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https://www.readbyqxmd.com/read/28821125/a-chitin-film-containing-basic-fibroblast-growth-factor-with-a-chitin-binding-domain-as-wound-dressings
#1
Yu Wang, Chuan Fu, Zhenxu Wu, Li Chen, Xuesi Chen, Yen Wei, Peibiao Zhang
Basic fibroblast growth factor (bFGF) can stimulate wound healing. However, consistent delivery of bFGF has many disadvantages. To decrease their instability and diffusible, we introduced chitin-binding domain (ChtBD) into bFGF. Two expression plasimids were constructed. The first one (named bFGF) contained bFGF (154 amino acids), the second (named ChtBD-bFGF) contained bFGF and the ChtBD (54 amino acids). ChtBD was derived from chitinase A1 (ChiA1) of Bacillus circulans WL-12. The recombinant protein ChtBD-bFGF had the same biological activity as bFGF in promoting fibroblast proliferation...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820426/burn-eschar-stimulates-fibroblast-and-adipose-mesenchymal-stromal-cell-proliferation-and-migration-but-inhibits-endothelial-cell-sprouting
#2
Hanneke N Monsuur, Lenie J van den Broek, Renushka L Jhingoerie, Adrianus F P M Vloemans, Susan Gibbs
The majority of full-thickness burn wounds heal with hypertrophic scar formation. Burn eschar most probably influences early burn wound healing, since granulation tissue only forms after escharotomy. In order to investigate the effect of burn eschar on delayed granulation tissue formation, burn wound extract (BWE) was isolated from the interface between non-viable eschar and viable tissue. The influence of BWE on the activity of endothelial cells derived from dermis and adipose tissue, dermal fibroblasts and adipose tissue-derived mesenchymal stromal cells (ASC) was determined...
August 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28819116/silencing-of-tgf-%C3%AE-1-in-tumor-cells-impacts-mmp-9-in-tumor-microenvironment
#3
Lakisha D Moore-Smith, Tatyana Isayeva, Joo Hyoung Lee, Andra Frost, Selvarangan Ponnazhagan
Transforming growth factor (TGF)-β1 contributes to autocrine and paracrine functions in the tumor microenvironment (TME). The present study examined the effects of TGF-β1 crosstalk in TME and its role in mediating tumor formation and progression by targeted abrogation of TGF-β1 expression in metastatic cells in situ. Using species-specific primers, we found a significant increase in MMP-9 gene expression in the tumor-reactive stroma during late-stage metastasis in the lung. This effect was also confirmed in cancer-associated fibroblasts (CAFs) when co-cultured with the tumor cells...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797129/differential-effects-of-amnion-and-chorion-membrane-extracts-on-osteoblast-like-cells-due-to-the-different-growth-factor-composition-of-the-extracts
#4
Yoon Young Go, Sung Eun Kim, Geum Joon Cho, Sung-Won Chae, Jae-Jun Song
Human amniotic membrane extracts contain numerous growth factors and bioactive substances. However, osteogenic effects of amnion and chorion membrane extracts (AME and CME, respectively) on osteoblasts are unclear. In this study, we explored the ability of AME and CME to promote the osteogenic differentiation of osteoblast-like MG-63 cells. MG-63 cells were cultured in osteogenic induction medium (OIM) with or without exogenous AME and CME. CME enhanced the osteogenic differentiation of MG-63 cells compared with AME, as indicated by increased mineralization; alkaline phosphatase activity; and mRNA expression of osteogenic marker genes encoding integrin-binding sialoprotein (IBSP), RUNX2, OSTERIX, and osteocalcin (OCN)...
2017: PloS One
https://www.readbyqxmd.com/read/28792122/acceleration-of-fracture-healing-by-overexpression-of-basic-fibroblast-growth-factor-in-the-mesenchymal-stromal-cells
#5
Hongliang Zhang, Alexander Kot, Yu-An E Lay, Fernando A Fierro, Haiyan Chen, Nancy E Lane, Wei Yao
In this study, we engineered mesenchymal stem cells (MSCs) to over-express basic fibroblast growth factor (bFGF) and evaluated its effects on fracture healing. Adipose-derived mouse MSCs were transduced to express bFGF and green fluorescence protein (ADSC(bFGF) -GFP). Closed-femoral fractures were performed with osterix-mCherry reporter mice of both sexes. The mice received 3 × 10(5) ADSCs transfected with control vector or bFGF via intramuscular injection within or around the fracture sites. Mice were euthanized at days 7, 14, and 35 to monitor MSC engraftment, osteogenic differentiation, callus formation, and bone strength...
