medicine Reports
Kiminori Sato
1. There is growing evidence to suggest that the cells in the maculae flavae are tissue stem cells of the human vocal fold and maculae flavae are a candidate for a stem cell niche. 2. The latest research shows that the cells in the human maculae flavae are involved in the metabolism of extracellular matrices that are essential for the viscoelasticity in the human vocal fold mucosa as a vibrating tissue, and considered to be important cells in the growth, development, and aging of the human vocal fold mucosa...
2017: Advances in Experimental Medicine and Biology
Bhabesh Mili, Kinsuk Das, Ajay Kumar, A C Saxena, Praveen Singh, Srikanta Ghosh, Sadhan Bag
Sustained and controlled release of neurotrophic factors in target tissue through nanomaterial based delivery system could be a better strategy for nerve tissue regeneration. The present study aims to prepare the nerve growth factor (NGF) encapsulated chitosan nanoparticles (NGF-CNPs) and its evaluation on neuronal differentiation potentiality of canine bone marrow derived mesenchymal stem cells (cBM-MSCs). The NGF-CNPs were prepared by ionotropic gelation method with tripolyphosphate (TPP) as an ionic cross-linking agent...
December 4, 2017: Journal of Materials Science. Materials in Medicine
Boguslaw Sadlik, Lukasz Kolodziej, Adrian Blasiak, Mateusz Szymczak, Bartłomiej Warchal
BACKGROUND: Surgical treatment for large osteochondral lesions of the talar dome (OLTD) must restore the convexity and curvature of the talus. Here, we present midterm results and describe the modified "sandwich" reconstruction procedure. Bone defects were restored using a biological inlay consists of autologous bone chips that were mixed with bone marrow concentrate and fibrin glue and covered with a xenogeneic collagen membrane infiltrated with bone marrow concentrate and stabilized by fibrin glue...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
Zhiwei Wu, Dan Liu, Yongqi Liu, Na Xue, Chunlu Yan, Yun Su
To study the effect of Astragalus polysaccharide (APS) on adipogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) cultured in hypoxic environment. The optimal APS concentration, which could promote the proliferation of BMSCs, was screened by methyl thiazolyl tetrazolium method. The concentration was used to intervene in BMSCs-induced by adipogenic differentiation fluid growing in different oxygen concentrations (3%, 6%, 10% and 20%). The formation of lipid droplets in the BMSCs-intervened was observed by oil red O staining under the optical microscope...
November 25, 2017: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
Adriana Ordóñez-Vásquez, Lorenza Jaramillo-Gómez, Camilo Duran-Correa, Erandi Escamilla-García, Myriam Angélica De la Garza-Ramos, Fernando Suárez-Obando
Αlpha-solanine (α-solanine) is a glycoalkaloid present in potato (Solanum tuberosum). It has been of particular interest because of its toxicity and potential teratogenic effects that include abnormalities of the central nervous system, such as exencephaly, encephalocele, and anophthalmia. Various types of cell culture have been used as experimental models to determine the effect of α-solanine on cell physiology. The morphological changes in the mesenchymal stem cell upon exposure to α-solanine have not been established...
2017: Bone Marrow Research
Asieh Aramvash, Azra Rabbani Chadegani, Safa Lotfi
Anthracycline antibiotics are potent anticancer drugs widely used in the treatment of solid tumors and hematological malignancies. Because of their extensive clinical use and their toxic effect on normal cells, in the present study the effect of these drugs on multipotent hematopoietic bone marrow cells was investigated employing, viability tests, PARP cleavage, Hoechst 33258 staining, DNA fragmentation and superoxide anion production techniques. The results revealed that daunorubicin and doxorubicin exhibited time and dose dependent cytotoxicity against the cells and upon increasing the drugs concentrations, apoptosis was occurred after 4 h of incubation and at low concentration of the drugs...
2017: Iranian Journal of Pharmaceutical Research: IJPR
Marwa Qadri, Sara Almadani, Gregory D Jay, Khaled A Elsaid
Osteoarthritis (OA) is a low-grade chronic inflammatory joint disease. Innate immunity contributes to OA progression, mediated by TLR2 and TLR4. We evaluated the role of cluster determinant 44 (CD44), a transmembrane glycoprotein, in regulating TLR2-linked macrophage activation and resultant proinflammatory responses. TLR2 stimulation was performed on differentiated THP-1 macrophages in the presence or absence of a CD44-specific Ab or hyaluronan (HA). NF-κB nuclear translocation, IL-1 β and TNF-α gene expression, and protein concentrations were determined...
December 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
Biljana Smiljanovic, Anna Radzikowska, Ewa Kuca-Warnawin, Weronika Kurowska, Joachim R Grün, Bruno Stuhlmüller, Marc Bonin, Ursula Schulte-Wrede, Till Sörensen, Chieko Kyogoku, Anne Bruns, Sandra Hermann, Sarah Ohrndorf, Karlfried Aupperle, Marina Backhaus, Gerd R Burmester, Andreas Radbruch, Andreas Grützkau, Wlodzimierz Maslinski, Thomas Häupl
OBJECTIVE: Rheumatoid arthritis (RA) accompanies infiltration and activation of monocytes in inflamed joints. We investigated dominant alterations of RA monocytes in bone marrow (BM), blood and inflamed joints. METHODS: CD14+ cells from BM and peripheral blood (PB) of patients with RA and osteoarthritis (OA) were profiled with GeneChip microarrays. Detailed functional analysis was performed with reference transcriptomes of BM precursors, monocyte blood subsets, monocyte activation and mobilisation...