August 9, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28791965/design-of-bfgf-tethered-self-assembling-extracellular-matrix-proteins-via-coiled-coil-triple-helix-formation
#6
Yoshinori Mizuguchi, Yasumasa Mashimo, Masayasu Mie, Eiry Kobatake
Self-assembling peptides are attractive materials for tissue engineering applications because of their functionality including high biocompatibility and biodegradability. Modification of self-assembling peptides with functional motifs, such as the cell-adhesive tripeptide sequence RGD leads to functional artificial extracellular matrices (ECMs). In this study, we developed an artificial self-assembling ECM protein tethered with a growth factor via heterotrimer triple-helix (helix A/B/C) formation. The helix A and helix C peptides, which are capable of forming a heterodimer coiled-coil structure, were fused to both ends of a matrix protein composed of the elastin-derived structural unit (APGVGV)12 with an RGD motif...
August 9, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28776762/vein-wrapping-facilitates-basic-fibroblast-growth-factor-induced-heme-oxygenase-1-expression-following-chronic-nerve-constriction-injury
#7
Naoya Hirosawa, Kentaro Uchida, Kazuki Kuniyoshi, Kenichi Murakami, Gen Inoue, Masayuki Miyagi, Yusuke Matsuura, Sumihisa Orita, Kazuhide Inage, Takane Suzuki, Masashi Takaso, Seiji Ohtori
The clinical efficacy of autologous vein wrapping for recurrent compressive neuropathy has been demonstrated; however, the underlying mechanisms of this technique remain unclear. Rats were divided into chronic constriction injury (CCI) and CCI + vein wrapping (CCI + VW) groups. Mechanical allodynia was evaluated using von Frey filaments. To identify the neuroprotective factors released from veins, basic fibroblast growth factor (bFGF) mRNA expression in veins was compared to that in the sciatic nerve...
August 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28776404/angiogenic-and-inflammatory-biomarkers-in-the-differentiation-of-pulmonary-hypertension
#8
Joanna Säleby, Habib Bouzina, Jakob Lundgren, Göran Rådegran
OBJECTIVES: Pulmonary hypertension (PH) is a serious condition where diagnosis often is delayed due to unspecific symptoms. New methods to diagnose and differentiate PH earlier would therefore be of great value. The aim of this study was therefore to evaluate the relationship between circulating angiogenic and inflammatory biomarkers and various hemodynamic variables in relation to different causes of PH. DESIGN: Plasma samples from 63 patients at diagnosis were extracted from Lund Cardio Pulmonary Register, separated into pulmonary arterial hypertension (PAH, n = 22), chronic thromboembolic pulmonary hypertension (CTEPH, n = 15) and left heart disease (LHD) with (n = 21) and without (n = 5) PH...
August 4, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/28773972/porous-alpha-tricalcium-phosphate-with-immobilized-basic-fibroblast-growth-factor-enhances-bone-regeneration-in-a-canine-mandibular-bone-defect-model
#9
Nobuhiro Kobayashi, Yoshiya Hashimoto, Akihisa Otaka, Tetsuji Yamaoka, Shosuke Morita
The effect of porous alpha-tricalcium phosphate (α-TCP) with immobilized basic fibroblast growth factor (bFGF) on bone regeneration was evaluated in a canine mandibular bone defect model. Identical bone defects were made in the canine mandible; six defects in each animal were filled with porous α-TCP with bFGF bound via heparin (bFGF group), whereas the other was filled with unmodified porous α-TCP (control group). Micro-computed tomography and histological evaluation were performed two, four and eight weeks after implantation...
October 19, 2016: Materials
https://www.readbyqxmd.com/read/28768794/embryonic-stem-cell-derived-germ-cells-induce-spermatogenesis-following-transplantation-to-testis-of-adult-mouse-azoospermia-model
#10
Zohreh Makoolati, Mansoureh Movahedin, Mehdi Forouzandeh-Moghadam, Majid Naghdi, Morteza Koruji
This study aimed to (a) identify the exogenous factors that allow in vitro differentiation of mouse SSCs from embryonic stem cells (ESCs); (b) evaluate the effects of Sertoli cells on SSCs enrichment; and (c) to assess the success of transplantation using in vitro differentiated SSCs in mouse busulfan-treated azoospermia model. One-day-old embryoid body (EB) received 5 ng/ml BMP4 for 4 days, 3 µM retinoic acid (RA) in STO co-culture (Co-C) system for 7 days and subsequently co-cultured for 2 days with Sertoli cell in the presence or absence of LIF, bFGF and RA composition and in the presence of these factors in the simple culture media...
August 2, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28767742/basic-fibroblast-growth-factor-improved-angiogenesis-of-vitrified-human-ovarian-tissues-after-in-vitro-culture-and-xenotransplantation
#11
B J Kang, Y Wang, L Zhang, S W Li
BACKGROUND: Basic fibroblast growth factor is a potent angiogenic factor. OBJECTIVE: To study the concentration and in vitro culture time of bFGF that maximize the angiogenesis for transplanted human ovarian tissues. MATERIALS AND METHODS: Vitrified and rewarmed human ovarian tissues were cultured in vitro with bFGF (0, 25, 50, 100, 150 and 200 ng/ml) for different periods (1 h, 2 d, 5 d and 7 d) before transplantation. The effect of bFGF on follicle survival was studied by evaluating the pregraft group, control group (no bFGF) and bFGF-treated group...
May 2017: Cryo Letters
https://www.readbyqxmd.com/read/28765892/production-of-bfgf-monoclonal-antibody-and-its-inhibition-of-metastasis-in-lewis-lung-carcinoma
#12
Yanqing Yang, Zhenming Luo, Yiyang Qin, Yu Zhou, Longcai Gong, Jianfang Huang, Hong Wang
Basic fibroblast growth factor (bFGF) and fibroblast growth factor receptor 1 (FGFR1) are associated with drug resistance in lung cancer. In the present study, mouse monoclonal antibodies (mAb) against human bFGF, targeting the binding site of bFGF with FGFR1 were produced, and the antitumor activity and inhibition of metastasis was studied in Lewis lung carcinoma (LLC). A total of four hybridoma cell strains that stably secreted bFGF mAb were obtained. mAbE12 was selected as the most effective for use in the following studies, with a relative affinity constant of 5...
July 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28765266/adam12-is-a-novel-regulator-of-tumor-angiogenesis-via-stat3-signaling
#13
Roopali Roy, Adelle Dagher, Catherine Butterfield, Marsha A Moses
ADAM12, (A Disintegrin and metalloproteinase domain-containing protein 12), is upregulated in epithelial cancers and contributes to increased tumor proliferation, metastasis and endocrine resistance. However, its role in tumor angiogenesis is unknown. Here we report that ADAM12 is upregulated in the vessels of aggressive breast tumors and exerts key regulatory functions. ADAM12 significantly increases bFGF-mediated angiogenesis in vivo and ADAM12 levels are upregulated in tumors that have undergone a switch to the angiogenic phenotype...
August 1, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28763897/-effect-of-alloxan-induced-diabetes-mellitus-on-the-functions-of-bone-marrow-derived-and-circulating-endothelial-progenitor-cells
#14
Q Tan, G P Li, Q S Wang, C H Zheng, S Y Zhang
Objective: To explore whether diabetes mellitus (DM) impairs functions of bone marrow-derived endothelial progenitor cells (BM-EPC) and circulating EPC. Methods: Diabetic model of rabbit was induced by Alloxan injection and the rabbits were then randomly divided into three groups: BM-EPC group, circulating EPC group, and DM group, with six rabbits in each group. Another 6 normal rabbits were enrolled as normal control group as well. 8 weeks later, BM-EPC and circulating EPC from diabetic and healthy rabbits were isolated and cultured...
July 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28763452/pathogen-reduction-through-additive-free-short-wave-uv-light-irradiation-retains-the-optimal-efficacy-of-human-platelet-lysate-for-the-expansion-of-human-bone-marrow-mesenchymal-stem-cells
#15
Sabrina Viau, Lucie Chabrand, Sandy Eap, Judith Lorant, Karl Rouger, Francis Goudaliez, Chryslain Sumian, Bruno Delorme
BACKGROUND: We recently developed and characterized a standardized and clinical grade human Platelet Lysate (hPL) that constitutes an advantageous substitute for fetal bovine serum (FBS) for human mesenchymal stem cell (hMSC) expansion required in cell therapy procedures, avoiding xenogenic risks (virological and immunological) and ethical issues. Because of the progressive use of pathogen-reduced (PR) labile blood components, and the requirement of ensuring the viral safety of raw materials for cell therapy products, we evaluated the impact of the novel procedure known as THERAFLEX UV-Platelets for pathogen reduction on hPL quality (growth factors content) and efficacy (as a medium supplement for hMSC expansion)...