November 30, 2017: Annals of the Rheumatic Diseases
S Giannotti, P D Parchi, G B Colasanti, G Agostini, F Moreschini, C Cataldi, P Ferrata, R Capanna
Allografts techniques remain the best reconstructive strategy for chronic extensor mechanism lesions after total knee arthroplasty (3) but outcomes depend strictly on the host tissue-allograft junctions healing. The purpose of this study is to evaluate if modern techniques of adding autologous bone marrow cells concentrate enriched with platelet-rich fibrin, provide better healing of the allograft. We present the case of an 86 years old patient affected by patellar tendon rupture after TKA. A whole extensor mechanism allograft was performed adding a bone marrow cells concentrate enriched with platelet-rich fibrin on the host tissue-allograft junctions...
October 2017: Journal of Biological Regulators and Homeostatic Agents
V N Petrov, E V Agaeva, O E Popovkina, A G Konoplyannikov, M A Kaplan, L A Lepekhina, E V Sayapina, I V Semenkova
We studied in vivo modifying effect of autotransfusion of human bone marrow mesenchymal stromal cells on ROS generation and production of cytokines (TNFα,TNFβ, IL-1α, IL-10, IFNγ, and GM-CSF) and PGE2 by mononuclear cells of patients (N=21) with chronic heart failure. These parameters were evaluated prior to (control) and after (immediately and on day 14) intravenous administration of stromal cells in doses of 100-200×106. Immediately after autotransfusion, significant increase of in vitro zymosan-induced chemiluminescence of blood mononuclear cells from 10 patients was observed...
November 27, 2017: Bulletin of Experimental Biology and Medicine
Jesus Duque-Afonso, Miguel Waterhouse, Dietmar Pfeifer, Marie Follo, Justus Duyster, Hartmut Bertz, Jürgen Finke
Cell-free DNA (cfDNA) isolated from plasma or serum has received increasing interest for diagnostic applications in pregnancy, solid tumors and solid organ transplantation. The reported clinical usefulness of cfDNA obtained from plasma or serum in patients undergoing allogeneic cell transplantation (alloHSCT) is scarce. OBJECTIVE: To analyze the potential clinical utility of cfDNA chimerism analysis after alloHSCT. DESIGN AND METHODS: A total of 196 samples obtained from 110 patients were investigated for their chimeric status both in peripheral blood and plasma using standard PCR for microsatellite amplification...
November 24, 2017: Clinical Biochemistry
Hitesh Kumar Dewangan, Tarun Pandey, Sanjay Singh
Chronic Hepatitis B Virus (HBV) infections are severe with weak antiviral immune responses. The lack of an appropriate small animal model for chronic hepatitis, a major hurdle for studying the immunotolerance and immunopathogenesis induced by hepatitis B viral (HBV) infection. In this study, for enhancing the antibody production efficiency the prepared polymeric HBsAg-loaded nanoparticles (nanovaccine) will be tested in immune-deficit mice, which suffer from chronic Hepatitis B virus. Vaccination of Balb/c mice by this prepared nanoparticles that were engrafted with peripheral blood mononuclear cells (PBMCs), which was already lethally irradiated and transplanted by the bone marrow of NOD (knockout mice) mice...
November 27, 2017: Artificial Cells, Nanomedicine, and Biotechnology
Chengyu Zhao, Zhanquan Li, Linhua Ji, Jie Ma, Ri-Li Ge, Sen Cui
BACKGROUND Chronic mountain sickness (CMS) has a higher incidence in the plateau region. The one of its principal characters is excessive erythrocytosis. The PI3K-Akt pathway plays an important role in the process of erythropoiesis, and could downregulate apoptosis by regulating apoptosis-related molecules. In this paper, we explored the change in apoptosis of erythroblasts and the effect of the PI3K-Akt signal pathway on erythroblasts apoptosis in CMS. MATERIAL AND METHODS A total of 22 CMS and 20 non-CMS participants were involved in this study...
November 26, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Olivia Crociani, Ilaria Marzi, Maria Grazia Cipolleschi, Antonella Mannini, Massimo Contini, Massimo Olivotto
The purpose of this research has been deciphering the Warburg paradox, the biochemical enigma unsolved since 1923. This paradox consists of the aerobic pyruvate conversion to lactate brought about by anaplastic cancer, through the metabolic pathway known as aerobic glycolysis. This pathway implies a heavy energetic waste. We solved the enigma by demonstrating that its specific character, i.e. the forced aerobic lactate exportation, represents a crucial metabolic device to counteract the cytotoxic effect produced by an excess of pyruvate at the connection of glycolysis with the Krebs cycle...
November 21, 2017: Cell Cycle
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