2017: PloS One
https://www.readbyqxmd.com/read/28761877/basic-fibroblast-growth-factor-anchored-multilayered-mesenchymal-cell-sheets-accelerate-periosteal-bone-formation
#16
Kentaro Uchida, Gen Inoue, Osamu Matsushita, Kyosuke Horikawa, Hiroyuki Sekiguchi, Wataru Saito, Shotaro Takano, Hisako Fujimaki, Masayuki Miyagi, Masashi Takaso
Cell-based regenerative therapy has the potential to repair bone injuries or large defects that are recalcitrant to conventional treatment methods, including drugs and surgery. Here, we developed a multilayered cell-based bone formation system using cells coated with fibronectin-gelatin (FN-G) nanofilms. The multilayered mesenchymal cells (MLMCs) were formed after two days of culture and were shown to express higher levels of BMP-2 and VEGF compared to monolayer cultures of MCs. The MLMCs were used as a graft material in combination with a fusion protein consisting of basic fibroblast growth factor (bFGF), polycystic kidney disease (PKD) domain, and the collagen-binding domain (CBD) of Clostridium histolyticum collagenase...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28761364/effect-of-astaxanthin-on-cutaneous-wound-healing
#17
Jitlada Meephansan, Atiya Rungjang, Werayut Yingmema, Raksawan Deenonpoe, Saranyoo Ponnikorn
Wound healing consists of a complex series of convoluted processes which involve renewal of the skin after injury. ROS are involved in all phases of wound healing. A balance between oxidative and antioxidative forces is necessary for a favorable healing outcome. Astaxanthin, a member of the xanthophyll group, is considered a powerful antioxidant. In this study, we investigated the effect of topical astaxanthin on cutaneous wound healing. Full-thickness dermal wounds were created in 36 healthy female mice, which were divided into a control group and a group receiving 78...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28759642/distinctive-actions-of-connexin-46-and-connexin-50-in-anterior-pituitary-folliculostellate-cells
#18
María Leiza Vitale, Christopher J Garcia, Casimir D Akpovi, R-Marc Pelletier
Folliculostellate cell gap junctions establish a network for the transmission of information within the anterior pituitary. Connexins make up gap junction channels. Changes in connexin (Cx) turnover modify gap junction-mediated intercellular communication. We have reported that cytokines and hormones influence Cx43 turnover and coupling in folliculostellate cells and in the folliculostellate cell line TtT/GF. In addition, the expression of different connexins alters intercellular communication and connexins may have functions besides cell coupling...
2017: PloS One
https://www.readbyqxmd.com/read/28755402/combination-of-a-2940%C3%A2-nm-er-yag-laser-with-recombinant-bovine-basic-fibroblast-growth-factor-rb-bfgf-and-light-emitting-diode-red-light-led-rl-for-the-treatment-of-striae-alba-a-pilot-study
#19
Jie Shen, Xin-Gang Lu, Jing-Jing Jin, Hong-Wei Wang
BACKGROUND: Striae distensae (SD) are a common dermatologic problem that plagues many people. Although there are many therapeutic modalities have been used to treat SD, effective method has been disappointing for striae Alba. AIMS: To evaluate the clinical and histopathologic efficacy and safety of the 2940-nm erbium yttrium aluminum garnet (Er:YAG) ablative fractional laser (AFL) with recombinant bovine basic fibroblast growth factor (rb-bFGF) and light-emitting diode-red light (LED-RL) for the treatment of striae alba...
July 29, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28732797/functional-convergence-of-akt-protein-with-vegfr-1-in-human-endothelial-progenitor-cells-exposed-to-sera-from-patient-with-type-2-diabetes-mellitus
#20
Mehdi Hassanpour, Aysa Rezabakhsh, Reza Rahbarghazi, Alireza Nourazarian, Mohammad Nouri, Çığır Biray Avci, Shahrooz Ghaderi, Neda Alidadyani, Bakiye Goker Bagca, Hesam Saghaei Bagheri
Diabetes mellitus type 2 predisposes patients to various microvascular complications. In the current experiment, the potent role of diabetes mellitus was investigated on the content of VEGFR-1, -2, Tie-1 and -2, and Akt in human endothelial progenitor cells. The gene expression profile of mTOR and Hedgehog signaling pathways were measured by PCR array. The possible crosstalk between RTKs, mTOR and Hedgehog signaling was also studied by bioinformatic analysis. Endothelial progenitor cells were incubated with serum from normal and diabetic for 7days...
July 18, 2017: Microvascular Research
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